Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (12): 120603-120603.doi: 10.11889/j.0253-3219.2017.hjs.40.120603

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Analysis of the key factors in passive containment cooling system based on CERT

LEI Lei, JING Jianping, QIAO Xuedong, HU Jian, SHI Xingwei   

  1. Nuclear and Radiation Safety Center, Beijing 100082, China
  • Received:2017-04-19 Revised:2017-06-26 Online:2017-12-10 Published:2017-12-08
  • Supported by:
    Supported by National Science and Technology Major Project (No.2015ZX06002007, No.2013ZX06002001)

Abstract: Background: Passive containment cooling system (PCS) is part of the passive reactor safety design for cooling down the containment in accidents. Purpose: This study aims to analyze the key factors affecting the cooling capacity of PCS based on the containment safety verification via integral test (CERT). Methods: The calculating model of CERT was established using containment safety analysis program. The calculating results and the experiment results were compared to verify the model. The inner containment pressure response of double-ended cold leg guillotine (DECLG) break accident was calculated and the sensitive analysis of some parameters such as the cooling water flow, the outer shell cooling water coverage and the annulus wind speed were performed. Results: The result showed that the calculated pressure and temperature were similar to the experimental test results with a little bit higher than the latter. The maximum pressure of DECLG is 0.266 1 MPa. The inner containment pressure increased significantly when the cooling water flow and the outer shell cooling water coverage decreased. The pressure decreased slightly when the annulus wind speed increased. Conclusion: The calculating model is applicable for CERT calculations, and the results are conservative. Inner containment pressure is sensitive to the cooling water flow and the outer shell cooling water coverage.

Key words: PCS, CERT, Sensitive analysis, Cooling water coverage

CLC Number: 

  • TL364+.3