Abstract

At present, nuclear power plant is developing rapidly, and its application has been involved in many aspects including life, military, industry and many other important fields, bringing benefits to people’s life. However, the nuclear power plant has a relatively special structure. Once a safety accident occurs, the consequences will be unimaginable, and the cost of its operation and maintenance will be relatively high. Therefore, how to effectively diagnose the health status of the nuclear power plant is an urgent problem to be solved. On the above-mentioned research background, we need to study nuclear power plant health diagnosis method. Considering the characteristic of the nuclear power plant system and special failure mode, both the safety and economy, a health condition diagnosis method based on analytic hierarchy process and fuzzy comprehensive evaluation method is proposed for the structural characteristics and functional characteristics of nuclear power plants. According to the special failure mode and complex system structure of nuclear power plant, the evaluation index system based on failure mode is constructed by laying the system using the hierarchical analysis method, and the system is scored by fuzzy comprehensive evaluation method. The health status makes a coarse-grained diagnosis and provides a reference for the development of the operation and maintenance strategy.

Highlights

  • Under the current energy structure with fossil fuels as the core, the pollution generated is very serious, and environmental problems are emerging

  • A health situation diagnosis method based on analytic hierarchy process (AHP) and fuzzy comprehensive evaluation method is proposed for the structural characteristics and functional characteristics of nuclear power plants

  • Nuclear power plant is widely used at present, among which the most commonly used is the nuclear power plant of pressurized water reactor (PWR)

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Summary

Introduction

Under the current energy structure with fossil fuels as the core, the pollution generated is very serious, and environmental problems are emerging. The actual reliability of the system in use will be greatly reduced considering the dependence of complex system failures.[10,11] when evaluating nuclear power plants, it is easy to overestimate the fault state of the system and improve the priority in the operation and maintenance strategy. It will cause waste of operation and maintenance costs. The health status makes a coarse-grained diagnosis and provides a reference for the development of the operation and maintenance strategy

Research framework of nuclear power plant diagnostic technology
Introduction of nuclear power plant structure
Other safety auxiliary systems
Analytic hierarchy process
Fuzzy comprehensive evaluation method
The third layer
Construction of index system
Coolant temperature
Full Text
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