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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.12
- 수록면
- 2,867 - 2,873 (7page)
- DOI
- https://doi.org/10.1016/j.net.2020.05.020
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초록· 키워드
오류제보하기
In reprocessed uranium, derived from an impoverished fuel of light-water moderated reactors, there areisotopes of 232, 234, 236U, which make its recycling remarkably difficult. A method of concentration of 235Utarget isotope in cascade's additional product was proposed to recover the isotopic composition ofreprocessed uranium. A general calculation procedure is presented and a parameters' optimization ofmulti-flow cascades with additional products. For the first time a numeric model of a cascade that usesthe cuts of partial flows of stages with relatively high separation factors was applied in this procedure. Anovel computing experiment is carried out on separation of reprocessed uranium hexafluoride withproviding a high concentration of 235U in cascade's additional product with subsequent dilution. Theparameters of cascades' stages are determined so as to allow reducing the 232, 234, 236U isotope content upto the acceptable. It was demonstrated that the dilution of selected products by the natural waste makesit possible to receive a low enriched uranium hexafluoride that meets the ASTM C996-15 specification forcommercial grade
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