Archived Rulemaking: Extension of Placarding Compliance Date

Archived Rulemaking: Hydrogen Peroxide Water Solutions Transported by Vessel

Archived Rulemaking: Conversion of Exemptions

Archived Rulemaking: DOT 17H-Modifications

Archived Rulemaking: Interlocking Couplers and Restriction of Capacity of Tank Cars

Archived Rulemaking: Extend Service Life - 3HT Cylinders

Archived Rulemaking: Extend Service Life - 3HT Cylinders

DIMP - Performance Measures - Data Analysis Procedure/Report

This report describes how the Pipeline and Hazardous Materials Safety Administration (PHMSA) will process and analyze data on mechanical fitting failures that result in an incident, collected from operators of gas distribution pipelines as required in §192.1009. This report also includes...

DIMP - Southwest Gas Response to CA PUC Report

DIMP - Southern California Gas Company and San Diego Gas & Electric Company Response to CA PUC Report