Closure system for a spent fuel storage cask

Details Closure system for a spent fuel storage cask Closure system for a spent fuel storage cask

1984-10-31

1987-01-13

Anderson, Bruce C.

Radiant energy

Radiation controlling means

Shielded receptacles for radioactive sources

376272, G21F 500

Patent

active

046366458

ABSTRACT:
A closure system for a storage cask containing spent nuclear fuel has redundant mechanical seals to temporarily close the cask during development, testing, and refinement thereof, when it is occasionally necessary to open the cask, and redundant welded seals to supplement the mechanical seals when development is completed and the cask is permanently sealed during long-term storage. The closure system includes a primary cover which cooperates with an O-ring to provide a mechanical seal and which includes a canopy element that can be welded to the cask base element if a permanent seal is desired. The closure system also includes a secondary cover which cooperates with an additional O-ring to provide an additional mechanical seal and which is configured to receive an additional canopy element in the event that an additional welded seal is desired. The closure system permits the cask to be developed, tested, and refined using the same closure system that will be installed during actual use.

REFERENCES:
patent: 3801454 (1974-04-01), Kumph
patent: 3926722 (1975-12-01), Dupen
patent: 4310034 (1982-01-01), Guilloteau et al.
patent: 4445042 (1984-04-01), Baatz et al.
patent: 4447729 (1984-05-01), Doroszlai et al.
Operation and Maintenance Manual OMM-051-001, dated Feb. 1, 1976, 35 pages.

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