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 ›› 2013, Vol. 24 ›› Issue (4): 040601 doi: 10.13538/j.1001-8042/nst.2013.04.013

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Study on the long-term passive cooling extension of AP1000 reactor

YE Cheng1,2,*  ZHENG Mingguang2  WANG Yong2,3  QIU Zhongming1,2   

  1. 1School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2Shanghai Nuclear Engineering Research and Design Institute, Shanghai200233, China
    3Zhejiang University, Hangzhou 310058, China
  • Received:2013-01-30
  • Contact: YE Cheng
YE Cheng, ZHENG Mingguang, WANG Yong, QIU Zhongming. Study on the long-term passive cooling extension of AP1000 reactor.Nuclear Science and Techniques, 2013, 24(4): 040601     doi: 10.13538/j.1001-8042/nst.2013.04.013


The AP1000 with high safety is a generation III pressurized water reactor (PWR), its significant feature is passive safety system. However, its passive cooling can only maintain for 72 h and requires additional support from inside or outside the plant. To solve this problem, this study utilized the WGOTHIC software to calculate and analyze the water inventory in the passive containment cooling water tank under different conditions. The results show that when the cooling water inventory is 6553.78 m3, the AP1000 nuclear power plants can achieve long-term, completely passive cooling without any inside or outside the plant. The same outcomes occur when 65-mm-thick containment wall increases the design pressure rating to 0.6 MPa at the cooling water inventory of 5673 m3. Also, the AP1000 shield building was accordingly improved. An ANSYS analysis of the structural stability of the shield building with a 6000 m3 cooling water inventory confirmed that the new design can meet the requirements of the seismic design and the safe residual heat removal requirements of a large-scale PWR.

Key words: Passive cooling, Passive containment cooling system, WGOTHIC