Method for executing safety-related system and equipment periodic test supervision requirements of nuclear power plant

Abstract

The invention relates to a method for executing safety-related system and equipment periodic test supervision requirements of a nuclear power plant. The method comprises the steps of: dividing the acceptance criterion of each supervision requirement into two types: an availability criterion and a normal operation criterion according to whether the availability requirement is affected or not when the acceptance criterion of supervision requirements is not met; when a periodic test is executed and the availability criterion is not met, executing corresponding measures of operation limit values and conditions; and when the normal operation criterion is not met, performing self-control in the nuclear power plant, taking necessary maintenance measures without the need of executing measures of operation limit values and conditions. The method for classifying the acceptance criterion of the supervision requirements provided by the invention is simple, highly-efficient and convenient to use, avoids the situation that different nuclear power plants execute different periodic test strategies inconsistently, is convenient for nuclear safety supervision and power plants to use, and also avoidsthe operation limitation of a nuclear power unit due to the fact that equipment is improperly judged to be unavailable and enter LCO.

Description

technical field [0001] The invention belongs to the nuclear power plant design technology, and in particular relates to a nuclear power plant safety-related system and a method for implementing periodic test supervision requirements of equipment. Background technique [0002] The operating technical specifications of nuclear power plants stipulate the operating limits and conditions (LCO) that the power plant must meet as required by my country's nuclear safety regulations (HAD103 / 01), including safety limits, setting values ​​of protection thresholds, and normal operating limits and conditions. and the actions to be taken when the availability requirements contained in the LCO above are not met. Strictly abiding by the technical criteria stipulated in the operating technical specification (TS for short) is the minimum technical rule to ensure the safety of the power plant throughout its lifetime. In order to supervise the above usability requirements, the supervision items,...

AI Technical Summary

Problems solved by technology

In the actual implementation process, due to the lack of clear guidelines, the implementation strategies of different nuclear power plants are quite different; when a certain test does not meet the acceptance criteria of supervision requirements, some nuclear power Relevant system and equipment periodic test supervision requirements are considered not to meet the operating limits and conditions, and corresponding measures are implemented; some nuclear power plants first judge whether the operating limits and conditions are not met based on experience, and then determine whether to implement corresponding measures; this gives The implementation of technical specifications brings uncertainty and is not conducive to nuclear safety supervision

[0007] At present, domestic patent applications related to supervision requirements include "Methods for Hierarchical Management of Supervision Requirements for Periodic Tests of Nuclear Power Plants" (Application Publication No. "CN 105702307 A"). , and there are too many considerations, such as the need to consider the corresponding safety function of the device and the classification of the safety function, the consequences of the unavailability of the device, the need to classify the device according to the safety function, and the need to query upstream documents such as safety analysis reports, safety guidelines, regular Instructions for completeness of tests and guidelines for periodical tests, etc., are also compared with the classification results of reference power plants

In addition, the relevant technical proposals simply classify non-safety functions as B-level, but some nuclear power plant operating technical specifications include availability requirements for non-safety functions, and this part of the content is not properly classified

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