An improved FMEA method based on logical structure number

doi:10.16265/j.cnki.issn1003-3033.2021.10.014

Abstract

Abstract: In order to solve problems of subjective error, structure conversion and logic confusion in traditional FMEA, an improved FMEA analysis method based on logical structure number was proposed. Fuzzy sets and AHP were used to reduce subjective errors, generates logical structure numbers through FTA analysis, logical structure numbers was used to realize conversion of failure causes to failure modes, and data was processed through TOPSIS to obtain risk priority number of each failure mode to make FMEA analysis have logical and integral. Method was applied to research of FPSO three-phase separator to verify effectiveness of method. The results show that main failure mode of three-phase separator found by this method is more accurate, more suitable for production practice, and more conducive to operation of engineering personnel.

Key words: logical structure number, improved failure mode and effect analysis (FMEA), analytic hierarchy process (AHP), technique for order preference by similarity to an ideal solution (TOPSIS), floating production storage and offloading(FPSO)three-phase separator

CLC Number:

X928.03

WU Yaonan, LIN Lei, REN Xinwen, WANG Longting, LIU Zhihui, LIU Zengkai. An improved FMEA method based on logical structure number[J]. China Safety Science Journal, 2021, 31(10): 97-104.

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