Analysis model establishing method and system for tripping and reactor shutdown device

Abstract

The invention relates to an analysis model establishing method and system for a tripping and reactor shutdown device. The method comprises that S0) all device fault models and an associated event listare determined; S1) a top event is defined; S2) an analysis boundary of the system is determined; S3) according to a process chart of the system of the top event, a loop is modularized; S4) an OR gate is connected under the top event, events of different devices in a serial loop serve as input of the OR gate; S5) the analysis depths of different module structures are determined according to the granularity requirement till the column is written to a basic event level, and a fault tree is established; and S6) the established fault tree is analyzed in a simulated way. The double-failure fault tree model of the tripping and reactor shutdown device can be established, the loop is modularized, and the structure is simple and clear; the analysis boundary of the system can be determined effectively in a unit system manner; and further, the real-time state of the device is introduced into the fault tree model, and the real-time risk of a power station can be reflected accurately.

Description

Technical field [0001] The invention relates to the field of nuclear power plants, and in particular to a method and system for establishing an analysis model of equipment jumping and stacking. Background technique [0002] To avoid incidents, it is necessary to know the single cause or even multiple causes of the incident to take targeted preventive measures. In order to improve the availability of nuclear power plants and reduce the occurrence of tripping and stacking incidents, it is not only necessary to grasp the reasons for single failure and stacking, but also the reasons for double failures leading to tripping and stacking according to the requirements of the power plant classification criteria. Make correct and more targeted decisions for production activities such as operation, maintenance, and design improvement. This point has reached a broad consensus in the nuclear power industry. The RCM maintenance theory developed in the 1980s, the AP913 equipment reliability m...

AI Technical Summary

Problems solved by technology

At present, the identification of single-failure tripping and stacking equipment has been basically completed, but the identification of double-failure tripping and stacking reasons has not been systematically carried out, and the FMEA method is suitable for identifying single-failure equipment. Difficulties in identifying SPV equipment

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