Nuclear power plant advanced operation limiting condition design method

Abstract

The invention relates to a method for designing advanced operation limiting conditions of a nuclear power plant, and the method comprises the steps: designing the attribute types of all operation limiting values and conditions of structures, systems and parts of a target nuclear power plant through primary evaluation and secondary evaluation based on the operation limiting values and conditions ofall structures, systems and parts of the target nuclear power plant; and designing the content of the operation limiting conditions of the nuclear power plant through assignment and configuration. According to the method, the problems that the availability requirements of structures, systems and parts are poorer in matching with supervision requirements and the availability requirements are poorer in matching with processing measures can be well solved, and the availability requirements corresponding to the operation limiting conditions can be effectively identified by checking the supervision requirements of the structures, the systems and the parts; and meanwhile, the executability and the operability of the operation limiting condition are improved. The coping capacity of the nuclear power plant deviating from normal operation can be continuously improved, and the reliability and economy of the nuclear power plant are continuously improved while safe operation of the nuclear powerplant is ensured.

Description

technical field [0001] The invention belongs to the design technology of nuclear power plants, and in particular relates to a design method for advanced operation restriction conditions of nuclear power plants. Background technique [0002] The operating restrictions of nuclear power plants concentrate all the technical requirements that should be observed during the normal operation of the unit, including safety limits, safety system setting values, normal operating limits and conditions, supervision requirements, and measures taken when deviations from normal operating limits and conditions . Strict compliance with the availability requirements of nuclear power plant structures, systems and components stipulated by the operating constraints can ensure the safe operation of the unit throughout its lifetime. [0003] However, the traditional operational limitations are different in terms of the scope of application of normal operating limits and conditions, the compatibilit...

AI Technical Summary

Problems solved by technology

Most of these exceeded normal operating limits and conditions are non-safety-related and belong to the operation level of nuclear power plants. However, they are managed as technical requirements of operating restrictions, which makes the supervision of important safety-related items of nuclear power plants restricted. Interference, which in turn has a certain impact on the safety, economy, and flexibility of nuclear power plant operation

[0005] Poor match between usability requirements and monitoring requirements

In particular, the availability of some safety-related structures, systems and components is stipulated in the operating restrictions, but there are no provisions and requirements for them in the corresponding periodical test supervision requirements, resulting in the lack of security for structures, systems and components Perform necessary periodic surveillance tests, thereby failing to ensure that its availability meets the availability requirements in the operating constraints

[0006] Some availability requirements are poorly matched with corresponding handling measures in terms of the requirements for actions to be taken when the OLCs are deviated from

For the handling of some incidents, the operating constraints lack clear requirements for enveloping measures, and there is no window for handling incidents

[0007] For the relevant measures that partially violate the safety limits, there are no specific operational regulations for the operating restrictions, and there is a lack of clear guiding operational requirements, resulting in the content of the technical requirements of the operating restrictions not being enforceable.

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