FUEL ASSEMBLY STORING METHOD AND FUEL ASSEMBLY STORAGE BODY

摘要

PROBLEM TO BE SOLVED: To increase an effect of neutron shielding or heat removal so as to transport and store a MOX spent fuel by a cask which is conventionally used.

SOLUTION: A basket forming a plurality of storage spaces aligned in a lattice shape is stored in a cask body, and spent fuel assembles are stored in each of the plurality of the storage spaces. A MOX spent fuel assembly 40 is stored in each storage space of a part of a plurality of center storage spaces except for the outermost peripheral storage space out of the plurality of the storage spaces. A uranium spent fuel assembly 41 is stored in each of a plurality of the storage spaces which do not store the MOX spent fuel assembles 40 out of the plurality of the storage spaces. The MOX spent fuel assemblies 40 are stored only in the storage spaces which are not adjacent to each other.

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