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

• 作 者: Xiao-Wen Lyu Xiao-Bin Xia Zhi-Hong Zhang Jun Cai Chang-Qi Chen
• 机 构: Shanghai Institute of Applied Physics, Chinese Academy of Sciences,University of Chinese Academy of
• 出 处: Nuclear Science and Techniques
• 发表日期: 2016年04期
• 关键词: molten normalized extreme library assumed exposure concerning operations updated

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 8.90x10~(11)Bq/day and4.45x10~(11)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/m~3 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/m~3 and 9 μSv/a, respectively.Ingestion is the main exposure pathway and accounts for62 % of the total dose. Of this, 35 % is from organically bound tritium.

Tritium release is one of the most pertinent 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 rate of production of tritium and normalized tritium production rate of TMSR-LF1 are 8.90 × 10 ~ (11) Bq / day and 4.45 × 10 ~ (11) 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 was 1.4 Bq / m ~ 3 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 / m ~ 3 and 9 μSv / a, respectively. Changes is the main exposure pathway and accounts for62 % of the total dose. Of this, 3 5% is from organically bound tritium.