Explosive Gas Atmospheres Poster

Guide to Hazardous Locations
Explosive Gas Atmospheres
Ex Marking
Protection Concepts
US (NEC 500) and CA (CEC Annex J)
®
Type of Protection
(optional except for I.S.)
Type of Protection
Code
General Requirements
Permitted Class
Explosionproof for Class I,
Division 1, Groups A, B, C, D T5
Permitted Division
(optional except for Division 2)
Increased Safety
Temperature Class
(T5 and T6 optional)
Permitted Group
Ambient temperature ranges other than standard (-25°C ≤ Ta ≤ +40°C) must be marked.
Non-Incendive
Non-Sparking
US (NEC® 505)
American
National Standard
Explosionproof
Type of
Protection
Permitted Class
Temperature Class
Group
Flameproof
Class I, Zone 1, AEx d [ia] IIC T5 Gb
Explosion-Protected Gas Group Equipment
Protection Level
Permitted Zone
I.S. Output
(optional)
Ambient temperature ranges other than standard (-20°C ≤ Ta ≤ +40°C) must be marked.
EU and IEC
Temperature
Equipment
Class
Protection
Group
Level
Type of Protection
Enclosed Break
Ex d [ia Ga] IIC T5 Gb
Gas Group
Explosion-Protected
I.S. Output
Powder-Filled
Intrinsic Safety
Equipment
Protection
Level
Ambient temperature ranges other than standard (-20°C < Ta < +40°C) must be marked.
The Equipment Protection Level is not required to be marked if the type of protection code
includes the “a”, “b”, or “c” suffix as part of the type of protection designation, e.g. “Ex eb
IIC T4” is equivalent to “Ex e IIC T4 Gb”.
Additional EU marking per 94/9/EC (ATEX)
CE Conformity Marking
Explosion Protection Marking
Type of Exposive Atmosphere:
G (for gas, vapor, mist)
II 2(1) G
1725
Category for I.S. Output
Category
Equipment Group 1 (for Zone 0)
I (for mines) 2 (for Zone 1)
II (for other than mines) 3 (for Zone 2)
Pressurized
EPL/Category
Definition
Typical Zone
IEC
EU (ATEX)
EPL Group Category Group of Application
Mines, “very high”
Ma
level of protection
Mines, “high”
level of protection
Gas atmospheres,
“very high” level
of protection
Gas atmospheres,
“high” level of
protection
Gas atmospheres,
“enhanced” level
of protection
M1
I
I
Mb
M2
Ga
1G
Gb
II
2G
N/A
0
II
1
3G
2
Level of protection assigned to equipment based on its likelihood of
becoming a source of ignition
Encapsulation
Oil Immersion
FM Approvals
1151 Boston-Providence Turnpike, Norwood, MA 02062-9102
Phone: +1 (1)781 255 4851 Fax: +1 (1)781 762 9375
E-mail: [email protected]
In the United Kingdom: FM Insurance Company Limited
1 Windsor Dials, Windsor, Berkshire, SL4 1RS
Authorized by the Prudential Regulation Authority and regulated by the
Financial Conduct Authority and the Prudential Regulation Authority.
P0296 © 2013 FM Approvals
(05/2015) All rights reserved.
fmapprovals.com
US
CA
US
CA
EU
IEC
US
CA
EU
IEC
EU
IEC
US
CA
US
CA
EU
IEC
US
CA
EU
IEC
US
CA
EN
IEC
EU
IEC
US
CA
EU
IEC
US
CA
EU
IEC
US
CA
US
CA
EU
IEC
US
CA
EU
IEC
US
CA
EU
IEC
FM 3600
CSA C22.2 No. 0
ISA 60079-0
CSA C22.2 No. 60079-0
EN 60079-0
IEC 60079-0
ISA 60079-7
CSA C22.2 No. 60079-7
EN E60079-7
IEC E60079-7
EN 60079-7
IEC 60079-7
FM 3611
CSA C22.2 No. 213
ISA 60079-15
CSA C22.2 No. 60079-15
EN 60079-15
IEC 60079-15
FM 3615
CSA C22.2 No. 30
EN 60079-1
IEC 60079-1
ISA 60079-1
CSA C22.2 No. 60079-1
EN 60079-1
IEC 60079-1
EN 60079-1
IEC 60079-1
ISA 60079-5
CSA C22.2 No. 60079-5
EN 60079-5
IEC 60079-5
ISA 60079-15
CSA C22.2 No. 60079-15
EN 60079-15
IEC 60079-15
FM 3610
CSA C22.2 No. 157
ISA 60079-11
CSA C22.2 No. 60079-11
EN 60079-11
IEC 60079-11
ISA 60079-11
CSA C22.2 No. 60079-11
EN E60079-11
IEC 60079-11
ISA 60079-11
CSA C22.2 No. 60079-11
EN 60079-11
IEC 60079-11
Class I, Division 1 & 2
Class I, Division 1 & 2
Class I, Division 1 & 2
Class I, Division 1 & 2
Category 1G, 2G, & 3G
EPL Ga, Gb, Gc
Class I, Zone 1
Class I, Zone 1
Category 2G
EPL Gb
Category 3G
EPL Gc
Class I, Division 2
Class I, Division 2
Class I, Zone 2
Class I, Zone 2
Category 3G
EPL Gc
Class I, Division 1
Class I, Division 1
Category 1G
EPL Ga
Class I, Zone 1
Class I, Zone 1
Category 2G
EPL Gb
Category 3G
EPL Gc
Class I, Zone 1
Class I, Zone 1
Category 2G
EPL Gb
Class I, Zone 2
Class I, Zone 2
Category 3G
EPL Gc
Class I, Division 1
Class I, Division 1
Class I, Zone 0
Class I, Zone 0
Category 1G
EPL Ga
Class I, Zone 1
Class I, Zone 1
Category 2G
EPL Gb
Class I, Zone 2
Class I, Zone 2
Category 3G
EPL Gc
AEx nC (or AEx nCc)
Ex nL
Ex nL (or Ex nLc)
Type X
Type X
Type Y
Type Y
Type Z
Type Z
AEx px (or AEx pxb)
Ex px
Ex px (or Ex pxb)
Ex px (or Ex pxb)
AEx py (or AEx pyb)
Ex py
Ex py (or Ex pyb)
Ex py (or Ex pyb)
AEx pz (or AEx pzc)
Ex pz
Ex pz (or Ex pzc)
Ex pz (or Ex pzc)
US
CA
IEC
US
CA
US
CA
US
CA
US
CA
EU
IEC
US
CA
EU
IEC
US
CA
EU
IEC
Class I, Zone 2
Class I, Zone 2
EPL Gc
Class I, Division 1
Class I, Division 1
Class I, Division 1
Class I, Division 1
Class I, Division 2
Class I, Division 2
Class I, Zone 1
Class I, Zone 1
Category 2G
EPL Gb
Class I, Zone 1
Class I, Zone 1
Category 2G
EPL Gb
Class I, Zone 2
Class I, Zone 2
Category 3G
EPL Gc
Protection
Principle
Area Classification
Flammable Material
Flammable Material Flammable Material
Present Continuously Present Intermittently Present Abnormally
IEC / EU
US (NEC® 505)
US (NEC® 506)
CA (CEC Section 18)
CA (CEC Annex J)
AEx nR (or AEx nRc)
Ex nR
Ex nR (or Ex nRc)
Ex nR (or Ex nRc)
AEx ma
Ex ma
Ex ma
Ex ma
AEx m
AEx mb
Ex mb
Ex mb
Ex mb
AEx mc
Ex mc
Ex mc
Ex mc
AEx o (or AEx ob)
Ex o
Ex o (or Ex ob)
Ex o (or Ex ob)
Ex oc
Ex oc
US
CA
EU
IEC
US
CA
EU
IEC
US
US
CA
IEC
EU
US
CA
EU
IEC
US
CA
EU
IEC
EN
IEC
Class I, Zone 2
Class I, Zone 2
Category 3G
EPL Gc
Class I, Zone 0
Class I, Zone 1
Category 1G
EPL Ga
Class I, Zone 1
Class I, Zone 1
Class I, Zone 1
EPL Gb
Category 2G
Class I, Zone 2
Class I, Zone 2
Category 3G
EPL Gc
Class I, Zone 1
Class I, Zone 1
Category 2G
EPL Gb
Category 3G
EPL Gc
ISA 60079-15
CSA C22.2 No. 60079-15
EN 60079-15
IEC 60079-15
ISA 60079-18
CSA C22.2 No. 60079-18
EN 60079-18
IEC 60079-18
ISA 60079-18
ISA 60079-18
CSA C22.2 No. 60079-18
IEC 60079-18
EN 60079-18
ISA 60079-18
CSA C22.2 No. 60079-18
EN 60079-18
IEC 60079-18
ISA 60079-6
CSA C22.2 No. 60079-6
EN 60079-6
IEC 60079-6
EN 60079-6
IEC 60079-6
No arcs,
sparks or
hot surfaces
Recognized product certification marks
U.S.
Canada
C
EU (ATEX)
FM Approvals can also issue IECEx Test Reports, Quality Assessment Reports and Certificates of Conformity.
C
US
C
US
Zone 1
Zone 2
Zone 0
Zone 1
Zone 2
Division 2
Zone 1
Zone 2
Division 2
Division 1
Zone 0
Division 1
Equipment Grouping
Typical gas
Acetylene
Hydrogen
Ethylene
Propane
Methane
Contain
the explosion
and extinguish
the flame
US (NEC® 505)
CA (CEC Section 18)
EU
IEC
US (NEC® 500)
CA (CEC Annex J)
Group IIC
Class I/Group A
(Group IIB + H2)
Class I/Group B
Group IIB
Class I/Group C
Group IIA
Class I/Group D
Group I*
Mining*
*Not within scope of NEC . Under jurisdiction of MSHA. Not within scope of CEC.
®
Temperature Class
Marking
450°C
300°C
280°C
260°C
230°C
215°C
200°C
180°C
165°C
160°C
135°C
120°C
100°C
85°C
Limit
energy of
sparks
and surface
temperature
US (NEC® 505)
CA (CEC) Section 18)
EU
IEC
US (NEC® 500)
CA (CEC Annex J)
T1
T1
T2
T2
T2A
T2B
T2C
T2D
T3
T3
T3A
T3B
T3C
T4
T4
T4A
T5
T5
T6
T6
Ingress Protection (IP) Codes
First characteristic Numeral
Second characteristic Numeral
Protection against solid bodies
Protection against liquid
0
1
2
3
4
5
6
7
8
9
Keep
flammable
gas out
FM Approvals is your global conformity assessment solution
Market
Zone 0
IEC classification per IEC 60079-10-1
EU classification per EN 60079-10-1
US classification per ANSI/NFPA 70 National Electrical Code® (NEC®) Article 500 or Article 505
CA classification per CSAC22.1 Canadian Electrical Code (CEC) Section 18 or Annex J
ISA 60079-15
CSA C22.2 No. 60079-15
IEC 60079-15
FM 3620 (NFPA 496)
NFPA 496
FM 3620 (NFPA 496)
NFPA 496
FM 3620 (NFPA 496)
NFPA 496
ISA 60079-2
CSA C22.2 No. 60079-2
EN 60079-2
IEC 60079-2
ISA 60079-2
CSA C22.2 No. 60079-2
EN 60079-2
IEC 60079-2
ISA 60079-2
CSA C22.2 No. 60079-2
EN 60079-2
IEC 60079-2
Note 3: For associated equipment used with pressurized equipment, such as a pressurization control system installed within the hazardous
location, the symbol for the Type of Protection is enclosed within square brackets e.g. Ex d [p] IIC T4 Gb.
Note 4: The associated equipment not suitable for installation in a hazardous location, both the symbol “Ex” or “AEx” and the symbol “p”
are enclosed within the same square brackets, e.g. [Ex p]. In this case, a temperature class is not included.
Restricted Breathing
Gc
Standard
Note 1: For associated intrinsically safe apparatus suitable for installation in a hazardous location, the symbols for the type of protection
“ia” or “ib” are enclosed within square brackets, e.g. Class I, Zone 1, AEx d [ia] IIC T4.
Note 2: For associated intrinsically safe apparatus not suitable for installation in a hazardous location, both the symbol “Ex” or “AEx” and
the symbol for the type of protection “ia” or “ib” are enclosed within the same square brackets, e .g. [AEx ia] IIC; in this case, a temperature
class is not included.
Limited Energy
Identification Number of Notified Body
Involved in Production Control Stage
AEx
Ex
Ex
Ex
AEx e (or AEx eb)
Ex e
Ex e (or Ex eb)
Ex e (or Ex eb)
Ex ec
Ex ec
(NI)
(NI)
AEx nA (or AEx nAc)
Ex nA
Ex nA (or Ex nAc)
Ex nA (or Ex nAc)
(XP)
(XP)
Ex da
Ex da
AEx d (or AEx db)
Ex d
Ex db
Ex db
Ex dc
Ex dc
AEx q (or AEx qb)
Ex q
Ex q (or Ex qb)
Ex q (or Ex qb)
AEx nC (or AEx nCc)
Ex nC
Ex nC (or Ex nCc)
Ex nC (or Ex nCc)
(I.S.)
(I.S.)
AEx ia
Ex ia
Ex ia
Ex ia
AEx ib
Ex ib
Ex ib
Ex ib
AEx ic
Ex ic
Ex ic
Ex ic
Market Application
No protection
No protection
Objects greater than 50mm
Vertical (90˚) dripping water
Objects greater than 12mm
75˚ to 90˚ dripping water
Objects greater than 2.5mm
Sprayed water
Objects greater than 1mm
Splashed water
Dust-protected
Water jets
Dust-tight
Heavy seas
Temporary immersion
Continuous immersion
High pressure/temperature water jet
Approximate U.S. enclosure type equivalent to IPXX
Type
IP
Type
IP
Type
1 10
3S 54
6 and 6P 67
2 11
4 and 4X 55
12 and 12K 52
3 54
5 52
13 54
3R 14
Acronyms
ATEX
CA
CEC
EPL
EU
IEC
I.S.
MSHA
NFPA
NEC
US
Atmosphère explosible
Canada
Canadian Electrical Code (CSA C22.1)
Equipment Protection Level
European Union
International Electrotechnical Commission
Intrinsic Safety
Mine Safety and Health Administration
National Fire Protection Association
National Electrical Code (NFPA 70)
United States of America
IP