Pipeline Safety: Requirement of Valve Installation and Minimum Rupture Detection Standards: Technical Corrections

Pipeline Safety: Safety of Gas Gathering Pipelines: Extension of Reporting Requirements, Regulation of Large, High-Pressure Lines, and Other Related Amendments: Technical Corrections

Oak Ridge National Laboratory Review of PHMSA's Pipeline Special Permit Process

In response to a July 2021 Government Accountability Office report entitled "Information on Keystone Accidents and DOT Oversight," PHMSA selected the Department of Energy’s Oak Ridge National Laboratories to conduct an assessment of various components of PHMSA's pipeline special permit program...

Spills of Diluted Bitumen from Pipelines

Studies for the Requirements of Automatic and Remotely Controlled Shutoff Valves on Hazardous Liquids and Natural Gas Pipelines

Final Report: Leak Detection Study

PHMSA - Working with Tribal Governments

Gas Distribution Integrity Management Program

The Pipeline and Hazardous Materials Safety Administration (PHMSA) published the final rule establishing integrity management requirements for gas distribution pipeline systems on December 4, 2009 (74 FR 63906). The effective date of the rule is...

OQ History

Pipeline Materials

PHMSA currently collects reports from pipeline operators by material categories. These categories include cast/wrought iron, steel, and plastic. Cast or wrought iron pipelines were used from the early days of energy transportation through the 1940s. These pipelines are among the oldest energy...