Arrangement for storing spent nuclear fuel rods at a reactor sit

Details Arrangement for storing spent nuclear fuel rods at a reactor sit Arrangement for storing spent nuclear fuel rods at a reactor sit

1982-07-26

1984-10-02

Schafer, Richard E.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

Storage container systems for new and/or irradiated core...

29400N, 29468, 53246, 206443, G21C 1900

Patent

active

044747276

ABSTRACT:
Apparatus and method for providing on-site storage of all spent fuel rods removed from a nuclear reactor during its lifetime. Spent fuel rods are removed from spent fuel assemblies and stored in a container in a vertical position, and on a pitch which is less than the pitch of the fuel rods when in a fuel assembly. The removed fuel rods preferably are positioned in a triangular array, and with most fuel rods having line contact along their length with adjacent fuel rods. This arrangement imparts support to all fuel rods in the container and thereby maximizes the available storage space for fuel. To facilitate the loading process, the vertically disposed fuel rods may be installed on steps in the container or on a flat bottom plate therein, all with the assistance of a guidance plate which orients and directs each fuel rod into the container. Skeleton components in the fuel assembly, such as grids, used for holding the fuel rods in position are either cut or squeezed into small volume sections and stored in similar containers at the reactor site, or alternatively, shipped to burial sites.

REFERENCES:
patent: 3807018 (1974-04-01), Ehrman et al.
patent: 4056920 (1977-11-01), Shields
patent: 4209420 (1980-06-01), Larker

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