T/CECPA 001-2020 Risk management technical requirements for nuclear power plant configuration

Scope

Scope: This standard specifies the technical requirements for implementing configuration risk management in nuclear power plants, including methods, implementation processes, risk thresholds, and the development and application of tools. This standard is primarily applicable to pressurized water reactor nuclear power plants, and other types of nuclear power plants may refer to it for implementation. Main technical content: To ensure the operational safety of nuclear power plants and prevent or mitigate the consequences of accidents that may endanger safety, nuclear power plants have set up a large number of safety systems to limit the consequences of accidents within acceptable ranges. To ensure the availability of safety systems, nuclear power plant operators have prepared technical specifications to manage the configuration of nuclear power plants (i.e., the state of various safety systems, equipment, and their necessary support systems in nuclear power plants). Technical specifications typically provide restrictions such as allowable maintenance time for specific systems or equipment, but they cannot effectively manage multiple system or equipment failures, thereby controlling the potential increase in nuclear power plant risks caused by multiple system or equipment failures. Although some technical specifications make provisions for multiple system or equipment failures, this approach to risk control is not entirely reasonable due to the complexity and diversity of nuclear power plant configuration combinations. International practice shows that an effective method of controlling multiple equipment failures is configuration risk management. Configuration risk management is typically carried out using risk monitoring tools. To make the results of risk assessment easy to understand and to clearly define acceptable and unacceptable risk levels, while establishing a configuration risk management process, it is also necessary to establish a set of risk thresholds an

Development Information

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