Containers manufactured to be United Nations (UN) or DOT certified must be accompanied by manufacturer specific Closure Instructions. These instructions indicate the process which a filler must follow in order to properly secure the container in accordance with the Testing Process. Torque, dimensional measurements and visual safeguards are a part of each closure technique. However, it is the responsibility of the filler to not only follow these instructions, but also to REJECT a container that does not appear to be properly closed. A drum torqued at more or less than the prescribed foot pounds, a ring gap greater than or less than the specified distance, or gaskets which appear not to be properly seated onto the bead, should be rejected and returned to the manufacturer. Just as the UN and DOT expects each filler to close a drum properly, they also expect the filler to respect safe transportation guidelines and reject drums which cannot be correctly secured.
DOT/UN