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Cylinders

Information about gaining approval to manufacturer or requalify cylinders of various types as well as listings of authorized cylinder manufacturers and requalifiers.

Approvals Search Tools

The approvals search tool is a powerful and effective method to determine the current status of a submission, existing approval, pending approval, terminated approval or expired approval.

If you need information concerning application status that is not available in this search, please contact: approvals@dot.gov or call 202/366-3987.

3AL Cylinder Information
Cylinder-Related Federal Register Documents
The following Federal Register postings are cylinder-related and primarily consist of NPRMs, Final Rules, and Safety Advisory Notices within the last 5 years.
 
78 FR 58605 PHMSA-2013-0195 (Notice No. 13-12): Safety Advisory: Unauthorized Filling of Compressed Gas Cylinders Sep 24, 2013
 
78 FR 58604 Notice No. 13-16: Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders Sep 24, 2013
 
78 FR 42817 PHMSA-2013-0176 (Notice No. 13-11): Safety Advisory: Unauthorized Filling of Compressed Gas Cylinders Jul 17, 2013
 
78 FR 33891 PHMSA-2013-0126 (Notice No. 13-8): Safety Advisory: Compressed Gas Cylinders That Have Not Been Tested Properly Jun 5, 2013
 
78 FR 16045 PHMSA-2013-0019 (Notice No. 13-3): Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders Mar 13, 2013
 
78 FR 16044 PHMSA-2013-0017 (Notice No. 13-2): Hazardous Materials: Composite Cylinder Standards; Public Meeting Mar 13, 2013
 
77 FR 64590 PHMSA-2012-0170 (Notice No. 12-7): Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders Oct 22, 2012
 
77 FR 31551 - ANPRM PHMSA-2011-0140 (HM-234): Hazardous Materials: Miscellaneous Amendments Pertaining to DOT Specification Cylinders (RRR) May 29, 2012
 
77 FR 1975 PHMSA-2011-0328 (Notice No. 11-15): Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders Jan 12, 2012
 
76 FR 71124 PHMSA-2011-0241 (Notice No. 11-10); Safety Advisory: Unauthorized Marking of Compressed Gas Cylinders Nov 16, 2011
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