Institutional Repository of Chinese Academy of Sciences, Institute of Nuclear Energy Safety Technology, Hefei, Anhui 230031, China
Research on the application of burnable poison ZrB2 and Gd2O3 in a small modular lead-based thermal reactor | |
Sun, Yanting1,2; Yang, Qi1; Gao, Jun1; Liu, Chao1; Jin, Ming1 | |
2019-02-01 | |
发表期刊 | ANNALS OF NUCLEAR ENERGY |
ISSN | 0306-4549 |
摘要 | A lead-based reactor with thermal or epithermal spectra is considered to be a good choice for small modular reactors design. Beside the safe and better thermal property of lead coolant it also takes the advantage of the smaller critical mass characteristics of thermal reactor. However, it needs to control the substantial amounts of excess reactivity at the beginning of core life which is essential to get a long life cycle. Therefore, choosing the appropriate burnable poison material and optimizing its arrangement is a big concern during the design of a small modular lead-based thermal reactor. In this article, the analysis on use of burnable poison in a small modular lead-based thermal reactor has been carried out to achieve effective control of reactivity. The burnup characteristics of burnable poison ZrB2 and Gd2O3 were investigated and compared. The results show that ZrB2 is better than Gd2O3 for flatting the keff curve, while the depletion rate of Gd2O3 is much faster than ZrB2. Reducing the poison content in poison rods and increasing the number of poison assemblies can speed up the poison depletion. Based on the results, an optimized core (with the use of burnable poison) which can give a more flat k(eff) curve with the burnup reactivity swing less than 3303 pcm was given. And the influences of the burnable poison on the main parameters of the optimized core scheme such as power distribution and reactivity coefficient were analyzed. The results show that with the use of burnable poison, the radial power distribution becomes more flat and the coolant void effect and fuel temperature reactivity become more negative. (C) 2018 Elsevier Ltd. All rights reserved. |
关键词 | Burnable poison Reactivity Burnup ZrB2 Gd2O3 |
DOI | 10.1016/j.anucene.2018.09.012 |
关键词[WOS] | CONCEPTUAL DESIGN ; DEVELOPMENT STRATEGY ; PROGRESS |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Nuclear Science & Technology |
WOS类目 | Nuclear Science & Technology |
WOS记录号 | WOS:000451498100003 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/40497 |
专题 | 中国科学院核能安全技术研究所 |
通讯作者 | Gao, Jun |
作者单位 | 1.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Key Lab Neutron & Radiat Safety, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230027, Anhui, Peoples R China |
第一作者单位 | 中国科学院核能安全技术研究所 |
通讯作者单位 | 中国科学院核能安全技术研究所 |
推荐引用方式 GB/T 7714 | Sun, Yanting,Yang, Qi,Gao, Jun,et al. Research on the application of burnable poison ZrB2 and Gd2O3 in a small modular lead-based thermal reactor[J]. ANNALS OF NUCLEAR ENERGY,2019,124(无):21-27. |
APA | Sun, Yanting,Yang, Qi,Gao, Jun,Liu, Chao,&Jin, Ming.(2019).Research on the application of burnable poison ZrB2 and Gd2O3 in a small modular lead-based thermal reactor.ANNALS OF NUCLEAR ENERGY,124(无),21-27. |
MLA | Sun, Yanting,et al."Research on the application of burnable poison ZrB2 and Gd2O3 in a small modular lead-based thermal reactor".ANNALS OF NUCLEAR ENERGY 124.无(2019):21-27. |
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