EVALUATION OF SOURCE TERMS OF FISSION PRODUCTS IN GASEOUS EFFLUENTS AND RECOMMENDATIONS FOR EFFLUENT MONITORING OF NUCLEAR POWER PLANTS

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  • Zhu Zhaowen
    Nuclear and Radiation Safety Center, MEP
  • Jiang Jing
    Nuclear and Radiation Safety Center, MEP
  • Fang Lan
    Nuclear and Radiation Safety Center, MEP Third Qin-shan Nuclear Power Co., Ltd.
  • Xu Chunyan
    Nuclear and Radiation Safety Center, MEP
  • Liu Xinhua
    Nuclear and Radiation Safety Center, MEP
  • Xie Feng
    Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University
  • Lou Mengqi
    Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University

抄録

The source terms of fission products in the airborne effluents of the CPR1000 and HPR1000 (Hualong One) nuclear power plants (NPPs) in China were estimated for cycles without fuel failure. We used both the operational data for the primary coolants of domestic and foreign NPPs as well as the latest research on reactor source terms for this purpose. The results indicated that the activity concentrations of fission product nuclides in the gaseous effluents were two orders of magnitude lower than the detection limit of laboratory instruments. After comparing the domestic and foreign regulations on gaseous effluent monitoring of NPPs and reviewing the domestic gaseous effluent monitoring practices, recommendations on gaseous effluent monitoring were offered in this paper. This study could provide a technical basis for gaseous effluent management for NPPs and help revise the relevant Chinese regulations and standards in the future.

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