DOT 3M cylinders for transporting Methane
Pipeline and Hazardous Materials Safety Administration · Oct 1, 1993 · Reference No. 93-0342
Interprets: 49 CFR § 173.34, 49 CFR § 173.301, 49 CFR § 173.302, 49 CFR § 178.37
This is in reference to your letter dated March S, 1993, to Mr. Copala Vinjamuri, Office of Hazardous Materials Technology, and our telephone conversation on September 30, concerning the use of DOT 3M cylinders for transporting Methane, compressed or Natural gas, compressed (with a high methane content), UNl97l.
Authorization for the use of a DOT 3M cylinder for transportation of compressed methane or compressed natural gas is' contained in § 173.302(a)(1) of the Hazardous Materials Regulations (49 CFR Parts 171-180). A DOT 3M cylinder must be constructed in full conformance with § 178.37. Requirements for cylinder requa1ification and filling limits are prescribed in §§ 173.34 and 173.301(e) respectively.
I trust this information satisfies your inquiry.
A letter of interpretation applies the regulations to the facts the requester described. It isn’t a regulation and isn’t legal advice. The agency’s copy.