Potential fault analysis method based on PFMEA and HRA methods

Abstract

The invention provides a potential fault analysis method based on PFMEA and HRA methods. The potential fault analysis method comprises the following five steps: 1, task analysis; 2, abnormal mode and abnormal reason analysis; 3, quantification of the occurrence probability of the abnormal function mode; and 4, risk priority number calculation and potential fault identification. Through the steps, the problems of man-machine separation and difficulty in quantification of the potential fault probability in the PFMEA method are solved, the man-machine loop coupling effect and the human error correlation are considered by combining the CREAM and THERP methods in the HRA, and quantification of the human error probability and the potential fault occurrence probability is realized.

Description

technical field [0001] The present invention provides a potential failure analysis method based on PFMEA and HRA methods, that is, a potential failure analysis method considering the man-machine loop coupling characteristics and human error correlation, which is based on Process Failure Mode and Effects Analysis (Process Failure Mode and Effects Analysis) , PFMEA) technology, combined with the Human Reliability Analysis (HRA) method, realizes the identification and quantification of potential faults of the man-machine system, which belongs to the reliability analysis of man-machine systems in the cross-technical field of reliability engineering and human factors engineering method, focusing on solving the "man-machine separation" and difficult-to-quantify problems existing in traditional latent fault analysis methods. Background technique [0002] With the rapid improvement of the level of science and technology, the performance and complexity of man-machine systems are cons...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the "man-machine separation" and difficult-to-quantify problems existing in traditional potential fault analysis methods, the present invention provides a potential fault analysis method based on PFMEA and HRA methods, which analyzes the occurrence of human errors under the coupling of human-machine loops based on the CREAM method Mechanism, based on the THERP method to analyze the correlation of human error in the task process, correct the probability of human error, comprehensively consider the probability of equipment failure and environmental disturbance, realize the quantification and identification of potential failure probability, and form a human-machine system for systematic investigation in the development stage Technical capabilities for potential failures to support safety design optimization

Images