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FTA (Fault Tree Analysis) and FMEA (Failure Mode and Effects Analysis) are common tools in risk management. FTA is used to identify the possibility of system failure and its root cause, and FMEA is used to evaluate the process or design that may fail and determine its severity and potential impact. From past research and literature, it is found that the FMEA risk index is obtained by multiplying three determinants, severity (S) level * occurrence (O) level * difficulty (D) level, and the various influencing factors may be high or low The risk of the actual system is not significant due to the fact that the flight opportunities are almost the same. This calculation method only has calculation results, and does not evaluate the interaction of various influencing factors on the overall system. This study will assume a similar operating mode background, explain the single limitation of FMEA, and propose and use the combination of FTA and FMEA to improve the accuracy of risk assessment.
In this study, FMEA (Failure Mode and Effects Analysis, FMEA) was first used to assess the main risks through a systematic analysis of the failure degree of potential storage and transportation processes. Then use the FTA fault tree analysis method (Fault Tree Analysis), use the probability combination calculation to infer the risk priority index data generated by using FMEA alone, which is closer to the empirical risk assessment judgment that meets the business needs of the enterprise, and helps the enterprise in limited resources. , can use the priority budget more efficiently to enhance the corporate image and effectively control risks and strengthen competitiveness.
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