Molten tin reprocessing of spent nuclear fuel elements

Details Molten tin reprocessing of spent nuclear fuel elements Molten tin reprocessing of spent nuclear fuel elements

1980-12-19

1983-07-12

Carter, Herbert T.

Compositions

Radioactive compositions

423 4, 423 5, 423 11, G21C 1948

Patent

active

043929958

ABSTRACT:
A method and apparatus for reprocessing spent nuclear fuel is described. Within a containment vessel, a solid plug of tin and nitride precipitates supports a circulating bath of liquid tin therein. Spent nuclear fuel is immersed in the liquid tin under an atmosphere of nitrogen, resulting in the formation of nitride precipitates. The layer of liquid tin and nitride precipitates which interfaces the plug is solidified and integrated with the plug. Part of the plug is melted, removing nitride precipitates from the containment vessel, while a portion of the plug remains solidified to support the liquid tin and nitride precipitates remaining in the containment vessel. The process is practiced numerous times until substantially all of the precipitated nitrides are removed from the containment vessel.

REFERENCES:
patent: 3843765 (1974-10-01), Anderson et al.
patent: 3843766 (1974-10-01), Anderson et al.
patent: 4234383 (1980-11-01), Anderson et al.

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