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

2020 Memorandum of Understanding Between DOT-PHMSA/DOI-BSEE for OCS Pipelines


The Memorandum of Understanding (MOU) supersedes the MOU dated December 10, 1996, between the Department of Transportation (DOT) and the Department of the Interior (DOI) regarding Outer Continental Shelf (OCS) pipelines.  The MOU identifies responsibilities for different aspects of OCS pipeline oversight consistent with the DOI and DOT authorities over upstream producer-operated pipelines and downstream transporter-operated pipelines, respectively.

The MOU describes the actions the agencies intend to take regarding OCS pipelines, including improved coordination of regulatory responsibilities, information sharing, research and development, training, inspections, investigations, and enforcement. Furthermore, the agencies will keep each other informed of newly discovered or emerging safety issues or concerns and perform joint investigations of incidents involving OCS pipeline segments where either has authority. 

DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact
Last updated: Tuesday, December 22, 2020