This Content Component encountered an error
 
 
PHMSA Home
stamp of word 'OK'
Approvals & Permits

The Pipeline and Hazardous Materials Safety Administration has the primary responsibility for the issuance of DOT special permits and approvals for hazardous materials and for natural gas and hazardous liquid pipelines. Special permits authorize a person to perform a function that is not currently authorized or not perform a function currently required under the PHMSA regulations. Approvals authorize the transportation of designated hazardous materials (i.e. explosives) or the performance of a designated hazardous materials function (i.e. cylinder retester) under the PHMSA regulations.

Hazardous Materials Safety

PHMSA has the primary responsibility for the issuance of DOT special permits and approvals to the Hazardous Materials Regulations (HMR). A special permit is a document which authorizes a person to perform a function that is not currently authorized under the authority of the HMR. An approval is a similar document that is issued under specific authority granted in the HMR (for example this authority covers the approval of explosives, organic peroxides, and chemical oxygen generators). Follow the links below for further information regarding the functions of each Office and the similarities and differences between special permits and approvals.

If you have any questions, please contact the Office of Hazardous Materials Special Permits and Approvals from the link below.

Pipeline Safety

An operator of natural gas or hazardous liquid pipelines may request a Special Permit from satisfying Federal pipeline safety regulations if they feel compliance would not be appropriate due to unique circumstances. PHMSA may grant a Special Permit, at its discretion, if sufficient alternative safeguards to the public safety are implemented.

If you have any questions regarding pipeline special permits, please see the Special Permits (formerly "Waivers") link below.

Careers  |  Contact Us  |  No Fear  |  Privacy Policy  |  FOIA  |  Accessibility  |  FAQs  |  Web Policies  |  Site Map  |  Download Acrobat