초록 ▼

The invention is directed to a double-container unit for transporting and storing radioactive waste such as irradiated nuclear reactor materials. The double-container unit includes an outer shielding container and an inner storage container made of steel for the gas-tight inclusion of the radioactiv

The invention is directed to a double-container unit for transporting and storing radioactive waste such as irradiated nuclear reactor materials. The double-container unit includes an outer shielding container and an inner storage container made of steel for the gas-tight inclusion of the radioactive materials to be stored. The outer shielding container provides the required shielding and mechanical security during handling and transport of the unit. In order to simplify the assembly and manipulation of such a double-container unit, an intermediate ring is seated in the loading opening of the shielding container and is joinable with this container. A shielding cover is attachable to the intermediate ring for closing the shielding container.

대표청구항 ▼

A double-container unit for transporting and storing radioactive waste such as irradiated nuclear reactor materials, the double-container unit comprising: an inner storage container sealed gas-tight for storing the radioactive waste; an outer shielding container for holding the inner storage contain

A double-container unit for transporting and storing radioactive waste such as irradiated nuclear reactor materials, the double-container unit comprising: an inner storage container sealed gas-tight for storing the radioactive waste; an outer shielding container for holding the inner storage container therein and for providing mechanical security and shielding for said inner storage container during the handling and transport of said unit, said outer shielding container including a vessel having a base and a wall extending upwardly from said base so as to define with the latter a cavity for receiving said inner storage container therein; said wall terminating in an upper end portion defining the opening of said vessel; a shielding cover for covering said opening; an intermediate annular member seated in said upper end portion and interposed between said cover and said vessel; joining means for joining said intermediate annular member to said upper end portion of said vessel; attachment means for attaching said shielding cover to said intermediate annular member; said vessel defining a longitudinal axis and said intermediate annular member having an annular projection extending inwardly toward said longitudinal axis so as to be disposed above the outer peripheral edge of said inner storage container to receive an impact load from said inner storage container caused by a movement of the latter within said outer shielding container; said inner storage container having an upper end face region within said outer peripheral edge thereof; said shielding cover having a bottom end face adjacent said upper end face region when said shielding cover is seated in said vessel; and, gap means formed between said bottom end face and said upper end face region for preventing direct contact therebetween in the event of said impact load.