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 ›› 2016, Vol. 27 ›› Issue (4): 78 doi: 10.1007/s41365-016-0100-z

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Analysis of tritium production in a 2 MW liquid-fueled molten salt experimental reactor and its environmental impact

Xiao-Wen Lyu 1,2, Xiao-Bin Xia 1, Zhi-Hong Zhang 1, Jun Cai 1, Chang-Qi Chen 1,2   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Contact: Xiao-Bin Xia E-mail:xiaxiaobin@sinap.ac.cn
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Xiao-Wen Lyu, Xiao-Bin Xia, Zhi-Hong Zhang, Jun Cai, Chang-Qi Chen. Analysis of tritium production in a 2 MW liquid-fueled molten salt experimental reactor and its environmental impact.Nuclear Science and Techniques, 2016, 27(4): 78     doi: 10.1007/s41365-016-0100-z
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Abstract:

Tritium release is one of the most concerning topics in nuclear power plants. Here, the tritium production in a 2 MW liquid-fueled molten salt experimental reactor (TMSR-LF1) was calculated by ORIGEN-S with an updated cross-section library generated by TRITON in SCALE 6.1.3 code system. The results show that the tritium production rate and normalized tritium production rate of TMSR-LF1 are 8.90 × 1011 Bq/day and 4.45 × 1011 Bq/(MW day), respectively. The environmental impact of tritium was analyzed via PC-CREAM 08 with an assumed 36 % release rate of tritium referring to the molten salt reactor experiment. During normal operations, the maximum tritium concentration is 1.4 Bq/m3 under normal condition, and the corresponding individual dose to the public is about 1 μSv/a; under extreme conditions, the maximum concentration and corresponding individual doses are 11.8 Bq/m3 and 9 μSv/a, respectively. Ingestion is the main exposure pathway and accounts for 62 % of the total dose. Of this, 35 % is from organically bound tritium.

Key words: Tritium production,  TMSR-LF1,  Environmental impact analysis