Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Performance evaluation of Accident Tolerant Fuel under station blackout accident in PWR nuclear power plant by improved ISAA code

  • Zhang, Bin (School of Nuclear Science and Technology, Xi'an Jiaotong University) ;
  • Gao, Pengcheng (School of Nuclear Science and Technology, Xi'an Jiaotong University) ;
  • Xu, Tao (Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China) ;
  • Gui, Miao (School of Nuclear Science and Technology, Xi'an Jiaotong University) ;
  • Shan, Jianqiang (School of Nuclear Science and Technology, Xi'an Jiaotong University)
  • Received : 2021.01.30
  • Accepted : 2022.01.22
  • Published : 2022.07.25
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Abstract

The Accident Tolerant Fuel (ATF) is a new concept of fuel, which can not only withstand the consequences of the accident for a longer time, but also maintain or improve the performance under operating conditions. ISAA is a self-developed severe accident analysis code, which uses modular structures to simulate the development processes of severe accidents in nuclear plants. The basic version of ISAA is developed based on UO2-Zr fuel. To study the potential safety gain of ATF cladding, an improved version of ISAA, referred to as ISAA-ATF, is introduced to analyze the station blackout accident of PWR using ATF cladding. The results show that ATF cladding enable the core to maintain a longer time compared to zirconium alloy cladding, thereby enhancing the accident mitigation capability. Meanwhile, the generation of hydrogen is significantly reduced and delayed, which proves that ATF can improve the safety characteristics of the nuclear reactor.

Keywords

Acknowledgement

This study is financially supported by the National Key Research and Development Program of China (No. 2019YFE0191600).

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