Applicability of CGA Publications to Cylinders under the HMR
Pipeline and Hazardous Materials Safety Administration · Jun 7, 2010 · Reference No. 10-0100
Interprets: 49 CFR § 171.7(a)(2), 49 CFR § 173.301(a)(2)
This responds to your April 19, 2010 email regarding the applicability of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) to a particular CGA publication. Specifically, you ask whether the HMR requires testing of cylinder valves to be in accordance with the Compressed Gas Association publication, CGA V-9, "Standard for Compressed Gas Cylinder Valves."
The answer is no. Currently, § 171.7(a)(2) of the HMR do not incorporate by reference the CGA V-9 publication. However, the outside of cylinders are required by § 173.301(a)(2) to be visually inspected prior to each filling. Any cylinder having a defective valve or other detrimental damage may not be filled and offered for transportation.
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.