Method and apparatus for storing nuclear fuel assemblies in maxi

Details Method and apparatus for storing nuclear fuel assemblies in maxi Method and apparatus for storing nuclear fuel assemblies in maxi

1978-05-26

1979-12-04

Dixon, Harold A.

Radiant energy

Radiation controlling means

Shielded receptacles for radioactive sources

176 30, 250518, G21F 500

Patent

active

041773861

ABSTRACT:
A maximum density storage rack is provided for long term or semipermanent storage of spent nuclear fuel assemblies. The rack consists of storage cells arranged in a regular array, such as a checkerboard array, and intended to be immersed in water. Initially, cap members are placed on alternate cells in such a manner that at least 50% of the cells are left open, some of the caps being removable. Spent fuel assemblies are then placed in the open cells until all of them are filled. The level of reactivity of each of the stored fuel assemblies is then determined by accurate calculation or by measurement, and the removable caps are removed and rearranged so that other cells are opened, permitting the storage of additional fuel assemblies in a pattern based on the actual reactivity such that criticality is prevented.

REFERENCES:
patent: 3859533 (1975-01-01), Suvanto
patent: 4034227 (1977-07-01), Soot
patent: 4042828 (1977-08-01), Rubinstein et al.
patent: 4063999 (1977-12-01), Wade
patent: 4088897 (1978-05-01), Soot

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