Product reliability improving method and system based on equipment failure data analysis

Abstract

The invention discloses a product reliability improving method based on equipment failure data analysis. The method comprises the following steps that S1, basic information and fault information of nuclear power equipment are collected; S2, performing fault mode analysis according to the basic information and the fault information, and determining a fault mode of each type of nuclear power equipment and a corresponding failure component; S3, performing equipment reliability calculation and part reliability calculation according to the basic information and the fault information; and S4, carrying out common problem analysis according to a fault mode analysis result and data from an empirical feedback system, and generating a product reliability improvement report. The method is based on actual failure data, can more systematically analyze the problems and the improvement direction of the product, is more accurate compared with an existing mode of improvement based on experience feedback, can serve as a basis for improving the product quality of an equipment manufacturer, and can provide a basis for equipment model selection and power plant cost budget.

Description

technical field [0001] The invention relates to a product reliability improvement method and system based on equipment failure data analysis. Background technique [0002] With the rapid development of nuclear power, the number of units in service / under construction continues to increase. However, in the process of designing and manufacturing nuclear power equipment, manufacturers usually design it according to the requirements of procurement technical specifications, but the procurement technical specifications do not mention the functions of the equipment on the unit, the environment, the impact of failures, and equipment experience feedback , leading to blind spots in the design process, so design / manufacturing flaws are gradually exposed during use. [0003] For equipment failure defects, nuclear power plants are currently resolved through preventive maintenance program management or maintenance after problems are found. However, in actual use, many failures originate ...

AI Technical Summary

Problems solved by technology

However, in the actual use process, many failures originate from unreasonable product structure and equipment, manufacturing quality defects, etc., which cannot be managed through preventive maintenance

However, the failure modes of products from the same manufacturer or the same model are basically the same. Because they are used in different locations in the power plant, the current power plant is basically managed through manual identification or major event experience feedback. There is no systematic analysis method as a guide, so it is impossible to formulate targeted solutions. preventive measures, resulting in high-frequency retransmission of faults

[0004] For manufacturers, because they cannot grasp the problems in the use process of the product, they do not know the direction of product improvement, and thus cannot effectively improve the inherent reliability of the product

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