Q. How do I get Pipeline and Hazardous Materials Safety Administration (PHMSA) approval?


  • View the Approvals webpage provided by the Pipeline and Hazardous Materials Safety Administration (PHMSA)

  • View the webpage provided by the Approvals and Permits Division of PHMSA who issue Special Permits and Approvals

    • Phone Pressure Vessel and Cylinder: (202) 366-4512 

    • Phone Special Permits: (202) 366-4535

    • Phone Energetic Materials (202) 366-3987

    • Email webform

What do Special Permits do?

  • Allow for alternative requirements or variances from the Hazardous Materials Regulations (HMR)
  • Permits and approvals must maintain safety levels at least equal to those required under Federal hazmat law
  • If a required safety level does not exist, safety levels must be consistent with the public interest
  • Permits and approvals are written consent from the Associate Administrator of PHMSA

Questions? Contact the Office of Hazardous Materials Safety Approvals and Permits Division


  • Last Updated Aug 02, 2017
  • Views 10
  • Answered By David Martin

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