METHOD FOR LONG-TERM STORAGE OF WASTE NUCLEAR FUEL

摘要

The method of the long-term storage of waste nuclear fuel of a nuclear reactor consists in that, first, prior to the waste fuel assembly of the nuclear reactor being disposed in a steel case and latter being hermetically sealed with a cover, a material which is chemically inert in relation to the material of the casing of the fuel elements of the waste fuel assemblies, to the material of the body of the case, to air and to water, is arranged in the steel case, the steel case is mounted in a heating device, the steel case is heated along with the material arranged in said steel case until said material passes into a liquid state, and then the waste fuel assembly which has been extracted from the nuclear reactor is arranged in the steel case in such a way that the fuel pat of the fuel elements of the waste fuel assemblies is lower than the level of the liquid material in steel case, the waste fuel assembly is fixed in this position, and the case is hermetically sealed the cover, whereupon the hermetically sealed case is extracted from the heating device and mounted in a storage facility which is cooled by atmospheric air. This technical solution makes it possible to ensure long-term safe storage of waste fuel assemblies of a nuclear reactor in storage facilities with cooling using atmospheric air, in particular with natural circulation of atmospheric air, and also to transport the waste of the fuel assemblies to a factory for processing so as to ensure an increased level of safety.