- National Propane Gas Association

Transcription

Report on Proposals F2006 — Copyright, NFPA
NFPA 58
Report of the Committee on
Liquefied Petroleum Gases
Frank J. Mortimer, Chair
EMC Insurance Company, IA [I]
Rep. Property Casualty Insurers Association of America
Theodore C. Lemoff, Secretary (Staff)
James C. Belke, US Environmental Protection Agency, DC [E]
Paul N. Bogan, Sea-3, Incorporated, NH [U]
Victor Bogosian, Jr., National Board of Boiler & Pressure Vessel Inspectors,
OH [E]
Ronald G. Brunner, Gas Processors Association, OK [M]
Ronald R. Czischke, Underwriters Laboratories Incorporated, IL [RT]
Alberto Jose Fossa, MDJ, Assessoria E Engenharia Consultiva, Brasil [SE]
Rep. NFPA Latin American Section
Richard G. Fredenburg, State of North Carolina, NC [E]
Richard L. Gilbert, Railroad Commission of Texas, TX [E]
Richard A. Hoffmann, Hoffmann & Feige, NY [SE]
Stanley T. Kastanas, US Department of Transportation, DC [E]
John W. King, Federated Mutual Insurance Company, MN [I]
James P. Lewis, Project Technical Liaison Associates, Incorporated, TX
[SE]
Roger L. Maxon, BernzOmatic Division of Newell Rubbermaid, NY [M]
Rep. Compressed Gas Association
Samuel E. McTier, McTier Supply Company, IL [M]
Rep. National Propane Gas Association
Gerry E. Misel, Jr., Georgia Gas Distributors, Incorporated, GA [IM]
Rep. National Propane Gas Association
Vicki O’Neil, State of Florida, FL [E]
Harold L. (Butch) Phillippi, ExxonMobil Corporation, VA [M]
Rep. American Petroleum Institute
Phani K. Raj, Technology & Management Systems, Incorporated, MA [SE]
Phillip H. Ribbs, Santa Cruz, CA [E]
Rep. International Association of Plumbing & Mechanical Officials
James H. Stannard, Jr., Stannard & Company, NJ [SE]
Joseph A. Sternola, Permagas, Incorporated, WA [IM]
Rep. Propane Gas Association of Canada
Scott A. Stookey, Phoenix Fire Department, AZ [E]
Bruce J. Swiecicki, National Propane Gas Association, IL [IM]
Ramon S. Miguel Villarreal Reza, Equipos Para Gas S.A. de
C. V. - Mexico, Mexico [IM]
Rep. Asociación
Mexicana de
Distribuidores de Gas
Frank R. Volgstadt, Volgstadt and Associates, OH
[M]
Rep. Plastic Pipe Institute
Thomas A. Wilson, Reedy Creek Improvement District, FL [E]
Rep. International Fire Marshals Association
William J. Young, Superior Energy Systems, Limited, OH [M]
Herbert F. Zepp, Smith & Norrington Engineering Corporation, NH [SE]
George K. Hess, US Environmental Protection Agency, KS [E]
(Alt. to James C. Belke)
Bill Mahre, Propane Technical Services, MN [SE]
(Voting Alt.)
Eugene F. Palermo, Plastics Pipe Institute, DC [M]
(Alt. to Frank R. Volgstadt)
Stephen L. Pitner, Railroad Commission of Texas, TX [E]
(Alt. to Richard L. Gilbert)
Hari Ramanathan, Int’l. Assn. of Plumbing & Mechanical Officials, CA [E]
(Alt. to Phillip H. Ribbs)
Steven D. Ruffcorn, Standby Systems, Incorporated, MN [M]
(Alt. to William J. Young)
Russell T. Rupp, Suburban Propane Partners, NJ [M]
(Alt. to Samuel E. McTier)
Mark F. Sutton, Gas Processors Association, OK [M]
(Alt. to Ronald G. Brunner)
Leslie Woodward, Fairview Fittings & Manufacturing Incorporated, NY
[IM]
(Alt. to Joseph A. Sternola)
Steven E. Younis, Prospective Technology, Incorporated, MA [SE]
(Alt. to Phani K. Raj)
Robert A. Zeman, Underwriters Laboratories Incorporated, IL [RT]
(Alt. to Ronald R. Czischke)
Nonvoting
Robert B. Bell, US Department of Labor, DC [E]
Bernardo Bohorquez, Saena de Colombia S.A., Colombia [IM]
Kenneth Lun, KL Consulting Engineers Limited, China [SE]
Donald W. Switzer, US Consumer Product Safety Commission, MD [C]
Matthew I. Chibbaro, US Department of Labor, DC [E]
(Alt. to Robert B. Bell)
John A. Cedervall, Deerfield, IL
(Member Emeritus)
Al Linder, Watsonville, CA [SE]
(Member Emeritus)
Staff Liaison: Theodore C. Lemoff
Committee Scope: This Committee shall have primary responsibility for
documents on the design, construction, installation, and operation of fixed
and portable liquefied petroleum gas systems in bulk plants and commercial,
industrial (with specified exceptions), institutional, and similar properties;
truck transportation of liquefied petroleum gas; engine fuel systems on motor
vehicles and other mobile equipment; storage of containers awaiting use
or resale; installation on commercial vehicles; and liquefied petroleum gas
service stations.
This list represents the membership at the time the Committee was
balloted on the text of this edition. Since that time, changes in the
membership may have occurred. A key to classifications is found at
the front of this book.
The Report of the Technical Committee on Liquefied Petroleum Gases is
presented for adoption.
Alternates
Donald Barber, Enmat International (UK), United Kingdom [SE]
(Alt. to James H. Stannard, Jr.)
Sharon E. Coates, State of Arkansas, AR [E]
(Alt. to Vicki O’Neil)
Carlos de León, Flama Gas, S.A. de C.V., Mexico [IM]
(Alt. to Ramon S. Miguel Villarreal Reza)
Alexi I. Dimopoulos, ExxonMobil Corporation, VA [M]
(Alt. to Harold L. (Butch) Phillippi)
Kenneth Faulhaber, Ferrellgas, MO [IM]
(Alt. to Bruce J. Swiecicki)
James R. Freeman, III, Freeman Gas & Electric, Incorporated, SC [IM]
(Alt. to Gerry E. Misel, Jr.)
Steven T. Gentry, Worthington Cylinder Corporation, OH [M]
(Alt. to Roger L. Maxon)
Wesley W. Hayes, Polk County Fire Services Division, FL [E]
(Alt. to Thomas A. Wilson)
Swapan Kumar Hazra, Hindustan Aegis LPG Bottling Company, Limited,
India [U]
(Alt. to Paul N. Bogan)
This Report was prepared by the Technical Committee on Liquefied
Petroleum Gases and proposes for adoption, amendments to NFPA 58,
Liquefied Petroleum Gas Code 2004 edition. NFPA 58 is published in
Volume 3 of the 2004/2005 National Fire Codes and in separate pamphlet
form.
This Report has been submitted to letter ballot of the Technical Committee
on Liquefied Petroleum Gases, which consists of 30 voting members. The
results of the balloting, after circulation of any negative votes, can be found in
the report.
58-
NFPA 58
________________________________________________________________
58-1 Log #38 Final Action: Reject
(1.4.5 (New) )
________________________________________________________________
Submitter: Richard G. Fredenburg, North Carolina Dept. of Agriculture &
Consumer Services
Recommendation: Add a new section 1.4.5 to read:
In the case where a jurisdiction does not reference an edition of this code
that has retroactive requirements but references a later edition where the
retroactivity requirement statement has been removed, the retroactivity
requirement, including the specified implementation time, shall apply unless
specifically exempted by the authority having jurisdiction.
Substantiation: It is conceivable that a jurisdiction could reference a certain
edition of NFPA 58 and, because of difficulty drafting and passing a change to
their laws or because of failure to even attempt to adopt the next edition, could
skip an edition. If that skipped edition contained a retroactivity requirement on
a certain piece of equipment or documentation that, for instance, was required
within a couple of years, the retroactivity statement may be removed from the
next edition. Then, when they reference the edition after the skipped edition,
they may not even realize that there was a retroactive requirement. Or they
may feel that they sidestepped the retroactivity without having to specifically
exempt the requirement.
Also, by skipping an edition, the implementation period for a retroactive
requirement might be missed. For instance, the 2001 edition of NFPA 58
required that the provisions of Chapter 11 (O&M procedures) must be in
place by 3 years after the effective date. (Section 3.3.1) If the jurisdiction
skipped the 2001 edition and went from the 1998 edition straight to the 2004
edition, the implementation period for meeting the requirement would be lost.
(Section 6.16.1 of the 2004 edition has no implementation period.) A similar
implementation period is specified for the fire safety analysis in the 2001
edition (Section 3.10.2.2) but not in the 2004 edition (Sections 6.23.3.1).
Adding this new section will make clear how skipping an edition shall be
applied in that jurisdiction.
Committee Meeting Action: Reject
Committee Statement: While the proposal has merit, it would be very difficult
to enforce in the field. The submitter is encouraged to submit comments with
specific retroactivity requirements.
Number Eligible to Vote: 30
Ballot Results: Affirmative: 24
Ballot Not Returned: 6 Lewis, J., Stookey, S., Villarreal Reza, R., Volgstadt,
F., Wilson, T., Zepp, H.
________________________________________________________________
58-2 Log #19 Final Action: Accept in Principle
(2.3.1)
________________________________________________________________
Submitter: David Soffrin, American Petroleum Institute
Recommendation: Revise text as follows:
API Standard 620, “Design and Construction of Large, Welded, Low Pressure
Storage Tanks”, 1996 2002
Substantiation: API standards are automatically withdrawn upon publication
of succeeding edition and availability is limited. In addition, latest revisions
contain the most current information and therefore should be considered as
the most suitable reference. It is the responsibility of the NFPA 58 committee
to review the the currency of all available references as part of the revision
process. This also will help minimize conflict with authorities having
jurisdiction that elect to refer to the most current edition of reference standards.
In addition, Annex K of NFPA 58 also references several other API
publications in Section K.1.2.2 that should be revised to show the most current
editions as well. These include API 2510, “Design and Construction of LPG
Installations” which should be shown as the 2001 edition. Finally we would
recommend that API 2510A, “Fire Protection Considerations for the Design
and Operation of LPG Storage Facilities”, also be considered for inclusion in
Annex K as this is a key companion document to 2510.
Note: Supporting material is available for review at NFPA Headquarters.
Committee Meeting Action: Accept in Principle
The latest edition will be referenced at the time of publication of the 2007
edition of NFPA 58.
Committee Statement: The committee thanks the submitter.
Comment on Affirmative:
STANNARD, JR., J.: I agree with the submitter’s substantiation comment
that, “It is the responsibility of the NFPA 58 committee to review the currency
of all available references as part of the revision process.” I would add that
each referenced document that is to be updated to a newer edition should be
reviewed for any relevant changes. Each reference should then be addressed as
a separate committee proposal and the committee should then consider them
individually.
________________________________________________________________
(3.3.x Permitted (New) )
________________________________________________________________
Consumer Services
Recommendation: Add a new definition for “permitted” to read:
Permitted. When used in this document, this term shall mean “allowed” or
“acceptable.” It shall not be interpreted to mean that a permit (a document
granting permission) must be secured.
OR
Each place “permitted” is used in the code change to “allowed.”
Substantiation: This is to make clear that the term “permitted” as used in this
code is not intended to require securing a permit. It is simply saying it is
allowed or acceptable. There are some jurisdictions that have interpreted
“permitted” as meaning that a permit must be secured, a reasonable
interpretation when you look at the dictionary definition.
Permitted. Allowed or acceptable, and not requiring a permit (a document
granting permission) to be secured.
Committee Statement: Accepted with editorial changes.
________________________________________________________________
(3.3.3.7.5)
________________________________________________________________
Submitter: Denyse DuBrucq, AirWars Defense
Recommendation: Add new text to read as follows:
3.3.3.7.5 Liquid Nitrogen Fire Protection. Use of the inertness and Oxygen
starvation combined with extreme cooling to end crises of fire, explosion,
leakage, and flooding.
Substantiation: One should be able to capture by extreme cooling LN
escaping from tank or line if leak is evident to prevent explosion and to quell
fire by starvation and cooling.
Committee Statement: The proposal does not provide information on how the
proposed system would work, nor its applicability to propane fire fighting. The
use of liquid nitrogen could cause brittle failure of metal propane containers
and valves.
________________________________________________________________
(3.3.10 Bulk Plant)
________________________________________________________________
Submitter: Bruce J. Swiecicki, National Propane Gas Association
Recommendation: Revise as follows:
3.3.10* Bulk Plant. A facility where the primary function is to store LP-Gas
prior to further distribution. LP-Gas is received by from cargo tank vehicle s ,
railroad tank car s , or pipeline s and then distributed by transferred into
portable containers, (package) delivery by portable tanks, and cargo tank
vehicle s for further distribution , or distributed through gas piping.
Substantiation: Portable tanks are used for “packaged” delivery of LP-Gas.
Committee Statement: The proposed revision does not add clarification.
SWIECICKI, B.: The Committee indicates that the proposed revisions to the
definition of “Bulk Plant” do not clarify the term. The T & S Committee will
continue its work to improve the accuracy of that definition.
________________________________________________________________
(3.3.11 Cabinet Heater (New), 3.3.17 Cylinder)
________________________________________________________________
Recommendation: Add new definitions as follows:
3.3.11 Cabinet Heater. A portable unvented type heater having a maximum
output rating of 20,000 btu/hr and having a self-contained LP-Gas supply.
Explanatory Material: The definition covers the capacity limitation of the
cabinet heater. Other examples of size limitations or other limitations in
definitions can be found in 3.3.44, 3.3.47, 3.3.57, 3.3.63, 3.3.64.2, and 3.3.64.3.
Renumber succeeding definitions.
3.3.17 Cylinder. A container constructed in accordance with U.S.
Department of Transportation specifications, Title 49, Code of Federal
Regulations.
58-
NFPA 58
3.3.17.1 Aluminum Cylinder. A cylinder constructed of aluminum.
3.3.17.2 Composite Cylinder. A cylinder that is either a fully wrapped fiber
reinforced cylinder with a non-metallic or non-load sharing metallic liner, or a
two part adhesively bonded cylinder without a liner.
3.3.17.3 Steel Cylinder. A cylinder constructed of steel.
Substantiation: The following changes are proposed to NFPA 58:
1. Section 3.3.11 is a new definition to describe the appliance that is being
proposed. The 20,000 Btu/hr maximum size is one-half that permitted by ANSI
Z21.11.2 for general use.
2. Section 3.3.17 is expanded to include a breakout of the different materials
that can be used for cylinders, including the composite cylinder.
This proposal seeks a change to the code to allow propane fueled cabinet
heaters to be used indoors, thereby giving the U.S. public a safe alternative to
the unsafe practice of using non-approved portable propane heaters indoors.
Cabinet heaters have been allowed by European codes for many years and are
commonly accepted by the European public for space heating and supplemental
heating. Propane fueled portable heaters are not allowed for indoor use in the
U.S. However, there is ample evidence available that the public routinely uses
unapproved propane fueled portable heaters and standard outdoor propane
cylinders indoors during winter months, particularly during winter power
outages.
This proposal is based on the recognition that significant advancements have
been made in recent years with propane cylinder construction materials,
appliance connector design, filling technology, industry regulation and the
evolution of the “re-filling” market. These facts warrant a serious consideration
of the use of cabinet heaters indoors.
The propane industry is working closely with the fire safety community to
develop a consensus fire performance protocol for cylinders approved for
indoor use. Additionally, stringent appliance and connector design requirements
are being developed by the Gas Appliance Manufacturers Association (GAMA)
and the American National Standards Institute (ANSI).
Approval of this proposal will greatly benefit the public by resulting in:
(1) A safer refueling alternative for those who replace their liquid fueled
heaters with propane fueled heaters. This switch will eliminate the need to
perform liquid transfers several times each day which will significantly reduce
the potential hazards resulting from fuel spillage.
(2) The establishment of a listing standard to which cabinet heaters would be
designed, manufactured and sold. This standard would fill the void where no
standard currently exists.
Add new definitions as follows:
3.3.11 Cabinet Heater. A portable unvented type heater having a maximum
output rating of 20,000 btu/hr and having a self-contained LP-Gas supply.
3.3.17 Cylinder. A container designed, constructed, tested and marked in
accordance with U.S. Department of Transportation specifications, Title 49,
Code of Federal Regulations , or in accordance with a valid DOT exemption .
3.3.17.1 Aluminum Cylinder. A cylinder constructed of aluminum.
3.3.17.2 Composite Cylinder. A cylinder constructed with fully wrapped fiber
reinforced material, or a two part adhesively bonded non-metallic cylinder.
3.3.17.3 Steel Cylinder. A cylinder constructed of steel.
Committee Statement: Inappropriate material is deleted.
Ballot Results: Affirmative: 20 Negative: 3 Abstain: 1
Explanation of Negative:
CZISCHKE, R.: UL has reviewed this matter very carefully and believes it is
premature to support cabinet heaters as currently proposed. UL’s concerns
about authorizing 20 lb cylinders of liquid propane for indoor residential use at
this time are:
A) The routine indoor use of 20 lb cylinders of propane may be too great of a
fuel load without any established experience or supporting research.
B) Once the cylinder begins to leak gas during a fire event, there does not
seem to be a way to stop the leak.
C) While not authorized, consumers will probably store spare cylinders
indoors. The proposals do not address storage of spare cylinders. This product
has the potential to blur the line between what consumer products may or may
not be safe to use indoors (e.g. steel cylinders used with BBQ gas grills, patio
lamps, camping equipment) and may promote indoor storage of large quantities
of LP-Gas in various forms.
D) The cabinet heater appliance standard has yet to be developed.
Construction and performance requirements are unknown at this time. ANSI
Z21.11.2 is referenced in the proposal as the applicable product standard, but
the ANSI Technical Committee has stated that portable cabinet heaters are not
under the scope of ANSI Z21.11.2. Oxygen Depletion Systems (ODS) may not
operate correctly in portable appliances at all times.
E) Unique configurations are appropriate to minimize the risk of connection
of other types of cylinders (e.g. steel). However, the unique cylinder connection
design from the cylinder to the appliance has not been finalized.
F) Although there is a DOT exemption on the cylinder, there has not been a
great deal of experience or history with composite cylinders in LP-Gas
applications in this country.
G) Research on the fire performance of composite cylinders is not completed
and the fire services community has not reviewed all of the results.
KING, J.: Certain parts of this proposal support a change in the Code to allow
the use of portable, unvented cabinet heaters in residential occupancies. This
use would not be in the best interest of consumer safety, and should not be
approved. Therefore a definition of this type of appliance should not be added.
MORTIMER, F.: This proposal is in connection with allowing 20 pound
cylinders to be used inside of buildings, with cabinet heaters, which is an
increase of 10 times the currently allowed limit. This proposal is not in the best
interest of safety.
Explanation of Abstention:
MAXON, R.: The Compressed Gas Association requires additional time to
review this proposal with the CGA membership. The CGA expects to comment
for the ROC meeting.
________________________________________________________________
58-7 Log #CP6a Final Action: Accept
(3.3.13 Compressed Gas)
________________________________________________________________
Submitter: Technical Committee on Liquefied Petroleum Gases
Recommendation: Revise 3.3.13 to read:
3.3.13 Compressed Gas. Any material or mixture having, when in its
container, an absolute pressure exceeding 40 psia ( an absolute pressure of 276
kPa) at 70°F (21.1°C) or, regardless of the pressure at 70°F (21.1°C), having an
absolute pressure exceeding 104 psia ( an absolute pressure of 717 kPa) at
130°F (54.4°C).
Substantiation: The revisions address the metric conversion of absolute
pressure consistently.
Committee Meeting Action: Accept
Ballot Results: Affirmative: 23 Negative: 1
MAXON, R.: The definition is in conflict with the CGA “Compressed Gas
Handbook”.
The Handbook states: A compressed gas is any material or mixture in a
container having an absolute pressure exceeding 40 psi at 70º F (275.5 kPa at
21.1 ºC) or regardless of the pressure at 70º F (21.1 ºC) having a absolute
pressure exceeding 104 psi at 130º F (717 kPa at 37.8 ºC) as determined by
ASTM Test D-323.
________________________________________________________________
58-8 Log #59a Final Action: Accept
(3.3.26, 3.3.2.6.1, 3.3.2.6.2)
________________________________________________________________
Recommendation: Revise NFPA 58 as follows:
3.3.26 Flexible Connector . A short [not exceeding 36 60 in. (1.52m) overall
length] piping system component that is fabricated from a flexible material (
such as hose ) and equipped with suitable connections on at both ends.
3.3.26.1 Flexible Hose Connector. A component fabricated from LP-Gas hose
that meets the requirements of UL 569 “Standard for Pigtails and Flexible Hose
Connectors for LP-Gas” or the following requirements of UL 21 “Standard for
LP-Gas Hose”:
1. The tube or lining of a hose shall be made from a material compatible with
LP-Gas.
2. The hose reinforcement shall be of cotton, synthetic fibers, or corrosionresistant material such as stainless steel, or any combination thereof, evenly
applied over the tube.
3.3.26.2 Flexible Metallic Connector. A component fabricated from flexible
metal such as stainless steel wire braid or soft copper tubing.
Substantiation: The absence of proper definitions for a flex connector creates
confusion as to what an installer should or should not use in a piping system.
Therefore, the new definitions in this proposal actually define the material
component used in various flexible connectors. Now, as different flexible
connectors are required in the Code, there are appropriate definitions that
correspond with the actual material used.
The length was extended to 60 inches because flexible connectors are
necessarily longer than 36 inches due to tank separation requirements. Shorter
lengths of flexible connectors required additional connections that could be
subject to leaks. Flexible connectors in permanent installations are restricted to
flexible metallic connectors for durability.
Flexible hose connectors or flexible metallic connectors are allowed for
portable and exchange cylinders. This construction is successfully used in
many industries including the RV industry. Flexible hose connectors up to 60
inches in length would only be used for portable exchange cylinders. The extra
flexibility will improve the safety for frequently exchanged cylinders.
Flexible hose connectors and flexible metallic connectors, longer than 36
inches, are successfully being used in areas subject to seismic forces for piping
system flexibility. The additional length is important in providing flexibility
between a container and the piping system to decrease the chance of
uncontrolled release of gas.
The use of stainless steel wire braid hose is an accepted practice for motor
fuel supply lines. The stainless steel reinforced tube provides extra protection
for the tube assembly within the flexible hose connector.
A.3.3.26 is deleted because it is no longer needed.
58-
NFPA 58
FREDENBURG, R.: The definitions for 3.3.26 and 3.3.26.2 are OK. The
definition for 3.3.26.1 is divided into subsections, which is inconsistent with
the rest of the definitions for defining a single item, and it contains
requirements, which should be listed in chapter 5.
CZISCHKE, R.: The definition of a Flexible Hose Connector should include
reference to the requirements of the Standard for Pigtails and Flexible Hose
Connectors for LP-Gas, ANSI/UL569, or LP-Gas hose that meets the
requirements of the Standard for Safety of LP-Gas Hose, ANSI/UL21.
Reference to the applicable ANSI product standards for LP-gas hose eliminates
the need for redundant product level requirements in the code and refers to the
appropriate comprehensive product requirements. This makes the code more
concise and complete, and promotes effective practical enforcement.
described by ASME.
Committee Statement: Accepted with an editorial revisions.
STANNARD, JR., J.: The committee meeting action did not include 4.2.2.
________________________________________________________________
(3.3.57 Portable Tank)
________________________________________________________________
3.3.57 Portable Tank (or Skid Tank). A container of more than 1000-lb
(454 kg) water capacity that is designed and fabricated with permanently
mounted on skids or runners, or in a full framework, is equipped with protected
container appurtenances, and is used to transport LP-Gas.
Substantiation: The definition of portable storage tank is revised to be
________________________________________________________________ consistent with DOT regulations, CFR 49, 178.245.
58-9 Log #59f Final Action: Accept
Paragraph 5.2.7.3 is revised to be consistent with DOT regulations, CFR 49,
(3.3.26 Flexible Connector, A.3.3.26)
Section 178.245.
________________________________________________________________ Paragraph 6.7.2.3 is revised to be consistent with the definition of “Portable
Tank”.
Recommendation: Delete text as follows:
Paragraph 7.4.3.1 is revised by deleting reference to specific DOT
A.3.3.26 Flexible Connector. LP Gas-resistant rubber and fabric (or metal),
specifications for cargo tanks and portable tanks as other specifications may
a combination of such rubber and fabric, or metal only should be used. Flexible exist.
connectors should be used where there is the need for, or the possibility of,
Paragraph 9.3.3.2 is revised to correct a cross reference error, and to require
greater relative movement between the points connected than is acceptable for
that portable containers comply with DOT regulations, as DOT regulations
rigid pipe.
apply during transportation.
Substantiation: The absence of proper definitions for a flex connector creates Paragraph C.1.1.2 is revised to recognize that tank cars are do not incorporate
DOT cylinders, and editorial revisions are made.
Paragraph D.1.1.2, D.2.4.1 and D.2.4.4 are revised to recognize that portable
tanks are containers. Par D.2.4.4 is also revised to recognize that Table D.2.4.4
covers pressure specifications only.
Committee Statement: See also 58-33 (Log #CP25b), 58-78 (Log #CP25c),
58-125 (Log #CP25d), 58-135 (Log#CP25e), 58-180 (Log#CP25f), and 58-182
(Log #90).
subject to leaks. Flexible connectors in permanent installations are restricted to Number Eligible to Vote: 30
inches in length would only be used for portable exchange cylinders. The extra MCTIER, S.: Improve clarity of the definition with the following corrected
language:
“A container of more than 1000-lb (454 kg) water capacity that is designed
inches, are successfully being used in areas subject to seismic forces for piping and fabricated with permanently mounted on skids or runners, or in a full
framework is equipped with protected container appurtenances and is used to
transport LP-Gas. It is designed and fabricated with permanently mounted
skids or runners or is fabricated and installed within a full framework.”
________________________________________________________________
(3.3.69 Cubic Feet (SCF) and 3.3.70 SCFM (New))
________________________________________________________________
Submitter: Phani K. Raj, Technology & Management Systems, Inc.
Recommendation: Add new definitions as follows:
3.3.69 Cubic Feet (SCF). A SCF is the volume of gas in cubic feet at the
standard atmospheric conditions at 60°F (15.6°C) and 14.7 psia (101 kPa).
________________________________________________________________ 3.3.70 SCFM. The flow rate of gas measured in standard cubic feet per minute.
Substantiation: At present no definition is provided in the pamphlet for the
(3.3.30.1, 3.3.40, 4.2.2,)
standard cubic feet even though it is used (§ 12.8.4.4). There is no “standard”
________________________________________________________________ definition for the SCF unless it is specified. The natural gas industry and the
Mechanical Engineer’s handbook define the “standard conditions of
atmosphere” as being at 60°F and 14.7psia, whereas, certain regulatory
3.3.30.1 Fixed Liquid Level Gauge. A liquid level indicator that uses a positive agencies (Air Resources Board, CA) use the conditions at 70°F and 14.7 psia.
shutoff vent valve to indicate that the liquid level in a container being filled has To avoid confusion and to be very specific in a Code document (such as the
reached the minimum initial point at which the indicator communicates with
NFPA 58 pamphlet) the SCF and SCFM definitions should be included. Once
the liquid level in the container.
this is done, certain omissions in not specifying the conditions of the gas when
3.3.40 The maximum pressure at which a pressure vessel is to operate is as
measuring the cubic foot will not be serious (see §5.7.2.5 and proposal Log
described by ASME.
#41).
4.2.2 Odorization, however , shall not be required if it is harmful in the use
or further processing of the LP-Gas or if such odorization will serve no useful
Accept the definition of Cubic Foot.
purpose as a warning agent in such further use or processing.
Add a definition of SCFM from NFPA 1901;
Substantiation: These changes are editorial in nature.
SCFM. Standard cubic feet per minute.
Committee Statement: Accepted, but the definition from the Glossary of
terms of SCFM is preferred.
Accept the proposed revision to 4.2.2. Revise 3.3.30.1 and 3.3.40 to read:
3.3.30.1 Fixed Liquid Level Gauge. A liquid level indicator that uses a positive Ballot Results: Affirmative: 24
shutoff vent valve to indicate that the liquid level in a container being filled has Ballot Not Returned: 6 Lewis, J., Stookey, S., Villarreal Reza, R., Volgstadt,
reached the minimum point at which the indicator communicates with the
liquid level in the container.
3.3.40 The maximum pressure at which a pressure vessel is to operate is as
58-
NFPA 58
________________________________________________________________
(4.3.1)
________________________________________________________________
Submitter: James Everitt, Western Regional Fire Code Development
Committee
Recommendation: Revise to read:
4.3.1 Stationary Installations. Plans for stationary installations utilizing
storage containers of 499-gal ( 7.6 1.9 -m3 ) or greater individual water
capacity, or with aggregate water capacity of 998 gals or greater ( 15.1 3.78
m3), and all rooftop, mounded or underground container installations of ASME
containers shall be submitted to the authority having jurisdiction by the person
or company that either installs or contracts to have the containers installed
before the installation is started. [See also 6.17.11.1(F).]
Substantiation: Lowering the threshold for submittal of plans for rooftop tanks
and requiring plans for all mounded or underground tanks allows the local
jurisdiction to conduct necessary safety inspections for tank features and proper
siting on the property.
Committee Statement: The proposal would add an unnecessary burden on the
AHJ and the marketer.
________________________________________________________________
(4.3.1)
________________________________________________________________
Consumer Services
Recommendation: Add the following text to the existing text:
Multiple containers up to and including 6000 gallons aggregate water capacity
in vapor service only are not considered as a bulk plant or industrial plant
provided they are not manifolded together.
(May want to add section A.4.3.1 with additional explanatory material.)
Substantiation: There are a number of installations in agricultural areas that
have 4, 5, 6, or more 1000-gallon containers, each serving one vapor service
appliance, such as a tobacco bulk barn. Usually they are not manifolded
together. One tank serves one or two barns and is not connected to another
propane container in any way. They are merely co-located. These sites come
and go as needs dictate. We feel that such a “plant” does not warrant the review
and documentation required of a bulk plant.
Committee Statement: The committee is processing a formal interpretation on
the subject. The requirement is an interpretation which should not be in the
Code.
________________________________________________________________
(4.3.1 and 4.3.2)
________________________________________________________________
Consumer Services
Recommendation: Revise text to read as follows:
4.3.1 “...4000 gal (15.1 m3), and all rooftop installations of ASME containers,
and installations where product is transferred directly from railcar to truck shall
be submitted to the authority having jurisdiction...”
4.3.2 “...installations of the container sizes or facilities covered in 4.3.1...”
Substantiation: We recently learned of a facility where transfer of LP-Gas
directly from railcar to transport truck is performed but no storage containers
are present. Information is that several hundred railcar loads would be
transferred each year. This type of facility does not appear to be in the scope of
NFPA 58. This type of facility should come under jurisdiction of the AHJ, as
piping, equipment, hoses, operating and maintenance procedures, etc., should
come under the inspection responsibilities of the AHJ.
Committee Statement: The committee does not believe that the proposal is
needed.
CZISCHKE, R.: Transfer operations from a rail car into a truck should require
the AHJ to be notified.
FREDENBURG, R.: I continue to believe that an operation as big as
transferring directly from a rail car to a truck should require the AHJ to be
notified. Additional requirements for such a transfer are included in the
accepted proposal 58-121 (Log #60). Those requirements are so safety related
that it begs to have an approval, inspection, observation, or whatever the AHJ
deems appropriate. Having witnessed a major operation being set up for this
type of transfer in the middle of a small town with no inclusion of local or state
inspectors until state officials were called in by citizens, I know it can happen.
There were a couple of significant safety issues the operators would have
violated had we not inspected the equipment. We are still dealing with training
issues in this operation.
________________________________________________________________
(4.3.2)
________________________________________________________________
Committee
4.3.2 Temporary Installations. The authority having jurisdiction shall be
notified of temporary (not to exceed 6 months) installations of containers
having an individual water capacity of 125 gal or greater prior to installation.
Substantiation: There are many temporary installations of LP-gas tanks below
the thresholds set forth in Section 4.3.1 that the jurisdiction should be made
aware of. For instance, temporary LP-gas tanks installed to fuel construction
site heaters and temporary boilers. In many cases these systems are installed in
busy downtown metropolitan areas. Without notification the jurisdiction does
not have an opportunity to inspect the safety features associated with the
installation, including flex hoses, site security and locations subject to vehicle
impact.
Committee Statement: The committee believes that the proposed requirement
would place an unnecessary burden on enforcement officials.
BELKE, J.: The submitter makes a compelling case for AHJ notification of
smaller temporary installations.
KING, J.: Even when Code requirements are met, adequate horizontal
separation may not be provided between the point of transfer for this type of
activity, residences, and other structures frequented by the public. Given the
potential for injury and loss of life if an accident occurs during this type of
liquid transfer operation, review and approval by the authority having
jurisdiction (AHJ) is in the best interest of public safety.
FREDENBURG, R.: Yes, the submitter makes a valid argument and, having
found exactly what he describes, I would love the opportunity to set some of
the bad installations straight myself and so have my inspectors as we find them
in our regular travels. But the temporary installations are far too numerous to
be able to visit them and still do other tasks required of our staff. If this
proposal were approved, many roofing companies, probably a majority of the
construction companies working on large commercial buildings, and many
propane companies would have to notify the AHJ. My site inspectors (4 of
them for the whole state) would be inundated with these notices. And why
would this be limited to temporary installations? We just as often see
permanent installations that also need correction. Yes, the risk is somewhat
higher at construction sites with constantly shifting locations and heavy
equipment. But how many notices to the AHJ would have to be given for one
site I saw where the tank changed location every week or so to accommodate
shifting work locations, supplies storage, and vehicle movement. It would
become a large part of the work load, even for a local inspection department.
________________________________________________________________
58-17 Log #93 Final Action: Accept
(4.3.2)
________________________________________________________________
4.3.2 Temporary Installations. The authority having jurisdiction shall be
notified of temporary (not to exceed 6 12 months) installations of the container
sizes covered in 4.3.1 before the installation is started .
Substantiation: This change will correct an error in the definition of
“temporary installations” that occurred after changes were made in the text of
the 2001 Edition of NFPA 58. Paragraphs 2-2.5.4 and 3-2.9.4 covering
“temporary installations” in the 1998 Edition of NFPA 58 were changed from
“6 months” to “12 months” in both the comparable paragraphs 2.2.5.3 and
3.2.8.1 of the 2001 Edition and the comparable paragraphs 5.2.7.2 and 6.6.5.1
of the 2004 Edition . In addition, new subsection 9.3.4 of the 2004 Edition also
shows not more than “12 months” for “temporary installations”. These are the
only three places where “temporary installations” are addressed other than
4.3.2 covering notification of the authority having jurisdiction in the 2004
Edition. As a result, we should change “6 months” to “12 months” in 4.3.2 as
shown above.
BELKE, J.: I disagree with allowing temporary installations for up to 12
58-
NFPA 58
months. The committee had amended the code in 1998 to restrict the allowed
period for temporary installations to 6 months, but has since relaxed the
requirement back to 12 months.
KING, J.: A change from 6 months to 12 months for the maximum
installation period for temporary installations is not in the best interests of
public safety.
MORTIMER, F.: Temporary installations of 12 months is too long. If it is
temporary 6 months is plenty of time.
________________________________________________________________
58-18 Log #116a Final Action: Reject
(4.4.1)
________________________________________________________________
4.4.1 Personnel qualifications after 2005 must include knowing when and
how to use the various Liquid Nitrogen techniques related to liquid flammables
and gaseous flammables.
and valves.
________________________________________________________________
(4.7)
________________________________________________________________
Consumer Services
Recommendation: Create a new section 4.7 with a heading of “Electrical
Equipment” and place in it the existing section 6.20.2. Replace the existing
section 6.20.2 with instructions to see the new 4.7 for requirements for
electrical equipment.
See related proposals for Chapters 10 and 13.
Substantiation: Moving the section from Chapter 6 to Chapter 4 (general
requirements) will make the requirements apply to all installations unless
specifically excepted. These requirements seem to be appropriate for all
installations but are not specifically required in the current code in a number of
places where one would think they should apply.
KING, J.: This change will confuse many users of the Code, and therefore is
not in the best interests of safety. There is also no demonstrated need at this
time for such a change. If there is a need to expand the provisions of 6.20.2 to
cover other locations besides those specifically identified in Table 6.20.2 a
separate proposal should be submitted.
MCTIER, S.: Virtually all of the requirements for electrical equipment
installations are located in subsection 6.20.2 and includes Table 6.20.2.2 that
covers electrical installation requirements for 16 locations. References to this
subsection on electrical equipment are found in 6.16.4, 9.4.4.4, 13.2.1.9,
13.2.1.11, and 13.2.2.3. The author of this proposal also recommended that a
new subsection 13.2.2 replace 13.2.1.9 to give it more prominence and it
references 6.20.2. Most users of the code are already well acquainted with the
location of 6.20.2 and its all encompassing table and know that it covers
electrical equipment installation for the whole code. Moving the text to a new
4.7 that is a chapter covering general issues rather than installation
requirements does not solve any perceived problem.
________________________________________________________________
(Chapter 5 and Chapter 6)
________________________________________________________________
Consumer Services
Recommendation: In an effort to better align section numbers in Chapters 5
and 6, revise the section numbers as follows:
6.7.4.7 6.7.5 Where a vent line is used to comply with the point of discharge
requirements, it shall comply with 6.7.4.8(1) 6.7.5.1(1) and 6.7.4.8(3)
6.7.5.1(3).
6.7.4.8 6.7.5.1 The discharge from the required pressure relief device of a
second-stage regulator other than a line pressure regulator, installed inside of
buildings in fixed piping systems shall comply with the following:
(remainder unchanged)
6.7.4.9 6.7.5.2 The requirement in 6.7.4.8 6.7.5.1 shall not apply to
vaporizers.
6.7.4.10 6.7.4.7 Single-stage regulators shall be permitted to be used only on
portable appliances and outdoor cooking appliances with input ratings of
100,000 Btu/hr (29 kW) maximum.
6.7.4.11 6.7.4.8 Line pressure regulators shall be installed in accordance with
the requirements of NFPA 54, National Fuel Gas Code.
6.7.6 Reserved
6.7.7 Reserved
6.7.8 Reserved
6.7.9 Reserved
6.7.10 Reserved
6.7.11 Reserved
6.8.6 Reserved
Substantiation: There are sections in Chapters 5 and 6 that do not align as
well as they could. This alignment was initiated with the 2004 edition with the
intent of making the alignment better as the need was seen.
________________________________________________________________
(5.1)
________________________________________________________________
5.1 Scope.
(2) The field assembly of components, subassemblies, container assemblies, or
complete container systems into complete LP-Gas systems is addressed in
Chapter 6 . (See 3.3.36, LP-Gas System.)
Substantiation: Without this change, people will be misled to believe that
Chapter 5 addresses the assembly and installation of systems. It does not. Also
see 2.1.2 of the 2001 edition of NFPA 58.
Relocate 5.1(2) to A.5.1, and merge 5.1(1) into 5.1.
Committee Statement: Advisory text relocated to the annex.
________________________________________________________________
58-22 Log #CP8 Final Action: Accept
(5.2.1, 5.2.1.1)
________________________________________________________________
Recommendation: Revise 5.2.1 to read as follows:
5.2.1 General.
5.2.1.1* Containers shall be designed, fabricated, tested, and marked (or
stamped) in accordance with the regulations of the U.S. Department of
Transportation (DOT), the ASME Boiler and Pressure Vessel Code, Section
VIII, “Rules for the Construction of Unfired Pressure Vessels,” or the APIASME Code for Unfired Pressure Vessels for Petroleum Liquids and Gases,
except for UG-125 through UG-136.
(A) Adherence to applicable ASME Code case interpretations and addenda
that have been adopted and published by ASME 180 calendar days prior to the
effective date of this code shall be considered as compliant with the ASME
Code.
(B) Containers fabricated to earlier editions of regulations, rules, or codes
listed in 5.2.1.1 and of the Interstate Commerce Commission (ICC) Rules for
Construction of Unfired Pressure Vessels, prior to April 1, 1967, shall be
permitted to be continued to be used in accordance with Section 1.4.
(C) Composite cylinders shall be listed.
Substantiation: Composite cylinders are new to propane distribution in the
U.S., and the committee believes that listing is needed for safety.
MAXON, R.: The Composite cylinder is specifically a cylinder manufactured
to DOT (US Department of Transportation) exemptions. There is insufficient
safety information relative to any listing to a proposed UL standard.
CZISCHKE, R.: UL supports composite cylinders being listed because the
standard that was used as the basis of the DOT exemption does not include
comprehensive fire performance and other considerations that would be
experienced in service. The listing would at this time address composite
cylinders for industrial, commercial and outdoor use. As noted in comments for
58-6, 58-51 and 58-100, UL does not support cabinet heaters at this time.
58-
NFPA 58
________________________________________________________________
(5.2.1.1(C))
________________________________________________________________
Submitter: Richard L. Gilbert, Railroad Commission of Texas
Recommendation: Add new text as follows:
5.2.1.1(C) Containers authorized for use by the U.S. DOT under an approved
exemption issued by the U.S. DOT may only be used for the transportation in
commerce of the materials authorized by the exemption and may not be placed
in consumer use.
Substantiation: U.S. DOT exemption E-13105 for certain composite cylinders
disclaims any safety considerations for hazards and risks associated with
consumer use. This Agency is hesitant to allow these cylinders in consumer
usage without safety certification from a recognized entity.
Committee Statement: Refer to Committee Action on 58-22 (Log #CP8).
________________________________________________________________
(5.2.1.2)
________________________________________________________________
Recommendation: Add a new sub-paragraph ( D ) to 5.2.1.2 and move the
language from 5.2.3.2 into this location as follows:
5.2.1.2 (D) DOT 4E specification (aluminum) cylinders involved in a fire
shall be permanently removed from service.
Substantiation: This paragraph that covers cylinders in a fire should be
located as a part of 5.2.1.2 and 5.2.3.2 should be deleted.
Refer to Committee Action on 58-25 (Log #108).
Committee Statement: The committee believes that the revision made in 5825 (Log #108) accomplish the intent of the proposal.
________________________________________________________________
(5.2.1.2(D) (New) )
________________________________________________________________
Recommendation: Insert new text:
5.2.1.2 (D) DOT 4E specification (aluminum) cylinders and composite
cylinders involved in a fire shall be permanently removed from service.
The addition of section 5.2.1.2 (D) is actually moving current section
5.2.3.2(D) into a more appropriate location, and also including composite
cylinders within its scope.
outages.
This proposal is based on the recognition that significant advancements
have been made in recent years with propane cylinder construction materials,
The propane industry is working closely with the fire safety community
to develop a consensus fire performance protocol for cylinders approved for
________________________________________________________________
(5.2.3.2)
________________________________________________________________
Recommendation: Delete existing text:
5.2.3.2 DOT 4E specification (aluminum) cylinders involved in a fire shall be
permanently removed from service.
The addition of section 5.2.1.2 (D) is actually moving current section
5.2.3.2(D) into a more appropriate location, and also including composite
cylinders within its scope.
outages.
________________________________________________________________
(5.2.4.1, 5.2.4.3)
________________________________________________________________
Recommendation: Make the following revisions to the text of the 2004 edition
of NFPA 58:
Section Number:
5.2.4.1 - “The minimum design or service pressure of cylinders...”
Table 5.2.4.2 Note c - “c. See 6.21.3.1(A)... for required minimum design
pressure maximum allowable working pressure (MAWP) for ASME...”
5.2.4.3(B) - “ Design maximum allowable working pressure shall be...”
A.5.2.4.4 - “ASME mobile fuel containers... required to have a design
maximum allowable working pressure ( MAWP) of...”
Substantiation: The proposed changes will correlate the terminology in NFPA
58 with the terminology used in the ASME Boiler and Pressure Vessel Code.
MCTIER, S.: Delete “minimum” in paragraph 5.2.4.1 as it is not needed.
________________________________________________________________
(5.2.4.2)
________________________________________________________________
Recommendation: Merge the first two columns of this table into a single
column and properly define the column heading as shown below:
Maximum Vapor
Pressure in psig (MPag)
At 100oF (37.8 oC)
At 37.8°C
80 (0.6)
(0.6)
100 (0.7)
(0.7)
125 (0.9)
(0.9)
150 (1.0)
(1.0)
175 (1.2)
(1.2)
215 (1.5)
(1.5)
215 (1.5)
(1.5)
58-
NFPA 58
Substantiation: In the current table the first two columns are confusing. The
second column seems to imply that certain other pressures are being specified
at 37.8°C, while this is not so. There should be only one column with both
psig and Mpag numbers as in other columns. This is just a format change for
consistency.
MCTIER, S.: The following tables show metric equivalents in a separate
column for lengths, areas, and volumes. – Tables 4.1.1, 6.3.1, 6.3.9, 6.4.2,
6.4.5.8, 6.5.3, 6.6.3.3, 6.19.3.6, 6.19.5.2, 6.21.3.1,7.4.2.3(a) through (3),
8.4.1.2, 9.3.2.9, 12.7.1, 12.7.2.
Two tables show the metric equivalent of pressure in a separate column. They
are Tables 5.2.4.2 and D2.1.5.
Two tables show the metric equivalent of pressure in the same column. They
are 5.15.1.2 and 6.8.3.5.
Finally, Tables B.1.2(a) and B.1.2(b) show the English in one table and the
metric in a separate table
Obviously, the vast majority of tables showing English vs. metric equivalents
have separate columns for the metric equivalents. We can correct all of the
tables by using separate columns for the English and the metric but mark the
columns with psig and MPag to make it clear as shown in Table D.2.1.5.
________________________________________________________________
(5.2.4.2)
________________________________________________________________
5.2.4.2* ( Remove the asterisk from 5.2.4.2 as the asterisk should be by
5.2.5.4*.
Change A.5.2.4.2 to A.5.2.5.4 in the Annex and modify as shown below.)
A.5.2.5.4 Containers fabricated on or before July 1, 1961 were exempt from
this requirement.
Substantiation: These changes are editorial in nature.
Revise as follows:
1. 5.2.4.2* Remove the asterisk from 5.2.4.2.
2. Change A.5.2.4.2 to A.5.2.5.4 in the Annex and modify as shown in (3).
3. A.5.2.5.4 Containers fabricated on or before July 1, 1961 were are exempt
from this requirement.
Committee Statement: Accepted with a correction.
________________________________________________________________
(5.2.6, 5.2.6.2)
________________________________________________________________
5.2.6 Portable Container Appurtenance Physical Damage Protection.
5.2.6.2 Protection of appurtenances of portable containers, skid tanks, and
tanks for use as cargo tanks of more than 1000 lb (454 kg) water capacity
[nominal 420 lb (191 kg) LP-Gas capacity] shall comply with 5.2.6.2(A)
through 5.2.6.2(C).
(A) Appurtenance protection from physical damage shall be provided by
recessing, by protective housings, or by location on the vehicle.
(B) Appurtenance protection shall comply with the provisions under which the
containers are fabricated.
(C) Appurtenance protection shall be secured to the container in accordance
with the ASME code under which the container was designed and built.
designed to withstand static loadings in any direction equal to twice the weight
of the container and attachments when filled with LP-Gas, using a minimum
safety factor of 4, based on the ultimate strength of the material used.
Substantiation: The ASME code safety factor has been changed from 4 to 3.5.
Rather than try to keep up with each individual requirement of the ASME code,
we should simply refer to the ASME code, as is also done in CFR-49.
MCTIER, S.: It has already been accepted in 58-31 to change “LP-Gas” in
line 2 of 5.2.6.2 to “propane”.
________________________________________________________________
(5.2.6.1, 5.2.6.2, 5.2.8.4, 6.17.2.1(2), 6.17.4.8, 6.17.4.9(2) and (3), 6.17.5.1.1,
6.17.6.1(A), 6.17.7.2.(1), 6.17.9.1(1), 6.17.9.2(1) 6.17.10(b), 6.17.11.1(A),
8.3.3, 8.3.3.4, 9.3.2.1 9.3.2.5(B), 9.3.2.10, 9.3.3.1, 9.3.3.7, 11.2.4.3(3) and
Table 5.7.6.2)
________________________________________________________________
Recommendation: Modify the following sections of NFPA 58 by deleting
“LP-Gas capacity” and substituting “Propane capacity”:
5.2.6.1, 5.2.6.2, 5.2.8.4, 6.17.2.1(2), 6.17.4.8, 6.17.4.9(2) and (3),
6.17.5.1(1), 6.17.6.1(A), 6.17.7.2(1) (twice) , 6.17.9.1(1), 6.17.9.2(1) (twice) ,
6.17.10(B), 6.17.11.1(A), 8.3.3, 8.3.3.4, 9.3.2.1, 9.3.2.5(B), 9.3.2.10, 9.3.3.1,
9.3.3.7, 11.12.4.3(3), and Table 5.7.6.2.
Substantiation: In many cases as shown below we are stating LP-Gas
capacity rather than propane capacity. Since we are using propane weight for
the conversion, we need to change all of the “LP-Gas capacity” to “propane
capacity” except where we have disposable cylinders which could also contain
propane-butane mixes.
________________________________________________________________
(5.2.7.2)
________________________________________________________________
5.2.7.2 ASME containers to be used as portable storage containers including
movable fuel storage tenders and farm carts for temporary stationary service
(normally not more than 12 months duration at any location) shall comply with
5.2.7.2(A) through 5.2.7.2(D).
(A) Steel legs or supports shall be either welded to the container by the
manufacturer at the time of fabrication or attached to lugs that have been
welded to the container.
(B) (A) The legs or supports or the lugs for the attachment of legs or supports
shall be secured to the container in accordance with the ASME code or rule
under which the container was designed and built. , using a minimum safety
factor of 4, to withstand loading in any direction equal to twice the weight of
the empty container and attachments.
(C) (B) The attachment of a container to either a trailer or semi-trailer running
gear, or the attachments to the container to make it a vehicle, so that the unit
can be moved by a conventional over-the-road tractor, shall comply with the
DOT requirements for cargo tank service. The stress calculations for the design
of the attachment shall be based on twice the weight of the empty container.
(D) (C) The unit shall be approved for stationary use .
Substantiation: Paragraphs 5.2.7.2 (A) and (B) are combined.
As the ASME Boiler and Pressure Vessel Code design margin has been
changed from 4 to 3.5, reference is made to the ASME code rather than
transcribing ASME code requirements.
Paragraph 5.2.7.2 (C) is revised to limit approval to stationary service, as the
AHJ may not be competent to certify that the vehicle is in compliance with
applicable over-the-road requirements, which are specified in 9.5.2.2.
Paragraph 6.6.5.1 is revised to recognize the combination of 5.2.7.2 (A) and
5.2.7.2 (B).
Paragraph 9.3.4 is revised to recognize that DOT has issued an exemption for
certain agricultural users.
Committee Statement: See 58-75 (Log #CP24b) and 58-136 (Log #CP24c).
FREDENBURG, R.: We need to make a change to the sections included
in the requirements. 5.2.7.2(D) in the first sentence should be changed to
5.2.7.2(C).
________________________________________________________________
58-33 Log #CP25b Final Action: Accept
(5.2.7.3)
________________________________________________________________
Recommendation: Revise 5.2.7.3 to read:
5.2.7.3 Portable tank design and construction , securing of a full framework,
skids , or lugs for the attachment of skids, and protection of fittings shall be
in accordance with DOT portable tank specifications. The bottom of the skids
shall be not less than 2 in. (50 mm) or more than 12 in. (300 mm) below the
outside bottom of the tank shell.
Substantiation: To comply with CFR 49, Section 178.245.
58-
NFPA 58
________________________________________________________________
(5.2.7.4)
________________________________________________________________
5.2.7.4 Renumber paragraph 5.2.7.4 to a new 5.2.7.2(E) .
Substantiation: Editorial changes by locating the text to a more appropriate
location.
________________________________________________________________
(5.2.8.5)
________________________________________________________________
Recommendation: Change NFPA 58 as follows:
5.2.8.5 All ASME containers that contain unodorized LP-Gas products shall
be marked “NOT ODORIZED” in letters 4 in. in height with a contrasting
background surrounded by a 1/2 in. rectangular border in red letters and red
border in the sizes shown in Table 5.2.8.5. The markings shall be on both ends
or on both sides of a container or on both sides and the rear of cargo tanks.
Table 5.2.8.5 Not Odorized Label size
Water Capacity (gal.) Letter Height (in.) Border Width (in.)
499 & over
½
49
2.6 To 48
1 To 2.5
4
(10 cm)
To 4981.5 (3.7 cm)
3/4 (1.8cm)
(1.3cm)
5/16 (.8 cm)
¼
(.6cm)
3/8 (1 cm)1/16 (.2cm)
Substantiation: This proposal will restore wording inadvertently deleted in the
2004 Edition of NFPA 58. Additionally, the 2004 edition of NFPA 58 only
addresses ASME containers. This proposal clarifies that all containers shall be
marked with lettering size appropriate for the container. The proposal further
enhances the identification of shipments of gas that are not odorized.
5.2.8.5 All ASME containers that contain unodorized LP-Gas products shall be
marked “NOT ODORIZED” . in letters 4 in. in height with The marking shall
have a contrasting background surrounded by a 1/2 in. rectangular border in
red letters and red border in the sizes shown in Table 5.2.8.5. The markings
shall be on both ends or on both sides of a container or on both sides and the
rear of cargo tanks.
Committee Statement: Accepted, with an editorial revision.
________________________________________________________________
(5.3)
________________________________________________________________
Submitter: Joe Sternola, Permagas, Inc.
Recommendation: Add text to read as follows:
5.3 LP Gas Hose
5.3.1 The inner tube of LP Gas hose shall be compatible with LP Gas.
Substantiation: Hose material is now contaminating LP Gas. See PERC report
on the Internet at: http://www.propanecouncil.org/files/11297_PERC_LPGas_
Hoses_Final_Report_voll.pdf
Add a new 5.8.6.2 to read:
5.8.6.2 LP-Gas hose inner material shall not contaminate LP-Gas nor
decompose in the presence of LP-Gas.
CZISCHKE, R.: UL believes the proposal as presently written regarding
contamination is unenforceable. The proposal does not specify a particular set
of requirements, including contamination thresholds. The proposal also restricts
“decomposition” of the hose. Decomposition of the hose should in all cases be
avoided; however, degradation of the hose will occur well before
“decomposition” and may itself lead to potential hazards that would be
manifested before decomposition. The requirements in the Standard for Safety
of LP-Gas Hose, ANSI/UL21, presently address degradation.
MCTIER, S.: This proposal will change the UL requirements for UL 21 LPGas hose and have a potential retroactive effect on most of the existing LP-Gas
hose. We need to act in a full industry basis to beat solve this problem.
MISEL, JR., G.: The approval of this proposal would disqualify existing hose
complying with UL 21, Standard for Safety for LP-Gas Hose, which states the
following in Section 3.1: “The tube or inner lining of a hose shall be made
from synthetic rubber of the oil-resistant type.” There are currently no testing
requirements in UL 21 that can determine the ability of hose material to resist
leaching or other detrimental effects. Instead of changing NFPA 58, these
issues need to be addressed in UL 21.
SWIECICKI, B.: The approval of this proposal would disqualify existing
hose complying with UL 21, Standard for Safety for LP-Gas Hose, which
states the following in Section 3.1: “The tube or inner lining of a hose shall be
made from synthetic rubber of the oil-resistant type.” There are currently no
testing requirements in UL 21 that can determine the ability of hose material to
resist leaching or other detrimental effects. Instead of changing NFPA 58, these
issues need to be addressed in UL 21.
________________________________________________________________
(5.4.6.6)
________________________________________________________________
NOTE: This proposal appeared as Comment 58-69 (Log #79) which was
held from the November 2003 ROC on Proposal 58-1.
Submitter: Samuel E. McTier, McTier Supply Co. / Rep. NPGA
Recommendation: Delete the following paragraph.
5.4.6.6 Hose at a pressure of 5 psig (34 kPag) or less used in agricultural
buildings not normally occupied by the public shall be exempt from the
requirements of 5.4.6.4 .
Substantiation: This paragraph should be deleted as the exemption indicates
that there are no requirements for hose used for purposes shown. Paragraph
5.4.6.5 just above 5.4.6.6 covers the requirements for hose at a pressure of 5
psig or less in agricultural buildings not normally occupied by the public.
Committee Statement: The paragraph is not in the 2004 edition.
________________________________________________________________
(Table 5.5.5.1)
________________________________________________________________
Recommendation: Revise Table 5.7.7.1 Row I, Column 5, to read R (>125
gal).
Substantiation: To exclude larger cylinders from the float gauge requirement.
CZISCHKE, R.: The proposal says float gauges are required on containers
greater than 125 gallons but the substantiation says to exclude containers
greater than 125 gallons from the requirement. This does not make sense.
MCTIER, S.: There is no record of this proposal shown in the Report for
Documents and I have no memory of any discussion on this subject. There is
no Table 5.5.5.1 in NFPA 58 but the text indicates that it addresses Table
5.7.7.1
FREDENBURG, R.: Some kind of error was made here, but I’m not sure
what. Column 5 is for ASME containers, but the proposal is to exclude large
cylinders from the float gauge requirement. This is inconsistent in a number of
ways and needs further work.
________________________________________________________________
(Editorial Changes)
________________________________________________________________
Recommendation: Make the following changes to Section 5.7:
5.7 Container Appurtenances and Regulators
5.7.1.1 Container appurtenances and regulators shall be fabricated of materials
that are compatible with LP-Gas and shall be resistant to the action of LP-Gas
under service conditions . The following materials shall not be used :
(1) Gray cast iron shall not be used.
(2) Nonmetallic materials shall not be used for bonnets or bodies of valves or
58-
NFPA 58
regulators.
5.7.3.4 Automatic changeover regulators shall be exempt from t his
requiremen t the requirement in 5.7.3.3 .
Table 5.7.6.2 Add the following sentence to the end of the “Note” at the
bottom of the Table and insert “ Propane” in front of “Cylinder Size” in the
first column : “If the dip tube length that is marked on the cylinder does not
appear in Table 5.7.6.2, use the next longer dip tube length shown in the table.”
5.7.7.1 In two locations insert “water capacity” after “4000 gal”.
5.8.5 (E)(3) In the last line change the references from “6.8.4.1 through
6.8.4.5” to “ 6.8.4.3 and 6.8.4.4 ”.
5.18.7(D) In the last line the reference should be “6.21.7.5” instead of
“6.21.7” .
6.3.3 The 25 ft (7.6 m) minimum distance from aboveground ASME
containers of 501 gal to through 2000 gal water capacity…(remainder
unchanged)
6.3.5 In the first line insert “ minimum ” before “separation”. In the second
line delete the “of” before “buildings” to improve grammar.
6.3.12 (5) In second line change “2001 to through 30,000 gal”
6.4.5.7 In the first line substitute reference “6.4.5.5” for reference “6.4.5.6”.
Then, switch the order of 6.4.5.6 and 6.4.5.7 as they currently appear in the
Code.
6.6.6.1(C) In the second line change “tank” to “ container ”.
6.6.6.1(D) Delete this paragraph because it is redundant to 6.6.6.1(B) and
(C).
6.7.2.11 In the last line substitute “5.7.11.4” for “5.7.11.1(H).”
6.7.2.15(1) Piping from aboveground containers shall be sized to provide the
rate of flow specified in 5.7.2.5. Piping from underground containers shall be
sized to provide the rate of flow specified in 5.7.2.7.
6.7.4.7 In the second and third lines of this paragraph, delete “and 6.7.4.8(3)”
and substitute “through 6.7.4.8(4 ) 6.7.4.8(7)” as all of these paragraphs pertain
to the second stage regulator relief valve vent line.
6.7.4.8(4) In the second line substitute “5.7.5” for “5.8.3 or Section 5.11”.
6.8.7.2 In the last line change “tanks” to “ containers ”
6.10.10(3) In the last line substitute “6.9.4 and 6.9.5 ” for “6.9.3”.
6.15.3.5 In the second line substitute “6.15.3.4” for “6.15.5.3”.
6.16.5.1 In the fourth line substitute “Section 4.4” for “Section 1.5.”
6.16.5.2 Break out (C) and (D) into a separate section as follows because
they are not related to the requirement of 6.16.5.2. Then, re-letter (E) and
delete 6.16.5.3, which is the same as (E).
6.16.5.3 Where guard service is provided, it shall be extended to the LP-Gas
installation and the requirements of Section 4.4 shall apply to guard personnel.
6.17.4.4 Add “ See 6.17.4.5 for an exception to this requirement ”.
6.17.9 Change title as follows:
“ Use in Buildings for Demonstrations or Training, and Use of Small
Cylinders for Self-Contained Torch Assemblies and Food Service
Appliances .”
6.17.10 To meet the requirements of the 2003 Edition of the NFPA Manual of
Style (MOS), paragraphs (A) through (E) should be changed to 6.17.10.1
through 6.17.10.5 and A.6.17.10(C) should be changed to A.6.17.10.3 in the
Annex .
6.17.11.2 In the second line include “ LP-Gas capacity” within the bracket.
6.21.7 Change title to “ Appliance Installation on Vehicles” instead of just
“Appliance Installation” as that is what the subsection covers.
6.23.3.5 In the fourth line insert a comma after “actuation” and remove the
comma after “protection”.
6.24.3.5 In the second line substitute “6.24.3.1 through 6.24.3.4” for
“6.24.3.1 and 6.24.3.4”.
7.2.1.3 In the first line change “precaution” to “caution”.
7.2.2.1 Transfer of LP-Gas to and from a container shall be accomplished only
by qualified persons individuals trained in proper handling and operating
procedures meeting the requirements of Section 4.4 and in emergency response
procedures.
7.2.3.2(D) Materials that have been heated above the ignition temperature of
LP-Gas shall be cooled before that LP-Gas transfer is started.
7.3.2.2 In the first line change “cylinder” to “ cylinders ”.
8.3.1 Insert the title “General’ for this subsection.
9.3.4 In the fifth line delete the word “heel” and substitute “liquid”.
9.4.2.2 In the first line substitute “Section 5.2” for “ Section 5.7” and in the
second line substitute “Section 5.7” for “Section 5.3”.
11.6.3.5 In the fifth line substitute “(2.4 MPag)” for “(24 MPag)”.
14.2.2.2(4) In the first line substitute “5.7.6.6” for “5.7.6.5”.
Substantiation: These are either editorial changes or errata that will improve
the readability and accuracy of the document.
Committee Statement: Accept, and note that the revisions made in 58-47
(Log #127) and 58-81 (Log #128) modify and override some of the items in
this proposal.
________________________________________________________________
(5.7.1)
________________________________________________________________
Recommendation: Make the following modifications to NFPA 58.
5.7.1.3 Container appurtenances installed on a container with a MAWP of 250
psig shall have a service pressure rating MAWP of at least 250 psig (1.7 MPa).
5.7.1.4 Container appurtenances installed on containers with a MAWP of 312
psig shall have a MAWP of either:
(1.) 312 psig or higher.
(2.) 250 psig, listed and tested to 5 times MAWP.
5.7.1.5 Container appurtenances installed on containers with a MAWP
exceeding 312 psig shall have a MAWP of at least the container MAWP.
Substantiation: Valves and appurtenances listed to UL125 “Valves for
Anhydrous Ammonia and LP Gas (other than Safety Relief)” with a MAWP of
250 psig have been hydrostatically tested at 5 times the MAWP (1250 psig).
The 312 psig container design margin is 3.5 times the MAWP (1092 psig). The
hydrostatic test pressure for the valves and appurtenances is 158 psi greater
than the design margin of the container. Valves and appurtenances with 250
psig MAWP have been successfully used in 312 psig ASME container service
for at least two decades.
________________________________________________________________
(5.7.2.3 (New) )
________________________________________________________________
Recommendation: Insert new text:
5.7.2.3 Composite cylinders shall not be equipped with fusible plugs.
The addition of 5.7.2.3 will mandate that fusible plugs, which when
activated result in the complete emptying of the cylinder, from being used with
composite cylinders. This is a safety provision that is considered essential for
using cylinders inside a building.
outages.
O’NEIL, V.: My vote to agree with the committee action in this matter should
not be construed as an agreement or approval of the use of composite cylinders
indoors.
________________________________________________________________
(5.7.2.5)
________________________________________________________________
Recommendation: Modify the equation in this section as follows:
Flow rate (ft3/min air) F = 53.632 x A0.82
Where:
58-10
NFPA 58
A = total outside surface area of container in square feet ft2
F = flow rate in SCFM air
Substantiation: It is noticed that the ft3/min air in the formula is not defined.
For a gas flow if the ft3 has to be defined with gas temperature and pressure;
otherwise it is meaningless. Also, the formula format is made consistent with
those appearing in Chapter 12 for the same pressure relief capacity. Finally, the
definition of SCFM has been included in Chapter 3 (See proposal Log #40).
Revised text with rationale as noted below:
These proposals are original materials
Editorial note: For proposal on 5.7.3 the paragraphs must be renumbered
because several of the existing paragraphs are being deleted.
5.7.3 Regulators.
5.7.3.1 Pressure regulators are used in fixed LP-Gas piping systems in
buildings, structures, on vehicles, other than for engine fuel use, and as part
of a free standing or portable appliance. to provide for pressure control and
capacity of the fuel supply. Regulators shall comply with ANSI/UL144,
Standard for LP-Gas Regulators . ( see 6.7.4.4 for required protection from the
elements)
________________________________________________________________
(Table 5.7.2.5)
________________________________________________________________
Recommendation: Modify the title of and column headings in the table as
follows and include the footnote as indicated.
Table 5.7.2.5 Pressure Relief valve Flow Capacity as a Function of Container Surface Area*
Surface Area
(ft2)
Flow Rate
(ft3/min air SCFM)
Surface Area
(ft2)
Flow Rate
(ft3/min air SCFM)
Surface Area
(ft2)
Flow Rate
( ft3/min air SCFM)
Add footnote; * Flow rate in SCFM air
Substantiation: The flow rate is not properly defined in the Table. This is
rectified by specifying it as in SCFM and the term SCFM has been defined in
Chapter 3 (see proposal Log #40).
Committee Statement: See 58-12 (Log #40).
________________________________________________________________
(5.7.2.5, 5.7.2.12)
________________________________________________________________
Recommendation: 1. Revise 5.7.2.5 to read:
5.7.2.5 The minimum rate of discharge of pressure relief valves installed
in ASME containers shall be in accordance with Table 5.7.2.5 or shall be
calculated using the following formula: (formula unchanged)
2. Revise 5.7.2.12
5.7.2.12 Where used on aboveground ASME containers of 1200 gal (4.5 m3) or
less in addition to spring-loaded pressure relief valves, fusible plugs shall be in
accordance with the following: (remainder unchanged)
Substantiation: The paragraphs are revised to clarify that it applies only to
pressure relief valves installed in ASME containers.
MCTIER, S.: Insert “water capacity” after “1200 gal (4.5 m3)”
________________________________________________________________
(5.7.2.8(2))
________________________________________________________________
Recommendation: Modify as indicated below:
(2) Rated relieving capacity in cubic feet per minute of air at 60°F (16°C)
and 14.7 psia (101 kPa) SCFM air .
Substantiation: The justification for this change is obvious. There is no
reason to repeat the conditions or the definiton of SCFM when it is provided in
definitions Chapter 3 (see proposal Log #40).
Committee Statement: See 58-12 (Log #40).
________________________________________________________________
(5.7.3)
________________________________________________________________
Submitter: Ronald R. Czischke, Underwriters Laboratories Inc
Recommendation: Section 5.7.3, Paragraphs 5.7.6.1 and 5.7.7.1, Tables
5.7.7.1, 5.7.7.3
Single-stage regulators shall have a maximum outlet pressure setting of 1.0
psig (7 kPag) and shall be equipped with one of the following [see 6.7.4.4 for
required protection from the elements] :
(1) An integral pressure relief valve on the outlet pressure side having a startto-discharge pressure setting within the limits specified in UL 144, Standard
for LP-Gas Regulators .
(2) An integral overpressure shutoff device that shuts off the flow of LP-Gas
vapor when the outlet pressure of the regulator reaches the overpressure limits
specified in UL144, Standard for LP-Gas Regulators . Such a device shall not
open to permit flow of gas until it has been manually reset.
5.7.3.2 Second-stage regulators and integral two-stage regulators shall have
a maximum outlet pressure setting of 14 in. w.c. (4.0 kPag) and shall be
equipped with one of the following (see 6.7.4.4 for required protection from the
elements) :
(1) An integral pressure relief valve on the outlet pressure side having a startto-discharge pressure setting within the limits specified in UL144, Standard
for LP-Gas Regulators . This relief device shall limit the outlet pressure of the
second-stage regulator to 2.0 psig (14 kPag) when the regulator seat disc is
removed and the inlet pressure to the regulator is 10.0 psig (69 kPag) or less as
specified in UL 144.
specified in UL144, Standard for LP-Gas Regulators . Such a device shall not
(3) Regulators with a rated capacity of more than 500,000 Btu/hr (147
kW/hr) shall be permitted to have a separate overpressure protection device
complying with 5.9.2 of NFPA 54, National Fuel Gas Code (ANSI Z223.1).
The overpressure protection device shall limit the outlet pressure of the
regulator to 2.0 psig (14 kPag) when the regulator seat disc is removed and the
inlet pressure to the regulator is 10 psig (69 kPag) or less.
5.7.3.3 Integral two-stage regulators shall be provided with a means to
determine the outlet pressure of the high-pressure regulator portion of the
integral two-stage regulator.
5.7.3.4 Automatic changeover regulators shall be exempt from this
requirement.
5.7.3.5 Integral two-stage regulators shall not incorporate an integral pressure
relief valve in the high-pressure regulator portion of the unit.
5.7.3.6 First-stage regulators shall incorporate an integral pressure relief
valve having a start-to-discharge setting within the limits specified in UL 144,
Standard for LP-Gas Regulators .
5.7.3.7 First-stage regulators with a rated capacity of more than 500,000 Btu/hr
(147 kW/hr) shall permitted to have a separate pressure relief valve.
5.7.3.8 High-pressure regulators with a rated capacity of more than 500,000
Btu/hr (147 kW/hr) where permitted to be used in two-stage systems shall
incorporate an integral pressure relief valve or shall have a separate relief
valve.
5.7.3.9 First-stage regulators shall have an outlet pressure setting up to 10.0
psig (69 kPag) in accordance with UL 144, Standard for LP-Gas Regulators .
5.7.3.10 Regulators shall be designed so as to drain all condensate from the
regulator spring case when the vent is directed down vertically.
5.7.3.11 Two-psi service regulators shall be equipped with one of the
following:
(1) An integral pressure relief valve on the outlet pressure side having a startto-discharge pressure setting within the limits specified in UL144, Standard
for LP-Gas Regulators . This relief device shall limit the outlet pressure of the
2 psi (14 kPa) service regulator to 5.0 psi (34.5 kPa) when the regulator seat
disc is removed and inlet pressure to the regulator is 10.0 psi (69 kPa) or as
specified in UL 144.
58-11
NFPA 58
specified in UL 144, Standard for LP-Gas Regulators . Such a device shall not
Substantiation: Rationale: By specifying that regulators comply with the
entire standard, ANSI/UL144 will ensure regulators meet all of the construction
and performance requirements contained therein and will not require review
of test reports to determine how the operational limits for relief capacity and
outlet pressure setting were achieved. It will make the code more efficient and
easier to apply.
Committee Statement: The requirements are needed by installers.
CZISCHKE, R.: This proposal was to reference the requirements of the
applicable ANSI product standard – the Standard for Safety of LP-Gas
Regulators, ANSI/UL 144 - rather than a partial tabulation of particular
performance requirements for regulators. Reference to the applicable ANSI
product standards for LP-gas regulators eliminates the need for redundant
product level requirements in the code and refers to the appropriate
comprehensive product requirements. This makes the code more concise
and complete, and promotes effective practical enforcement. UL believes
the rationale for rejecting this proposal - that the requirements are needed
by installers - is not accurate. Installers of regulators do not need detailed
product level requirements in the code, and in fact face a more difficult task
in practically establishing compliance with these code requirements than in
verifying compliance with the ANSI standard for regulators.
________________________________________________________________
(5.7.3 thorugh 5.7.5)
________________________________________________________________
Consumer Services
Recommendation: Remove sections 5.7.3 through 5.7.5 from Section 5.7 and
put them in a new Section 5.8 with a heading of “Regulators.” Text to remain
unchanged.
Substantiation: Section 5.7 is for container appurtenances. Sections 5.7.3
through 5.7.5 are for regulators, and these are not container appurtenances.
They are beyond the pressure boundary of the container and do not fall under
the definition of container appurtenances.
MCTIER, S.: 58-47 I have now made a new match of 5.8 through 5.17 with
6.8 through 6.17. This will be sent in at a later date.
________________________________________________________________
(5.7.6.1)
________________________________________________________________
Submitter: Ronald R. Czischke, Underwriters Laboratories Inc / Rep. Paul
Compton
5.7.6.1 Cylinders with 4 lb (1.8 kg) through 40 lb (18 kg) propane capacity
for vapor service shall be equipped or fitted with a listed overfilling prevention
device that complies with UL2227, Overfilling Prevention Devices , and a
fixed maximum liquid level gauge. These devices shall be permitted to be a
part of the container valve assembly.
Substantiation: Rationale: By specifying the standard for OPDs it clearly
identifies the set of requirements that such a device must meet.
________________________________________________________________
(Table 5.7.6.2)
________________________________________________________________
Recommendation: Modify Table 5.7.6.2 as follows:
Table 5.7.6.2 After “11.5#” in the Cylinder Size column, add 18# and 19#
rows with “Composite” under the “material” column and the rest of the
cylinder I.D., cylinder water capacity, and dip tube length information to be
provided by the cylinder manufacturer at the meeting of the technical
committee.
Substantiation: The change to 5.7.6.2 will incorporate appropriate dip tube
lengths for composite cylinders, which are necessary to ensure the safe filling
of cylinders when using the volumetric method.
outages.
evolution of the “refilling” market. These facts warrant a serious consideration
Committee Statement: The proposal is incomplete.
________________________________________________________________
(Table 5.7.6.2)
________________________________________________________________
Recommendation: Revise Table 5.7.6.2, Column 1 by changing column
heading to “Propane Cylinder Size”.
Substantiation: The column heading is clarified.
________________________________________________________________
(5.7.6.4, 5.7.6.5, A.5.7.6.5, 5.18.8)
________________________________________________________________
Recommendation: Modify text as follows:
5.7.6.4 Steel or aluminum cylinders that are required to have an overfilling
prevention device installed shall be equipped with either a CGA connection
number 791 or a CGA connection number 810 as described in CGA V-1,
Standard Compressed Gas Cylinder Valve Outlet and Inlet Connections .
5.7.6.5 * Composite cylinders that are required to have an overfilling
prevention device installed shall be equipped with a listed male connection that
is included in CGA V-1, that is compatible with the CGA 791 female
connector, is compatible with the ANSI Z21.11.2 female connector designed
for cabinet heater use, and is not compatible with a CGA 510 male connector.
A.5.7.6.5 The ANSI Z21.11.2 female connector designed for cabinet heater
use will be compatible with the ANSI Z21.11.2 listed male cylinder valve
connection that is also designed for cabinet heater use, but it will not attach to
the standard male CGA connection number 791.
5.18.8 Cabinet heaters shall be listed.
(A) Cabinet heaters shall be supplied with LP-Gas from only a composite
cylinder.
(B) Cabinet heaters shall comply with the requirements of ANSI Z21.11.2.
(C) Composite cylinders that are used with cabinet heaters shall have a
maximum capacity of 53 lb water capacity (24 kg) [nominal 20 lb (9.1 kg)
propane capacity].
(D) The composite cylinder shall be located in a separate
compartment from the heating element.
(E) Cabinet heaters shall use only an integral two-stage regulator with an
integral overpressure shutoff device complying with UL 144. An integral twostage regulator equipped with an integral pressure relief valve shall not be
used.
1. The changes proposed to 5.7.6.4 and 5.7.6.5 are introducing a new cylinder
connection device that will permit only specific cylinders to be used with
cabinet heaters. The connection will not permit a generic cylinder to be brought
into the building and connected to a cabinet heater. Note, however, that the
58-12
NFPA 58
connection device will permit the special cylinders used with cabinet heaters to
also be used with other common appliances, such as grills.
2. Proposed Section 5.18.8 describes compliance with specific technical
requirements for cabinet heaters. The reference to ANSI Z21.11.2 is appropriate
because that is the nationally recognized and enforced standard for unvented
heaters. The other provisions are all related to the safe performance of the
cabinet heater and restricting the amount of LPG that can be brought into the
building.
outages.
Accept the proposal and add a new 5.18.8.1 to read:
5.18.8.1 Modification of the CGA connection or the use of an adapter that
allows alternate fuel source or cylinder to supply the cabinet heater shall be
prohibited.
Committee Statement: The proposal is accepted and an additional safety
requirement is added.
CZISCHKE, R.: See My Explanation of Negative on 58-6 (Log 107).
KING, J.: A change in the Code permitting the use of portable, unvented
cabinet heaters in residential occupancies is not in the best interest of consumer
safety for various reasons, not the least of which is the potential for fires and
explosion resulting from ignition of leaking gas. There is also currently no
standard for such an appliance that requires an interface between the gas
shutoff and a combustible gas detector, oxygen depletion sensor, and carbon
monoxide sensor. Therefore specifications for this type of appliance and
cylinder valves are unneeded.
cylinders to be used inside of buildings, with cabinet heaters, which is an
increase of 10 times the currently allowed limit. This proposal is not in the best
interest of safety
MAXON, R.: The Compressed Gas Association has not had sufficient time to
review this proposal. The CGA cannot support a proposal for which the safety
standards are yet to be written. The CGA expects to have comments for the
ROC meeting.
MCTIER, S.: Change 5.18.8.1 to 5.18.9 to comply with the NFPA Manual of
Style.
indoors.
________________________________________________________________
(5.7.6.5)
________________________________________________________________
Submitter: Caroline Guay, Dixie LP Gas Inc.
Recommendation: Revise the following text:
(1)... and used for industrial welding and cutting gases...
Substantiation: How do we recognize these containers? No clear description
is given. Could we get a picture or more definitive language?
Committee Statement: A specific proposal is not made.
________________________________________________________________
(5.7.7)
________________________________________________________________
Submitter: Ronald R. Czischke, Underwriters Laboratories Inc
5.7.7 Container Valves Connections and Other Appurtenances.
5.7.7.1 Containers of 2000 gal (7.6 m3) water capacity or less shall be fitted
with valves and other appurtenances in accordance comply with Table 5.7.7.1.
Shutoff, filler, check and excess flow valves shall comply with ANSI/UL125,
Standard for Valves for Anhydrous Ammonia and LP-Gas (Other than Safety
Relief), except that shutoff valves used on DOT cylinders shall comply with
UL1769, Cylinder Valves . Containers of 2001 gal through 4000 gal in bulk
plant and industrial plant service shall be fitted with valves and other
appurtenances in accordance with Table 5.7.7.3. Containers of 2001 gal through
4000 gal in other than bulk plant and industrial plant service shall be in
accordance with Table 5.7.7.1.
Table 5.7.7.1 Container Valves Connection and Other Appurtenance
Requirements for Containers Used in Other than Bulk Plants and
Industrial Plants
Table 5.7.7.3 Valves Connection and Other Appurtenance Requirements
for New and Existing Container Installations in Bulk Plants and Industrial
Plants
Substantiation: Rationale: The requirements discuss valves and gauging
devices and not just “connections”. By specifying the standards for valves it
clearly identifies the set of requirements that such equipment must meet.
Accept and add “water capacity” after “gallons” where it is not shown in the
proposal.
Committee Statement: Accepted with editorial revisions.
MCTIER, S.: Insert “water capacity” in the fourth line and the sixth line of
5.7.7.1 after “4000 gal”.
________________________________________________________________
(Table 5.7.7.1)
________________________________________________________________
Recommendation: Modify Table 5.7.7.1 as shown below.
See Table 5.7.7.1 on the next page
Substantiation: There is no need to indicate what hardware is optional.
Anything that is not required can be considered optional.
Accept, and also make the revisions in 58-55 (Log #CP9) and 58-38 (Log
#CP10).
________________________________________________________________
(Table 5.7.7.1)
________________________________________________________________
Recommendation: Revise Part F of Table 5.7.7.1, columns 1, 2, and 3 to read:
R (see 5.7.71 (H)):
Add an new 5.7.7.1 (H) to read:
(H) Cylinders greater than 40 lb through 100 lb propane capacity shall not be
required to have a fixed maximum liquid level gauge.
Substantiation: To add a new paragraph to correct an error, and to reference it
in Table 5.7.7.1.
CZISCHKE, R.: The proposal is not clear. I believe the intent was to exclude
100-lb and above LP-Gas containers from the requirement and not 40 through
100 lbs.
MCTIER, S.: The full NFPA committee for the 2004 Edition of NFPA 58
specifically addressed the requirements for equipping fixed maximum liquid
level gauges on cylinders and their concern was whether the requirements
should continue to include cylinders from over 40-lb through 100-lb. propane
58-13
NFPA 58
Table 5.7.7.1 Container Connection and Appurtenance Requirements for Containers Used in Other than Bulk Plants and Industrial
Plants
Part
Appurtenances
1
2
3
4
5
6
Cylinders 2-lb Cylinders 2-lb
Cylinders 2-lb
Cylinders 100Stationary ASME
DOT and ASME
through 100to through
through 100lb through 420
Containers
Engine Fuel or
lb Propane
100-lb Propane
lb Propane
-lb Propane
Through through
Mobile Containers
Capacity for
Capacity for
Capacity for
Capacity Filled
4000-gal W. C.
Vapor Service
Liquid Service
Liquid &
on Site
Vapor Service
A
Manual shutoff valve with
R (see 5.7.6.4)
an integral external pres[see
sure relief valve
_
_
_
_
_
5.7.7.1(G)]
B
C
D
E
G
External pressure relief
valve (see 5.7.2)
Internal spring-type pressure relief
valve (see 5.7.2)
Float gauge
J
K
L
M
N
Backflow check and
excess-flow vapor return
valve
Actuated liquid withdrawal
excess-flow valve [see
5.7.7.1 through 5.7.7.1(D)]
Manual shutoff liquid or
vapor valve with internal
excess-flow check valve
Full internal or flush-type
full internal pressure relief
valve
Overfilling prevention
device
_
_
_
_
_
_
_
R√
(see 5.7.2.2)
_
Double backflow check
filler valve
Manual shutoff valve
for vapor service [see
5.7.7.1(F) and 6.17.2.1(5)]
Fixed maximum liquid
level gauge
I
_
(CGA 555 outlet) with
excess-flow valve for liquid service attached to the
internal liquid line inside
the cylinder; manual shutoff valve (CGA 510 outlet)
with integral external pressure relief valve for vapor
service
F
H
R√
(see 5.7.2.2)
(CGA 555 outlet) with
integral external pressure
relief valve and excessflow valve attached to the
internal liquid line inside
the cylinder
_
_
O√
_
R√
_
_
_
R√
R√
R√
R√
R√
O-DOT
R-ASME
_
_
R√
R√
R√
R
R√
O√
_
_
_
_
_
_
_
O√
_
O√
_
_
O
_
_
R [see
5.7.7.1(A)]
R√
_
_
O
_
O√
_
_
_
_
_
_
R
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
R√ (4-lb to
through 40-lb
only) [see
5.7.7.1(G)]
58-14
R
_
R
R
[see 5.7.7.1(E)]
NFPA 58
capacity. The NFPA committee voted to continue to include cylinders over 40lb through 100-lb. This was re-visited by the committee because prior to the
1998 Edition of NFPA 58, cylinders in these sizes were not required to be
equipped with fixed maximum liquid level gauges as cylinders are permitted to
be filled either by weight or by the volumetric method that requires the level
gauge. Continuing to include 40-lb through 100-lb in this requirement was
considered as a safety issue by the committee. Although a fixed maximum
liquid level gauge is not necessary when filling a cylinder by weight, all other
cylinders require the gauge so that the alternate volumetric method of filling
the cylinder may be used when scales are not available. The substantiation for
making this change is shown as “to correct an error” and based on the above
previous action of the committee this is not a valid reason.
MAXON, R.: There is no need to require a fixed maximum fixed level gage
on cylinders up to and including 100 # LP capacity. Additionally, some states
require that cylinders of this size be filled by weight. Allowing the addition of
a fixed level gage creates an additional leak source. Some Industrial Gas
Companies require that these cylinders be only filled by weight.
An additional error in CP9 appears to be a note stating that float gages are not
required on Stationary ASME containers up to 150 gallon water capacity.
________________________________________________________________
(Table 5.7.7.3)
________________________________________________________________
Recommendation: Implement the following error correction for the notes
under Table 5.7.7.3:
Option C: Internal valve installed in the container or an excess flow valve in
accordance with 5.7.7.2 (1) B
Option E: -------in accordance with 5.7.7.2 (1) B
Substantiation: Correcting an erroneous and non existent reference.
Committee Statement: The current text is correct.
________________________________________________________________
(5.7.10)
________________________________________________________________
5.7.10 Other Container Connections
Suggested Revision of 5.7.10.1, 5.7.10.2, and 5.7.11.1
5.7.10.1 “ Other container openings shall be equipped with one any of the
following:
(1) A positive shutoff valve in combination with either an excess-flow check
valve or a backflow check valve plugged .
(2) An internal valve plugged .
(3) A backflow check valve plugged .
(remainder unchanged)
5.7.10.2 Pressure relief valves in accordance with 5.7.2, connections for flow
controls in accordance with 5.7.7,-shall be exempt from the requirements of
5.7.11.1.
5.7.10.2 Any of the valves listed in 5.7.10.1 (1), (2), or (3) that are not
connected for service shall be plugged or capped.
5.7.11 Container Appurtenance Installation Protection .
Substantiation: These suggested changes that delete “plugged” in 5.7.10.1(1),
(2), and (3), and add a new paragraph 5.7.10.2 that covers the use of a plug or
cap when the valves are not connected for service, clarifies these requirements.
Everything that is covered in current 5.7.10.2 is already covered in 5.7.11.1
except “connections for flow controls”.
________________________________________________________________
(5.8.3.1, 5.8.3.2)
________________________________________________________________
Recommendation: Revise 5.8.3.1 and 5.8.3.2 to read:
5.8.3.1 Pipe. Pipe shall be wrought iron or steel (black or galvanized), brass,
copper, polyamide, or polyethylene and shall comply with the following: (list
unchanged)
5.8.3.2 Tubing. Tubing shall be steel, stainless steel, brass, copper, polyamide,
or polyethylene (see 6.8.4) and shall comply with the following: (list
unchanged)
Substantiation: Revised to conform to the Manual of Style
________________________________________________________________
(5.8.6.2)
________________________________________________________________
5.8.6.2 If When wire braid is used for reinforcement, it shall be of corrosionresistant material such as stainless steel.
Modify NFPA 58 as follows:
5.2.3.1(c)(3) The cylinder is painted or coated to retard minimize corrosion.
Substantiation: This is editorial to comply with the manual of style
recommended by NFPA.
The change to 5.2.3.1(c)(3) and to 11.3.7 from the word “retard” to the word
“minimize” clarifies that the paint is intended to prevent excessive corrosion
rather than just slow it and also standardizes the verbiage in this paragraph to
be the same as 13 other existing paragraphs which use the same phrase to
clarify the purpose for paint and/or coatings addressed in the respective
paragraphs.
________________________________________________________________
(5.15.1.3)
________________________________________________________________
Add new text to NFPA 58 as follows and renumber subsequent text:
5.15.1.3
(E) Aluminum shall be permitted to be used for indirect vaporizers.
Substantiation: Manufacturers have been utilizing aluminum in the
construction of indirect vaporizers for over 25 years with a proven safety
record. This proposal reflects current industry practice.
Revise 5.15.1.3 to read:
(C) Aluminum, for cylinders, gaskets, regulators, approved meters, and
indirect electric vaporizers only.
(D) Zinc for approved regulators only, complying with ASTM B 86, Standard
Specification for Zinc-Alloy Die Casting.
Committee Statement: Accepted with an editorial revision.
MCTIER, S.: In 5.15.1.3(C) remove the comma after ”Aluminum” as it is not
needed.
________________________________________________________________
58-61 Log #59b Final Action: Accept
(5.15.5.3)
________________________________________________________________
Recommendation: Add the following text:
5.15.5.3 Liquid meters shall be installed so that the meter housing is not
subject to excessive strains from the connecting piping. If not provided in the
piping design, flexible connectors that do not exceed 36 in. (1 m) in overall
length shall be permitted to be used
58-15
NFPA 58
________________________________________________________________
(6.21 Table 6.21.3.1)
________________________________________________________________
Submitter: Ravjibhai Parmar, Chandler Mfg., Inc.
Oil Heating Vehicles (Hot Oil Unit) should be listed separately in the Table
6.21.3.1 with reasonable fuel container capacity.
Substantiation: We are producing oil field equipments including “Hot Oil
Unit” used in the process of drilling the oil wells. My most of the customers
are oil producers. Oil producing business is suffering from not having enough
fuel for the operation of the drilling wells. 300 gallons fuel do not last even 3
hours. Drilling oil wells is continuous process, oil producers need reasonable
access to road.
Committee Statement: The Committee is sympathetic with the concern stated,
however a specific proposal with a revised propane capacity is not submitted.
________________________________________________________________
58-63 Log #116b Final Action: Reject
(6.2.3)
________________________________________________________________
6.2.3 Fire Response using both portable and fixed Liquid Nitrogen fire control
equipment gives immediate burn stoppage, means to freeze and collect
unburned spillage, and freeze sealing of pipes ruptured or found open until
capping or repair can be made immediately and at the scene.
and valves.
________________________________________________________________
(Table 6.3.1)
________________________________________________________________
Submitter: William J. Young, Superior Energy Systems, Ltd.
Table 6.3.1 Separation Between Containers, Important Buildings and Other
Properties Line of Adjoining Property that can be built upon
Substantiation: This change makes the table description match the wording in
6.3.1.
________________________________________________________________
(6.3.4.1)
________________________________________________________________
Submitter: Bill Mahre, Propane Technical Services
Recommendation: Revise text to read:
6.3.4.1 Distances for all underground and mounded ASME containers shall be
measured from the pressure relief valve and the filling connection container
surface .
Substantiation: This modification will clarify how measurements for storage
tank separation are structured. 6.3.4.1 is confusing, if used with both 6.3.4.2
and 6.3.4.3. The NFPA 58 Code should be consistent throughout the document.
This wording is consistent with 6.24.2.2.
Committee Statement: The paragraph applies only when the alternate spacing
requirements of Section 6.24 are used.
MAHRE, B.: This proposal was intended to correct the wording and intent of
paragraphs 6.3.4.1; 6.3.4.2 and 6.3.4.3.
Under present 6.3.4.1 an installer or AHJ can not measure from the relief
valve and filling connection, as in many ASME storage containers these
appurtenances are in separate locations on the container surfaces. The filling
connection may be remote from the container.
The present 6.3.4.1 conflicts with 6.3.4.2 and 6.3.4.3
The present 6.3.4.2 and 6.3.4.3 in fact state that the distance is measured from
the container surface.
The proposed editorial changes to this section are as follows:
6.3.4 (No changes in this paragraph)
6.3.4.1 Distances for all underground and mounded ASME containers
shall be measured from the pressure relief valve and the filling connection.
Distances for all underground and mounded ASME containers shall be
measured from the container surface.
NOTE: This wording is contained in 6.24.2.2
6.3.4.2 No part of an underground or mounded ASME container shall be
less
than 10 ft (3 m) from a building or line of adjoining property that can be
built upon.
6.3.4.3 No part of a mounded ASME container that is installed above
grade
shall be less than 5 ft (1.5 m) from a building or line of adjoining
property can be built upon.
NOTE: Delete this paragraph
6.24.2.3 No part of an underground ASME container shall be less than 10
ft
(3 m) from a building or line of adjoining property that can be built
upon, and no part of a mounded ASME container that is installed
above grade shall be less than 5 ft (1.5 m) from a building or line of
adjoining property that can be built upon.
NOTE: Delete this paragraph
MCTIER, S.: Paragraph 6.3.4.1 should be deleted as all measurements should
be made from the container surface as is clearly indicated in 6.3.4.2 and
6.3.4.3. The substantiation is not correct as subsection 6.3.4 does apply to
aboveground and mounded ASME containers incorporating all of the
provisions of 6.24.
________________________________________________________________
(6.3.4.2)
________________________________________________________________
No part of an underground or mounded ASME container shall be less than 10
ft (3 m) from a building or line of adjoining property that can be built upon.
Substantiation: This modification will set one distance measurement standard
for ASME underground and mounded container installations which comply
with Section 6.24, Redundant Fail-Safe Product Control. See proposal to revise
6.3.4.1.
Committee Statement: This proposal would place the paragraph in conflict
with 6.3.4.3.
Ballot Results: Affirmative: 23 Abstain: 1
MCTIER, S.: The Committee must decide whether a mounded aboveground
container shall be permitted to be installed within 5 ft of a building or a line of
adjoining property that can be built upon. If the committee agrees, no changes
need to be made to either paragraph. If the committee disagrees and picks the
10 ft minimum distance, then paragraph 6.3.4.2 shown in 58-66 should be
accepted.
MAHRE, B.: This proposal edits the text to reflect changes made in 6.3.4.1.
________________________________________________________________
(6.3.4.2)
________________________________________________________________
Consumer Services
Recommendation: Add the following text to the end of the existing text:
If the ground surface between the building and the tank is impervious and
goes all the way to the building, the tank shall be no less than 10 ft from the
edge of the impervious surface.
Substantiation: Since part of the reason for having a separation distance for
UG tanks is to allow leaking gas to escape before entering the building, an
allowance must be made if the ground surface is impervious to gas. It cannot
58-16
NFPA 58
escape from the ground as easily and has a greater chance of entering the
building. On occasion we hear of leaks that traveled into the building when a
concrete patio is between the tank and the building and the patio goes all the
way to the building.
Committee Statement: The committee does not agree with the substantiation
provided.
MCTIER, S.: See My Explanation of Abstention on 58-66 (Log #11).
________________________________________________________________
(6.3.4.3)
________________________________________________________________
Recommendation: Delete the following text:
6.3.4.3 No part of a mounded ASME container that is installed above grade
shall be less than 5 ft (1.5 m) from a building or a line of adjoining property
that can be built upon.
Substantiation: This modification will set one distance measurement standard
for ASME underground and mounded container installations which comply
with Section 6.24, Redundant Fail-Safe Product Control. This paragraph is in
direct conflict with 6.3.4.1. See proposal to revise 6.3.4.1 and 6.3.4.2.
Committee Statement: The paragraph is needed.
MAHRE, B.: This proposal edits the text to reflect changes made in 6.3.4.1
________________________________________________________________
(6.3.8)
________________________________________________________________
6.3.8 Cylinder shall not be located and installed underneath inside any
building or enclosure unless the space is open to the atmosphere for 50 percent
of its perimeter or more.
Substantiation: This modification will clarify the intent of the requirement for
the location of cylinders. The addition of the wording “or enclosure” will also
clarify that the intent of the code is to prevent any accumulation of fugitive
gases escaping from the cylinder and migrating through openings.
Enclosures, such as tents, weather shelters and other structures which are not
normally considered buildings would be included.
Committee Statement: The use of cylinders is covered in Section 6.17. The
deletion of “underneath” is not substantiated.
MAHRE, B.: This proposal was intended to clarify the use of the term
building by adding the word enclosure. The present wording uses the term
underneath which could be used with the proposal as follows: “Cylinders
shall not be located or installed underneath or inside any building or enclosure
unless the space is open to the atmosphere for 50 percent of its perimeter or
more.”
________________________________________________________________
(6.4.1)
________________________________________________________________
Submitter: Steven E. Younis, Prospective Technology, Inc.
6.4.1 Where storage containers having an aggregate water capacity of more
than 4000 gal (15.1 m3) are located in heavily populated or congested areas,
the siting provisions of 6.3.1 and Table 6.3.1 shall be permitted to be modified
as indicated by the fire safety analysis incident preparedness review described
in 6.23.3.
Substantiation: NFPA 58 has referred to this type of site assessment as a
fire safety analysis since 1976. It has become an accepted and familiar term
throughout the propane industry. The previous change to incident prepared
review only serves to cause confusion and is a rarely utilized term. The
National Fire Protection Association and the National Propane Gas Association
through a grant from the National Propane Education Council have developed
and published the “Fire Safety Analysis Manual for LP-Gas Storage Facilities”
in order to provide a format and guidance for the performance of a fire safety
analysis in conjunction with the requirements of NFPA 58. Changing the
terminology back to fire safety analysis, as it has been for almost 30 years,
reinforces consistency of terminology within the industry, codes, and at the
state regulatory level, thus eliminating confusion and interpretational issues.
Committee Statement: This change has been made globally in 58-112 (Log
#115).
________________________________________________________________
(6.4.5.8, Table 6.4.5.8)
________________________________________________________________
Submitter: John J. Anicello, Airgas Inc
Recommendation: Delete Table 6.4.5.8 and modify paragraph 6.4.5.8 as
follows:
The minimum separation between LP-Gas containers and oxygen or gaseous
hydrogen containers shall be in accordance with Table 6.4.5.8 the provisions of
NFPA 55, Standard for the Storage, Use and Handling of Compressed Gases
and Cryogenic Fluids in Portable and Stationary Containers, Cylinders, and
Tanks.
Substantiation: Provisions for separating LPG and flammable and oxidizing
gases is already specified in NFPA 55. Accepting this proposal will bring
harmony to the user community and OSHA and fire prevention enforcement.
Committee Statement: This subject is within the scope of NFPA 58.
________________________________________________________________
(Table 6.5.3)
________________________________________________________________
Recommendation: Revise Note (f) to Table 6.5.3:
Note (f): NFPA 30, Flammable and Combustible Liquids Code, defines these
as follows: Flammable liquids include those having a flash point below 100°F
(37.8°C) and having a vapor pressure not exceeding 40 psia ( an absolute
pressure of 2068 mm Hg 276 kPa ) at 100°F (37.8°C). Class II combustible
liquids include those having a flash point at or above 100°F (37.8°C) and
below 140°F (60°C).
________________________________________________________________
58-73 Log #53 Final Action: Accept in Part
(6.6.3 (New) )
________________________________________________________________
Committee
Recommendation: Add a new section to read and renumber the remaining:
6.6.3 Portable LP-Gas-Fired Heaters. Portable LP-gas-fired heaters located
outdoors are allowed in accordance with Section 6.6.3.
6.6.3.1 Location.
6.6.3.1.1 Prohibited Locations. The storage or use of portable LP-gas-fired
heaters are prohibited on tabletops, inside buildings, inside tents, canopies or
membrane structures when connected directly to the fuel gas container,
6.6.3.1.2 Buildings. Portable LP-gas-fired heaters shall be located at least 5
feet from buildings.
6.6.3.1.3 Near Combustible Materials. Portable LP-gas-fired heaters shall not
be located beneath or within 5 feet of combustible overhangs, awnings,
sunshades or similar combustible decorations.
6.6.3.1.4 Proximity to Exits. Portable LP-gas-fired heaters shall not be located
within 5 feet of exits or exit discharges.
6.6.3.2 Portable Gas-Fired Heaters.
6.6.3.2.1 Listing and Approval . Only listed and approved heaters utilizing
an LP-gas container that is integral to the appliance shall be used.
6.6.3.2.2 Installation and Maintenance. Heaters shall be installed and
maintained in accordance with the manufacturer’s instructions.
6.6.3.2.3 Automatic Shutoff Device. Portable LP-gas-fired heaters shall be
equipped with an automatic device that will shut off the flow of LP-gas to the
main burner and the pilot in the event the flame is extinguished.
6.6.3.2.4 Tip-Over Switch. Heaters shall be equipped with a tilt or tip-over
58-17
NFPA 58
switch that automatically shuts off the flow of LP-gas if the appliance is tilted
more than 19 degrees from vertical.
6.6.3.2.5 Guard Against Contact. The heating element or combustion
chamber shall be permanently guarded so as to prevent accidental contact by
persons or material.
6.6.3.3 Gas Containers.
6.6.3.3.1 Approved Containers. Only approved U.S. DOT or ASME LP-gas
containers shall be used.
6.6.3.3.2 Refilling Containers. LP-gas containers shall not be refilled onsite.
6.6.3.3.3 Container Capacity. The maximum individual capacity of LP-gas
containers used in connection with portable LP-gas-fired heaters shall not
exceed 20 pounds.
6.6.3.3.4 Indoor Storage Prohibited . LP-gas containers shall not be stored
inside buildings.
6.6.3.3.5 Outdoor Storage . LP-gas containers shall be stored in accordance
with 8.4.
Substantiation: In many jurisdictions LP-gas fired heaters, commonly referred
to as “mushroom heaters” are being utilized in outdoor areas of restaurants and
sidewalk cafes in increasing numbers. These heaters are also readily available
to consumers at local home and building supply locations. Even though they
are being used in places frequented by the public, it seems unreasonable to
strictly prohibit the use of these heaters in outdoor areas when there is little
data to support such a prohibition. This proposal adds an allowance for the
conditional use of “mushroom” heaters and requirements for the storage and
use of such heaters in a new Section 6.6.3.
Committee Meeting Action: Accept in Part
Add a new section to read and renumber the remaining:
6.6.3 Portable LP-Gas-Fired Heaters.
6.6.3.1 Location.
6.6.3.1.3 Near Combustible Materials. Portable LP-gas-fired heaters shall
not be located beneath or within 5 feet of combustible overhangs, awnings,
sunshades or similar combustible decorations.
6.6.3.1.4 Proximity to Exits. Portable LP-gas-fired heaters shall not be located
within 5 feet of exits or exit discharges.
6.6.3.2.4 Tip-Over Switch. Heaters shall be equipped with a tilt or tip-over
switch that automatically shuts off the flow of LP-gas if the appliance is tilted
more than 19 degrees from vertical.
Committee Statement: The concept of a new section is accepted, and
minimum safety requirements have been included. The committee welcomes
comments on this subject.
CZISCHKE, R.: UL believes outdoor patio heater products should be listed
to ensure all features covering their use and operation have been fully
evaluated to the applicable product standard. Additionally, the technical
rationale for restricting tabletop use is not clear and in the absence of suitable
technical rationale we recommend eliminating restrictions on tabletop units.
MAHRE, B.: This proposal uses the terms ‘portable LP-Gas fires heaters’. To
clarify the type of heater the author is intending to cover, I suggest the use of
the term ‘ patio heaters ’.
The present NFPA 58-04 uses the term ‘portable heater’ in 6.17.2.7.
The present NFPA 58-04 uses the term ‘construction heater’ in 6.17.4 which
is portable, and could be confused with the proposal code additions.
The present NFPA 58-04 covers the use of hose on ‘portable appliances’ in
6.18.2.
MCTIER, S.: New proposed subsection 6.6.3 does not meet the requirements
of the NFPA Manual of Style or the style accepted by the NFPA 58 Committee.
In order to meet our requirements we must eliminate titles in subparagraphs
and eliminate 5 digit paragraph numbers. In addition, portable heaters are
addressed in 6.17.2.7 and probably should be a subsection of Section 6.17 and
all of the text could be added to a new 6.17.3. The rest of the subsections can
be renumbered. Following is a editorial rewrite of the accepted proposal.
“6.17.3 Portable Heaters
6.17.3.1 Portable heaters, including salamanders, shall comply with the
following:
(1) Portable heaters…”
(4) Portable heaters…”
(5) Portable heaters shall not be located beneath or within 5 ft of combustible
overhangs, awnings, sunshades, or similar combustible decorations.
(6) Portable heaters shall not be located within 5 ft of exits or exit discharges.
(7) Portable heaters shall be equipped with a tilt or tip-over switch that
automatically shuts off the flow of LP-Gas if the appliance is tilted more than
19 degrees from vertical.
SWIECICKI, B.: The NPGA’s T & S Committee is planning to work with the
Z21 Technical Advisory Group on outdoor heating appliances to review the
requirements for patio heaters. After doing so, we hope to submit a comment
that will correlate the requirements of the product standard with those proposed
for NFPA 58 to ensure no overlap or conflicts exist.
________________________________________________________________
(Table 6.6.3.3)
________________________________________________________________
Recommendation: Revise Table 6.6.3.3, Row 2, Attached Supports Column:
Nonfireproofed steel on firm foundations masonry, or concrete foundations
more than 12 in. (300 mm) above the ground.
Substantiation: To make the table consistent with 6.6.3.1.
________________________________________________________________
(6.6.5.1)
________________________________________________________________
6.6.5.1 Single containers constructed as portable storage containers for
temporary stationary service in accordance with 5.2.7.2(A) and 5.2.7.2(B) shall
be placed on concrete pads, paved surfaces, or firm earth for such temporary
service (not more than 12 months at a given location).
Substantiation: Paragraphs 5.2.7.2(A) and (B) have been combined in 58-32
(Log #CP24a).
________________________________________________________________
(6.6.6.1)
________________________________________________________________
Add the following to 6.6.6.1(I)
6.6.6.1(I) Containers shall be coated or protected to minimize corrosion. See
Annex K.
Substantiation: This proposal provides installers guidance for installing
underground tanks.
Add the proposed text as A.6.6.6.1.
Committee Statement: Accepted and properly located.
MCTIER, S.: The LP-gas industry should make every effort to obtain a
consensus on language for corrosion requirements that could be mandated.
________________________________________________________________
(6.6.7.2(15))
________________________________________________________________
Submitter: Robert Bourke, Northeastern Regional Fire Code Dev.
Recommendation: Revise to read: (15) The location of the container shall
have fixed stairs or another method to reach it maintained in a manner so as to
provide immediate access to the roof from the floor(s) below. When required
by the AHJ or the Fire Department such stairwell shall be equipped with a
listed explosion proof positive pressure stairwell ventilation device designed
to provide positive air pressure in the uppermost stairwell floors with a start/
stop control accessible from a remote location and secured in a manner as
prescribed by the AHJ. The stairwell opening to the roof shall be equipped so
as to open automatically upon activation of the stairwell fan.
Substantiation: A stairwell of appropriate width, construction materials,
and load carrying capability as defined by the appropriate building or fire
code when properly maintained with immediate access to the roof is the only
consistent and safe method for fire suppression personnel to advance hose
lines and equipment to the tank location on the roof of a Type I or II building
beyond the reach of their aerial devices. Reliance on fire department aerial
devices is not an adequate means of access as they may not be immediately
available or may be required to be used for other purposes such as rescue
operations. Additionally the stairwell contains the fire hose standpipe
connection to provide the water supply. The term “or another method to reach
it” is too vague and does not define an immediate and permanently installed
legal means of access/egress, area of safe refuge, or one that contains a water
supply. The pressurization of the stairwell will provide a safe means of roof
access/egress and area of safe refuge for fire suppression personnel when the
stairwell is appropriately ventilated. The fan, when coupled with the automatic
opening of the stairwell closure at the roof level, will provide a method to
58-18
NFPA 58
safely ventilate vapors from the stairwell prior to fire suppression personnel
entering. Without stairwell pressurization fire suppression personnel could be
faced with flammable vapors descending the stairs prior to or immediately
upon opening the stairwell door at the roof level due to the physical properties
of the product should the container or connected devices be leaking.
Committee Statement: The proposed item is a building safety issue, and
belongs in other codes.
inspection shall include a visual check of the PRV stacks, rain caps, weep
(drain) holes, corrosion, debris, and other defects, etc., that may interfere with
proper operation.
Substantiation: Due to the importance of the operation of the PRV’s as a
primary safety device they should be inspected annually to prevent, as much as
practicable, any malfunction. No PRV is immune from malfunction that may be
due to widely varying environmental and service conditions, etc. The Annex
material on PRV’s is not mandatory.
Committee Statement: The proponent provides no history of failure of
pressure relief valves that this proposal would correct.
________________________________________________________________ Ballot Results: Affirmative: 21 Negative: 3
58-78 Log #CP25c Final Action: Accept
(6.7.2.3)
________________________________________________________________ Explanation of Negative:
BELKE, J.: In recent code cycles the committee has consistently opposed
requirements for relief valve testing, arguing that such testing is too expensive
for little safety benefit, even though other design codes and standards require
6.7.2.3 Pressure relief devices on the following ASME containers shall be
installed so that any gas released is vented away from the container upward and such testing and manufacturers generally recommend it. This proposal deals
with the cost concern by requiring only that relief valves be periodically
unobstructed to the open air:
visually inspected, yet the committee still rejects the proposal. I believe the
(1) Containers of 125 gal (0.05 m3) or more water capacity installed in
committee is mistaken in continuing to reject any proposals that would require
stationary service
pressure relief valve maintenance, no matter how minor.
(2) Portable storage containers
CZISCHKE, R.: I believe that proper inspection and maintenance of pressure
(3) Portable tanks of nominal 120 gal (0.5 m3) or more water capacity
relief valves is important and should be mandated.
(4) Cargo tanks
FREDENBURG, R.: I agree that relief valves need inspection, and we include
Substantiation: Conflicts with the definition of “Portable Tank”.
some inspection items in every tank inspection we do for any size tank. The
proposal includes some items that would be problematic in the industry. The
requirement to check for corrosion and debris, while an excellent idea, would
be difficult or impossible without removing the vent stacks or having remote
video equipment to drop down the stack. Also, since we do annual inspections
________________________________________________________________ of all bulk plants (whatever that really is), our inspection could be construed as
the documentation for the required inspection. But we do not get up to the
relief valves in most situations to check items such as the weep holes and stack
(6.7.2.16)
________________________________________________________________ material. (One inspector was told during an inspection this week that the stacks
were aluminum, a violation of 6.7.2.15.(2)). The problem is access. To get to
the relief valves on most tanks would require a ladder that we do not have and
6.7.2.16 Where a pressure relief device is installed inside an ASME container fall protection we have not yet decided to provide.
dome, housing, or manhole with a removable cover and the opening that allows ________________________________________________________________
Final Action: Accept
the discharge from the pressure relief device is covered, the opening cover shall 58-81 Log #128 (6.7.4)
be designed and installed so that it will be opened or removed by a discharge
________________________________________________________________
from the pressure relief device.
Substantiation: A propane marketer and equipment supplier associated with
Consumer Services
the propane gas industry has gathered information on debris, insects and
Recommendation: Remove Section 6.7.4 from Section 6.7. Create a new
reptiles which accumulate in the dome area of underground propane storage
Section 6.8 with a heading of “Regulators” and place the information from
tanks. In the areas where snow accumulates, the snow and ice may also settle
6.7.4 in the new section.
in the dome area causing obstruction of the appurtenances. The concerns are
Substantiation: Section 6.7 is for container appurtenances. Section 6.7.4 is for
the obstruction of the regulator vent, covering of the liquid level gauge and
regulators, and these are not container appurtenances. They are beyond the
operation of the vapor service valve. A new product is being developed and
pressure boundary of the container and do not fall under the definition of
tested to provide a temporary seal over the opening in the dome which is
intended to allow the free unobstructed discharge of the pressure relief device. container appurtenances.
This device will be removed by the action of the pressure relief devices if it is
required to operate. The device is presently being tested and can be
demonstrated at the next Technical Committee Meeting. The addition of this
section to the standard will allow a device to be used, however it would not be Ballot Not Returned: 6 Lewis, J., Stookey, S., Villarreal Reza, R., Volgstadt,
mandatory.
Committee Statement: Further testing is needed to demonstrate the long term MCTIER, S.: See My Affirmative with Comment on 58-47 (Log #68).
performance of the device under actual use conditions. While the committee
________________________________________________________________
agrees the concept has validity, more data is needed.
58-82 Log #59c Final Action: Accept
(6.7.4.1, 6.7.4.2, 6.8.3.9, 6.8.7.3, 6.15.2.2, 6.15.3.2 and 6.21.5.1)
________________________________________________________________
6.7.4.1 First-stage or high-pressure regulators shall be directly attached or
MAHRE, B.: This proposal was intended to clarify the use of the term
attached by flexible metallic connectors to the vapor service valve of a
building by adding the word enclosure. The present wording uses the term
underneath which could be used with the proposal as follows: “Cylinders shall container, or to a vaporizer outlet, or to interconnecting piping of manifolded
containers or vaporizers. used on stationary (permanent) container installations
not be located or installed underneath or inside any building or enclosure
and to interconnecting piping of manifolded stationary (permanent) container
unless the space is open to the atmosphere for 50 percent of its perimeter or
installations, or to a vaporizer outlet. These stationary installations shall
more.”
comply with 3.3.69.
6.7.4.2 First stage or high pressure regulators installed downstream of high________________________________________________________________ pressure regulators shall be exempt from the requirement of 6.7.4.1. Regulators
shall be directly attached or shall be permitted to be attached by flexible hose
connector or flexible metallic connector to portable type cylinders that are
(6.7.2.16 (New) )
________________________________________________________________ installed and replaced on a cylinder exchange basis.
6.8.3.9 Piping systems including interconnecting the interconnection of
Submitter: Paul N. Bogan, Sea-3, Inc.
permanently installed containers shall compensate for expansion, contraction,
Recommendation: Add a new section to read as follows:
6.7.2.16 Pressure relief valves (PRV’s) on non refrigerated containers of 4000 jarring, vibration, and settling.
(A) The use of metallic flexible connectors shall be permitted. Flexible
gallon water capacity or higher shall be inspected annually, as per the
metallic connectors shall be permitted to be used.
manufacturer’s recommendations. The inspection shall be documented. The
(B) (Unchanged.)
58-19
NFPA 58
6.8.7.3 Flexible metallic connectors shall not exceed 60 in. (1.52 m) in
overall length when used with liquid or vapor piping on stationary containers
of 2000 gal water capacity or less.
6.15.2.2 Installation shall be made so that the pump casing is not subjected to
excessive strains transmitted to it by the suction and discharge piping. This
Such protection shall be accomplished by piping design, the use of flexible
metallic connectors or expansion loops that do not exceed 36 in. (1 m) in
overall length, or by other means.
6.15.3.2 Installation shall be made so that the compressor housing is not
subjected to excessive strains transmitted to it by the suction and discharge
piping. T he use of Flexible metallic connectors that do not exceed 36 in. (1 m)
in overall length to that isolate the piping shall be permitted to be installed
used.
6.21.5.1 (E) Flexible connectors of more than 36 in. overall length, or fuel lines
that incorporate hose, shall be used only with the approval of the authority
having jurisdiction.
Flexible connectors longer than currently permitted, or fuel lines that
incorporate hose, shall be used only with the approval of the authority having
jurisdiction.
Accept and retain (E) in 6.21.5.1.
________________________________________________________________
(6.7.4.5)
________________________________________________________________
6.7.4.5 The point of discharge from the required pressure relief device on
regulated equipment installed outside buildings or enclosures in fixed piping
systems shall be located not less than 3 ft (1 m) horizontally away from any
building or enclosure opening below the level of discharge, and not beneath
inside any building or enclosure unless this space is well ventilated to the
outside and is not enclosed for more than 50 percent of its perimeter.
Substantiation: This modification will clarify the intent of the requirement for
the location of cylinders. The addition of the wording “or enclosure” will also
clarify that the intent of the code is to prevent any accumulation of fugitive
gases escaping from the cylinder pressure relief device and migrating through
openings.
Enclosures, such as tents, weather shelters and other structures which are not
normally considered buildings would be included. The present code also limits
this section to fixed piping systems. The migration of fugitive gases from
pressure relief devices should be considered at all installations.
The term “is well ventilated to the outside” is open to a varied interpretation
and can not be defined.
6.7.4.5 The point of discharge from the required pressure relief device on
regulated equipment installed outside buildings or enclosures in fixed piping
systems shall be located not less than 3 ft (1 m) horizontally away from any
building or enclosure opening below the level of discharge, and not beneath or
inside any building or enclosure unless this space is well ventilated to the
outside and is not enclosed for more than 50 percent of its perimeter.
Committee Statement: The proposal is accepted, and the application to
beneath buildings is retained as it is needed.
CZISCHKE, R.: The word “enclosure” is too vague without a proper
definition.
KING, J.: The use of “enclosure” without a definition will confuse users of
the Code as to the intent of the Committee.
MISEL, JR., G.: The word “enclosure” is too broad in this context. I would
suggest that it be changed to “occupiable structure,” which would include tents
and the things that are mentioned in the substantiation by the proponent.
MORTIMER, F.: This proposal would not clarify the code, but would only
add confusion.
SWIECICKI, B.: The word “enclosure” is too broad in this context. I would
suggest that it be changed to “occupiable structure,” which would include tents
and the things that are mentioned in the substantiation by the proponent.
________________________________________________________________
(6.8)
________________________________________________________________
Submitter: William J. Young, Superior Energy Systems, Ltd.
6.8.X.X LP-Gas vapor at pressures greater than 20 psi (138 kPag) and not more
than 50 psig (345 kPag) shall be permitted in buildings or separate areas of
buildings when the process being served requires higher pressures for proper
operation, provided:
1. The ambient temperature surrounding the piping is greater than the dew
point of the LPG at normal operating pressure or
2. There is a low temperature control which positively stops the flow of LPG
into the piping system when the ambient temperature is below the dew point of
the LPG.
Substantiation: The 2004 edition of NFPA 58 section 6.8 states:
6.8 Piping Systems.
6.8.1 Piping System Service Limitations.
6.8.1.1 The physical state (vapor or liquid) and pressure at which LP-Gas
shall be transmitted through piping systems shall be as follows:
(1) Outdoor LP-Gas liquid or vapor metallic piping systems shall have no
pressure limitations.
(2) Outdoor LP-Gas liquid or vapor polyamide piping systems shall have
pressure limitations as defined by the design pressure of the piping being
installed.
(3) Polyethylene piping systems shall be limited to the following:
(a) Vapor service not exceeding 30 psig (208 kPag)
(b) Installation outdoors and underground
(4)*LP-Gas vapor at pressures exceeding 20 psig (138 kPag) or LP-Gas
liquid shall not be piped into any building except where allowed in Section 6.8
. 6.8.1.2 LP-Gas vapor at pressures exceeding 10 psi (138 kPag) shall be
permitted in buildings or separate areas of buildings constructed in accordance
with Chapter 10 and used exclusively to house the following:
(1) Equipment for vaporization, pressure reduction, gas mixing, gas
manufacturing, or distribution.
(2) Internal combustion engines, industrial processes, research and
experimental laboratories, or equipment or processing having a similar hazard.
(3) Engine-mounted fuel vaporizers.
(4) Corrugated stainless steel piping systems shall be limited to vapor service
not exceeding 5 psig (34 kPag).
End of 2004 section.
These sections are difficult to understand, and in one instance, the 2004 text
is not the same as the 2001 text.
(4) Corrugated stainless steel piping systems shall be limited to vapor service
not exceeding 5 psig (34 kPag).
The above in the 2001 edition was 3.2.13 (d). It should now be listed as
6.8.1.1(4), and the existing 6.8.1.1(4) should become 6.8.1.1(5).
(4) (5) *LP-Gas vapor at pressures exceeding 10 psig (138 kPag) or LP-Gas
The following change should be made to 6.8.1.2 so that it agrees with 2001
text.
6.8.1.2 LP-Gas vapor at pressures exceeding 10 20 psi (138 kPag) shall be
permitted in buildings or separate areas of buildings constructed in accordance
with Chapter 10 and used exclusively to house the following:
In addition, the pressure limitation is too restrictive for the real world
applications. Many industrial processes require LPG vapor at pressures over 20
psig, but the process is such that a Chapter 10 building is not warranted. If we
had an upper limit of 50 psig for vapor systems, we could cover the majority of
industrial processes. It would be sensible to require:
1. The ambient temperature about the pipe is greater than the dew point for
the LPG at operating pressure or
2. There is a low temperature control which positively stops the flow of LPG
into the line.
We may also want to consider some of the wording used in NFPA 54 section
5.5.1. This is shown below:
5.5 Piping System Operating Pressure Limitations.
5.5.1 Maximum Design Operating Pressure. The maximum design operating
pressure for piping systems located inside buildings shall not exceed 5 psi (34
kPa) unless one or more of the following conditions are met:
(1)*The piping system is welded.
(2) The piping is located in a ventilated chase or otherwise enclosed for
58-20
NFPA 58
protection against accidental gas accumulation.
(3) The piping is located inside buildings or separate areas of buildings used
exclusively for one of the following:
(a) Industrial processing or heating
(b) Research
(c) Warehousing
(d) Boiler or mechanical equipment rooms
(4) The piping is a temporary installation for buildings under construction.
If we change the wording in NFPA 58 to allow higher pressures, then we also
should send a suggested modification to the NFPA 54 committee to correct
section 5.5.2 of NFPA 54 (shown below).
5.5.2 Liquefied Petroleum Gas Systems. The operating pressure for
undiluted LP-Gas systems shall not exceed 20 psi (140 kPa). Buildings having
systems designed to operate below _5°F (_21°C) or with butane or a propanebutane mix shall be designed to either accommodate liquid LP-Gas or prevent
LP-Gas vapor from condensing back into a liquid.
Exception: Buildings or separate areas of buildings constructed in
accordance with Chapter 7 of NFPA 58, Liquefied Petroleum Gas Code, and
used exclusively to house industrial processes, research and experimental
laboratories, or equipment or processing having similar hazards
6.8.1.3 Where LP-Gas vapor at pressures between 20 psi (138 kPag) and not
more than 50 psig (345 kPag) is piped in buildings or separate areas of
industrial buildings the following shall apply:
1. The temperature surrounding the piping is greater than the saturation
temperature of the LPG at normal operating pressure or
2. A low temperature control which positively stops the flow of LPG into the
piping system when the ambient temperature is below the saturation
temperature at the regulator pressure of the LP-Gas is installed.
MCTIER, S.: First, Proposal 58-85 shown below covers the corrections
needed to clarify 6.8.1.
Second, changing the long standing maximum pressure limit requirement for
LP-Gas vapor piped into buildings from 20 psig to 50 psig without the
requirement for constructing the building or separate areas of the building in
accordance with Chapter 10 should require serious substantiation. Stating that
“the pressure limitation is too restrictive for real world applications” and
“many industrial processes require LPG vapor at pressures over 20 psig” and
therefore “the process is such that a Chapter 10 building is not warranted” is
insufficient and not an acceptable substantiation for making this change.
STANNARD, JR., J.: I agree with the intent of the proposal; however I
believe that the term “saturation temperature” should have been “dew point
temperature.” Commercial propane and butane are not “pure fluids” and the
usual designation of the endpoints of the constant pressure line under the vapor
dome for mixtures are “bubble point” for the liquid side of the dome and “dew
point” for the vapor side of the dome.
________________________________________________________________
(6.8.1, 6.8.1.1 and 6.8.1.2)
________________________________________________________________
6.8.1 Piping System Service Limitations.
6.8.1.1
(4 ) LP-Gas vapor at pressures exceeding 20 psig (138 kPag) or LP-Gas
unless the installation is in accordance with one of the following:
(a) 6.8.1.3 Piping Systems. The buildings or structures are under construction
or undergoing major renovation, where and the temporary piping systems is are
in accordance with 6.17.2 and 6.17.12 shall be exempt from 6.8.1.1(4) .
(b) 6.8.1.2 LP-Gas vapor at pressures exceeding 10 psi (138 kPag) shall be
permitted in The buildings or separate areas of the buildings are constructed in
accordance with Chapter 10 and used exclusively to house the following:
i. ( 1) Equipment for vaporization, pressure reduction, gas mixing, gas
manufacturing, or distribution.
ii. ( 2) Internal combustion engines, industrial processes, research and
experimental laboratories, or equipment or processing having a similar hazard .
iii. (3) Engine mounted fuel vaporizers.
(5) (4 ) Corrugated stainless steel piping systems shall be limited to vapor
service not exceeding 5 psig (34 kPag).
6.8.1.2 6.8.1.4 Liquid piping systems in buildings or structures feeding a
vaporizer other than those covered by 6.8.1.1(4) 6.8.1.2(1) and 6.8.1.2(2) shall
comply with the material requirements of Chapter 11. ”
Substantiation: The above changes revise 6.8.1.1(4) and include the revision
and renumbering of present 6.8.1.2 and 6.8.1.3 . Paragraph 6.8.1.3 is revised
and becomes sub-paragraph (a) of 6.8.1.1(4). Paragraph 6.8.1.2 is revised and
becomes sub-paragraph (b). The listings under new (b) , other than the
corrugated stainless steel pipe, are renumbered. The corrugated stainless steel
pipe becomes (5) in the listing. Former 6.8.1.4 is revised and becomes new
6.8.1.2. This corrects the information in these paragraphs and listings.
Sub-paragraph 6.8.1.1(4)* and its sub-divisions were editorially changed in
the 2004 Edition of NFPA 58 from the language used in 3.2.13(c) and its many
“Exceptions” that were shown in the 2001 Edition. The main reason for the
changes was to eliminate the “Exceptions” in accordance with the
recommendations of the 2003 Edition of the NFPA Manual of Style.
Unfortunately, the language was slightly garbled and a new paragraph 6.8.1.2
was added that used LP-Gas vapor at pressures exceeding 10 psig instead of 20
psig and referenced Section 6.8 for exceptions. The other requirements that
were added or changed by the Committee were all included except corrugated
stainless steel piping was incorrectly shown as being used only in buildings
constructed under Chapter 10. This has all been corrected and re-formatted as
shown below to meet the requirements of the 2003 Edition of the NFPA
Manual of Style as shown below.
The changes to 6.17.12.1 and 6.17.12.2 are needed to correlate with the
changes to 6.8.1.1(4).
Accept the proposal, and add a new 6.8.1.1 (4) (c) to read:
(c) Industrial occupancies in accordance with 6.8.1.3.
Committee Statement: Accepted, and revised to not apply to industrial
occupancies, which are covered separately.
________________________________________________________________
(6.8.1.1(2))
________________________________________________________________
6.8.1.1(2) Insert “ underground ” in the first line between “Outdoor” and
“LP-Gas liquid or vapor polyamide piping systems”.
Substantiation: Based on text in paragraph 6.8.4.1 polyamide pipe, can only
be installed underground.
________________________________________________________________
(6.8.3.1)
________________________________________________________________
Recommendation: Modify NFPA 58 as follows:
6.8.3.1 All metallic LP-Gas piping shall be installed in accordance with
ASME B 31.3, Process Piping for Normal Fluid Service , or Section 6.8.
6.8.3.5 Metallic pipe joints shall be permitted to be threaded, flanged,
welded, or brazed using pipe and fittings that comply with 5.8.3 and 5.8.4 as
follows:
(1) Metallic threaded, and welded, and brazed pipe joints shall be in
accordance with Table 6.8.3.5.
(Remainder unchanged.)
Table 6.8.3.5 Types of Metallic Pipe Joints in LP-Gas Service
Service
Liquid
Schedule 40
Welded or Brazed
Vapor, <125 psig
(<0.9 Mpag)
Vapor, >125 psig
(>0.9 Mpag)
Threaded, Welded or
Brazed
Welded or Brazed
Schedule 80
Threaded, Welded or
Brazed
Threaded, Welded or
Brazed
Threaded, Welded or
Brazed
Substantiation: This proposal implements the NFPA 58 Technical
Committee’s formal interpretation of December 8, 1995, and provides clear
directions for welded and brazed piping systems. The addition of “Normal
Fluid” clarifies which welding inspection procedures are to be used.
The addition of “brazed” in the table and text is for clarification. Braze may
be technically included in the term “weld.” Not all readers of this code will
know that.
Accept the proposal, and add a comma after “Process Piping”.
6.8.3.1 All metallic LP-Gas piping shall be installed in accordance with
ASME B 31.3, Process Piping , for normal fluid service , or Section 6.8.
58-21
NFPA 58
________________________________________________________________
(6.10.1)
________________________________________________________________
Submitter: Gene McPherson, McPherson Propane Inc.
6.10.1 On new installations and on existing installations , All stationary
container storage systems with an aggregate water capacity of more than 4000
gal (15.1 m3) utilizing a liquid transfer line that is 1 1/2 in. (39 mm) or larger
and a pressure equalizing vapor line that is 1 1/4 in. (32 mm) or larger shall be
equipped with either :
1. Emergency shutoff valves.
2. An internal valve where the liquid transfer line is 20 ft or shorter.
Substantiation: This will clarify the circumstances in which an emergency
shutoff valve may be omitted without compromising safety. Without it, 6.10.1
seems to apply without exception, yet 6.10.2 allows an exception for pipe
lengths less than 20 lineal feet. The amount of liquid in 20 feet of 2 in. ID pipe
is 3.2 gallons.
Committee Statement: The committee believes strongly that an Emergency
Shutoff Valve is needed for safety.
________________________________________________________________
(6.10.1)
________________________________________________________________
Consumer Services
Recommendation: Restore the requirements of 2001 edition by requiring
compliance for larger than 1-1/2 lines for liquid and for larger than 1-1/4 for
vapor rather than the 2004 requirements of 1-1/2 or larger for liquid and 1-1/4
or larger for vapor.
Substantiation: A search of the ROP and the ROC for the 2004 cycle did not
show any proposal or comment to make other than an editorial change to this
section. Discussion with NFPA staff indicates this change was made in error.
As this change requires a new compliance requirement for a size of piping
commonly in use with no time to implement the change, it is a hardship on the
companies with the specified size piping that is suddenly out of compliance.
The wording and, hence, the requirements, must be restored to what it was in
the 2001 edition.
Committee Statement: The 2004 edition corrected an error, and no further
revision is needed.
________________________________________________________________
(6.10.10)
________________________________________________________________
Consumer Services
“All new and existing emergency shutoff valves shall comply...” (remainder
unchanged)
Substantiation: With the removal of the wording “new and existing” from the
2001 edition (Section 3.2.19.8), the retroactivity application became unclear.
The previous wording made it clear that this was a retroactive requirement.
There are some bulk plant operators who may have failed to comply with this
requirement prior to the 2001 edition, if it even applied to this site, who might
now argue that their site is “grandfathered.” Please see my related proposal on
Section 1.4.
________________________________________________________________
(6.10.11)
________________________________________________________________
Recommendation: Delete references to sections 6.16.2.3 and 7.2.3.6 so text
reads as follows:
6.10.11 Emergency shutoff valves for railroad tank car transfer systems shall
be in accordance with 6.16.2.6 , 6.24.4 , 7.2.3.7 , and 7.2.3.8.
Substantiation: The deleted sections do not have any requirements related to
Emergency shutoff valves.
________________________________________________________________
(6.11, 6.11.1)
________________________________________________________________
Recommendation: Insert a new 6.10.10 as follows and renumber subsequent
sections:
6.11 Remote Shutoff Actuation
6.11.1 Where LP-Gas vapor is used as a pressure source for activating the
remote shutoff mechanisms of internal valves and emergency shutoff valves,
the following shall apply:
(1) Actuators and pressure supply line components shall be compatible with
LP-Gas vapor.
(2) Supply line piping materials shall be limited to a maximum of 3/8 inch.
(9.0mm) outside diameter.
(3)* Supply pressure shall be controlled to prevent condensation of the LP-Gas
vapor.
(4) The LP-Gas supply maximum flow rate to the system shall not exceed that
from a No. 54 drill orifice.
Substantiation: Numerous bulk plant installations in the United States are
successfully using LP-Gas vapor as a pressure source for activating remote
shutoffs. The Technical Committee recognizes the viability of this type of
installation as evidenced by the 2004 edition provision that allows venting of
LP-Gas for this application:
“7.3.1(8) Venting of LP-Gas vapor utilized as the pressure source in remote
shutdown systems for internal valves and emergency shutoff valves shall be
permitted.”
Various pressure sources offer different characteristics that must be considered
in the design of a remote shut down system. This requirement provides the
necessary regulations to insure that a system is properly installed.
This requirement also recognizes that there are various materials that can be
utilized in the design and construction of a remote shut down system. However,
when using LP-Gas vapor, an installer must insure that the materials are
approved to be used with the vapor. This requirement is consistent with other
stipulations in the code.
The proposed maximum tubing size of 3/8” OD allows flexibility in system
design. The quantity of gas released in the event of tubing failure is limited by
an inlet orifice.
LP-Gas is inexpensive, readily available, free of moisture and provides a
reliable pressure source for a properly designed activation system. Guidance
for designing LP-Gas systems is provided in the appendix. The proposed
guidance recognizes different environmental conditions that must be considered
during the design phase of the system.
Accept and number the proposed paragraphs as 6.10 to correct a
misnumbering in the proposal.
KING, J.: The proposal does not prohibit the use of metallic piping or tubing
as a supply line piping material for this application. The use of plastic piping or
tubing is needed to help provide every opportunity for rapid loss of pressure
and closing of the valves under fire conditions. A proposal addressing this
concern is invited.
________________________________________________________________
(6.16.2.5)
________________________________________________________________
Consumer Services
This requirement is retroactive to existing facilities within one year of the
effective date of this code.
Substantiation: The requirement to design piping to exclude debris has had a
positive impact on the operability of back-flow prevention valves and ESVs. It
has added an important safety feature. However, we are finding that some
transport drivers are removing the screens, believing that they are not required
on older facilities. They think it significantly increases unloading time, contrary
to some studies done that show negligible effect. Making this retroactive will
clarify the requirement and improve safety.
Committee Statement: Screen removal is an operating issue, and if needed,
should be added to the Operations and Maintenance chapter.
FREDENBURG, R.: I still believe that making a device to exclude debris
retroactive is a very good safety measure.
58-22
NFPA 58
________________________________________________________________
(6.16.3)
________________________________________________________________
6.16.3 Installation of Gas Distribution Blending Facilities.
6.16.3.1 Gas distribution blending facilities shall include the following:
(1) Gas manufacturing facilities
2) Gas storage facilities, other than cylinder storage
(3) Gas-air mixing and vaporization facilities
(4) Compressors not associated with liquid transfer
Substantiation: The title of this section is unclear and has been interrupted
incorrectly. The equipment described in this section is storage, handling,
blending and transfer of LP-Gas and LP-Gas/Air mixtures. The output of these
systems is then transferred to distribution piping.
Committee Statement: The text has been deleted by Committee Action on 5895 (Log #67).
________________________________________________________________
(6.16.3)
________________________________________________________________
6.16.3 Installation of Gas Distribution Facilities
6.16.3.1 Gas distribution facilities shall include the following:
(1) Gas manufacturing facilities
(2) Gas storage facilities, other than cylinder storage
(3) Gas-air mixing and vaporization facilities
(4) Compressors not associated with liquid transfer
6.16.3.2 Gas distribution facilities shall not include the following:
(1) Cylinder storage facilities
(2) Facilities for vaporizing LP-Gas and gas-air mixing
6.16.3.3 Separate buildings and attachments to such buildings or rooms within
other buildings housing gas distribution facilities shall comply with Chapter 10.
6.16.3.4 Separate buildings used for housing vapor compressors shall be
located in accordance with 6.5.3, considering the building as one that houses a
point of transfer.
6.16.3.5 Gas distribution facilities located in pits shall have automatic
flammable vapor detection systems.
6.16.3.6 Drains or blow-off lines shall not be directed into or in proximity of
sewer systems.
6.16.3.7 If gas is to be discharged from containers inside a building, the
installation provisions of 7.3.2.1 shall apply.
Substantiation: There is no definition of gas distribution facilities in the
document. Therefore, it is difficult to discern when it applies. However,
virtually every subsection is covered elsewhere in NFPA 58, as outlined below:
6.16.3.1 (1):
This can include storage, which is covered in 6.6, vaporizing, which is
covered in 6.19, and possibly gas-air mixers, which is covered in 6.19.8.
6.16.3.1 (2):
This is addressed by Section 6.6.
6.16.3.1 (3):
This is addressed by Sections 6.19 and 6.19.8.
6.16.3.1.(4):
These are part of gas-air mixers 6.19.8 and if used to boost pressure of
undiluted propane are addressed in 6.15.3.
6.16.3.2 :
If 6.16.3 is deleted, it is not necessary to have a section showing what 6.13.3
does not include. However, 6.16.3.2 (2) is in complete disagreement with
6.16.3.1 (3) and (4).
6.16.3.3:
The title of chapter 10 is “Buildings or Structures Housing LP-Gas
Distribution Facilities” 6.16.3.3 adds nothing to the document.
6.16.3.4:
6.16.3.1 (4) states that this subsection applies to “compressors not associated
with liquid transfer” so the reference to 6.5.3 does not make sense. However, if
vapor compressors in a building are a hazard that requires distances as outlined
in 6.5.3, then section 6.16.3.4 should be relocated to 6.15.3 Compressor
Installation.
6.16.3.5:
This is the only requirement in NFPA 58 for an automatic gas detector. The
only thing, which might be installed in a pit, would be a valve. Requiring gas
detection in such a location serves no useful purpose. Also, there is no
indication of what the detector should do. This reference is often used by
authorities having jurisdiction to indicate that low areas, including basements,
may need hydrocarbon detectors. 6.16.3.5 has no value, and may be improperly
used to require flammable detectors in any low area.
6.16.3.6:
This should be moved to 7.3 venting LP-Gas into an atmosphere
6.16.3.7:
Section 7.3.2.1 adequately addresses this; therefore 6.16.3.7 is not needed.
O’NEIL, V.: Substantiation states that the entirety of this section (6.16.3) is
covered elsewhere in the code. This is not true. Substantiation proposes that
section 6.16.3.6 be moved to 7.3, however there is no proposal to address this.
________________________________________________________________
(6.16.3.2)
________________________________________________________________
Recommendation: Delete the following text:
6.16.3.2 Gas distribution facilities shall not include the following: (1)
Cylinder Storage facilities (2) Facilities for vaporizing LP-Gas and gas air
mixing.
Substantiation: This paragraph is unnecessary. Item 1 is covered under
6.16.3.1(2) and item 2 is in direct conflict with 6.16.3.1(3).
Refer to Committee Action on 58-95 (Log #67), which deletes the
requirement.
Committee Statement: The proposal is moot.
________________________________________________________________
(6.16.3.3)
________________________________________________________________
6.16.3.3 Separate buildings and attachments to such buildings or rooms within
other buildings housing gas distribution blending facilities shall comply with
Chapter 10.
Substantiation: This will modify the wording as proposed in 6.16.3
substituting “blending” for “distribution”.
Committee Statement: The requirement is deleted in 58-95 (Log #67).
________________________________________________________________
(6.16.3.5)
________________________________________________________________
6.16.3.5 Gas distribution facilities l ocated in pits shall have automatic
flammable vapor detecting devices. shall not be located in pits.
Substantiation: This paragraph has attempted to be interpreted to mean that
gas piping can not be installed in below grade installations without the use of a
gas detector. This has been an argument in many legal cases brought against
the propane marketer. It is the only reference to a gas vapor detector in NFPA
58. The gas distribution facilities as described in 6.16.3.1(1), (2), (3), and (4)
may cause other additional hazards, such as confined space entries, debris
collection and standing water, if installed in a pit. I am not sure what the
interpretation of a “pit” is. If the intent of this type of facilities are for utility
use, it would be under the NFPA 59 Code. The remainder of Section 6.16.3
deals with buildings to enclose the “gas distribution facilities”.
Committee Statement: The requirement is deleted in 58-95 (Log #67).
________________________________________________________________
(6.16.5)
________________________________________________________________
6.16.5.1 The facility operator shall provide security measures to minimize entry
by unauthorized persons. At a minimum, such measures shall include including
(1) Security awareness training as outlined in Section 1.5 and
(2) Limitation of unauthorized access to plant areas that include container
appurtenances, pumping equipment, loading and unloading facilities, and
container filling facilities.
6.16.5.2 The facility area Areas that include features required in 6.16.5.1 (2)
58-23
NFPA 58
shall be enclosed with at least a 6 ft (1.8 m) high industrial-type fence, chain
link fence, or equivalent protection.
(A) through (E) Unchanged
Substantiation: The proposed text clarifies the area requiring security.
________________________________________________________________
58-100 Log #112a Final Action: Accept in Principle
(6.17)
________________________________________________________________
6.17.1.1(3 ) Composite cylinders used with listed cabinet heaters inside of
buildings.
6.17.1.2(A) The use of cylinders indoors shall be only for the purposes
specified in 6.17.1.2(C) and 6.17.4 through 6.17.10.
6.17.1.2(B) The use of cylinders indoors shall be limited to those conditions
where operational requirements make the indoor use of cylinders necessary and
location outside is impractical except for composite cylinders that are permitted
to be used indoors with listed cabinet heaters.
6.17.1.2(C) Composite cylinders that are connected to listed cabinet heaters
shall be permitted to be used indoors.
6.17.1.4 Transportation of cylinders within a building shall be in accordance
with 6.17.3.6 and 6.17.3.7 .
6.17.3.6 Transportation (movement) of steel and aluminum cylinders having
water capacities greater than 2.7 lb (1.2 kg) within a building shall be restricted
to movement directly associated with the uses covered by Section 6.17.
6.17.3.7 Transportation (movement) of composite cylinders having water
capacities not exceeding 53 lbs shall be permitted within a building.
All of the changes to 6.17 are “housekeeping” items that enable the use of
propane cylinders inside of buildings.
outages.
Modify text as follows:
6.17.1.1(3 ) Composite cylinders used with listed cabinet heaters inside of
buildings.
6.17.1.2(A) The use of cylinders indoors shall be only for the purposes
specified in 6.17.1.2(C) and 6.17.4 through 6.17.10.
6.17.1.2(B) The use of cylinders indoors shall be limited to those conditions
where operational requirements make the indoor use of cylinders necessary and
location outside is impractical except for composite cylinders that are permitted
to be used indoors with listed cabinet heaters.
6.17.1.2(C) Composite cylinders that are contained within and connected to
listed cabinet heaters shall be permitted to be used indoors.
6.17.1.4 Transportation of cylinders within a building shall be in accordance
with 6.17.3.6 and 6.17.3.7 .
6.17.3.6 Transportation (movement) of steel and aluminum cylinders having
water capacities greater than 2.7 lb (1.2 kg) within a building shall be restricted
to movement directly associated with the uses covered by Section 6.17.
6.17.3.7 Transportation (movement) of composite cylinders having water
capacities not exceeding 53 lbs shall be permitted within a building.
CZISCHKE, R.: See My Explanation of Negative on 58-6 (Log 107).
KING, J.: To permit the use of cylinders under the conditions described in the
proposal is not in the best interest of safety due to the potential for fires and
explosions resulting from leaking gas.
O’NEIL, V.: This proposal suggests allowing cabinet heaters with composite
cylinders be used indoors. Neither of these, as presented at the meetings, have
been approved by a testing agency for use in any application indoors, nor is
there a standard for the construction of such items. This proposal is premature
and should be tabled until all testing is completed and can be reviewed in a
timely manner (i.e., not at the last minute).
RAJ, P.: The principal reason that I am voting against this proposal is
because not all scheduled experiments to understand the behavior of composite
cylinders exposed to external fire were complete before the Committee took
action to allow these cylinders to be used in indoor cabinet heaters. In fact,
some of the very crucial data related to release of gas through the walls of the
cylinder after the exposing fire is extinguished are not available. Even the
researcher at Battelle Columbus Laboratories agreed that this part of the
“cylinder behavior” posed some serious safety questions (related to LP Gas
release into the closed building or room, after the room fire is extinguished). In
my opinion, the Committee has acted prematurely to accept this proposal
without the benefit of the complete set of data. In fact, the Committee insisted
in having the complete set of data when it rejected a proposed cover over the
relief valve from a manufacturer who had conducted limited experiments. The
Committee cannot have double standards and differing principles when it
comes to accepting one system with limited data and rejecting another system
for the same reason.
MAXON, R.: The Compressed Gas Association has not had ample time to
review and ballot its members on this proposal. The Compressed Gas
Association cannot support a proposal for which an ANSI Standard has not
been written. The CGA expects to comment further for the ROC meeting.
BELKE, J.: The proposal would allow composite cylinders to be used
indoors. The results of fire testing presented to the committee seem compelling
evidence that this can be done relatively safely. However, I have some
lingering reservations. One is that none of the testing presented to the
committee addresses the potentially increased risk of confined vapor cloud
explosions resulting from extinguishment of a burning composite cylinder
while it is still partially full of propane. A second, related concern is that the
committee has heard relatively little so far from the fire fighting community on
whether they have concerns with such installations, and whether fire fighting
tactics will need to be modified to address the different characteristics of
composite cylinders. Hopefully, these issues will be addressed before
completion of the code cycle.
FREDENBURG, R.: I voted to accept this proposal with several reservations.
The biggest of these are that the testing is not complete and that the promised
standard is not complete. I am voting to affirm fully expecting the testing to be
complete, the standards to be in place and available for review, and the
connecting devices to be designed and available by the time of the comment
meeting. If they are not complete and acceptable to me by that meeting, I
expect to vote against this proposal then. If no comment is made on the
proposal to provide the information, then I will change my vote to oppose the
proposal.
PHILLIPPI, H.: Add word “listed” in front of every instance of “composite
cylinders” in affected paragraphs.
________________________________________________________________
(6.17.2.6)
________________________________________________________________
6.17.2.6 Hose, hose connections, and flexible connectors shall comply with
the following:
(1) Hose used at pressures above 5 psi (34 kPa) shall be designed for a
pressure of at least 350 psig (2.4 MPag).
(2) Hose used at a pressure of 5 psi (34 kPa) or less and used in agricultural
buildings not normally occupied by the public shall be designed for the
operating pressure of the hose.
(3) Hose shall comply with 5.8.6.
(4) Hose shall be installed in accordance with Section 6.18.2.
(5) Hose length requirements of 6.18.2.2(1) shall be applicable.
( 6 5) Hose shall be as short as practical, without kinking or straining the
hose or causing it to be close enough to a burner to be damaged by heat.
(6) Hoses greater than 10 ft (3.3 m) in length shall be protected from damage.
Substantiation: Paragraph 6.17.4.4 of NFPA 58 mandates that construction
heaters must be located at least 6 feet from a cylinder. However, 6.18.2.2(1)
currently limits portable appliance hose to a maximum of 6 feet. In the 1998
edition of NFPA 58, 3.4.2.3(b) allowed this 6 foot maximum to be extended to
permit the needed spacing between cylinder and construction heater. In
addition, the ANSI Z83.7 Standard for Construction Heaters specifies a hose
length between 10 and 25 feet.
58-24
NFPA 58
MCTIER, S.: In 6.17.2.6 (1) and (2) add “g” to “psi” and “kPa”.
________________________________________________________________
(6.17.12.1, 6.17.12.2)
________________________________________________________________
6.17.12.1 Buildings or separate areas of buildings into which LP-Gas liquid
at pressures exceeding 20 psig is piped shall be constructed in accordance with
________________________________________________________________ Chapter 10 and shall be used for the purposes listed in 6.8.1.2 6.8.1.1(4)(b).
6.17.12.2 Liquid LP-gas piped into buildings under construction or major
(6.17.3)
renovations in accordance with 6.8.1.3 6.8.1.1(4)(a) shall comply with
________________________________________________________________ 6.17.12.2(A) through 6.17.12.2(J).
NOTE: This proposal appeared as Comment 58-136 (Log #CC39) which Substantiation: The above changes revise 6.8.1.1(4) and include the revision
was held from the November 2003 ROC on Proposal 58-1.
and renumbering of present 6.8.1.2 and 6.8.1.3 . Paragraph 6.8.1.3 is revised
and becomes sub-paragraph (a) of 6.8.1.1(4). Paragraph 6.8.1.2 is revised and
Recommendation: Delete Section 6.17.3.
becomes sub-paragraph (b). The listings under new (b) , other than the
Substantiation: The section has been superceded by federal law, 49 CFR Part corrugated stainless steel pipe, are renumbered. The corrugated stainless steel
192.
pipe becomes (5) in the listing. Former 6.8.1.4 is revised and becomes new
6.8.1.2. This corrects the information in these paragraphs and listings.
Committee Statement: Paragraph 6.17.3 in the 2004 edition does not conflict Sub-paragraph 6.8.1.1(4)* and its sub-divisions were editorially changed in
with federal regulations.
the 2004 Edition of NFPA 58 from the language used in 3.2.13(c) and its many
“Exceptions” that were shown in the 2001 Edition. The main reason for the
changes was to eliminate the “Exceptions” in accordance with the
recommendations of the 2003 Edition of the NFPA Manual of Style.
Unfortunately, the language was slightly garbled and a new paragraph 6.8.1.2
________________________________________________________________ was added that used LP-Gas vapor at pressures exceeding 10 psig instead of 20
psig and referenced Section 6.8 for exceptions. The other requirements that
(6.17.3.1)
were added or changed by the Committee were all included except corrugated
________________________________________________________________ stainless steel piping was incorrectly shown as being used only in buildings
Submitter: Eddie Phillips, Southern Regional Fire Code Development
constructed under Chapter 10. This has all been corrected and re-formatted as
Committee
shown below to meet the requirements of the 2003 Edition of the NFPA
Recommendation: Revise the following paragraphs of the 2001 edition to
Manual of Style as shown below.
read:
The changes to 6.17.12.1 and 6.17.12.2 are needed to correlate with the
3.4.9.2 Cylinders having water capacities greater than 2.7 lb (1 kg) [nominal changes to 6.8.1.1(4).
1 lb (0.5 kg)] LP-Gas capacity shall be prohibited on balconies of lodging and
rooming houses, apartment buildings and hotel and dormitories.
3.4.9.2.1 Cylinders having water capacities less than 2.7 lb (1 kg) [nominal 1 Ballot Results: Affirmative: 24
lb (0.5 kg)] LP-Gas capacity shall be permitted on balconies of lodging and
rooming houses, apartment buildings and hotel and dormitories of less than 3
stories in height.
________________________________________________________________
3.4.9.2.1.1 Cylinders having water capacities less than 2.7 lb (1 kg) [nominal 58-106 Log #64a Final Action: Accept
1 lb (0.5 kg)] LP-Gas capacity shall be permitted on first floor balconies of
(6.18.2, 6.18.2.2 and 6.18.2.3)
lodging and rooming houses, apartment buildings and hotel and dormitories of ________________________________________________________________
3 or more stories in height.
3.4.9.2.2 Cylinders located on balconies served by outside stairways, where
only such stairways are used to transport the cylinder shall not be prohibited.
6.18.2 Hose for Portable Appliances .
Substantiation: The proposed wording clarifies the intent of this section that is 6.18.2.2 Where used inside buildings, the following shall apply:
sometimes confusing. We have heard from many fire prevention personnel that (1) The hose shall be the minimum practical length not exceeding 610 ft ( 3.3
the wording is confusing. The proposed wording breaks out the existing
m) and shall be in accordance with 6.17.2.6.
requirements and clarifies the wording. It also makes the provisions comply
with the manual of style.
6.18.2.3 Where installed outside of buildings, the hose length shall be
permitted to exceed 6 ft ( 1.8 m) 10 ft (3.3 m) but shall be as short as practical.
Committee Statement: The proposal would make the requirement more strict Substantiation: The proposal lengthens the 6 foot requirement for both
than the committee intends. The committee notes that the section has been
cylinders in buildings and cylinders used outdoors. This eliminates not only the
revised in the 2004 edition.
current contradiction in the code, but also the contradiction between the NFPA
and construction heater standards. Extending the hose length will not
compromise safety. Where hoses greater than 10 ft in length are used, the
proposed new requirement for additional protection is applicable.
________________________________________________________________ Modify NFPA 58 as follows:
6.18.2 Hose for Portable Appliances .
(6.17.8.1)
6.18.2.2 Where used inside buildings, the following shall apply:
________________________________________________________________ (1) The hose shall be the minimum practical length not exceeding 6 ft (1.8 m)
and shall be in accordance with 6.17.2.6.
6.17.8.1 Cylinders shall not be used in buildings for temporary emergency
6.18.2.3 Where installed outside of buildings, the hose length shall be
heating purposes except when all of the following conditions are met:
permitted to exceed 6 ft ( 1.8 m) 10 ft (3.3 m) but shall be as short as practical.
(1) The permanent heating system is temporarily out of service.
Committee Statement: Accepted and clarified.
(2) Heat is necessary to prevent damage to the buildings or contents.
(3) The cylinders and heaters comply with and are used and transported in
accordance with 6.17.2 and 6.17.4.
(4) The temporary heating equipment is not left unattended.
(5) Air for combustion and ventilation is provided in accordance with NFPA
54.
O’NEIL, V.: Existing code is sufficient and has not proven burdensome.
Other building codes are currently more stringent than the 6 ft allowed by
Substantiation: Reference to NFPA 54 is added to provide sufficient air for
NFPA 58. Removing restraints on length would only exacerbate these conflicts.
complete combustion of propane.
Also, I am concerned over the reference to cylinders in the substantiation.
________________________________________________________________
(6.19.4.2)
________________________________________________________________
of NFPA 58:
Section Number:
58-25
NFPA 58
6.19.4.2 - “If the tank heater... exceeds 75 percent of the maximum design
pressure allowable working pressure specified in...”
________________________________________________________________
(6.20.3.4, A.6.20.3.4)
________________________________________________________________
Recommendation: 6.20.3.4* Remove asterisk on 6.20.3.4 and delete
A.6.20.3.4.
A.6.20.3.4 The installation of vaporizers and vaporizing burners is covered in
Section 6.19.
Substantiation: The above statement is not needed in the text or in the Annex.
Somehow or other it just appeared. It was a rewrite of Exception No. 2 of
paragraph 3.7.3.3 in the 2001 Edition of NFPA 58 and has nothing to do with
6.20.3.4.
________________________________________________________________
(6.21.3.1(G) (New) )
________________________________________________________________
Submitter: David W. Meyer, Gas Training & Development
Recommendation: Add new text to read:
(G) ASME mobile containers shall have a MAWP of 250 psig (1.7 MPag)
when used on non-passenger, agricultural, towed vehicle.
Substantiation: The requirements for mobile containers to have a 312 psig
MAWP are based on the typical applications of:
A. Engine fuel for multi-passenger vehicles normally operated and/or used on
public highways or public property,
B. Liquid withdrawal vaporizing burner applications, such as tar kettles,
again typically used on public property or where numerous people are present,
and
C. Vapor use on recreational vehicles for cooking, heating, and water heating
on public property having high concentrations of people.
The intended applications for this proposal are mobile containers used on
non-passenger agricultural vehicles, for a purpose other than fuel for an internal
combustion engine. Agriculture equipment, by its nature, is operated remote to
the general public and with minimal personnel in attendance. The equipment is
not subject to excessive heat or multi-passenger situations in normal operation.
The MAWP difference between 250 and 312 severely limits the availability
of components for use both in and downstream of the container. For large
demand systems, most regulators, shutoff valves, and piping system
components currently in use are rated for 250 psig not 312 psig.
A literature search has been completed and no research has been found to
indicate an increased risk from fires by the reduced MAWP in this type of
application.
Committee Statement: The Committee Action on 58-40 (Log #58)
accomplishes the intent of the proposal.
________________________________________________________________
(6.22.3.8)
________________________________________________________________
Recommendation: Insert new text as follows:
6.22.3.8 The container liquid withdrawal opening used with vehicle fuel
dispensers and dispensing stations shall be equipped with one of the following:
(1) An internal valve fitted for remote closure and automatic shutoff using
thermal (fire) actuation.
(2) A positive shutoff valve that is located as close to the container as practical
in combination with an excess flow valve installed in the container, in addition
to an emergency shutoff valve that is fitted for remote closure and installed
down stream in the line as close as practical to the positive shutoff valve.
6.22.3.9 An identified and accessible remote emergency shutoff device for
either the internal valve or the emergency shutoff valve listed above shall be
installed not less than 3 ft or more than 100 ft from the liquid transfer point.
6.22.3.10 Emergency shutoff valves and internal valves that are fitted for
remote closure as required in this section shall be tested annually for proper
operation.
Substantiation: Remote closures with thermal actuation are recognized by the
industry and NFPA 58 as important devices for providing a safe means for
shutting off product releases in the event of an emergency. Generally,
dispensers are located in public areas. Equipping dispenser stations with remote
shutoffs fitted with thermal actuation will provide an additional level of safety
for dispensers. The requirement also requires testing to verify that the shutoff
devices remain in good operating condition.
FREDENBURG, R.: This requirement should be made retroactive with a
reasonable lead time. The safety improvement of this new requirement is
significant. Making all sites comply will significantly improve safety and make
it easier for an inspector to determine if a site is in compliance. (New
requirements not made retroactive make it difficult to determine the code of
record for sites that have little or no documentation of when they were
installed.) There are some very old dispensing sites out there. These sites
should be brought up to date.
MCTIER, S.: In 6.22.3.8(2) in the second line substitute “plus” for “in
addition to”.
________________________________________________________________
(6.23.3)
________________________________________________________________
Recommendation: Modify the wordings in this section as indicated below:
6.23.3.2 The modes of fire protections shall be specified in a written product
release prevention and incident preparedness review Fire Safety Analysis .
6.23.3.6 Where a written fire safety analysis exists, an incident prevention
review additional analysis shall not be required.
6.23.3.7 If in the preparation of the incident prevention review Fire Safety
Analysis it is determined that a hazard to adjacent structures exists that
exceeds...
Substantiation: a) The principal hazard of concern in a propane plant is
occurrence of fire due to releases of the product. All analyses in this regard are
geared towards reducing or eliminating incidents of fire. No other incident has
any significant consequence to the industry.
b) The terminology of “incident preparedness” in NFPA 58, 2004 edition is
vague and does not specify the incidents for which the preparations need to be
made for.
c) The expression “Fire Safety Analysis” has been in NFPA documents since,
at least, the 1995 edition. The industry has become familiar with this term (as
opposed to the terminology in the 2004 edition) and has no problems with the
expression “Fire Safety Analysis.” There have not been any complaints that the
use of this terminology in the NFPA documents has in any way hurt the
industry economically or politically.
d) The Fire Safety Analysis (“FSA”) manual published in mid 2004 to aid the
industry in complying with the requirements of section 6.23.3 of 2004 edition
of NFPA 58 has been well received by the industry. The industry has had no
complaints on either the title of the manual or the terminology “Fire Safety
Analysis.” The terminology has been easy to use and reference. The FSA
Manual has become an essential aid for the industry in meeting the
requirements of this section and the manual is being widely used. Any change
to the title of the manual will result in significant confusion in the minds of
people familiar with the manual and the requirements of NFPA 58 in relation to
analyzing the fire safety issues.
e) Overall, the modification made to NFPA 58, 2004 edition in the title of the
analysis required for protection compared to that specified in all previous
editions was unnecessary, and a bad idea. It seems to have provided fix to a
problem that did not exist. The system was certainly not broken requiring such
a fix.
Committee Statement: The committee believes that the change made in 58112 (Log #115) accomplishes the intent of the proposal.
STANNARD, JR., J.: I have serious reservations regarding the issuance of
the FSA Manual by the NFPA and I also question some of the material included
within that manual. Therefore, I will abstain from voting on issues involving
that manual.
58-26
NFPA 58
________________________________________________________________
(6.23.3)
________________________________________________________________
6.23.3* Protection of ASME Containers.
6.23.3.1 Fire protection shall be provided for installations with and aggregate
water capacity of more than 4000 gal (15.1 m3) and of ASME containers on
roofs.
6.23.3.2 The modes of fire protection shall be specified in a written fire
safety analysis product release prevention and incident preparedness review .
6.23.3.3* The analysis review shall be submitted by the owner, operator,
or their designee to the authority having jurisdiction and local emergency
responders.
6.23.3.4 The analysis review shall be updated when storage capacity or
transfer system is modified.
6.23.3.5 A An analysis review shall be an evaluation of the total product
control system, such as the emergency shutoff and internal valves equipped for
remote enclosure and automatic shutoff using thermal (fire) actuation pullaway
protection, where installed, and the optional requirements of Section 6.24.
6.23.3.6 Where a written fire safety analysis exists, an incident prevention
review shall not be required.
6.23.3. 7 6 If in the preparation for the fire safety analysis incident
preparedness review it is determined that a hazard to the adjacent structures
exists that exceeds the protection provided by the provisions of the code,
special protection shall be provided in accordance with 6.23.5.
National Fire Protection Association and the National Propane Gas Association
and published the “Fire Safety Analysis Manual for LP-Gas Storage Facilities”
that manual.
________________________________________________________________
(6.23.3.2)
________________________________________________________________
6.23.3.2 The modes of fire protection shall be specified in a written product
release prevention and incident preparedness review for new installations and
for existing installations which have an aggregate water gallon capacity of
more than 4000 gallons (15.1 m3) and of ASME containers on roofs.
Substantiation: This modification will clarify the intent of the requirement
for the “product release prevention and incident preparedness review”. In the
NFPA 58 - 2001 edition, Section 3.2.10, the Code states that the former Fire
Safety Analysis was intended to cover both new and existing installations. In
the NFPA 58 - 2004 edition, Section 6.23.3.2 this portion of the paragraph was
deleted. State propane gas associations and code enforcement officials have
questioned the intent of the requirement. Under NFPA 58 - 2004 Section 1.4.2
the Code excludes facilities which were approved for construction prior to the
effective date of the Code.
Committee Statement: The committee believes that the intent is clear.
MAHRE, B.: This proposal was intended to state the requirements to have
a written fire protection plan for ASME containers of more than 4000 gallons.
Without this addition, the present wording is interpreted to be required on only
new installations.
________________________________________________________________
(6.24.2)
________________________________________________________________
Recommendation: 6.24.2 Change the title of this subsection to “Spacing
Requirements for Underground and Mounded ASME Containers”.
Substantiation: Changing the title to specify “underground and mounded
ASME containers” makes the title more “user friendly” as the subsection only
applies to “underground and mounded ASME containers”.
________________________________________________________________
(6.24.2.3)
________________________________________________________________
6.24.2.3 No part of an underground or mounded ASME container shall be
less than 10 ft (3 m) from a building or line of adjoining property that can
be built upon. and no part of a mounded ASME container that is installed
above grade shall be less than 5 ft (1.5 m) from a building or line of adjoining
property that can be built upon.
Substantiation: This modification will clarify how measurements for storage
tank separation are structured. This wording will coincide with the proposal to
change 6.3.4.2. This paragraph, as listed also conflicts with 6.24.2.1.
Delete 6.24.2.3.
Committee Statement: The intent of the proposal is accomplished with
deletion of the paragraph.
MCTIER, S.: See My Explanation of Abstention on 58-66 (Log #11).
________________________________________________________________
(6.25)
________________________________________________________________
NOTE: This proposal appeared as Comment 58-181 (Log # 166) which
Submitter: Samuel E. McTier, McTier Supply Co. / Rep. NPGA
6.25 Alternate Provisions for Installation of ASME Containers.
6.25.1 Scope. Section 6.25 applies to alternate provisions for the location and
installation of underground and mounded ASME containers that incorporate the
use of redundant fail-safe product control measures and low emission transfer
concepts for the purpose of enhancing safety and to mitigate distance and
special protection requirements
Substantiation: The words “underground and mounded” have been deleted
because these alternative provisions cover all ASME containers including
aboveground containers.
________________________________________________________________
58-117 Log #116c Final Action: Reject
(7.2.1.4)
________________________________________________________________
7.2.1.4 Transfer personnel shall know, understand and be capable of
implementing Liquid Nitrogen fire control, control of spillage, leakage and
dealing with pipe breakage, cracking and personnel safety while implementing
these techniques.
and valves.
58-27
NFPA 58
________________________________________________________________
(7.2.2.5 and 7.2.2.6)
________________________________________________________________
7.2.2.5 Valve outlets on cylinders of 108 lb (49 kg) water capacity [nominal
45 lb (20 kg) propane capacity] or less shall be equipped with an effective seal,
such as a plug, cap, listed quick closing coupling or a listed quick-coupling
device quick-connect coupling . Where seals are used they shall be in place
whenever the cylinder is not connected for use.
7.2.2.6 Valve seals shall be in place whenever the cylinder is not connected
for use.
Substantiation: This addition will clarify the intent of the use of a valve outlet
seal to be used on cylinders of 45 lb of propane or less. The present standard
does not apply to the larger capacity cylinders, i.e., nominal 60#, 100# and
420#. In several instances the regulatory officials and court systems have cited
consumers and marketers for unplugged openings on 100# propane cylinders.
Accept the proposal and add a new A.7.2.2.5.
A.7.2.2.5 Examples of an effective seal are a plug, cap, listed quick closing
coupling.
Committee Statement: The proposal is accepted and the examples are
relocated to Annex A.
MCTIER, S.: Change “quick-coupling device” to “listed quick-connect
coupling”. This term is used in other places in the code such as 6.17.3.6(A).
________________________________________________________________
(7.2.2.8)
________________________________________________________________
Submitter: Susan DeMeules, Colorado Department of Labor
7.2.2.8 Containers shall be filled only after determination that they comply
with the design, fabrication, inspection, marking, and requalification provisions
of this code. ASME containers manufactured in compliance with earlier
editions of this code and having different marking requirements may also be
filled. For filling purposes only, the following nameplate data must be legible:
[From 5.2.8.3(C)]
(1) Name and address of container supplier or trade name of container, and;
(2) ASME Code symbol, and;
(3) MAWP in pounds per square inch, or;
(4) The wording “This container shall not contain a product that has a vapor
pressure in excess of psig at 100°F.
ASME containers with legible manufacturer’s name and serial number may
be filled when the required data is legible on a copy of its Manufacturer’s Data
Report affixed to the container in the vicinity of the original nameplate.
Substantiation: The data above determines if and how a tank is filled. The
other data is not essential to determine the integrity of the tank and whether it
should be filled. It is common for nicks and scrapes to render some nameplate
data illegible but this problem is not serious and should not be cause to remove
a tank from service.
Committee Statement: The committee believes that this subject should be
covered by local interpretation or rule.
________________________________________________________________
(7.2.2.10(2))
________________________________________________________________
of NFPA 58:
Section Number:
7.2.2.10(2) - “The minimum design maximum allowable working pressure
for ASME containers...”
________________________________________________________________
(7.2.3)
________________________________________________________________
Recommendation: Add a new Section 7.2.3.9 to NFPA 58 to read as follows:
7.2.3.9 Where cargo tank vehicles are filled from other cargo tank vehicles or
cargo tanks the following requirements shall apply.
(1) Transfer between cargo tanks or cargo tank vehicles where one is used as
a bulk plant shall be temporary installations that comply with 4.3.2, 6.16.1,
6.16.2, 6.16.5, 6.16.6, 6.16.7, and 7.2.3.1.
(2) Arrangements and operations of the transfer system shall be in accordance
with the following:
(a) The point of transfer shall be in accordance with Table 6.5.3.
(b) Sources of ignition within the transfer area shall be controlled during the
transfer operation as specified in 7.2.3.2.
(c) Fire extinguishers shall be provided in accordance with 6.23.4.2.
(3) Cargo tanks shall comply with the requirements of 7.2.2.8.
(4) Provisions designed to either prevent a pullaway during a transfer operation
or stop the flow of products from both cargo tank vehicles or cargo tanks in the
event of a pullaway, shall be incorporated.
(5) An off-truck remote shut off device meeting 49CFR 173.315(n)
requirements that is installed on the cargo tank vehicle unloading the product,
shall satisfy the requirements of 7.2.3.9 (4).
(6) Cargo tank vehicle LP-Gas transfers that are for the sole purpose of testing,
maintaining or repairing the cargo tank vehicle shall be exempt from the
requirements of 7.2.3.9 (1).
Substantiation: Product transfers between both cargo tank vehicles or cargo
tanks are occurring in the United States. This practice involves the transfer
of product from one cargo tank vehicle or cargo tank to another cargo tank
vehicle. Both cargo tank vehicles and cargo tanks are being used as an
alternative to fixed storage.
This specific practice is not addressed by NFPA 58. However, applicable
provisions addressing product transfer currently in the code have been
referenced. This proposal provides for product transfer in order to perform
testing, repair and maintenance that may require the cargo tank to be emptied
and purged prior to performing the work.
KING, J.: The “substantiation” accompanying this proposal states “both
cargo tank vehicles and cargo tanks are being used as an alternative to fixed
storage.” This proposal implicitly sanctions this practice, which ought to
instead be prohibited except: 1) in declared emergencies, and then only for
the duration of the emergency, or 2) as required for testing, maintenance or
repair of equipment. The proposal also provides for transfer of product without
the same degree of protection against an uncontrolled discharge of product
provided by a properly installed bulkhead and emergency shutoff valves.
Section 4.3.2, which is referenced in the proposal currently limits the maximum
installation period for temporary installations is 6 months, but proposal 58-17
if adopted would change this to 12 months. This is not in the best interest of
safety. It is also questionable if the provisions of Section 7.2.3.2, which are
referenced in the proposal, would provide adequate protection against ignition
in the event of an uncontrolled product discharge.
MORTIMER, F.: This proposal would allow a practice that should instead be
eliminated. Dealers using this type of storage are cutting corners and should
not be encouraged.
________________________________________________________________
58-122 Log #116d Final Action: Reject
(7.3.2.3)
________________________________________________________________
7.3.2.3 Purging of vessels done using Nitrogen gas will prevent Oxygen
combination with residue, thus preventing explosions in light mix
environments.
and valves.
58-28
NFPA 58
________________________________________________________________
(7.3.2.5 (New) )
________________________________________________________________
Consumer Services
Recommendation: Add a new section to read as follows:
Venting of containers and burning of LP-Gas in containers shall be allowed
only when the activity is attended and carefully monitored so adjustments can
be made if conditions change.
Substantiation: Earlier editions of this code implied attendance of the activity
to make adjustments if the conditions changed. The wording was “controlled
conditions.” The activity cannot be controlled if there is nobody in attendance.
There have been numerous times when we have received calls from emergency
responders who responded to a “leak” at a bulk plant. It turned out in most of
those calls that several containers had been opened to allow the containers to
vent gas overnight. With the wind dying down or other changes in climactic
conditions, the dispersion of the product changed. With nobody present to
monitor the releases, there was no way to make adjustments. Conditions were
not being controlled. It is conceivable that under certain conditions that a
flammable mixture could result. Even if it does not, concentrations strong
enough to be noticed by neighbors cause animosity with those neighbors and
cause emergency responders to dispatch expensive equipment for a condition
that does not warrant it and that could have been prevented by simple
monitoring of the activity by trained personnel.
7.3.2.5 Venting of containers and burning of LP-Gas from containers shall be
attended.
FREDENBURG, R.: We failed to make a change in Section 7.3.2.1 that goes
along with this proposal. It should read “...in accordance with 7.3.2.2 through
7.3.2.4 7.3.2.5. ”
MAXON, R.: This paragraph starts with “The venting of containers and
burning of LP Gas in containers...” is not correct. The LP-Gas is not burned in
the container. This should be corrected to provide the proper wording.
indoors.
________________________________________________________________
58-125 Log #CP25d Final Action: Accept
(7.4.3.1)
________________________________________________________________
7.4.3.1 The volumetric method shall be limited to the following containers
that are designed and equipped for filling by volume:
(1) Cylinders of less than 200 lb (91 kg) water capacity that are not subject to
DOT jurisdiction.
(2) Cylinders of 200 lb (91 kg) water capacity or more
(3) Cargo tanks or portable tanks complying with DOT specifications MC-330,
MC-331,
or DOT 51
(4) ASME and API-ASME containers complying with 5.2.1.1 or 5.2.4.2.
Substantiation: Cargo tanks or portable tanks may have other specifications.
________________________________________________________________
(7.4.3.2(A))
________________________________________________________________
7.4.3.2(A)* If a fixed maximum liquid level gauge or a variable liquid level
gauge without liquid volume temperature correction is used, the liquid level
indicated by these gauges shall be computed based on the maximum permitted
filling limit when the liquid is at 40°F (4°C) for aboveground containers, at
50°F (10°C) for underground containers, or -10°F (-23°C) for composite
cylinders.
The change to 7.4.3.2 introduces another safety provision for composite
cylinders, which is to limit the filling density to a stricter standard than that
used for other containers. This provision will help ensure that cylinders filled
in cold temperatures will not experience a “liquid full” condition when brought
indoors and exposed to warmer temperatures.
________________________________________________________________ This proposal seeks a change to the code to allow propane fueled cabinet
(7.4.2)
________________________________________________________________ Cabinet heaters have been allowed by European codes for many years and are
Recommendation: 1. Revise 7.4.2 to read:
7.4.2 LP-Gas Capacity of Containers.
7.4.2.1 The capacity of an LP-Gas container shall be determined either by
weight in accordance with 7.4.2.2 or 7.4.2.3 or by volume in accordance with
7.4.2.3 7.4.3.4.
outages.
7.4.2.2* The maximum filling limit by weight of LP-Gas in a metal container This proposal is based on the recognition that significant advancements have
shall be in accordance with Table 7.4.2.2.
7.4.3.3 The maximum filling limit by weight of LP-Gas in a composite cylinder appliance connector design, filling technology, industry regulation and the
shall be 39% of the water capacity of the cylinder.
7.4.2.3* 7.4.2.4 The maximum permitted volume of LP-Gas in a container shall of the use of cabinet heaters indoors.
be in accordance with Table 7.4.2.3(a), Table 7.4.2.3(b), and Table 7.4.2.3(c)
7.4.2.4(a), Table 7.4.2.4(b), and Table 7.4.2.4(c) .
2. Revise the Title of Table 7.4.2.2 to read:
Table 7.4.2.2 Maximum Filling Limit by Weight of Metal LP-Gas Containers are being developed by the Gas Appliance Manufacturers Association (GAMA)
(Percent of Marked Water Capacity in Pounds).
Substantiation: The use of composite cylinders has been added to NFPA 58 in Approval of this proposal will greatly benefit the public by resulting in:
other actions. This change recognizes that the fill level of composite cylinders
used indoors with cabinet heaters is reduced to 75% to provide additional
safety.
KING, J.: This proposal supports a change in the Code to permit the use of
composite cylinders in portable unvented cabinet heaters inside residences.
This type of use is not in the best interest of safety, and should not be
approved. Supporting changes of this type should also not be approved.
KING, J.: Certain provisions in this proposal support a change in the Code to
cylinders to be used inside of buildings, which is an increase of 10 times the
permit the use of composite cylinders in portable unvented cabinet heaters
currently allowed limit.
inside residences. This type of use is not in the best interest of safety, and
should not be approved. Supporting changes of this type should also not be
CZISCHKE, R.: UL supports the 75% fill level for composite cylinders to
approved.
support safe use of composite cylinders brought indoors for emergency and
other applications presently permitted by the code. As noted in comments for
58-6, 58-51 and 58-100, UL does not support cabinet heaters at this time.
currently allowed limit.
58-29
NFPA 58
CZISCHKE, R.: See My Affirmative with Comment on 58-124 (CP21).
________________________________________________________________
(8.3.2.1 Exception (New) )
________________________________________________________________
Submitter: Steven T. Gentry, Worthington Cylinder Corp.
Recommendation: Add new text to read:
8.3.2.1 The quantity of LP-Gas in cylinders stored or displayed shall not
exceed 200 lb (91 kg) in buildings frequented by the public.
Exception: Where cylinders are stored or displayed awaiting resale in a
building frequented by the public, the quantity of LP-Gas shall not exceed an
aggregate weight of 1000 lb (454 kg), provided the building is fully protected
throughout by an approved sprinkler system which at a minimum meets the
requirements of NFPA 13 for Ordinary Hazard (Group 2). Additionally, the
Sales area shall have a minimum sprinkler protection with a sprinkler density
on the Sales Floor of 0.300 gallons per minute over the most remote 2000
square foot area and 250 gallons per minute hose stream allowance.
Substantiation: Problem:
The restriction of 200# (91 kg) of LP-Gas in 2.7-pound water capacity
cylinders (nominal 1-pound LP-Gas capacity) does not permit retail stores and
mass merchandisers to maintain enough inventories to service their customers.
The out of product occurrences are not limited to when disasters strike and
emergency relief is immediately at need. Out of product occurrences nearly
every weekend.
Substantiation:
As stated in the “LP-Gas Code Handbook”, the history of this section has
recognized the cylinder limit has been too restrictive. In 1961, this section was
written pertaining to hand held fuel type cylinders. According to the “LP-Gas
Code handbook”, in 1965, there was no limit. Through the years NFPA has
determined the need to increase the storage limit of this type of cylinder. The
Code has not been revised since at least 1972 and needs revision based on the
popularity of this type cylinder for the camping and outdoor grilling arenas.
The Canadian SAFETY AND CONSUMER STATUTES ADMINISTRATION
ACT 1996 and THE TECHNICAL STANDARDS AND SAFETY ACT 2000
has recognized the need for changing the permissible quantity of these
cylinders in building frequented by the public in Canada. Effective September
17, 2002, the Propane Storage and Handling Code issued a modification that
permits up to 1000 pound (454 kg) storage), provided the building is fully
protected throughout by an approved sprinkler system which, at a minimum,
meets the requirements of NFPA 13 for Ordinary Hazard (Group 2).
Under the 1999 and 2002 editions of NFPA 13, the required sprinkler
densities for the storage of Class I-IV commodities on the Sales Floor is a
minimum of 0.200 gallons per minute over the most remote 1500 square foot
area and a 250 gallons per minute hose stream allowance. However, for the
added quantity of storage regulated in this proposal, we require utilizing
sprinkler protection with a sprinkler density on the Sales Floor with a minimum
of 0.300 gallons per minute over the most remote 2000 square foot and a 250
gallon per minute hose stream allowance to enhance protection.
Add new text to read:
8.3.2.1 The quantity of LP-Gas in cylinders stored or displayed shall not
exceed 200 lb (91 kg) in buildings frequented by the public.
8.3.2.2 Where cylinders are stored or displayed awaiting resale in a building
frequented by the public, the quantity of LP-Gas shall not exceed an aggregate
weight of 1000 lb (454 kg), provided the following conditions are met:
1. The building is fully protected throughout by an approved sprinkler system
which at a minimum meets the requirements of NFPA 13 for Ordinary Hazard
(Group 2).
2. The Sales area shall have a minimum sprinkler protection with a sprinkler
density on the Sales Floor of 0.300 gallons per minute over the most remote
2000 square foot area and 250 gallons per minute hose stream allowance.
Committee Statement: Accepted, and the format is revised.
CZISCHKE, R.: Propane, having a very high heat of combustion value,
represents a severe fire hazard for sprinkler systems to control. There has been
no testing or data provided to justify an increase in magnitude of 5 times the
current propane storage limit for buildings frequented by the public. In the
absence of such supporting information, UL cannot support this proposal.
KING, J.: According to the LP Gas Handbook, “small LP gas cylinders can be
very dangerous in warehouse fires because they have been known to “rocket”
and spread the fire laterally.” The storage of up to 1000 pounds of LP gas in
one location in a building frequented by the public therefore appears unsafe.
Fire service personnel are also not in agreement that automatic sprinkler
protection as proposed would adequately control the hazard.
MORTIMER, F.: Just because there are current violators of the code is not a
good reason to change the code. The current limit is adequate.
STANNARD, JR., J.: I believe that proposed quantities of LP-Gas that would
be allowed for storage or display in buildings frequented by the public may be
excessive. I also believe that this matter should be considered as a joint effort
of the Life Safety Committee and the LP-Gases Committee and there should be
a consensus of the two committees.
MCTIER, S.: Agree with the concept but have some recommended editorial
changes for increased clarity of the requirement as follows:
“8.3.2.1 The quantity of LP-Gas in cylinders stored or displayed i n buildings
frequented by the public shall not exceed 200 lb (91 kg) in buildings
frequented by the public. 8.3.2.2 Where cylinders are stored or displayed
awaiting resale in a building frequented by the public, the quantity of LP-Gas
shall not exceed an aggregate weight of 1000 lb (454 kg) provided the
following conditions are met: 1. The unless the building is fully protected
throughout by an approved sprinkler system which at a minimum meets the
requirements of NFPA 13 for Ordinary Hazard (Group 2) and where the
quantity of LP-Gas shall not exceed an aggregate weight of 1000 lb (454 kg).
8.3.2.2 The sales area in such a building shall have a minimum sprinkler
protection system with a sprinkler density on the sales floor of 0.300 gal/min
over the most remote 2000 ft 2 area and shall have a 250 gal/min hose stream
allowance.
________________________________________________________________
(8.3.5)
________________________________________________________________
8.3.5 Storage Within Residential Buildings. Storage of cylinder s within a
residential building, including the basement or any storage area in a common
basement storage area in of a multiple-family building s and attached garages
attached or detached, shall be limited to cylinders each with a maximum water
capacity of 2.7 lb (1.2 kg) and shall not exceed 5.4 lb (2.4 kg) aggregate water
capacity for smaller cylinders per each living space area.
Substantiation: This modification of wording will assist the AHJ of the intent
of not allowing consumers to store unconnected and stored cylinders in
residential buildings which would include garages. Over the past years the fire
officials raised their concerns of propane cylinders stored in garages. The
manufacturer attached labels to the cylinders to instruct the consumer not to
store the cylinders in a garage. NPGA has produced informational materials
and warning labels to instruct the consumer using small cylinders not to store
extra cylinders in garages. In all of these labels and publications there is no
attempt to differentiate between attached and unattached garages.
Revise text to read:
8.3.5 Storage Within Residential Buildings. Storage of cylinder s within a
residential building, including the basement or any storage area in a common
basement storage area in of a multiple-family building s and attached attached
or detached garages, shall be limited to cylinders each with a maximum water
capacity of 2.7 lb (1.2 kg) and shall not exceed 5.4 lb (2.4 kg) aggregate water
capacity for smaller cylinders per each living space area.
FREDENBURG, R.: Do we need to define “living space area”? Is each room
of a house a living space area? Each floor? Each family’s space? I would not
think that we would allow each room in a house to have 2 cylinders. But that’s
how “living space area” could be interpreted.
________________________________________________________________
(8.4.1.2)
________________________________________________________________
Submitter: John J. Anicello, Airgas Inc
Recommendation: Add a new paragraph 8.4.1.2.1 as follows:
The distances in Table 8.4.1.2 may be reduced to 0 where a 2-hour fire
resistive protective structure made of noncombustible materials is provided that
breaks the line of sight of the storage and the building. For buildings with
exterior walls rated 2-hour fire resistance and constructed of noncombustible
materials not provided with eaves over the storage the exterior wall is allowed
in lieu of a protective structure to reduce the distance to 0.
Substantiation: Part I: The current prescribed distances make no allowances
for a common control applied in the compressed gas industry and user
community to allow encroachment of flammable gases to exposures. Protective
structures are common provisions codified with fire prevention codes and
standards.
Part 2: The current prescribed distances make no allowances for
encroachment on buildings construction. Certainly a wooden building is a
greater exposure than a rated noncombustible constructed one. A 2-hour fire
resistive noncombustible exterior wall provides the equivalent protection as a
protective structure described in Part I above.
Add the proposed paragraph numbered 8.4.1.3.
Committee Statement: Accepted and relocated.
58-30
NFPA 58
________________________________________________________________
(8.4.2.1)
________________________________________________________________
Submitter: Dave Maraman, Cage-Tech, Inc.
(2) A lockable ventilated metal locker or rack that prevents tampering with
valves and pilferage of the cylinders. Heavy steel frame construction that
supports shelves, door, side & Rear panels of molded reinforced industrial
(Class 1 fire rating) fiberglass grating or metal.
Substantiation: The use of reinforced molded industrial fiberglass grating for
panels and shelves improves strength, safety, durability, life expectancy, and
appearance (opposed to the expanded metal and flat steel commonly used for
propane cages.) This fiberglass does not support flame (Flame Retardant, Class
1), does not promote sparks and will not rust. Due to it’s superior composition
and designed strength the fiberglass should reduce tampering and theft.
The propane gas industry is looking to us to produce a better cage. One that
is easier to ship, easier to handle, lasts longer yet looks attractive. Combining
the molded industrial fiberglass grating with heavy-duty strut steel frame
provides all this, plus assures safety and strength. Although safety and strength
are our first consideration we must note that the rising cost of steel will force
propane companies to keep older cages in service beyond their intended and
useful life. Fiberglass will help offset the rising cost of steel encouraging
propane companies to replace the older cages sooner.
1. Revise 8.4.2.1 as follows:
8.4.2.1 A lockable ventilated enclosure of metal exterior construction.
2. Add a new A.8.4.2.1 to read:
A.8.4.2.1 The shelves should be made of any material with a flame spread
rating of less than 25, of sufficient strength to support the cylinders.
Committee Statement: Accepted with editorial revisions, and a new annex
________________________________________________________________
(8.4.2.2)
________________________________________________________________
Submitter: Eddie Phillips, Southern Regional Fire Code Development
Committee
8.4.2.2 Approved protection against vehicle impact shall be provided in
accordance with good engineering practice where vehicle traffic is expected at
the location.
Substantiation: There are several varying methods for providing vehicle
protection. It is important that the AHJ have final approval of the method used.
The AHJ will normally have the best knowledge of the circumstances and
vehicle traffic that can be expected at a certain location in the jurisdiction.
Committee Statement: The committee believes that this subject should be
dealt with locally.
________________________________________________________________
(8.6 (New) )
________________________________________________________________
Submitter: Dennis Blong, Propane Vend LLC/Dekko Inc.
8.6 Self Service Cylinder Dispensing Device.
8.6.1 Self service cylinder dispensing devices shall comply with Section 8.4
for placement distance, vehicle protection and fire protection of the control unit
and lockers.
8.6.2 The locker construction shall comply with 8.4.2.1(2) for design criteria.
8.6.3 The lockers shall be designed so that cylinders are stored in the vertical
position only.
8.6.4 The locker latch striker shall be made of non-sparking material.
8.6.5 The control unit of the device shall be installed in accordance with the
electrical equipment requirements of 6.20.2.
8.6.6 Multilingual safety placards or warning signs shall be installed in each
locker instructing customer to close service valve prior to placing empty
cylinder into locker.
8.6.7 Exchange instructions and safety information shall be given to the
customer prior to the customer gaining access to exchange cylinder lockers.
Substantiation: The proposed addition of the new language and section is to
address a new method of exchanging cylinders not covered in the existing
standard. The goal is to provide code, standards, and recommended practices
for the safe installation and operation of a self serve exchange cabinet, in
conjunction with applicable federal, state, and local laws and regulations. This
guidance will provide regulatory officials, installers and maintainers a uniform
reference on which to base decisions and further advance NFPA 58 as a
document that may be referenced in the federal regulations as an allencompassing propane standard.
Committee Statement: This subject is adequately covered in Section 8.4.1.
________________________________________________________________
58-133 Log #116f Final Action: Reject
(9.1.2.5(C))
________________________________________________________________
9.3.2.5(C) Open and Closed vehicles routinely used in transport of petroleum
products or other flammables shall be equipped with fixed Liquid Nitrogen fire
control piping.
and valves.
________________________________________________________________
58-134 Log #116e Final Action: Reject
(9.1.2(5))
________________________________________________________________
9.1.2(5) Transport vehicles will be equipped with fixed Liquid Nitrogen fire
control piping to hasten fire protection in emergencies.
and valves.
________________________________________________________________
58-135 Log #CP25e Final Action: Accept
(9.3.3.2)
________________________________________________________________
9.3.3.2 Portable containers shall be constructed in accordance with Section
5.7 and equipped in accordance with Section 5.3 5.2 for portable use or and
shall comply with DOT portable tank specifications for LP-gas service.
Substantiation: Cargo tanks or portable tanks may have other specifications.
MCTIER, S.: In the first line change “Section 5.7” to “Section 5.2” and in the
second line change “Section 5.2” to “Section 5.7”.
________________________________________________________________
(9.3.4)
________________________________________________________________
9.3.4 Transportation of Portable Storage Containers.
ASME containers to be used as portable storage containers including
movable fuel storage tenders and farm carts for temporary stationary service
58-31
NFPA 58
(normally not more than 12 months duration at any location) when moved shall
contain a heel volume of 5 percent or less of the water capacity of the
container, except for agricultural purposes where allowed in a DOT exemption.
Substantiation: To recognize in the code that DOT has made exemptions for
farm carts in certain cases.
MCTIER, S.: In the fourth line of the text change “heel” to “liquid”.
________________________________________________________________
(9.4.2.3)
________________________________________________________________
9.4.2.3 Liquid hose of 1-1/2” (nominal size) and larger and vapor hose of 11/4” (nominal size) or larger shall be protected with an internal valve that is
fitted for remote closure and automatic shutoff using thermal (fire) actuation.
Substantiation: This proposal addresses the required manual shutoff capability
of the internal valve at the installed location.
________________________________________________________________
58-138 Log #59d Final Action: Accept
(9.4.3.7)
________________________________________________________________
9.4.3.7 Flexible hose connectors shall comply with the following:
(1) Flexible hose connectors assembled from rubber hose and couplings shall
be permanently marked to indicate the date of installation of the flexible hose
connector.
(2) The flexible hose portion of the connector shall be replaced...each day.
(3) The rubber flexible hose portion of flexible connectors shall be replaced
whenever a cargo tank unit is remounted on a different chassis, or whenever
the cargo tank unit is re-piped, if such re-piping encompasses that portion of
piping in which the connector is located.
inches, are successfully being used in areas subject to seismic forces for
piping system flexibility. The additional length is important in providing
flexibility between a container and the piping system to decrease the chance of
FREDENBURG, R.: The way the proposal was abbreviated could be
misleading. If one misses the “...” in (2) he could think that the hose portion
shall be replaced each day. Please be careful to not abbreviate this in the
preprint.
________________________________________________________________
(9.4.6.1)
________________________________________________________________
9.4.6.1 Painting of cargo tank vehicles shall comply with 49 CFR, Part 195 .
Substantiation: The reference to Part 195 is not correct, and not needed.
________________________________________________________________
58-140 Log #116g Final Action: Reject
(10.2.1.5)
________________________________________________________________
10.2.1.5 Any space or building routinely containing petroleum or flammable
cylinders or other storage containment in quantities over one Liquid Propane
tank shall be fitted with fixed Liquid Nitrogen fire control equipment which
allows fire department to apply Liquid Nitrogen to any crisis occurring at the
location.
and valves.
________________________________________________________________
58-141 Log #116h Final Action: Reject
(10.3.2.6(4))
________________________________________________________________
10.3.2.6(4) This space will be included in the fixed Liquid Nitrogen fire
control system.
and valves.
________________________________________________________________
(10.4)
________________________________________________________________
Consumer Services
Recommendation: Add a new section 10.4 with heading that reads “Electrical
Equipment” and text that reads “All electrical equipment and wiring installed
in a building or room in the scope of this chapter shall comply with 6.20.2.1
and 6.20.2.2.”
Substantiation: There is nothing in Chapter 10 that specifies the requirements
for electrical equipment and wiring in these buildings and structures. This will
resolve that omission.
Committee Statement: The Committee Action on 58-19 (Log #126) makes
this unnecessary.
58-32
NFPA 58
________________________________________________________________
(11.2)
________________________________________________________________
11.2 Each person engaged in installing, repairing, filling, or otherwise servicing
an LP-Gas engine fuel system shall be trained in the necessary procedures .”
Substantiation: The phrase “in the necessary procedures” is superfluous.
________________________________________________________________
58-144 Log #116i Final Action: Reject
(11.2)
________________________________________________________________
11.2 “...necessary procedures including use of portable Liquid Nitrogen crisis
control equipment.
and valves.
engine fuel containers for vehicles, industrial trucks, buses (including school
buses), recreational vehicles, and multipurpose passenger vehicles shall be
constructed with a design pressure of at least 312 psig.
11.3.3 Container Repairs and Alterations.
11.3.3.1 Containers that show excessive denting, bulging, gouging, or
corrosion shall be removed from service.
11.3.3.2 Repairs or alteration of a container shall comply with the
regulations, rules, or code under which the container was fabricated. Repairs or
alterations to ASME containers shall be in accordance with the National Board
Inspection Code.
11.3.3.3 Field welding shall be permitted only on saddle plates, lugs, pads, or
brackets that are attached to the container by the container manufacturer.
11.3.4 ASME Container Nameplates.
11.3.4.1* The markings specified for ASME containers shall be on a stainless
steel metal nameplate attached to the container, located to remain visible after
the container is installed.
(A) The nameplate shall be attached in such a way as to minimize corrosion
of the nameplate or its fastening means and not contribute to corrosion of the
container.
(B) ASME containers shall be marked with the following information:
(1) Service for which the container is designed (for example, underground,
aboveground, or both)
(2) Name and address of container supplier or trade name of container
(3) Water capacity of container in pounds or U.S. gallons
(4) MAWP in pounds per square inch
(5) The wording “This container shall not contain a product that has a vapor
pressure in excess of psig at 100°F” (See Table 5.2.4.2.)
(6) Outside surface area in square feet
(7) Year of manufacture
(8) Shell thickness and head thickness
(9) OL (overall length), OD (outside diameter), HD (head design)
(10) Manufacturer’s serial number
(11) ASME Code symbol
(12) Minimum design metal temperature ___°F at MAWP ____ psi
(13) Type of construction “W”
(14) Degree of radiography “RT___”
________________________________________________________________ 11.3.5 through 11.5.3 remain the same.
11.6 Piping, Hose and Fittings.
11.6.1 Pipe and Tubing.
(11.3)
________________________________________________________________ 11.6.1.1 Pipe shall be wrought iron or steel (black or galvanized), brass or
copper and shall comply with the following:
(1) Wrought-iron - ASME B36.10M, Welded and Seamless Wrought Steel
Recommendation: Make the following changes to NFPA 58:
Pipe
1. Delete current Sections 11.3 through 11.3.4 and all of Section 11.6.
(2) Steel pipe - ASTM A 53, Standard Specification for Pipe, Steel, Black and
2. Insert the following text in Sections 11.3 and 11.6.
Hot-Dipped, Zinc-Coated Welded and Seamless
11.3 Containers.
(3) Steel pipe - ASTM A 106, Standard Specification for Seamless Carbon
11.3.1* General.
Steel Pipe for High-Temperature Service
11.3.1.1 Containers shall be designed, fabricated, tested, and marked (or
(4) Brass pipe - ASTM B 43, Standard Specification for Seamless Red Brass
stamped) in accordance with the regulations of the U.S. Department of
Pipe, Standard Sizes
Transportation (DOT), the ASME Boiler and Pressure Vessel Code , Section
(5) Copper pipe - ASTM B 42, Standard Specification for Seamless Copper
VIII, “Rules for the Construction of Unfired Pressure Vessels,” or the APIPipe, Standard Sizes
ASME Code for Unfired Pressure Vessels for Petroleum Liquids and Gases ,
11.6.1.2 Tubing shall be steel, stainless steel, brass or copper (see 6.8.4 ) and
except for UG-125 through UG-136.
shall comply with the following:
11.3.1.2 Adherence to applicable ASME Code case interpretations and
(1) Steel tubing - ASTM A 539, Standard Specification for Electricaddenda that have been adopted and published by ASME 180 calendar days
prior to the effective date of this code shall be considered as compliant with the Resistance-Welded Coiled Steel Tubing for Gas Fuel Oil Lines
(2) Brass tubing - ASTM B 135, Standard Specification for Seamless Brass
ASME Code.
Tube
11.3.1.3 Containers fabricated to earlier editions of regulations, rules, or
(3) Copper tubing
codes listed in 5.2.1.1 and of the Interstate Commerce Commission (ICC)
(a) Type K or L - ASTM B 88, Specification for Seamless Copper Water Tube
Rules for Construction of Unfired Pressure Vessels , prior to April 1, 1967,
(b) ASTM B 280, Specification for Seamless Copper Tube for Air Conditioning
shall be permitted to be continued to be used in accordance with Section 1.4.
and Refrigeration Field Service
11.3.1.4 Containers that have been involved in a fire and show no distortion
11.6.2 Fittings for Metallic Pipe and Tubing.
shall be requalified for continued service before being used or reinstalled.
11.6.2.1 Fittings shall be steel, brass, copper, malleable iron, ductile (nodular)
(A) Cylinders shall be requalified by a manufacturer of that type of cylinder
iron.
or by a repair facility approved by DOT.
11.6.2.2 Pipe fittings shall have a minimum pressure rating as specified in
(B) ASME or API-ASME containers shall be retested using the hydrostatic
Table 11.6.2.2 and shall comply with the following:
test procedure applicable at the time of the original fabrication.
(1) Cast-iron pipe fittings shall not be used.
(C) All container appurtenances shall be replaced.
(2) Brazing filler material shall have a melting point that exceeds 1000°F
(D) DOT 4E specification (aluminum) cylinders involved in a fire shall be
(538°C).
11.3.1.5 A cylinder with an expired requalification date shall not be refilled
Table 11.6.2.2 Service Pressure Rating of
until it is requalified by the methods prescribed in DOT regulations.
Pipe, Tubing Fittings, and Valves
11.3.1.6 Cylinders shall be designed and constructed for at least a 240 psig
Service
Minimum Pressure
(1.6 MPag) service pressure .
Higher than container pressure
350 psig (2.4 MPag), or the
11.3.1.7 Cylinders shall be continued in service and transported in accordance
MAWP, whichever is higher, or
400 psig (2.8 MPag) WOG rating
with DOT regulations.
11.3.1.8 Engine fuel containers shall be of either the permanently installed or
LP-Gas
liquid,
or
vapor
at
operating
250 psig (1.7 MPag)
exchangeable type.
pressure over 125 psig and at or
11.3.2 Container Design Pressure .
below container pressure
11.3.2.1 ASME engine fuel and mobile containers shall have the following
minimum design pressure:
LP-Gas vapor at operating pressure
125 psig (0.9 MPag)
of 125 psig (0.9 MPag) or less
(1) 250 psig (1.7 MPag) or 312 psig (2.2 MPag) where required if
constructed prior to April 1, 2001.
(2) 312 psig (2.2 MPag) if constructed on or after April 1, 2001.
11.3.2.2 ASME containers installed as in enclosed spaces on vehicles and all
58-33
NFPA 58
11.6.2.3 Metal tube fittings shall have a minimum pressure rating as specified
in Table 11.6.2.2.
Substantiation: The correlations above are intended to make common sections
between Chapters 5 and 11 read as close to identical as possible. In the case of
piping and materials, however, this was not entirely possible because
polyethylene and polyamide materials are not permitted to be used in engine
fuel applications. The sections that are proposed for Chapter 11 are shown
below with the corresponding section from either Chapter 5 or current Chapter
11.
Section 11.3 (5.2); 11.3.1* (5.2.1); 11.3.1.1 (5.2.1.1); 11.3.1.2 (5.2.1.1 A);
11.3.1.3 (5.2.1.1 B); 11.3.1.4 (5.2.1.2); 11.3.1.4(D) (5.2.3.2); 11.3.1.5 (5.2.2.2);
11.3.1.6 (5.2.4.5); 11.3.1.7 (5.2.2.1); 11.3.1.8 (11.3.1.6); 11.3.2 (11.3.2);
11.3.2.1 (11.3.2 (1) &(2)); 11.3.2.2 (11.3.2(3)); 11.3.5 (11.3.3); 11.3.3.1
(11.3.3.3);
11.3.3.2 (5.2.1.5); 11.3.3.3 (5.2.1.6); 11.3.4 ((11.3.4); 11.3.4.1* (5.2.8.3); 11.6
(11.6); 11.6.1 (11.6.1, 5.8.3); 11.6.1.1 (5.8.3.1); 11.6.1.2 (5.8.3.2);
11.6.2 (5.8.4); 11.6.2.1 (5.8.4); 11.6.2.2 (5.8.4.1); Table 11.6.2.2 (Table
5.8.4.1): 11.6.2.3 (5.8.4.2).
MAXON, R.: This proposal has a number of inconsistencies that must be
reviewed and corrected. Examples are paragraph 11.3.1.3 that should state
“shall be requalified” in accordance with CGA Publication C-6 or Publication
C-6.3. Paragraph 11.3.1.4 is incorrect. Cylinders can be requalified by cylinder
requalifiers registered with USDOT. There is no time frame for requalification
for the proposed composite cylinders.
MCTIER, S.: Make the following changes as shown in Proposal 58-146 and
58-147.
11.3.1.4(D) Insert “or composite cylinders” between “cylinders” and
“involved”
11.3.2 Change “Container Design Pressure” to “Container Maximum Allowable
Working Pressure (MAWP)”.
Change “minimum design pressure” in the text to “MAWP”. Paragraph
11.3.2.1 is shown for the text but is a mistake as 11.3.2.1 does not show in the
code.
________________________________________________________________
(11.3, 11.4, 11.5, 11.6)
________________________________________________________________
of NFPA 58:
Section Number:
11.3.2 - Change title to read: “Container Maximum Allowable Working
Pressure”
“ASME engine fuel and mobile containers shall have the following minimum
design maximum allowable working pressure
11.3.4.3(4) - “(4) Design pressure Maximum allowable working pressure
(MAWP) in pounds per square in (psi)”
11.4.1.7(B) - “(B) The start-to-leak setting... relation to the design maximum
allowable working pressure (MAWP) of...”
11.5.1 - “Carburetion equipment... or for the design maximum allowable
working pressure (MAWP) of the container...”
11.5.2.3 - “Vaporizers subjected... or the design maximum allowable working
pressure (MAWP) of the container...”
11.6.2.4 - “Fittings used with... or the design maximum allowable working
pressure (MAWP) of the container...”
11.3.4.3 - Add to ASME Container nameplate (13) “MDMT”, (14) W, (15)
R.T.
MCTIER, S.: The following corrects the errors and eliminates the duplication
in these two proposals. The following has been reviewed and confirmed by
Greg McRae, Trinity Industries Inc.
11.3.2(c) 11.3.2(3) In the last line change “design pressure” to “MAWP”.
11.3.4.2(d) 11.3.4.3(4) Change “Design Pressure” to “MAWP in pounds per
square inch (psi)”.
11.3.4.3(6) Delete this as it covers tare weight that is not used in ASME engine
fuel containers.
11.4.1 11.4.1.2 Remove “working” in the first and third lines.
11.5.1 Rewrite as follows:
“11.5.1 Pressure
Carburetion equipment subject to a pressure of 125 psig (0.9 MPag) shall be
designed for a pressure rating of 250 psig (1.7 MPag) or for the MAWP of the
container where the MAWP of the container is greater than 250 psig (1.7
MPag).”
11.5.2.3 Rewrite as follows: “Vaporizers subjected to the MAWP of the
container shall have a pressure rating of 250 psig (1.7 MPag) or the MAWP of
the container where the MAWP of the container is greater than 250 psig (1.7
MPag).
11.6.2.4 Rewrite as follows: “ Fittings used with liquid LP-Gas or with vapor
LP-Gas at operating pressures over 125 psig (0.9 MPag) shall be designed for a
pressure rating of at least 250 psig (1.7 MPag) or the MAWP of the container
whichever is greater.
11.6.3.5 Rewrite as follows: “Hose assemblies after the application of
couplings shall be capable of withstanding a pressure of not less than 700 psig
(4.8 MPag). If a pressure test is performed, such assemblies shall be pressure
tested at 120% of the pressure rating [350 psig] (2.4 MPag) minimum of the
hose.
________________________________________________________________
(11-3.2, 11.3.3.1, 11.3.3.3, 11.3.4.2(D), 11.4.1.1, 11.5.1, 11.5.2.3, 11.5.2.4,
11.6.2.3 [8-2.2.1(e), 8.2.2.1 (f), 8.2.2.1(g), 8.2.2.3(4), 8.2.3(a), 8.2.4.1,
8.2.4.2(b), 8.2.4.2(c) 8.2.5.4(b), 8.2.5.5(a) 2, 8.2.6.7 Old])
________________________________________________________________
NOTE: This proposal appeared as Comment 58-237 (Log #241) which
Submitter: Greg McRae, Trinity Industries Inc
Recommendation: 11.3.2 - change “minimum design pressure” to “MAWP”
11.3.2(c): Change “design pressure” to “MAWP”
11.3.3.1 - Repairs shall be to the NBIC (National Board Inspection Code)
11.3.3.3 - Containers showing denting, bulging, gouging or excessive
corrosive shall be inspected and repaired, if necessary, to the NBIC code before
returning to service.
11.3.4.2(d) change “design pressure” to “MAWP”
add “Minimum Design Metal Temperature___(°f at MAWP ____psi”
add type of construction “W”
add degree of radiography “RT-_”
11.4.1.1-remove “working” in first line and second lines
11.5.1 - remove “working” in first and second lines.
change “design pressure” to “pressure rating”
11.5.2.3 - remove design and add pressure “rating”
line 4: change “where” to “when” and remove “design pressure” and change
to “pressure rating” 2 places
11.6.2.4 - change “design pressure’ to “pressure rating”
11.5.2.3 - change “working pressure” to “pressure rating” remove “design
pressure” and add “MAWP”
11.6.2.4- change “working pressure” to “pressure reacting”
11.6.3.3- change “operating pressure” to “pressure rating”
11.6.3.5 - change: Hose assemblies after the application of the connections,
shall be capable of withstanding a pressure of not less than 700 psig (4.8
Mpag). If a test is performed, such assemblies shall be leak tested at pressures
between the operating and 120 percent of the pressure rating [350 psig](2.4
Mpag) on the hose.
11.7.4.2 - change “(g)” to “(f)”
Substantiation: Editorial changes.
MCTIER, S.: See My Affirmative with Comment on 58-146 (Log #4).
________________________________________________________________
(11.3.7)
________________________________________________________________
11.3.7* Container Corrosion Protection. Engine fuel containers constructed of
steel shall be painted to retard minimize corrosion.
Substantiation: This is editorial to comply with the manual of style
recommended by NFPA.
The change to 5.2.3.1(c)(3) and to 11.3.7 from the word “retard” to the word
“minimize” clarifies that the paint is intended to prevent excessive corrosion
rather than just slow it and also standardizes the verbiage in this paragraph to
be the same as 13 other existing paragraphs which use the same phrase to
clarify the purpose for paint and/or coatings addressed in the respective
paragraphs.
MAXON, R.: This paragraph needs clarification. “…. constructed of carbon
steel shall be coated or painted.” Stainless steel cylinders do not need to be
58-34
NFPA 58
coated or painted. Many cylinders currently being manufactured are not
painted, they are powder coated.
________________________________________________________________
(11.4.1.9)
________________________________________________________________
11.4.1.9 Pressure relief valves shall be marked with the following:
(1) The pressure in psig ( MPag kPag ) at which the valve is set to start to
leak
(2) The rated relieving capacity in cubic feet per minute of air at 60°F
(15.6°C) and 14.7 psia ( an absolute pressure of 0.1 MPa 101 kPa )
MAXON, R.: The following wording should be used to replace the proposal
for 11.4.1.9. The pressure relief valve(s) shall be marked in accordance with
CGA Publication S-1.3 and ASME Section VIII U -125 through UG-136.
These are the marking requirement s .
________________________________________________________________
(11.4.1.13)
________________________________________________________________
11.4.1.13 Insert “ASME” at the beginning of this paragraph.
Substantiation: The term “containers” includes “cylinders” and “ASME
containers” throughout the code. Cylinders for use with engine fuel are
presently exempted from the requirement for overfilling prevention devices.
MCTIER, S.: “ASME” should also be inserted in front of “container” in the
second line of 11.4.1.14.
________________________________________________________________
58-151 Log #59e Final Action: Accept
(11.6.3.1)
________________________________________________________________
11.6.3.1 Hose, hose connections, and flexible hose connectors ( see 3.3.26
) used for conveying LP-Gas liquid or vapor at pressures in excess of 5 psig
(34.5 kPag) shall be fabricated of materials resistant to the action of LP-Gas
both as liquid and vapor and the hose and flexible hose connector shall be
reinforced with stainless steel wire braid of reinforced construction.
Substantiation: The absence of proper definitions for a flex connector
creates confusion as to what an installer should or should not use in a piping
system. Therefore, the new definitions in this proposal actually define the
material component used in various flexible connectors. Now, as different
flexible connectors are required in the Code, there are appropriate definitions
that correspond with the actual material used.
inches, are successfully being used in areas subject to seismic forces for
piping system flexibility. The additional length is important in providing
flexibility between a container and the piping system to decrease the chance of
________________________________________________________________
(11.6.3.3)
________________________________________________________________
11.6.3.3 Hose that operates at lower than container pressure shall be designed
for its maximum anticipated operating pressure.
11.6.3.7 Hose in excess of 5 psig (34.5 kPag) service pressure and quick
connectors shall be approved f or this application by the authority having
jurisdiction .
11.6.3.8 Hose that is utilized at lower than container pressure shall be
designed and marked for its maximum anticipated operating pressure.
Substantiation: The current text in 11.6.3.3 is relocated to proposed 11.6.3.8,
which is a more logical placement within the section.
The term “approved’ is defined as “acceptable to the authority having
jurisdiction” and remains in 11.6.3.7. Therefore, the phrase “authority having
jurisdiction” is redundant. The phrase “for this application” ceased to be
described in the 1983 edition of NFPA 58 so these words no longer reference
anything in the current text.
________________________________________________________________
(12.1.2.1)
________________________________________________________________
Recommendation: Delete 12.1.2.1 and 12.1.2.2. The maximum allowable
working pressure shall include a margin above the operation pressure.
Renumber the remaining sections starting with 12.1.2.1.
Substantiation: 12.1.2.1 doesn’t say anything and has no meaning. 12.1.2.2 is
unnecessary because Section 12.1.2 already says this.
________________________________________________________________
(12.1.2.2)
________________________________________________________________
Recommendation: 12.1.2.2 “Design Temperature and Pressure” should be
deleted and succeeding paragraphs should be renumbered.
Substantiation: This must be another “typo” as this paragraph number
shows up with its own title and no text. This should be deleted. In addition,
paragraphs are not titled according to the 2003 Edition of the NFPA MOS.
Committee Statement: The committee believes that the revision made in 58153 (Log #24) accomplishes the intent of the proposal.
________________________________________________________________
58-155 Log #72d Final Action: Accept
(12.1.2.3)
________________________________________________________________
of NFPA 58:
Section Number:
12.1.2.3 - “The positive margin fo r design pressure of ASME containers
shall be at least include a minimum 5 percent increase in the absolute vapor
pressure of the LP-Gas at the design storage temperature.”
58-35
NFPA 58
________________________________________________________________
(12.2.1)
________________________________________________________________
Each refrigerated LP-Gas container shall be identified by the attachment of a
name plate on the outer covering located either on the container or in a
conspicuous location close to the container.
Substantiation: The name plate may not be able to be readily attached to the
outer covering of a container, i.e., spray on foam insulation or other insulation
system, etc. It would be attached to the stairwell or other obvious and visible
location close to the container.
Revise 12.2.1 text to read as follows:
12.2.1 Each refrigerated LP-Gas container shall be identified by the
attachment of a name plate on the outer covering located either on the
container or in a visible location.
________________________________________________________________
(12.4.2)
________________________________________________________________
Recommendation: Delete Section 12.4.2. High Liquid Level Device and
renumber the following subsections as 12.4.2.7, 12.4.2.8 and 12.4.2.9.
Renumber the following sections.
Substantiation: Section 12.4 is titled Refrigerated LP-Gas Container
Instruments and Controls. All the following subsections deal with this subject,
including those in 12.4.2. There is no need to have 12.4.2 High-Liquid Level
Devices and then have a subsection to it 12.4.2.3 which addresses temperature
devices. List everything under 12.4.
Delete Section 12.4.2 and renumber the following subsections as 12.4.2.1,
12.4.2.2, and 12.4.2.3.
Committee Statement: Accepted and relocated.
MCTIER, S.: This should state that the number and title of 12.4.2 should be
deleted. Present 12.4.2.1, 12.4.2.2, and 12.4.2.3 should be renumbered as
12.4.1.7, 12.4.1.8, and 12.4.1.9. Change 12.4.3 to 12.4.2 and change 12.4.3.1
and 12.4.3.2 to 12.4.2.1 and 12.4.2.2.
________________________________________________________________
(12.4.2.1)
________________________________________________________________
The refrigerated LP-Gas container shall be equipped with a high high liquid
level flow cutoff device that is independent from all gauges.
Substantiation: The requirement for a high liquid level alarm is covered in
12.4.1.3. The liquid level cutoff described in 12.4.2.1 is usually referred to as a
high high cutoff and is a float type (dead man) switch.
Accept and hyphenate high-high.
Committee Statement: Accepted with an editorial change.
MCTIER, S.: I think that present 12.4.2.1 that is new 12.4.1.7 should remain
the same as it is more descriptive than “high high cutoff”.
________________________________________________________________
(12.5.7)
________________________________________________________________
Recommendation: Delete Section 12.5.7.
Substantiation: This is repeated in 12.5.8, renumber following sections.
________________________________________________________________
(12.5.9.1)
________________________________________________________________
Where automatically controlled sump pumps are used, they shall be equipped
with an automatic shutoff device that prevents their operation when exposed to
LP-Gas temperatures or vapors.
Substantiation: 12.5.9.1 does not allow LP-Gas vapors to be used as detection.
12.5.9.2 adds specifics when LP-Gas vapors are used.
12.5.9.2 needs to be tied to 12.5.9.1.
Revise 12.5.9.1 to read:
12.5.9.1 Where automatic controlled sump pumps are used, they shall be
equipped with an automatic shutoff device that prevents their operation when
exposed to the flash temperature of liquid LP-Gas. In addition, the sump pumps
shall be deenergized if flammable vapors in excess of 25 percent of the LFL
are detected within the impoundment area.
Committee Statement: The concept is accepted, and rewritten.
________________________________________________________________
(12.5.9.2)
________________________________________________________________
When LP-Gas vapors are used as the detection method they shall not exceed
25 percent of the lower flammable limit . or O ther approved methods of LPGas liquid or vapor detection may be used .
Substantiation: Editorial for clarity.
Committee Statement: Refer to Committee Action on 58-160 (Log #29).
________________________________________________________________
(12.7.1, 12.7.2, and 12.7.8 through 12.7.12 (New) )
________________________________________________________________
Submitter: Robert Bourke, Northeastern Regional Fire Code Dev.
12.7.1 The minimum spacing of refrigerated LP-Gas containers designed to
operate at greater than 15 psi (103 kPa) from occupied buildings, storage
containers for flammable or combustible liquids, and lines of adjoining
property that can be built upon shall be in accordance with Table 12.7.1.
12.7.2 The minimum spacing of refrigerated LP-Gas containers that operate
at below 15 psi (103 kPa) from occupied buildings, storage containers for
flammable or combustible liquids, and lines of adjoining property that can be
built upon shall be in accordance with Table 12.7.2.
Add new sections
12.7.8 An engineering and threat analysis shall be conducted to determine the
potential for spills and fires from accidental and intentional incidences.
12.7.9 Using the analysis specified in 12.7.8, provisions shall be made as
follows to minimize the possibility of the damaging effects of fire reaching
beyond a property line that can be built upon and that would result in a distinct
hazard:
Thermal Radiation Safety Standard. Aboveground refrigerated LP-Gas
containers shall be located so that:
(1) The allowable thermal radiation flux level at any building outside the
owner’s property line shall not exceed 10,000 BTU/sq. ft. per hr.;
(2) The allowable thermal radiation flux level for outdoor, unprotected
facilities or areas of congregation shall not exceed 450 BTU/sq. ft. per hour.
12.7.10 Blast Overpressure Safety Standard. Aboveground refrigerated LPGas containers shall be located so that the maximum allowable blast
overpressure at both buildings and outdoor, unprotected facilities or areas shall
not exceed 0.5 psi.
12.7.11 The spacing of aboveground refrigerated LP-Gas containers
impoundment to the property line that can be built upon shall be such that, in
the event of an LP-Gas spill as specified from the analysis in 12.7.8, an average
concentration of propane in air of 50 percent of the lower flammability limit
(LFL) does not extend beyond the property line that can be built upon, in
accordance with calculations using a model that incorporates the following:
(1) Takes into account physical factors influencing propane vapor dispersion,
including, but not limited to, gravity spreading, heat transfer, humidity, wind
speed and direction, atmospheric stability, buoyancy, and surface roughness
(2) Has been validated by experimental test data appropriate for the size and
conditions of the hazard to be evaluated
(3) Is acceptable to the authority having jurisdiction
12.7.12 LP-Gas container impounding areas shall be located so that the heat
58-36
NFPA 58
flux from a fire over the impounding area shall not cause major structural
damage to any LP-Gas marine carrier that could prevent its movement.
Substantiation: The proposed new sections regarding thermal radiation safety
and blast overpressure safety are drawn from a combination of NFPA 59A
Standard for the Production, Storage, and Handling of Liquefied Natural Gas
and the Code of Federal Regulations , Title 24 Housing and Urban
Development (HUD) PART 51-ENVIRONMENTAL CRITERIA AND
STANDARDS. Subpart C- for Siting of HUD-Assisted Projects Near
Hazardous Operations Handling Conventional Fuels or Chemicals of an
Explosive or Flammable Nature.
While the current LP Gas Code has minimum distances for spacing of LPGas containers, there does not appear to be any rationale for the distances in
the required tables. It is clear that the distances in Tables 12.7.1 and 12.7.2 are
not adequate to protect buildings or persons from exposure should there be an
incident at an LP-Gas facility.
I included the thermal radiation flux level for outdoor, unprotected facilities
or areas of congregation from the HUD requirements. At 450 BTU/sq. ft. per
hour, that would give people the ability to remain in place should a fire occur
at an LP-Gas facility. That way the local fire and police departments could
attend to the actual fire, rather than conducting large scale evacuations that take
enormous amounts of personnel that the majority of communities do not have
available.
The new section12.7.8 calls for an engineering and threat analysis to
determine the potential for spills and fires from accidental and intentional
incidences. In a post 9-11 world, intentional incidences need to be considered.
This engineering and threat analysis should establish the parameters of the
likely spills and/or fires that the AHJ may have to mitigate. From the analysis,
potential vapor dispersion and thermal radiation flux can be calculated as
specified in 12.7.9 and 12.7.11.
Background information on the standards and the logarithmic thermal
radiation and blast overpressure charts that provide assistance in determining
acceptable separation distances for HUD are contained in appendix II, CFR
Title 24 Housing and Urban Development PART 51-ENVIRONMENTAL
CRITERIA AND STANDARDS. Subpart C- for Siting of HUD-Assisted
Projects Near Hazardous Operations Handling Conventional Fuels or
Chemicals of an Explosive or Flammable Nature. [49 FR 5103, Feb. 10, 1984,
as amended at 61 FR 13334, Mar. 26, 1996].
Committee Statement: There is no substantiation that the references cited
have validity to refrigerated LP-Gas containers.
________________________________________________________________
(13.2.1.9)
________________________________________________________________
Consumer Services
Recommendation: Remove current text from section 13.2.1.9 and make it a
new section 13.2.2 with the same text and a heading that reads “Eletrical
Equipment.”
Substantiation: This section deserves better prominence in this chapter.
________________________________________________________________
58-164 Log #116j Final Action: Reject
(13.2.2.5(4))
________________________________________________________________
13.2.2.5(4) Portable Liquid Nitrogen crisis control equipment (referring to i o
silver device.)
and valves.
________________________________________________________________
58-165 Log #116k Final Action: Reject
(13.3.2.1.0)
________________________________________________________________
13.3.2.1.0 Portable Liquid Nitrogen equipment to freeze contents in a broken
pipe and keep it cold through repair or plugging or capping of the defective
pipe. Note here, the same equipment will freeze spill in place for easy
shoveling up into proper containers.
and valves.
________________________________________________________________
(13.3.2.8)
________________________________________________________________
Recommendation: Delete Section 13.3.2.8.
Substantiation: Editorial. This requirement is covered in 13.3.2.1, renumber
following sections.
________________________________________________________________
(13.3.2.9)
________________________________________________________________
Recommendation: Delete Section 13.3.2.9.
Substantiation: Editorial. This requirement is covered in 13.3.2.1, renumber
following sections.
________________________________________________________________
(Chapter 14)
________________________________________________________________
Recommendation: Add a new Section 14.4, Small LP-Gas System Operators
14.4 Small LP-Gas Systems ( SLGS)
14.4.1 Application.
14.4.1.1 A SLGS shall be a system with 99 or fewer users connected to a
single supply source, except for the following:
(1) A system with 9 or fewer users where no part of the system is located
in a public place.
(2) A system supplying one user where the system is located entirely on
the users premises.
14.4.1.2 Each meter or regulator outlet connected to a consumer of gas shall be
considered a user.
14.4.2 Registration.
14.4.2.1 Each SLGS shall register with the AHJ as follows:
1. In the United States, each SLGS shall register with the U.S. Department of
Transportation Pipeline and Hazardous Materials Safety Administration
(PHMSA).
2. Outside the United States, each SLGS shall register with the Authority
Having Jurisdiction.
14.4.2.2 Each SLGS shall identify the entity which
controls, operates, repairs, modifies or installs the system.
14.4.4.3 Damage Prevention. Each SLGS shall maintain a damage
prevention program to minimize damage to underground portions of the
system.
14.4.3.1 In the United States, each SLGS shall register and participate in a One
Call Notification Center located in the geographical area of the system location.
14.4.3.2 Outside the United States, each SLGS shall either register with a one
call system where one exists, or shall establish procedures for damage
prevention of underground portions of the SLGS.
14.4.4 Incident Reporting.
14.4.4.1* In the United States, incidents that involve one or more of the
following:
58-37
NFPA 58
(1) The release of gas from the SLGS where death(s) occurs or personal
injury resulting in-patient hospitalization occurs.
(2) The estimated property damage, including the cost of gas or both exceeds
$50,000.
A.14.4.4.1 In the United States, incident reporting is covered in Federal
Regulations, 49 CFR 191.3 and 191.9.
14.4.4.2 Incident reports shall contain an analysis of the cause of the accident,
repairs made and other significant factors.
14.4.4.3 Incident reports shall be sent to the Authority Having Jurisdiction.
14.4.5 SGLS Piping System Service Limitations. Pressure limits shall be in
accordance with Section 6.8.
14.4.6 Odorization. Each delivery to a SLGS shall be tested for the presence
of odorization in accordance with 4.2.3. The results of the tests shall be
documented.
14.4.7 Construction Records, Maps and Operating History.
Each SLGS shall provide construction records, maps, equipment and operating
history of the system and make them available to operating personnel and to
the Authority Having Jurisdiction.
14.4.8* Key Valve Maintenance. Key valves that are used to shut down the
system or parts of the system, in case of emergency shall be maintained
annually, and the maintenance shall be documented.
A.14.4.8 Key valves include the container valves and any additional valves that
can be shut off.
14.4.9 Leak Testing.
14.4.9.1 Each SLGS shall be tested prior to startup in accordance with
Section 6.12.
14.4.9.2 Each lateral service line that has been disconnected from the main
shall be pressure tested in accordance with Section 6.12 before placing it back
in service.
14.4.10 Response to Gas Leak Reports and Interruption of Gas Service.
14.4.10.1 Each system shall have a written procedure for response to reports
of gas leakage. All employees who respond to gas leakage calls shall be trained
in the procedure.
14.4.11 Operator Qualification and Covered Tasks.
14.4.11.1 Each SLGS shall have a written procedure for training operators in
covered tasks, which include tasks that:
(1) Are performed on a SLGS.
(2) Are an operations, maintenance, or emergency response task.
(3) Affects the operation or integrity of the pipeline system.
14.4.11.2 Each SLGS shall identify the covered tasks for the SLGS and keep
records of each of these tasks.
14.4.11.3 A covered task shall be an activity identified by the SGLS Operator
that fulfills all of the following characteristics:
(1) Is performed on a SLGS facility.
(2) Is an operations or maintenance task.
(3) Is required by this Code.
(4) Affects the operation or integrity of the pipeline system.
14.4.12 SLGS Operator Qualification Program. Each SLGS shall have a
written operator qualification program that includes training for operators and
addresses the following areas:
(1) Identifies covered tasks.
(2) Ensures that individuals are qualified.
(3) Allows unqualified individuals to perform a covered task while under
observation of a qualified individual.
(4) Evaluates the individual’s qualifications in the event of an incident.
(5) Evaluates the individual if there is a reason to believe that the individual is
no longer qualified.
(6) Informs the qualified individual of any changes affecting the covered
task.
(7) Determines intervals for re-qualification.
(8) Identifies qualified individuals.
(9) Lists covered tasks the individual is qualified to perform.
(10) The qualification methods.
(11) Record keeping of individuals performing tasks for a period of five
years.
14.4.13 Leak Surveys.
14.4.13.1 SLGS leak surveys shall be performed either as necessary or at a
minimum of every five years.
14.4.13.2 SGLS leak surveys performed using gas detection equipment shall
include a subsurface survey where underground piping is a part of the system.
14.4.13.3 SGLS leak surveys shall utilize flame ionization detectors,
combustible gas indicators and other means of leak detection.
14.4.13.4 Where leakage is found, equipment that gives a numerical reading
shall be used to determine the seriousness and location of the leak from
multiple test sites or the leak shall be repaired immediately.
14.4.14 Consumer Education. Each SGLS Operator shall provide information
to users and other residents in the area of a SGLS annually.
(1) Consumer education materials must include the characteristics and
propensities of LP-Gas.
(2) Consumer education materials shall be furnished to each active connected
service location.
Substantiation: The addition of this new section to NFPA 58 will ensure the
requirements currently in Federal Law, which are frequently ignored by
operators of small LP-Gas systems, are codified. Under the present U.S.
Federal Regulations the DOT, Pipeline and Hazardous Materials Safety
Administration (PHMSA) has jurisdiction over LP-Gas systems which serve 10
or more consumer locations connected to a single supply source and two or
more consumer locations connected to a single supply source which are located
in public areas. The regulations are contained in publication, 49 CFR Parts
190-199. This proposal incorporates the materials contained in 49 CFR, Parts
191-192 into NFPA 58.
The PHMSA regulations have been drafted and tailored to the natural gas
utilities. Many of the sections do not apply to a LP-Gas multi-consumer piped
system. The OPS publication does not address the LP-Gas supply system,
vaporizers, LP-Gas containers, liquid transfer piping and enclosures. At the
present the published rules refer to the NFPA 58 for code compliance where
OPS rules are silent, and the addition of this new section to NFPA 58 will
become the regulations for operators of SLGS. This new section will provide
the necessary requirements to comply with Federal Law in a form that SLGS
operators will find usable and understandable.
At the present time, PSMSA is implementing a public education program
(API 1162) which a SLGS may not be able to comply with. The new public
education program is intended for a large natural gas utility which covers a
large geographical area.
The development of an O & M manual for the operation of a LP-Gas system
is covered in NFPA 58 and could be accepted by the OPS to comply with the
OPS code.
A SLGS installation would meet or exceed the OPS requirements with the
operator following the NFPA 58 publication. The two areas of special interest
would be sections 6.23, 6.23.3.2 (fire safety analysis or incident preparedness
review) and Chapter 14 which will cover the O & M manual.
Publications covering these small systems include:
1. 49 CFR, Parts 190-199
2. NFPA 58 Handbook – 2004, Supplement 2
3. DOT – Small LP-Gas System Operations Manual
HOFFMANN, R.: Out of scope to NFPA 58.
STANNARD, JR., J.: While I have considerable sympathy regarding the
plight of the small, or medium sized propane marketer serving a trailer park or
a group of condominiums having individual meters, I believe that this proposal,
as worded, is the wrong approach towards solving their problems. It is my
opinion that this proposal if adopted, or even merely approved for presentation
to the NFPA membership, will have a very has the potential of causing a
serious and long lasting negative impact upon both the propane industry and
the National Fire Protection Association. In fact, I am of the opinion that its
appearance in the Report on Proposals (ROP) will undoubtedly result in a
firestorm of negative comments from both the established gas utilities and
many regulatory agencies and possibly the general public.
First, I would suggest that such a proposal is grossly premature in that it goes
far beyond the scope of either the 58 or 59 Committees and their respective
documents. Prior to even considering such a move, the LP-Gases Committee
should have petitioned the Standards Council for a change in the scope of the
Committee. Mr. John Ritzmann, the Chair of the Technical Committee on
Utility Gas Plants, wrote to Mr. Casey Grant, on September 6th of this year, in
which he commented:
“…. the LP-Gases Committee, during their meeting in Rapid City; adopted
a proposal (58-Log #102, submitted by Bill Mahre) that would add a new
Section 14.4 to NFPA 58, which would be titled “Small LP-Gas Systems
(SLGS).” The proposed section would effectively usurp the DOT’s “Pipeline
Safety Rules” as found under 49 CFR Parts 191 and 192 and permit an LP-Gas
marketer to become a “Public Utility” without regard to Federal or State laws.
Traditional Public Utilities may well challenge the proposed section because
they must comply with all of CFR Parts 191 and 192 as well as many local and
State rules and regulations, which the proposed section of NFPA 58 apparently
seeks to avoid.
I am concerned that the proposed Section 14.4 of NFPA 58 goes far
beyond the scope of the Committee on LP-Gases, which reads:
“Committee Scope: This Committee shall have primary
responsibility for documents on the design, construction,
installation, and operation of fixed and portable liquefied
petroleum gas systems in bulk plants and commercial, industrial
(with specified exceptions), institutional, and similar properties;
truck transportation of liquefied petroleum gas; engine fuel
systems on motor vehicles and other mobile equipment; storage
of containers awaiting use or resale; installation on commercial
vehicles; and liquefied petroleum gas service stations.”
Clearly, the design, construction, installation or operation of a public
58-38
NFPA 58
gas distribution system, which DOT defines as service to 10 or more
consumer locations connected to a single supply source, is outside
of that scope.
58. A scope change is required before we can consider such a proposal.
2. It will attempt to control operations which historically have been the
responsibility of DOT. Over the years, through diligent effort by present and
past committee members, we have a very good working relationship with DOT.
Any attempt to usurp control of pipeline safety will probably cancel all the
good will developed through the years.
3. The committee expertise in this area is limited. I fear we may produce an
inadequate document, which may could decrease pipeline safety.
I appreciate that the proposal was intended to lessen the burden to the LPG
industry, but I cannot condone actions which ultimately may lessen safety, and
tarnish the reputation of NFPA.
CZISCHKE, R.: I really do not have expertise in this area. If DOT wants it in
NFPA 58, a request should come from them.
MCTIER, S.: 58-168 Change 14.4.4.3 to 14.4.3 and renumber first sentence
of text as 14.4.3.1. Renumber 14.4.3.1 and 14.4.3.2 as 14.4.3.2 and 14.4.3.3. In
14.4.14 insert “annually” after “information” and delete “of a SGLS annually”.
In 14.4.14(1) change “propensities” to “properties”. Need more information.
The scope of the Committee on LP-Gases at Utility Gas Plants (NFPA
59) reads:
“Committee Scope: This Committee shall have primary
responsibility for documents on the design, construction,
location, installation, operation, and maintenance of refrigerated
and non-refrigerated liquefied petroleum gas plants to the point
of introduction into the utility gas distribution system or those
plants that are subject to the requirements of Title 49, Code of
Federal Regulations, Part 192, “Pipeline Safety Law,” issued
pursuant to the laws in 49 U.S.C. et seq.”
Again, it is clear that NFPA 59 does not have anything to do with
the design, construction, installation, operation, and maintenance
of a public gas distribution system. Moreover, it is also very clear
that NFPA 59 has the responsibility for the liquefied petroleum gas
plants that introduce LP-Gas, mixed or un-mixed, whether or not the
gas provides either base load or peaking service to the public gas
distribution system.
Annex A.1.1.1 of NFPA 59 clearly illustrates the specific limits
of NFPA 59’s jurisdiction with respect to the Federal jurisdiction.
It should be noted that both past chairs, Schwartz and Stannard,
spent considerable time and effort with the DOT staff to draft those
guidelines prior to DOT’s adoption, by reference, of NFPA 59 and
also NFPA 58.
If this proposal is adopted, it will have the effect of eliminating or
negating many important provisions of 49 CFR Parts 191 and 192
that relate to public safety. Among the requirements contained in
49 CFR192 that would be circumvented are the design, installation
and testing of piping buried in the public rights-of-way; the design,
installation, testing, operation and maintenance control devices,
including over-pressure protection, of control systems; extensive
operator qualification, training and substance abuse requirements;
and in-depth corrosion mitigation, prevention and documentation
requirements.”
In the last paragraph of that quote, Mr. Ritzmann quite succinctly points out some
of the shortcomings of the subject proposal. It is my opinion that the omission
of those items, which would surely lessen the burden upon the propane marketer,
could have a serious impact upon public safety and should be of considerable
concern to those Authorities of Jurisdiction having the responsibility of assuring
public safety. The requirements cited in Mr. Ritzmann’s letter, have evolved
over the last half century beginning with the promulgation and adoption of
the ASME B31.8 code during the 1950’s and they are widely supported by
the gas industry (both municipal and investor owned) and the federal and state
regulatory agencies.
The Small LP-Gas Systems (SLGS), which are the subject of this proposal, are
much akin to the “master meter systems” which have always been the bane of
many natural gas utilities. Those systems are considered by many in the utility
business to be one of the most dangerous parts of their business because they are,
all too often, lacking in regulatory oversight and frequently utilize procedures
and equipment that are patently deficient. There should be little doubt that the
larger and more sophisticated propane marketers are both capable and willing to
construct, own and operate a propane gas distribution system that is comparable
to the natural gas systems of the major utilities. However this proposal, if
adopted, would open the door for a small, and possibly ill-qualified, marketer
to install and operate a sub-standard system that could endanger not only his
customers but the reputation and credibility of the propane industry.
Propane is perceived by many in the fire services, as well as the media and the
general public, as one of the most hazardous materials that the public is exposed
to. The mere publication of this proposal in the ROP, let alone its adoption
will undoubtedly be considered by those holding that view as egregiously selfserving. Not only will the image of the industry suffer, but the NFPA itself
may well be tarnished as complicit to that self-service. The ensuing publicity
may well engender the media and some politicians to demand Federal industry
regulation via a new part to 49CFR. In order to stave off such a pre-emption
by the Feds, it may be necessary to expand the proposed new Chapter 14 so as
to incorporate many, if not most, of the requirements now found in 49CFR Part
192 and many of those requirements, of necessity, would supplant the present
requirements found in NFPA 58.
YOUNG, W.: I had reservations about 58-168 when we had the 58 meeting.
Since that time, I have received correspondence from John Ritzmann and Jim
Stannard which have increased and confirmed my concerns about this proposal.
I vote negatively for the following reasons:
1. This proposal covers material which is well outside of the scope of NFPA
________________________________________________________________
(14.1)
________________________________________________________________
Consumer Services
Multiple containers up to and including 6000 gallons aggregate water capacity
in vapor service only do not require written operations or maintenance
procedures provided they are not manifolded together.
Substantiation: The operation and maintenance of what are essentially
individual containers serving individual “appliances” but co-located together
are little different from an individual container serving an individual
“appliance.” There are many installations of 5, 6, or more 1000-gallon tanks
serving bulk tobacco barns in agricultural areas. Usually these tanks are not
connected to another tank in any way. One tank serves one or two barns.
Having to prepare operations and maintenance manuals for these “bulk plants”
is not warranted.
Revise 14.1 to read:
14.1* Scope. This chapter includes requirements related to the operations and
maintenance of bulk plant, industrial plant, refrigerated, marine, and pipeline
LP-Gas systems.
14.1.1 If stated elsewhere in the code, operation and maintenance requirements
are referenced to those sections.
14.1.2 Multiple containers in vapor service only, with individual water capacity
not exceeding 1200 gallons water capacity with a maximum aggregate of 6000
gallons shall not require written operations or maintenance procedures where
they are not manifolded together.
Add a new A.14.1.2. Industrial and some other installations with an capacity
of 10,000 pounds or more may be required by EPA regulations to have an
operation and maintenance manual.
Committee Statement: Accepted with editorial revisions, and renumbered.
BELKE, J.: The submitter argues that operation and maintenance procedures
are not necessary for multiple non-manifolded containers totaling less than
6000 gallons in vapor service, because such installations generally involve
uncomplicated uses. However, operational complexity is not the only
consideration in selecting safety measures. The hazards and risks associated
with a particular installation should be the overriding concerns, and even
simple installations can still pose significant risks. As a general matter, if a
significant risk can be mitigated with easy and low-cost safety precautions,
then those precautions ought to be taken. Operating and maintenance
procedures are basic safety measures that can easily be tailored to the
complexity of the installation. For basic installations, information customarily
provided by equipment vendors could fulfill this requirement. Ironically, the
submitter – himself a code enforcement official - would completely eliminate
the ability of other AHJs to enforce such requirements, regardless of whether
they find them to be useful. I disagree with this approach. In my opinion, it
makes more sense to either leave the requirement as it stands, or at least to
allow the AHJ to have discretion in imposing operating and maintenance
procedure requirements on small installations, based on the AHJ’s assessment
of facility risk.
________________________________________________________________
(14.2.2.2)
________________________________________________________________
Recommendation: 14.2.2.2* The asterisk should be removed from 14.2.2.2
and placed next to Section 14.3 Maintenance. Annex item A.14.2.2.2 should
become A.14.3 without any change in the text. An asterisk should be placed by
Section 14.3.
58-39
NFPA 58
Substantiation: The Annex item apparently covers maintenance procedures;
therefore, the asterisk should be placed by Section 14.3.
________________________________________________________________
58-171 Log #116l Final Action: Reject
(14.3.1.2.1)
________________________________________________________________
14.3.1.2.1 Persons shall be trained in use of Liquid Nitrogen crisis control
equipment both portable and fixed mounted to deal with any crisis that occurs.
and valves.
________________________________________________________________
(Table 15.1(a) through 15.1(q))
________________________________________________________________
Recommendation: Revise tables by substituting the tables in section 6.3 of
NFPA 54.
See Tables 6.3(a) through 6.3(m) from the 2006 edition of NFPA 54 on the
following pages.
Substantiation: The current tables are deleted, and tables from NFPA 54 are
substituted. The new tables have a more user friendly format, have longer pipe
lengths, round all entries to 3 significant digits, and use N/A for entries less
than 10,000 Btu/hr, which is a minimum useful amount.
MCTIER, S.: 58-172 Table 15.1(a) is O.K! Delete Table15.1(b) as 3 psig
pressure drop is too high for good pressure control. Table 15.1(c) does not
special use – 2 psig service to line pressure regulator. Table 15.1(d) shows 11.0
psi with 0.5 psi instead of 11 inches of water column and 0,5 inches of water
column drop. Table 15.1(e) is O.K! Table 15.1(f) is O.K! Table 15.1(g) does
not show special use – 2 psig service to line pressure regulator. Table 15.1(h)
does not show special use – 2 nd stg to appliance. Not economical or practical
application. Table 15.1(i) does not show special use - 2 psig service to line
pressure regulator. Table 15.1(j) is not allowed for propane operations and
should be deleted. We only allow a 2 psig inlet pressure to a line pressure
regulator. Table 15.1(k) does not show special use – Integral two stg regulator
at container to building. Also does not show “IPS” tubing. Table 15.1(l) should
be deleted as 2 psig lines run indoors and PE must be underground. Table
15.1(m) does not show special use – Integral two stg regulator at container to
building. Does not show “CTS” tubing and CTS tubing should be 1 inch rather
than ¾ inch.
What happened to table for CTS and IPS PE tubing for 1st stg reg to 2nd stg
reg at 10 psig with 1 psig drop? This is by far the biggest use for polyethylene
tubing.
________________________________________________________________
(A.3.3.30.6, A.5.2.5.5)
________________________________________________________________
Recommendation: 1. Add a new A.3.3.30.6 to read:
A.3.3.30.6 The installation fitting for the tube is designed so that the tube can
be slipped in and out of the container and so that the liquid level at the inner
end can be determined by observing when the shutoff valve vents a liquidvapor mixture.
2. Add a new A.5.2.5.5 to read:
A.5.2.5.5 See 5.7.11.6 for pressure gauge requirement.
Substantiation: Explanatory text is added to Annex A.
MCTIER, S.: In second line of A.3.3.30.6 insert “of the tube” after “end”, and
replace “a liquid-vapor” with “liquid”.
________________________________________________________________
(A.5.2.4.2)
________________________________________________________________
Recommendation: A.5.2.4.2 This Annex listed item should be changed to
A.5.2.5.4.
Substantiation: The text is referring to the original requirement date for an
opening for an actuated liquid withdrawal excess flow valve. The date is shown
in paragraph 2.2.3.3 of the 2001 Edition of NFPA 58.
________________________________________________________________
(A.5.2.5.5)
________________________________________________________________
Recommendation: Add a new A.5.2.5.5 to read:
A.5.2.5.5 See 5.7.11.6 for pressure gauge requirement.
Substantiation: Annex text is add to assist the user of the Code.
MCTIER, S.: This is a duplication of the second part of 58-174.
________________________________________________________________
(A.6.11.1(3))
________________________________________________________________
A 6.11.1 (3) If LP-Gas vapor is supplied at container pressure and there is no
flow, an ambient temperature drop below the container liquid temperature will
result in condensation of the LP-Gas vapor. If the system is activated, the
presence of liquid may result in a delay or malfunction of the system operation.
Substantiation: Numerous bulk plant installations in the United States are
successfully using LP-Gas vapor as a pressure source for activating remote
________________________________________________________________ shutoffs. The Technical Committee recognizes the viability of this type of
installation as evidenced by the 2004 edition provision that allows venting of
LP-Gas for this application:
(Table 15.1(e))
________________________________________________________________ “7.3.1(8) Venting of LP-Gas vapor utilized as the pressure source in remote
shutdown systems for internal valves and emergency shutoff valves shall be
permitted.”
Recommendation: Delete Table 15.1(e) located in Chapter 15 “Pipe and
Various pressure sources offer different characteristics that must be considered
Tubing Sizing Charts”.
in the design of a remote shut down system. This requirement provides the
Substantiation: This table outlines pipe sizes between the second-stage
necessary regulations to insure that a system is properly installed.
regulator and the appliance, using Schedule 80 steel pipe at 11 in. W.C. There
is no known reason to use Schedule 80 pipe for this application. I am unaware This requirement also recognizes that there are various materials that can be
utilized in the design and construction of a remote shut down system. However,
of any installations which have used this chart. If the installation involved a
fixed piping system the NFPA 54 tables would apply. The result of this deletion when using LP-Gas vapor, an installer must insure that the materials are
approved to be used with the vapor. This requirement is consistent with other
will provide only commonly used sizing charts in Chapter 15.
stipulations in the code.
The proposed maximum tubing size of 3/8” OD allows flexibility in system
Committee Statement: The committee believes that the table is useful and
design. The quantity of gas released in the event of tubing failure is limited by
needed.
an inlet orifice.
LP-Gas is inexpensive, readily available, free of moisture and provides a
58-40
NFPA 58
58-41
NFPA 58
58-42
NFPA 58
58-43
NFPA 58
58-44
NFPA 58
58-45
NFPA 58
58-46
NFPA 58
58-47
NFPA 58
58-48
NFPA 58
58-49
NFPA 58
58-50
NFPA 58
58-51
NFPA 58
58-52
NFPA 58
A.6.23.3 Add a line at the end of the existing text to read:
The National Fire Protection Association and the National Propane Gas
Association, through a grant with the Propane Education and Research
Council, have developed and published the “Fire Safety Analysis Manual for
LP-Gas Storage Facilities” in order to provide a format and guidance for the
performance of a fire safety analysis in conjunction with the requirements of
NFPA 58.
Committee Statement: Accepted with an editorial change.
that manual.
________________________________________________________________
(A.7.4.3.2(A))
________________________________________________________________
A.7.4.3.2(A) Because of the unique environment to which cylinders may be
subjected when used indoors, the filling density is being reduced from that
allowed for outdoor use cylinders. This reduction recognizes that cylinders to
be used in cabinet heaters are likely to be filled in extremely cold temperatures
and then brought indoors where temperatures are much warmer.
The change to 7.4.3.2 introduces another safety provision for composite
cylinders, which is to limit the filling density to a stricter standard than that
used for other containers. This provision will help ensure that cylinders filled
in cold temperatures will not experience a “liquid full” condition when brought
indoors and exposed to warmer temperatures.
outages.
reliable pressure source for a properly designed activation system. Guidance
for designing LP-Gas systems is provided in the appendix. The proposed
guidance recognizes different environmental conditions that must be considered of the use of cabinet heaters indoors.
during the design phase of the system.
O’NEIL, V.: Use of LPG vapor in these systems in not legal in Florida,
therefore I feel it inappropriate to comment at this time.
________________________________________________________________ the potential hazards resulting from fuel spillage.
(A.6.23.3)
________________________________________________________________ standard currently exists.
A.6.23.3 Add a line at the end of the existing text to read:
The National Fire Protection Association and the National Propane Gas
Association, through a grant with the Propane Education Research Council,
have developed and published the “Fire Safety Analysis Manual for LPExplanation of Negative:
Gas Storage Facilities” in order to provide a format and guidance for the
KING, J.: This proposal is supporting information for a change in the Code
performance of a fire safety analysis in conjunction with the requirements of
to permit the use of composite cylinders in portable unvented cabinet heaters
NFPA 58.
inside residences. This type of use is not in the best interest of safety, and
should not be approved. Supporting changes of this type should also not be
approved.
National Fire Protection Association and the National Propane Gas Association currently allowed limit.
and published the “Fire Safety Analysis Manual for LP-Gas Storage Facilities” MAXON, R.: The Compressed Gas Association did not have sufficient time
to review this proposal with its members. The CGA cannot support a proposal
that subjects the equipment to a proposed ANSI Standard that is yet to be
written. The CGA is expected to have comments for the ROC meeting.
Revise text to read:
58-53
NFPA 58
________________________________________________________________
58-180 Log #CP25f Final Action: Accept
(Annex C and Annex D)
________________________________________________________________
Recommendation: Revise C.1.1.2 to read:
C.1.1.2 This annex is not applicable to Department of Transportation (DOT)
tank car , portable tank , container or cargo tank specifications. Tank cars, P
p ortable and cargo tanks are basically ASME containers and are covered in
Annex D.
Revise D.1.1.2, D.2.4.1, and D.2.4.4 to read:
D.1.1.2 DOT (ICC) specification portable tank s containers and cargo tanks
are either ASME or API-ASME containers. In writing these specifications,
which should be consulted for complete information, additions were made to
these pressure vessel codes to cover the following:
(1) Protection of container valves and appurtenances against physical damage
in
transportation.
(2) Hold-down devices for securing cargo containers to conventional
vehicles.
(3) Attachments to relatively large [6000 gal (22.7 m 3 ) or more water
capacity] cargo containers in which the container serves as a stress member in
lieu of a frame.
D.2.4.1 DOT (ICC) specifications for portable tank s containers and cargo
tanks require ASME or API-ASME construction for the container proper ( see
D.1.1.2) . Several such specifications were written by the ICC prior to 1967,
and DOT has continued this practice.
D.2.4.4 DOT (ICC) pressure specifications applicable to portable tank s
containers and cargo tanks currently in use are listed in Table D.2.4.4. New
construction is not permitted under the older specifications. However, use
of these older containers is permitted to continue provided they have been
maintained in accordance with DOT (ICC) regulations.
Substantiation: DOT specifications are not limited to the pressures in Table
D.2.4.4. Portable tanks are containers by definition, Table D.2.4.4 does not
apply to cylinders
MCTIER, S.: A number of editorial changes are as follows:
C.1.1.2 Insert “railroad” in front of “tank car” in line 1.
Insert “Railroad” in front of “Tank cars” in second line.
“Railroad tank car” is used throughout the code.
D.1.1.2(1) Replace “container” with “tank” in the first line.
D.1.1.2(2) Replace “containers” with “tanks”.
D.1.1.2(3) Replace “containers” with “tanks” in the first line and replace
“container” with “cargo tank” in the first line.
D.2.4.1 Replace “container” with “tank” in the second line.
D.2.4.4 Replace “containers “ with “tanks” in the last line.
________________________________________________________________
(C.3.2.2 (1))
________________________________________________________________
Recommendation: Revise C.3.2.2 (1) to read:
(1) Cylinders subjected to fire are required to be requalified, reconditioned,
or repaired in accordance with C.3.3 or permanently removed from service
except that DOT 4E (aluminum) cylinders and composite cylinders must be
Substantiation: The use of composite cylinders has been added to NFPA 58
in other actions. This change recognizes composite cylinders involved in a fire
can not be re-used.
________________________________________________________________
(D.1.1.2, D.2.4.1)
________________________________________________________________
Recommendation: D.1.1.2 Change “tank” to “tanks” and delete “ containers
” in the first line.
In the first line of (1) change “container” to “tank”.
In the first line of (2) change containers” to “tanks”.
In the second line of (3) change “containers” to “tanks” and change
“container” to “tank”.
D.2.4.1 In the first line change “tank” to “tanks” and in the third line change
“container” to “tank”. Also delete “containers” in first line.
Substantiation: The Annex material is covering portable tanks and cargo
tanks.
________________________________________________________________
58-183 Log #72e Final Action: Accept
(D.2.1, D.2.4)
________________________________________________________________
of NFPA 58:
Section Number:
D.2.1.2 - “Pressure vessel codes... be the design maximum allowable working
pressure ( MAWP) of the container,
D.2.1.3 - However, because...at the design maximum allowable working
pressure (MAWP) of the container,
Table D.2.1.5 - Change “design pressure” to “maximum allowable working
pressure (MAWP)” for all occurrences.
D.2.4.3 - “To prevent... above the design maximum allowable working
pressure ( MAWP ) was common. To eliminate... confusion, and... of the
originally marked design maximum allowable working pressure ( MAWP ).”
Table D.2.4.4 = Note b. Change ‘design pressure” to “maximum allowable
working pressure (MAWP)”
________________________________________________________________
(I.1 (a), (b), and (c))
________________________________________________________________
Recommendation: Revise the 3 Figures in Annex I as shown. The notes to
Figure I.1(b) are not shown, and remain, unchanged.
See Figure I-1a on the following pages
See Figure I-1b on the following pages
See Figure I-1c on the following pages
Substantiation: The drawings are updated, but the information is unchanged.
MCTIER, S.: We have already done considerable work to have all distances
to scale in all three drawings. In addition, errors still persist as follows:
Figure I.1(a) Reference to Note 2 should be “6.3.10” instead of “6.3.9”.
Reference to distance from cylinder filled on site should be “(Note 2)” instead
of “(Note 1)”.
Figure I.1(b) Reference to Note 1 should be “6.3.10” instead of “6.3.9”.
Figure I.1(c) Reference to Note 1 should be “6.3.10” instead of “6.3.2”.
Reference to Note 2 should be “6.3.4.2” instead of “6.3.2”.
________________________________________________________________
(Figure I.1(b))
________________________________________________________________
Recommendation: Figure I.1(b) In the last line of Note 1 substitute “6.3.10”
for “6.3.9”.
Substantiation: This is a correction of the wrong reference shown in notes to
the table. This was not shown as errata by NFPA.
58-54
NFPA 58
Window air
conditioner
(source of
ignition)
ctIntake to dire
e
vent applianc
Central AC
compressor
(source of ignition)
5 ft (min)
(Note 1)
10 ft (min)
(Note 2)
3 ft
(min)
(Note 3)
Crawl space opening,
windows, or exhaust fan
3 ft
(min)
(Note 3)
Cylinder filled on site
from bulk truck
Cylinders not filled on site
For SI units, 1 ft = 0.3048 m
Note 1: 5-ft minimum front relief valve in any direciton away
from any exterior source of ignition, openings into directvent appliances, or mechanical ventiliation air intakes.
Refer to 6.3.7
Note 2: If the cylinder is filled on site from a bulk truck, the
filling connection and vent valve must be at least 10 ft from
any exterior source of ignition, openings into direct-vent
appliances, or mechanical ventiliation air intakes.
Refer to 6.3.9
Note 3: Refer to 6.3.7.
Figure I-1a
58-55
NFPA 58
Intake to directvent appliance
10 ft (min)
(Note 1)
Central AC
compressor
10 ft (min)
(Note 1)
Under 12
gal w.c. 5
5 ft
(min)
(Note 2)
125
gal -500
w.c
.
501
-20
00
gal
w.c
.
10 ft (min)
(Note 1)
25 ft
(min)
(Note 3)
Window air
conditioner
(source of
ignition)
10 ft (min)
25 ft
(min)
(Note 3)
Note 1: Regardless of its size, any ASME container filled on
site must be located so that the filling connection and fixed
maximum liquid level gauge are at least 10 ft from any
external source of ignition (e.g., open flame, window A/C,
compressor), intake to direct-vented gas appliance, or intake
to a mechanical ventilation system.
Refer to 6.3.9.
Note 2: Refer to 6.3.9.
Note 3: this distance may be reduced to no less than 10 ft for a
single container of 1200 gal (4.5 m3) water capacity or less,
provided such container is at least 25 ft from any other LP-Gas
container of more than 125 gal (0.5 m3) water capacity. Refer
to 6.3.3.
Figure I-1b
58-56
r 125
Unde w.c.
gal
5 ft (min)
(Note 1)
NFPA 58
Intake to directvent appliance
10 ft (min)
(Note 1)
10 ft (min)
(Note 1)
Central AC
compressor
10 ft (min)
(Note 2)
2000
or les gal w.c.
s
Nearest line of adjoining
property that can be
built upon
For SI units, 1 ft = 0.3048 m
Window air conditioner
10 ft (min)
(Note 1)
Crawl space opening,
window, or exhaust fan
10 ft (min)
(Note 2)
Note 1: The relief valve, filling connection, and liquid fixed maximum level
gauge vent connection at the container must be at least 10 ft from any exterior
source of ignition, openings into direct-vent applainces, or mechanical
ventilation air intakes, Refer to 6.3.2.
Note 2: No part of an underground container shall be less than 10 ft from an
important building or line of adjoining property that can be built upon. Refer to
6.3.2.
Figure I-1c
58-57
NFPA 58
________________________________________________________________
(I.1(c))
________________________________________________________________
Recommendation: Figure I.1(c) In the last line of Note 1 substitute “6.3.10”
for “6.3.2”
Also, in the last line of Note 2 substitute “ 6.3.4.2” for “6.3.2”.
Substantiation: This is a part of the corrected published NFPA 58 errata.
Subsection 6.3.2 refers to meeting the provisions of 6.24.3 through 6.24.5
that are a part of Section 6.24 - Alternate Provisions for Installation of ASME
Containers. This has nothing to do with Figure I.1(c).
________________________________________________________________
(Annex K)
________________________________________________________________
Recommendation: Add new Annex K to read as follows:
Annex “K” Burial and Corrosion Protection for Underground and
Mounded ASME Containers
K.1 Scope
K.1.1 This annex provides general information for the burial of 125 gal (.5 m
3 ) through 2000 gal (7.6 m3)water capacity underground and mounded ASME
containers.
K.1.2 Location for underground and mounded ASME containers must comply
with applicable sections of Chapter 6, federal and state codes.
K.2 Container Preparation and Burial
K.2.1 Prior to burial, the container should be inspected for any coating damage
that may have been caused during the installation process.
Any damaged areas should be repaired with a coating that is compatible with
the manufacturer’s coating and is intended for underground service.
K.2.2. Cathodic protection should be considered as an additional method to
minimize corrosion. Magnesium anodes are used in this process and should be
attached to the container according to the anode manufacturer’s instructions.
The number and size of anode installed will vary depending on the container
size.
K.2.3 Di-electric couplings should be used to isolate the container from the
piping when using copper or other metallic piping to minimize current flow.
K.2.4. The backfill material used to cover the container should be compacted
soil or course sand. Backfill material containing crushed rock or other material
that could damage the container coating should be avoided.
K.3 Inspection and Testing of Corrosion Protection
K.3.1. A periodic test program should be established to monitor the
effectiveness of the cathodic protection of the container. Inspection records
should be made available to the container owner.
Substantiation: This proposal provides installers guidance for installing
underground tanks.
Add new Annex K to read as follows:
Annex “K” Burial and Corrosion Protection for Underground and
Mounded ASME Containers
K.1 Scope
K.1.1 This annex provides general information for the burial of 125 gal (.5 m
3 ) through 2000 gal (7.6 m3)water capacity underground and mounded ASME
containers.
K.1.2 Location for underground and mounded ASME containers must comply
with applicable sections of Chapter 6, federal and state codes.
K.2 Container Preparation and Burial
K.2.1 Prior to burial, the container should be inspected for any coating damage
that may have been caused during the installation process.
K.2.2. Cathodic protection should be considered as an additional method to
minimize corrosion. Anodes are used in this process and should be attached to
the container according to the anode manufacturer’s instructions. The number
and size of anodes installed will vary depending on the container size.
K.2.3 Di-electric couplings should be used to isolate the container from the
piping when using metallic piping (i.e. copper, steel, etc.) to minimize current
flow.
K.2.4. The backfill material used to cover the container should be compacted
soil or course sand. Backfill material containing crushed rock or other material
that could damage the container coating should be avoided.
K.3 Inspection and Testing of Corrosion Protection
K.3.1. A periodic test program should be established to monitor the
effectiveness of the corrosion protection for the container. Inspection records
should be made available to the container owner.
Committee Statement: Accepted with editorial changes.
FREDENBURG, R.: This addition is very good. But, there are a few things
left out. The first section after K.2 should be to follow the manufacturer’s
installation instructions. K.2.1 should include a statement to repair damage
found. True, this requirement is included in the code (6.6.6.1(J)), but including
it here would help complete the package. After all, the admonition against rock
is in the code and in the annex (6.6.6.1(L) and K.2.4). And since the code says
backfill shall be free of rocks and abrasives, changing “should be avoided” at
the end of K.2.4 to “shall be avoided” would be appropriate, as it deals with a
requirement and “should” is not correct.
STANNARD, JR., J.: I welcome the additional material on corrosion
protection, however I believe that there is a need to further discussion of this
important subject.
58-58
FORM FOR COMMENTS ON NFPA REPORT ON PROPOSALS
2006 FALL REVISION CYCLE
FINAL DATE FOR RECEIPT OF COMMENTS: 5:00 pm EST, MARCH 3, 2006
FOR OFFICE USE ONLY
For further information on the standards-making process, please contact the Codes
and Standards Administration at 617-984-7249
For technical assistance, please call NFPA at 617-770-3000
Log #:
Date Rec'd:
Please indicate in which format you wish to receive your ROP/ROC
electronic
paper download
(Note: In choosing the download option you intend to view the ROP/ROC from our Website; no copy will be sent to you.)
Date________________Name________________________________________________Tel. No.
Company _________________________________________________________________________________________________
Street Address_________________________________City________________________State______Zip
_________________
Please Indicate Organization Represented (if any)_______________________________________________________________
1. a) NFPA Document Title___________________________________
NFPA No. & Year_______
b) Section/Paragraph _____________________________________
2.
Comment on Proposal No. (from ROP): ________________
3.
Comment recommends: (check one)
new text
revised text
deleted text
4. Comment (include proposed new or revised wording, or identification of wording to be deleted): (Note: Proposed text
should be in legislative format: i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote
wording to be deleted (deleted wording). _________________________________________________________________
______________________________________________________________________________________________
5. Statement of Problem and Substantiation for Comment: (Note: State the problem that will be resolved by your recommendation;
give the specific reason for your comment including copies of tests, research papers, fire experience, etc. If more than 200 words, it
may be abstracted for publication.) _____________________________________________________________________
6. Copyright Assignment
a) □ I am the author of the text or other material (such as illustrations, graphs) proposed in this Comment.
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follows: (please identify which material and provide complete information on its source)______________________________
____________________________________________________________________________________________________
I hereby grant and assign to the NFPA all and full rights in copyright in this Comment and understand that I acquire no rights in any
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and that I have full power and authority to enter into this assignment.
Signature (Required) _____________________________________
PLEASE USE SEPARATE FORM FOR EACH COMMENT • NFPA Fax: (617) 770-3500
Mail to: Secretary, Standards Council, National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471
11/28/2005
VI
Notice of Intent to Make a Motion (NITMAM)
Sequence of Events Leading to Issuance of an NFPA Committee Document
Step 1 Call for Proposals
▼
Proposed new Document or new edition of an existing Document is entered into one of two yearly
revision cycles, and a Call for Proposals is published.
Step 2
Report on Proposals (ROP)
▼
Committee meets to act on Proposals, to develop its own Proposals, and to prepare its Report.
▼
Committee votes by written ballot on Proposals. If two-thirds approve, Report goes forward. Lacking
two-thirds approval, Report returns to Committee.
▼
Report on Proposals (ROP) is published for public review and comment.
Step 3
Report on Comments (ROC)
▼
Committee meets to act on Public Comments to develop its own Comments, and to prepare its report.
▼
Committee votes by written ballot on Comments. If two-thirds approve, Reports goes forward. Lacking
two-thirds approval, Report returns to Committee.
▼
Report on Comments (ROC) is published for public review.
Step 4
Technical Report Session
▼
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Technical Report Session and proceed to the Standards Council for issuance.)
▼
NFPA membership meets each June at the Annual Meeting Technical Report Session and acts on
Technical Committee Reports (ROP and ROC) for Documents with “certified amending motions.”
▼
Committee(s) vote on any amendments to Report approved at NFPA Annual Membership Meeting.
Step 5
Standards Council Issuance
▼
Notification of intent to file an appeal to the Standards Council on Association action must be filed
within 20 days of the NFPA Annual Membership Meeting.
▼
Standards Council decides, based on all evidence, whether or not to issue Document or to take other
action, including hearing any appeals.
VIII
The Technical Report Session of the NFPA Annual Meeting
The process of public input and review does not end with the publication of the ROP and ROC. Following the
completion of the Proposal and Comment periods, there is yet a further opportunity for debate and discussion
through the Technical Report Sessions that take place at the NFPA Annual Meeting.
The Technical Report Session provides an opportunity for the final Technical Committee Report (i.e., the ROP
and ROC) on each proposed new or revised code or standard to be presented to the NFPA membership for the
debate and consideration of motions to amend the Report. The specific rules for the types of motions that can be
made and who can make them are set forth in NFPA’s rules which should always be consulted by those wishing
to bring an issue before the membership at a Technical Report Session. The following presents some of the
main features of how a Report is handled.
What Amending Motions are Allowed. The Technical Committee Reports contain many Proposals and
Comments that the Technical Committee has rejected or revised in whole or in part. Actions of the Technical
Committee published in the ROP may also eventually be rejected or revised by the Technical Committee during
the development of its ROC. The motions allowed by NFPA rules provide the opportunity to propose
amendments to the text of a proposed code or standard based on these published Proposals, Comments and
Committee actions. Thus, the list of allowable motions include motions to accept Proposals and Comments in
whole or in part as submitted or as modified by a Technical Committee action. Motions are also available to
reject an accepted Comment in whole or part. In addition, Motions can be made to return an entire Technical
Committee Report or a portion of the Report to the Technical Committee for further study.
The NFPA Annual Meeting, also known as the World SafetyConference and Exposition®, takes place in June of
each year. A second Fall membership meeting was discontinued in 2004, so the NFPA Technical Report
Session now runs once each yearat the Annual Meeting in June.
Who Can Make Amending Motions. Those authorized to make these motions is also regulated by NFPA rules.
In many cases, the maker of the motion is limited by NFPA rules to the original submitter of the Proposal or
Comment or his or her duly authorized representative. In other cases, such as a Motion to Reject an accepted
Comment, or to Return a Technical Committee Report or a portion of a Technical Committee Report for Further
Study, anyone can make these motions. For a complete explanation, NFPA rules should be consulted.
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Session, the intended maker of the motion must file, in advance of the session, and within the published
deadline, a Notice of Intent to Make a Motion. A Motions Committee appointed by the Standards Council then
reviews all notices and certifies all amending motions that are proper. The Motions Committee can also, in
consultation with the makers of the motions, clarify the intent of the motions and, in certain circumstances,
combine motions that are dependent on each other together so that they can be made in one single motion. A
Motions Committee report is then made available in advance of the meeting listing all certified motions. Only
these Certified Amending Motions, together with certain allowable Follow-Up Motions (that is, motions that have
become necessary as a result of previous successful amending motions) will be allowed at the Technical Report
Session.
Consent Documents. Often there are codes and standards up for consideration by the membership that will be
non-controversial and no proper Notices of Intent to Make a Motion will be filed. These “Consent Documents” will
bypass the Technical Report Session and head straight to the Standards Council for issuance. The remaining
Documents are then forwarded to the Technical Report Session for consideration of the NFPA membership.
Important Note: The filing of a Notice of Intent to Make a Motion is a new requirement that takes effect
beginning with those Documents scheduled for the Fall 2005 revision cycle that reports to the June 2006 Annual
Meeting Technical Report Session. The filing of a Notice of Intent to Make a Motion will not, therefore, be
required in order to make a motion at the June 2005 Annual Meeting Technical Report Session. For updates on
the transition to the new Notice requirement and related new rules effective for the Fall 2005 revision cycle and
the June 2006 Annual Meeting, check the NFPA website.
IX
Action on Motions at the Technical Report Session. In order to actually make a Certified Amending Motion at
the Technical Report Session, the maker of the motion must sign in at least an hour before the session begins. In
this way a final list of motions can be set in advance of the session. At the session, each proposed Document up
for consideration is presented by a motion to adopt the Technical Committee Report on the Document. Following
each such motion, the presiding officer in charge of the session opens the floor to motions on the Document from
the final list of Certified Amending Motions followed by any permissible Follow-Up Motions. Debate and voting on
each motion proceeds in accordance with NFPA rules. NFPA membership is not required in order to make or
speak to a motion, but voting is limited to NFPA members who have joined at least 180 days prior to the session
and have registered for the meeting. At the close of debate on each motion, voting takes place, and the motion
requires a majority vote to carry. In order to amend a Technical Committee Report, successful amending motions
must be confirmed by the responsible Technical Committee, which conducts a written ballot on all successful
amending motions following the meeting and prior to the Document being forwarded to the Standards Council for
issuance.
Standards Council Issuance
One of the primary responsibilities of the NFPA Standards Council, as the overseer of the NFPA codes and
standards development process, is to act as the official issuer of all NFPA codes and standards. When it
convenes to issue NFPA documents it also hears any appeals related to the Document. Appeals are an
important part of assuring that all NFPA rules have been followed and that due process and fairness have been
upheld throughout the codes and standards development process. The Council considers appeals both in writing
and through the conduct of hearings at which all interested parties can participate. It decides appeals based on
the entire record of the process as well as all submissions on the appeal. After deciding all appeals related to a
Document before it, the Council, if appropriate, proceeds to issue the Document as an official NFPA code or
standard. Subject only to limited review by the NFPA Board of Directors, the Decision of the Standards Council is
final, and the new NFPA code or standard becomes effective twenty days after Standards Council issuance. The
illustration on page 9 provides an overview of the entire process, which takes approximately two full years to
complete.
X

- National Propane Gas Association

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