A Method of Selecting Nuclear Power Plant Valves by Maintainability Evaluation

Abstract

The invention provides a method for selecting a nuclear power plant valve through maintainability evaluation. The method includes the steps that functions executed in a nuclear power plant, a fault mode and a fault result of the valve are obtained; according to the fault mode and the fault result, a maintenance policy detailed list is determined through an RCM decision logic method; according to the maintenance policy detailed list, maintenance windows of the valve are obtained; according to the maintenance policy detailed list, exit windows of the valve are obtained; the intersection of all the maintenance windows and all the exit windows under the operation mode of all units is obtained, if the intersection is a nonempty set, a three-dimensional model of the valve applied to the nuclear power plant is set up, and a virtual human is added into the three-dimensional model; whether the virtual human can complete all maintenance actions in the three-dimensional model or not is judged, if yes, the maintainability of the valve can be achieved, and the valve is selected and used for the nuclear power plant. The method is simple and clear and has pre-judging performance for valve selection.

Description

technical field [0001] The invention relates to the field of nuclear power plant design, in particular to a method for selecting nuclear power plant valves through maintainability evaluation. Background technique [0002] Maintainability refers to the characteristics of products that are easy to maintain. Maintainability analysis and evaluation is a very important content in the maintenance program. It is used to analyze and evaluate maintenance-related items and evaluate the degree to which various related factors meet user requirements during the maintenance process. [0003] At present, there are many studies on the maintainability evaluation methods of aerospace and military equipment, and a large number of evaluation models based on equipment maintainability have been proposed, and the influence of equipment structure design factors, support factors, and human factors on product maintainability has been comprehensively analyzed. , and the correctness and practicability ...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the selection of the valve in the nuclear power plant is not determined by the maintainability evaluation, and at the same time, when the valve is selected, the influence of the failure of the valve on other systems and equipment and the functions to be performed by the valve is not considered, and provides a Method of selecting nuclear power plant valves through maintainability evaluation

Images