USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Significant Regulatory Guidance

Legacy ID
976
Show Effective Date
Off
Significant Regulatory Guidance
Yes

Pipeline Safety: National Pipeline Mapping System

This document advises gas transmission pipeline operators, hazardous liquid pipeline operators, and Liquefied Natural Gas (LNG) plant operators of voluntary changes pertaining to submittal dates and Operator ID numbers for National Pipeline Mapping System (NPMS) submissions. 

Pipeline Safety: Lessons Learned From the Release at Marshall, Michigan

PHMSA is issuing an advisory bulletin to inform all pipeline owners and operators of the deficiencies identified in Enbridge’s integrity management (IM) program that contributed to the release of hazardous liquid near Marshall, Michigan, on July 25, 2010. Pipeline owners and operators are...

Pipeline Safety: Internal Corrosion in Gas Transmission Pipelines

The Office of Pipeline Safety (OPS) is issuing this bulletin to owners and operators of natural gas transmission pipeline systems to advise them to review their internal corrosion monitoring programs and operations. Operators should consider factors that influence the formation of internal...

Pipeline Safety: Gas and Hazardous Liquid Pipeline Mapping

The Research and Special Programs Administration’s (RSPA) Office of Pipeline Safety (OPS) is issuing this advisory to gas distribution, gas transmission, and hazardous liquid pipeline systems. Owners and operators should review their information and mapping systems to ensure that the operator...

Pipeline Safety: Definition of Onshore Gas Gathering Lines

RSPA is issuing this advisory bulletin to owners and operators of natural gas pipeline facilities to confirm the standards the Research and Special Programs Administration Office of Pipeline Safety (OPS) uses to classify natural gas gathering lines.