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

  • Chang-Qi Chen
  • Xiao-Bin XiaEmail author
  • Zhi-Hong Zhang
  • Jun Cai
  • Chang-Yuan Li


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.


TMSR-LF1 Accident classification and description Maximum credible accident Emergency class 


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Copyright information

© China Science Publishing & Media Ltd. (Science Press), Shanghai Institute of Applied Physics, the Chinese Academy of Sciences, Chinese Nuclear Society and Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Chang-Qi Chen
    • 1
    • 2
  • Xiao-Bin Xia
    • 1
    Email author
  • Zhi-Hong Zhang
    • 1
  • Jun Cai
    • 1
  • Chang-Yuan Li
    • 1
  1. 1.Shanghai Institute of Applied Physics, Chinese Academy of SciencesShanghaiChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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