Performance Analysis of Passive Residual Heat Removal System under Blackout Accident of Chinese Integral Advanced Reactor

The residual heat removal system of Chinese Integral Advanced Reactor （CIP） designed by Nuclear Power Institute of China is of passive. In this paper, RELAP5/MOD is used to analyze and compute the core nuclear power, core average temperature, pressures of first and second loop and the PRHR power variation with time, and verifies the accident mitigation capability of the PRHR. The analysis results show that PRHR of CIP can successfully build the natural circulation and remove the core residual heat after the blackout accident.