RADIATION PROTECTION BULLETIN ›› 2023, Vol. 43 ›› Issue (3-4): 42-50.

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Investigation of a Source Term Abnormal Event in a Nuclear Power Plant

Li Jianlong, Jiang Weiwei, Li Yanpeng, Long Lin, Guo Fei, Chen Ziliang   

  1. Suzhou Institude of Thermal Engineering, Shenzhen, Guangdong 518120
  • Received:2023-06-12 Online:2023-08-20 Published:2023-10-24

Abstract: The radiation level of a reactor unit of a domestic power plant during overhaul is high. The cumulative collective dose during overhaul is also high. When descending to the hot stop platform the radiation index of the RCP system is very high. mainly for radionuclide Co-60. The overall radiation index after oxidation and purification is relatively high. Compared with the other three reactor units, the overall radiation level of the reactor unit under overhaul is at the highest level. This paper mainly introduces the causes for the high radiation source of the reactor unit and the investigation process.

Key words: PWR, 18 months refueling, Source term, Radiation

CLC Number: 

  • TL75