U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration - 1 - U. S. Department of Transportation Pipeline and Hazardous.

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Presentation transcript:

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration U. S. Department of Transportation Pipeline and Hazardous Materials Safety Administration

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration Linda Daugherty Deputy Associate Administrator Policy and Programs Office of Pipeline Safety Aging (Old?) Infrastructure

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration What defines “old”, anyway? If a pipeline is old, is it more risky? Are all types of old pipeline a concern? Are the regulations protective enough? What about replacement/ rehabilitation? - 3 -

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration What is Old – Liquid? 55% installed prior to the regulations in 1970 If installed in ‘70, it is over 40 yrs old. Mostly steel pipe Post-war industry/ population surge - 4 -

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration What is Old – Gas Transmission? 59% installed prior to the regulations in 1970 If installed in ‘50, it is over 60 yrs old. Mostly steel pipe - 5 -

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration What is Old – Gas Distribution? 31% installed prior to the regulations in Older – cast iron, bare steel, copper Newer – plastic Population growth/ city expansions - 6 -

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration Is Older Pipe More Risky? –Aging infrastructure issues: material and techniques prevalent at the time (i.e. vintage) amount of time in service (i.e., service age). –Pipe installed in the 1950’s and 1960’s now have similar incident rates per mile as pipe installed more recently –Pipe installed in or before the 1940’s have a higher incident rate than pipe installed more recently. Not known if higher incident rate is due to vintage issue or service age (over 70 years old) - 7 -

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration What About the Type of Pipe? Steel Pipe (Liquid and Gas Transmission) –Vintage Issues – Steel quality, seam types, welding controls – Service Age Issues: Cycling, maintenance (corrosion prevention), component functionality Cast Iron (Distribution) –Vintage Issues – Construction practices, small diameter (beam strength) –Service Age Issue: External stresses, graphitization - 8 -

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration What About the Type of Pipe? Plastic Pipe (Distribution and some Gas Transmission) –Vintage Issues – Material quality control, installation practices (fusion, rock impingement) –Service Age Issues: Material degradation due to composition or environmental conditions

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration Repair/Rehabilitation/ Requalification/Replacement? DOT Secretary Call to Action –Encouraging ALL stakeholders to get involved. Different states = different risks and different priorities –Need to focus on highest risk pipe in each state –Older pipe can be difficult to assess/repair –Very expensive to consumers –Potentially very disruptive to the public

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration Are the Regulations Protective Enough ? General. (Natural Gas Pipelines) (b) Each segment of pipeline that becomes unsafe must be replaced, repaired, or removed from service. (c) Hazardous leaks must be repaired promptly General requirements. (Liquid Pipelines) (a) No operator may operate or maintain its pipeline systems at a level of safety lower than that required by this subpart and the procedures it is required to establish under § (a) of this subpart

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration Are the Regulations Protective Enough ? PHMSA is seeking YOUR input Pipeline Safety: Safety of Gas Transmission Pipelines - Advanced Notice of Proposed Rulemaking (ANPRM) –Comment Period Extended to January 20, 2012 Pipeline Safety: Safety of On-Shore Hazardous Liquid Pipelines –Working on Notice of Proposed Rulemaking

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration U. S. Department of Transportation Pipeline and Hazardous Materials Safety Administration