USDOT Pipeline and Hazardous Materials Safety Administration
Engineering & Research DivisionOffice of Pipeline Safety
OST
PHMSA
OHMS OPS
OIG
FHWA
FRA
FAA
SLSDC
NHTSA
MARAD
FMCSA
FTA STB
U. S. Department of Transportation (DOT)
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Office of Hazardous Materials SafetyOffice of Pipeline Safety
PHMSA Mission
Our mission is to protect people and the environment by advancing the safe transportation of energy and other hazardous materials that are essential to our
daily lives.
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What PHMSA OPS Regulates
System Type Miles % Miles # Operators
Hazardous Liquid Pipeline 199,3347,677 Tanks 7% 456
Gas Transmission Pipeline 301,810 11% 1,020
Gas Gathering Pipeline 17,663 1% 367
Gas Distribution Pipeline(Mains & Services ) 2,168,599 81% 1,373
Total (Pipeline) 2,687,406 100%Some Operators
have multiple System Types
Liquefied Natural Gas 115 Plants 205 Tanks 83
Some of PHMSA OPS’sRoles and Responsibilities
• Development and Implementation of Safety Regulations– 49 CFR Part 192 – Transportation of Natural and Other Gas by
Pipeline– 49 CFR Part 195 – Transportation of Hazardous Liquids by Pipeline
• Perform Comprehensive Inspections• Monitor and Enforce Compliance
– Require remedial actions– Assess civil penalties – Criminal referral
Underlying Principles• Operator responsibility to understand and safely manage the
risks (safety conditions) associated with their pipelines • PHMSA’s primary role is to establish minimum safety
standards (regulations) and to verify that the operators perform to these standards
• PHMSA also strives to impact operator performance beyond mere compliance with the regulations
• Focus is on SAFETY PERFORMANCE
Linepipe: X70 & X80 below SMYS• 2009 Advisory Bulletin (ADB‐09‐01)
http://www.phmsa.dot.gov/pipeline/regs/advisory‐bulletin
• Inconsistent chemical and mechanical properties • Poor mill rolling practices
Girth Weld Quality & Misalignment2010 Advisory Bulletin (ADB‐10‐03) Girth weld quality issues due to improper transitioning, misalignment, and welding practices of large diameter linepipehttp://www.phmsa.dot.gov/pipeline/regs/advisory‐bulletin
Below failure @ 65% SMYS
Segmenting Induction Bends
Tangent EndTangent End
EndTolerances
BodyTolerances
Cross‐section of Induction Bend
• Avoid segmenting bends (order the exact bend angle or use cold field bends when possible)
• When cutting bends, use segmentable bends with tighter body tolerances, confirm acceptable end dimensions, and use transition pipe pups
Segmenting Bends• Best practice: Do not segment bends. Very difficult to do properly.
Order bends to final angle & utilize cold field bends.• “Guidance for Specification and Purchase of Segmentable
Induction Bends and Elbows (Phase 1 Final Report)”– http://www.ingaa.org/File.aspx?id=18182
• “Guidance for Field Segmentation and Welding of Induction Bends and Elbows (Phase 2 Final Report)”– http://www.ingaa.org/File.aspx?id=18183