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Title: Molten tin reprocessing of spent nuclear fuel elements. [Patent application; continuous process]

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 te 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.

Inventors:
Issue Date:
OSTI Identifier:
6240941
Assignee:
Dept. of Energy TIC; EDB-81-114911
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; SPENT FUELS; PYROCHEMICAL REPROCESSING; CHEMICAL REACTORS; LIQUID METALS; NITRIDES; PRECIPITATION; TIN; ELEMENTS; ENERGY SOURCES; FLUIDS; FUELS; LIQUIDS; MATERIALS; METALS; NITROGEN COMPOUNDS; NUCLEAR FUELS; PNICTIDES; REACTOR MATERIALS; REPROCESSING; SEPARATION PROCESSES; 050800* - Nuclear Fuels- Spent Fuels Reprocessing

Citation Formats

Heckman, R.A. Molten tin reprocessing of spent nuclear fuel elements. [Patent application; continuous process]. United States: N. p., 1980. Web.
Heckman, R.A. Molten tin reprocessing of spent nuclear fuel elements. [Patent application; continuous process]. United States.
Heckman, R.A. Fri . "Molten tin reprocessing of spent nuclear fuel elements. [Patent application; continuous process]". United States.
@article{osti_6240941,
title = {Molten tin reprocessing of spent nuclear fuel elements. [Patent application; continuous process]},
author = {Heckman, R.A.},
abstractNote = {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 te 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {12}
}