Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (5): 78 doi: 10.1007/s41365-019-0605-3

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Radiological environmental impact analysis of a 2-MW thorium molten salt reactor during an accident

Chang-Qi Chen1,2 • Xiao-Bin Xia1 • Zhi-Hong Zhang1 • Jun Cai1 • Chang-Yuan Li1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-07-09 Revised:2018-10-29 Accepted:2018-11-19
  • Contact: Xiao-Bin Xia E-mail:xiaxiaobin@sinap.ac.cn
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Chang-Qi Chen, Xiao-Bin Xia, Zhi-Hong Zhang, Jun Cai, Chang-Yuan Li. Radiological environmental impact analysis of a 2-MW thorium molten salt reactor during an accident.Nuclear Science and Techniques, 2019, 30(5): 78     doi: 10.1007/s41365-019-0605-3

Abstract: The thorium molten salt reactor–liquid fuel (TMSR-LF1) has inherent safety features. The accident occurrence possibility and their consequences are much lower for the TMSR-LF1 than that of traditional reactors. Based on accident analysis, the maximum credible accident and the radioactive source terms of the TMSR-LF1 were first estimated. Then, the total effective dose of the maximum credible accident was calculated. Based on calculations, the cover gas flow rate can significantly affect the radiation consequences of the maximum credible accident when it changes from 0 to 10 L/min. If no cover gas is flowing, a site-area emergency would be required within the range of 50–73 m from the reactor. In the case of cover gas flow, only an abnormal notification and an alert two emergency class would be required within the range of 50 m.

Key words: TMSR-LF1, Accident classification and description, Maximum credible accident, Emergency class