CGA P-17:2018

Transportation regulations in the United States and Canada require the retesting of cargo and portable tanks at prescribed intervals. Retesting may also be necessary when performing repairs and/or modifications to cargo and portable tanks. Personnel meeting the requirements of the regulations of a tank’s base country shall perform the retesting at facilities approved by the appropriate authorities.
This procedure is a recommended method for performing pneumatic retesting of cargo and portable tanks at prescribed intervals. It supplements the applicable requirements of Title 49 of the U.S. Code of Federal Regulations (49 CFR) and CSA B620, Highway tanks and TC portable tanks for the transportation of dangerous goods.