Minor actinide incineration and Th-U breeding in a small FLiNaK Molten Salt Fast Reactor
Yu, CG; Li, XX; Cai, XZ; Zou, CY; Ma, YW; Wu, JH; Han, JL; Chen, JE
2017
发表期刊ANNALS OF NUCLEAR ENERGY
ISSN0306-4549
卷号99页码:335-344
文章类型期刊论文
摘要Minor actinide (MA) accumulated in spent fuel is the primary contributor to the long-term radiological hazards of high-level nuclear waste. Due to its outstanding features such as fast neutron spectrum, no fuel assembly fabrication, on-line refueling and reprocessing, Molten Salt Fast Reactor (MSFR) is regarded as one of the candidate reactors for MA incineration. In the present work, we evaluate the MA incineration capability for a 500 MWth FLiNaK MSFR by considering on-line MA feeding into the fuel salt and/or U-233 extraction from the fertile salt, where the initial FLiNaK fuel salt is composed of 70 mol% (LiF4, NaF and KF) and 30 mol% (ThF4, (UF4)-U-233 and MAF(3)). The simulated results show that, during a 50-year operation, the MA incineration efficiency with on-line MA feeding and U-233 extraction scenario is significantly higher compared with the case without either MA feeding or U-233 extraction. Based on the scenario of online MA feeding and U-233 extraction, the initial MA loading is further adjusted to keep a small excess reactivity during the whole operation. And the MA incineration amount, the depletion ratio between MA and total heavy nuclides and the MA incineration efficiency at 50-year operating time are 7301 kg, 77.4% and 33.3 kg/TWh, respectively, with a doubling time of 39-year for U-233 breeding. We also analyze and discuss the evolutions of the fuel temperature feedback coefficient, the effective delayed neutron fraction and the intensity of spontaneous fission neutron during the whole operating time. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Molten Salt Fast Reactor Minor Actinide Incineration Flinak Salt Th-u Breeding
DOI10.1016/j.anucene.2016.09.025
收录类别SCI
语种英语
WOS记录号WOS:000388053100039
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27384
专题中科院上海应用物理研究所2011-2018年
推荐引用方式
GB/T 7714
Yu, CG,Li, XX,Cai, XZ,et al. Minor actinide incineration and Th-U breeding in a small FLiNaK Molten Salt Fast Reactor[J]. ANNALS OF NUCLEAR ENERGY,2017,99:335-344.
APA Yu, CG.,Li, XX.,Cai, XZ.,Zou, CY.,Ma, YW.,...&Chen, JE.(2017).Minor actinide incineration and Th-U breeding in a small FLiNaK Molten Salt Fast Reactor.ANNALS OF NUCLEAR ENERGY,99,335-344.
MLA Yu, CG,et al."Minor actinide incineration and Th-U breeding in a small FLiNaK Molten Salt Fast Reactor".ANNALS OF NUCLEAR ENERGY 99(2017):335-344.
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