Ask X3What does 49 CFR 180.211 (Repair, rebuilding and reheat treatment of DOT-4 series specification cylinders) require?
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Short answer
49 CFR 180.211 requires that any repair or rebuilding of a DOT-4 series cylinder be performed by a person holding an approval as specified in 107.805 of this chapter or by a registered facility in Canada. The regulation outlines specific requirements for the repair and rebuilding process, including heat treatment, testing, and inspection.
The rule says
"Any repair or rebuilding of a DOT-4 series cylinder must be performed by a person holding an approval as specified in 107.805 of this chapter or by a registered facility in Canada in accordance with the Transport Canada TDG Regulations (IBR, see 171.7 of this subchapter)." (49 CFR 180.211(a))
A person performing a rebuild function is considered a manufacturer subject to the requirements of this subchapter — 49 CFR 180.211(a).
"Any rebuilt cylinder must be (i) Heat treated in accordance with paragraph (f) of this section; (ii) Subjected to a volumetric expansion test on each cylinder." (49 CFR 180.211(d)(2))
In plain English
The regulation requires that repairs and rebuilds of DOT-4 series cylinders be done by approved personnel or facilities, and that the process includes specific steps like heat treatment and testing. This is to ensure that the cylinders are safe for use and meet the required standards. The regulation also considers a person performing a rebuild function as a manufacturer, subject to the same requirements. In practice, this means that facilities and personnel must follow strict guidelines and maintain detailed records to demonstrate compliance.
What to do
- Ensure that personnel performing repairs and rebuilds of DOT-4 series cylinders hold the required approval or are registered facilities in Canada.
- Develop and maintain a documented procedure for the repair and rebuilding process, including heat treatment, testing, and inspection.
- Verify compliance with 49 CFR 180.211 through regular audits and inspections.
- Maintain detailed records of the repair and rebuilding process, including test results and inspections.