SAFE TRANSPORTATION OF HAZARDOUS MATERIALS

摘要

A shipping container overpack for safe transportation of radioactive and other hazardous materials provides a leakproof receptacle for containing and protecting the material to be shipped against accidental release and dispersal into the surrounding environment. The receptacle is of conventional size and shape for shipping containers and has spaced inner and outer shells with a layer of foamed polyurethane occupying the space therebetween to provide sealing, insulation and reinforcement. The polyurethane foam is rigidly compressible and adheres to and reinforces the spaced inner and outer shells to provide a stress skin structure. Gusset plates are secured to the inner surface of the outer shell in covering relation to the corners and edges, defining a reinforcing framework of triangular cross-section tubular elements. Relatively rigid polyurethane foam is containd within the tubular elements to add further reinforcement and redundant sealing capacity.