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

G - Physics

21

C

359/37

G21C 19/46 (2006.01) G21C 19/48 (2006.01)

Patent

CA 1157579

MOLTEN TIN REPROCESSING OF SPENT NUCLEAR FUEL ELEMENTS Abstract of the Disclosure 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.

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