Study on Emergency State Classification of Nuclear Power Plant Based on Cold Source State

Serious accidents in nuclear power plants will lead to unacceptable release of radioactive materials to the surrounding environment. At present, according to the monitoring and analysis of unit status, environmental characteristics and accident process, nuclear power plants determine emergency status classification, respond to emergency status by classification, reduce accident impact and ensure personnel safety. Cold source events have caused frequent shutdown of nuclear power plant units, which has been widely concerned. It is necessary to study emergency state classification based on cold source state. This paper provides an emergency state classification method based on cold source state, which can accurately judge the degradation degree of cold source state, and automatically classify emergency state according to the degradation degree of cold source state, thus effectively avoiding the judgment mistakes of emergency personnel under the degradation condition of cold source state.