Condition-based fault tree analysis (CBFTA): A new method for improved fault tree analysis (FTA), reliability and safety calculations

Dan M. Shalev and Joseph Tiran

Reliability Engineering and System Safety, 2007, vol. 92, issue 9, 1231-1241

Abstract: Condition-based maintenance methods have changed systems reliability in general and individual systems in particular. Yet, this change does not affect system reliability analysis. System fault tree analysis (FTA) is performed during the design phase. It uses components failure rates derived from available sources as handbooks, etc. Condition-based fault tree analysis (CBFTA) starts with the known FTA. Condition monitoring (CM) methods applied to systems (e.g. vibration analysis, oil analysis, electric current analysis, bearing CM, electric motor CM, and so forth) are used to determine updated failure rate values of sensitive components. The CBFTA method accepts updated failure rates and applies them to the FTA. The CBFTA recalculates periodically the top event (TE) failure rate (λTE) thus determining the probability of system failure and the probability of successful system operation—i.e. the system's reliability.

Keywords: Fault tree analysis (FTA); Condition monitoring (CM); Failure rate; System reliability; Condition-based fault tree analysis (CBFTA); Risk analysis; Mean time between failures (MTBF); Reliability prediction (search for similar items in EconPapers)
Date: 2007
References: View complete reference list from CitEc
Citations: View citations in EconPapers (15)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:92:y:2007:i:9:p:1231-1241

DOI: 10.1016/j.ress.2006.05.015

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