PHMSA - Cylinders

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.

Approvals Search

Terminated Approvals

3AL Cylinder Information

Report and Information on DOT 3AL Cylinders

Authorized Manufacturers and Requalifiers

	Independent Inspection Agencies (XLS)
	DOT Cylinder Requalification Program within the U.S.

	Approved Foreign Manufacturers - Updated September 2010
	Manufacturers of DOT Cylinders

Designated Approval Agencies for UN Portable Tanks DOT Specification IM 101/102 and MEGC's

	Authorized DOT Cylinder Requalifiers (International)
	(under construction)

Procedures & Applications

The following is a list of procedures and applications related to Cylinders.

Procedures for Application for Approval to Requalify DOT Cylinders (US and Foreign)

Application for Facility Registration to Requalify Cylinders by Visual Inspection Method Only

Instructions for submitting HM74 Advanced Deposits and Updated Electronic Funds Transfer Form

Application for Approval of Foreign DOT Cylinder Requalification Facility

Mobile Unit Form

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.

81 FR 48977 - NPRM

PHMSA-2011-0140 (HM-234): Hazardous Materials: Miscellaneous Amendments Pertaining to DOT-Specification Cylinders (RRR)

Jul 26, 2016

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