scope:

It is recognized that there are cargo and portable tanks that conform with the specification requirements of DOT and TC that are used in services beyond the jurisdiction of either of these authorities. In such cases, it is recommended that international, state, provincial, local, or other authorities having jurisdiction over these containers use this publication to determine adequate PRD requirements provided that the cargo and portable tanks are charged with gas and maintained in accordance with DOT or TC regulations.

It is further recognized that there may be cargo and portable tanks used in services not within the jurisdiction of DOT or TC that do not conform to the specification requirements of either authority. It is recommended that the authorities having jurisdiction over such cargo and portable tanks use this publication to determine PRD requirements provided that such cargo and portable tanks are considered by the authority as having a construction at least equal to the equivalent DOT or TC specification requirements, and further provided that the cargo and portable tanks are charged with gas and maintained in accordance with DOT or TC regulations.