Interfaces between Emergency State Classification and Operating Procedures in Nuclear Power Plants

In order to establish connections between emergency state classification and operating procedures in nuclear power plants, the important information indicating and reflecting safety of plant in operating procedures and beneficial to emergency state classification, such as degradation of state functions in state oriented emergency operating procedures, are screened out from different kind of operating procedures, then, based on these information, initial conditions of each identification category of emergency action levels are discussed and interfaces are set in operating procedures accordingly. Thanks to the established substantial connections between emergency state classification and operating procedures, emergency state classification is expected to be extensively integrated into computerized operating procedures, automatic determination of emergency action levels is prospective, which will relieve the burden of operators and emergency team under accident conditions.