SALVAGING THE LEPSE TENDER

摘要

The basic problems of salvaging the Lepse tender of the Murmansk Shipping Company are examined. The main sources of nuclear and radiation danger are determined, the characteristics of their structural features which prevent the appearance of a spontaneous reaction are given, the consequences of long-time storage of spent fuel assemblies are described, and different variants of their removal from storage are proposed. A computational validation of the required degree of subcriticality of the spent nculearfuel and an assessment of possible accidents, including accidents accompanying sinking of the vessel at its permanent base, are given. The salvaging steps are described, the bottlenecks are determined, schemes for handling the vessel are validated, and the radiation load on the workers is estimated.