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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

General

Legacy ID
16
Show Effective Date
Off
Significant Regulatory Guidance
No
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M # Symbol

Current M-Number Listing Current M-Number Listing How to Apply for an M#/Symbol

Submit a M # Symbol Approval requests using the PHMSA Portal

Applicants also have the option of submitting request via email to approvals@dot.gov, or mailed to [Department of...

Visual Only Cylinder Requalification

A cylinder passing requalification by the external visual inspection must be marked in accordance with 49 CFR Part 180.213. Not withstanding the requirements in paragraph (b) and (c) of Section 107.805, a person who only performs inspections in accordance with Section 180.209(g) of Title 49 CFR...

Cylinder Repair / Rebuild

A person must meet the requirements of 49 CFR Section 107.805 to be approved to inspect, test, certify, repair, or rebuild a cylinder in accordance with a DOT specification or a UN pressure receptacle under subpart C of part 178 or subpart C of part 180, or under the terms of a special permit...

Procedures for Application for Approval to Requalify DOT Cylinders

Within the United States

Outside the United States

 

Within the United States The cylinder retester must contact one of the approved Independent Inspection Agencies to arrange for an inspection of their facility.List of Independent Inspection Agencies -- DOT Cylinder...