[Header] PHMSA - U.S. Department of Transportation - Pipeline and Hazardous materials Safety Adminis
Frequently Asked Questions (FAQs)

Frequently Asked Questions about Pipeline topics.

General Pipeline FAQs
Basic information about the use of pipelines and their contents.
PHMSA and Pipelines
What PHMSA does for pipeline safety and who else may have authority over pipelines.
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Pipeline Safety Resources
National Pipeline Mapping System
View maps of natural gas transmission and hazardous liquid pipelines, LNG facilities, and breakout tanks by county.
Integrity Management Program (IMP)
Programs for Liquid, Gas, Distribution, and Rulemaking. View the DIMP Webcast.
Pipeline Emergencies First Reponder Training
FREE Comprehensive pipeline emergencies training materials for first responders
Pipeline Operator Registration System
Online data entry and Operator Registration System
Drug & Alcohol Program information
Policy and investigation to deter and detect illegal drug use and alcohol misuse in the pipeline industry.