Risk Analysis on Safety Injection Test of PWR Nuclear Power Plant

During the safety injection（SI） test in the PWR nuclear power plant,full water in pressurizer and high-high level,low-low level in SG may take place.This paper analyzes the risks and response measures in the SI test.Focusing on the full scale problem of pressurizer thermal calibration level gauge in the SI test of nuclear power plant,the test process is analyzed and the problems that should be noted in the SI test are summed up.