Requalification Identification Number Application for External Visual Inspections

How to Apply (Visual-Only Cylinder Requalification)

Applicants have various options for submitting their request for new, renewal, modification or termination of the Visual Inspection Registration.

Applicant may mail their application by the US Postal service to the following address:
U.S. Department of Transportation
PHMSA – East Building, PHH-33
1200 New Jersey Avenue, SE
Washington, DC 20590

Applicant may fax their application to the following fax numbers:
202-366-3753
202-366-3308

Applicant may email their application to the following email address:
[email protected]

Applicant may submit their application by the PHMSA online Portal Database.
(Note: When processing online, upload a separate application to the Portal Database.)
Webpage Address: https://portal.phmsa.dot.gov/PHMSAPortal2
Submit a Visual Only Cylinder Requalification Approval requests using the PHMSA Portal
Application for Visual Only Cylinder Requalification