Method of reprocessing spent nuclear fuel

66 Most part of an amount of uranium contained in the spent nuclear fuel is removed by making fluorine or a fluorochemical act on the spent nuclear fuel to convert the uranium into UF, and the uranium is purified through a simple method of distilling the UFtogether with a absorbent. After removing t...

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Main Authors Fukasawa, Tetsuo, Takahashi, Masanori, Shibata, Youji, Sasahira, Akira, Kamoshida, Mamoru
Format Patent
LanguageEnglish
Published 04.11.2008
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Abstract 66 Most part of an amount of uranium contained in the spent nuclear fuel is removed by making fluorine or a fluorochemical act on the spent nuclear fuel to convert the uranium into UF, and the uranium is purified through a simple method of distilling the UFtogether with a absorbent. After removing the most part of the amount of uranium, the remaining nuclear fuel material is dissolved and then transferred to an extraction process to recover plutonium. By doing so, a small sized dry process can be employed as a uranium purification process. Since the nuclear fuel material is dissolved and extracted after removing most part of an amount of uranium, a volume of processing solution can be reduced and the machine installation scale can be made small. Accordingly, the reprocessing facility can be extremely downsized.
AbstractList 66 Most part of an amount of uranium contained in the spent nuclear fuel is removed by making fluorine or a fluorochemical act on the spent nuclear fuel to convert the uranium into UF, and the uranium is purified through a simple method of distilling the UFtogether with a absorbent. After removing the most part of the amount of uranium, the remaining nuclear fuel material is dissolved and then transferred to an extraction process to recover plutonium. By doing so, a small sized dry process can be employed as a uranium purification process. Since the nuclear fuel material is dissolved and extracted after removing most part of an amount of uranium, a volume of processing solution can be reduced and the machine installation scale can be made small. Accordingly, the reprocessing facility can be extremely downsized.
Author Sasahira, Akira
Takahashi, Masanori
Shibata, Youji
Fukasawa, Tetsuo
Kamoshida, Mamoru
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References "Purification Process studies for the Reprocessing by Fluoride Volatility Method", JAERI-M6592, pp. 1-44, Japan Atomic Energy, Research Institute, 1976, no month.
"Present Status and Problems on Non-Aqueous Reprocessing" by Special Committee on Non-aqueous Reprocessing, Journal of the Atomic Energy Society of Japan, vol. 9, No. 9, pp. 14-19 (1967), no month.
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Cathers et al. (3275422) 19660900
Jonke et al. (3294493) 19661200
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