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

PHMSA Guidance

951

National Pipeline Mapping System FAQs

This FAQ page is continuously updated. Please start here for answers to any questions you have about the NPMS. If you are unable to find what you're looking for here, contact the NPMS National Repository at npms@dot.gov.

Gathering Pipelines (FAQs)

Education and prevention are key components of pipeline safety, so in addition to learning more about gathering pipelines, the public should also remember to call 811, a nationwide toll-free number, before beginning a digging project to learn the location of pipelines that may be underground....

Advisory Bulletin Number ADB-93-04

fr058222.pdf

RSPA requests that owners and operators of gas and hazardous liquid pipelines and other persons requesting interpretation of regulations from the Office of Pipeline Safety (OPS) Washington Office include the following information in the request: - Specify the regulations...

Guidance for the Safe Packaging and Transportation of COVID-19 Materials

Infectious substances, such as certain COVID-19 tainted materials, can pose a risk to health, safety, and property if packaged and transported incorrectly.  When transporting such materials, it is extremely important to consult PHMSA’s Hazardous Materials Regulations to help minimize risk...

PHMSA COVID Frequently Asked Questions

This page provides answers to frequently asked questions regarding PHMSA’s Hazardous Materials Regulations (HMR) and Coronavirus Disease 2019 (COVID-19) related guidance published on the PHMSA website.