Life-Span Estimation Analysis Based on Failure Mechanisms (LEAF)
It is essential for safety management of equipment in process industry to prevent equipment failures which may cause hazardous situations. LEAF (Life-Span Estimation Analysis based on Failure Mechanisms) is a proposeal of a methodology of equipment management or maintenance based on evaluation of the residual life span of each component of the Plant. RCM (Reliability Centered Maintenance) which was developed by the joint research project comprising of Boeing, American Airlines and Federal Aviation Administration, is a logical method of identifying the items to be subjected to maintenance, where the reliability is defined in terms of probability of occurrence based on the record of past failures. American Petroleum Institute proposes RBI (Risk-based Inspection) for the purpose of determining the priority of inspection points in accordance with the degree of risk, where the risk is defined as the product of the probability of failure and the severity of consequence. In contrast with the conventional probabilistic approaches, LEAF is a strategy of maintenance based on finding the shortest residual life span of the critical component, for which the priority of carrying out maintenance is to be given. In the present paper, it is attempted to give a review on the methodology of LEAF and examples of life span estimation in relevance to LEAF.
equipment failure reliability risk based residual life span failure mechanism
Eiji OSHIMA
Professor Emeritus, Tokyo Institute of Technology,Counselor, High Pressure Gas Safety Institute of Japan
国际会议
The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)
杭州
英文
1793-1800
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）