HYDROMAXUSA HYDROMA

HYDROMAX USA
Cross Bore Elimination
HYDROMA
X USA
Advanced Water, Wastewater and Gas Data Collection
Advanced Water, Wastewater and Gas Data Collection
Experienced Personnel
|
Advanced Technology
|
Commitment to Clients
understanding the present
to protect the future
understanding the present
to protect the future
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320 Colorado Ave
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2549 Bryant St
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44-1-12-38
Sewer Laterals
Cleaning Required
2570 Bryant St
2607 Bryant St
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2590 Bryant St
Gas Service Lateral
Gas Main
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0 5 10
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How do cross bores occur?
While trenchless techniques offer a cost
beneficial installation alternative, they
do not allow the installer to observe if
another utility was intersected; thereby,
facilitating a high potential for creating
cross bores.
44-1-13-21
Cross Bore
Two Way Cleanout
SewerMains
What is a cross bore?
Cross bores are defined as an intersection of an existing underground utility
or underground structure by a second
utility resulting in direct contact between
the transactions of the utilities that compromises the integrity of either utility or
underground structure.
2608 Bryant St
2626 Bryant St
GPS data enables visual confirmation of completed inspections.
How common are cross bores?
In high risk, densely populated areas,
as many as 3 cross bores per mile (of
natural gas distribution mainline) have
been found.
Why are they considered
high risk?
Cross bores can cause sewer blockages
and be easily damaged by pipe cleaning
equipment. This can lead to explosions,
which result in personal property
damage, injuries and, in some cases,
loss of life.
Are cross bores a new problem?
No, according to a 1976 National Transportation Safety Board (NTSB) report of an explosion due to a cross bore, which
resulted in two deaths and four injuries, the NTSB recommended that ”inspections [should be made].... where gas mains
and sewer laterals may be in proximity...”
Are cross bores threats to system integrity?
Yes, in August 2011, the U.S. Department of Transportation’s Pipeline and
Hazardous Materials Safety Administration’s (PHMSA) requirements of
Distribution Integrity Management Program (DIMP) took effect. It is generally agreed by distribution system operators that a cross bore of a gas line
through a sewer is a considered an integrity fault of a gas distribution system.
Are New cross bores preventable?
Yes, through a thorough and comprehensive inspection program, both
new construction and legacy cross bores can be avoided and eliminated.
What solutions are available?
Through the use of modern technologies by well-trained operators, cross
bores can be identified, located, tracked and eliminated.
• Utility Locating
• GPS/GIS Integration
• Lateral Launching from Mainline Sewers
• Pushrod CCTV Crews
• Project Management
How to ensure success of an elimination program?
A reliable program relies on quality data collection in the field,
supported by comprehensive data management and review.
Such programs entail:
• Data QA/QC
• Time-Stamped GPS Data
• 100% Back Office Video Review
• High Confidence Results
• Inspections Independent of Utilities and Contractors
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Potential Cross Bores
Drawing
Verify Requirements with Project Scope
- Potential Cross Bore
Sanitary
Sewer
Manhole
Lateral Sewer
Storm
Water
Catch
Basin
Tap
Mainline Sanitary Sewer
Illegal Downspout
Drain
Structure 1
Private
Public
Sidewalk
Property Line
Structure 2
G as Lateral
City Street
Structure 3
Gas Main
Yard Drain
Storm
Water
Catch
Basin
Wye
Structure 4
Structure 5
Sanitary
Sewer
Manhole
Unconnected
Lateral
© 2011 Copyright Hydromax USA LLC
AllPotential
Rights reserved.
Cross
BoreCross
locations
File name: Potential
Bores Drawing .doc
mhb 12 /20/2011
www.hydromaxusa.com | (502) 548-8965 | [email protected]