Comment on “A time-dependent methodology for fault tree evaluation”: by W.E. Vesely Nuclear Engineering and Design 13 No. 2 (1970) p. 337–360
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Abstract A previous article by W.E. Vesely shows how to calculate, as functions of time, the unavailability and expected number of failures of a system with repairable components. This letter argues that its further claim to calculate the probability of at least one failure is mistaken.
[1] Burt H. Liebowitz. Reliability Considerations for a Two Element Redundant System with Generalized Repair Times , 1966, Oper. Res..
[2] W. E. Vesely,et al. A time-dependent methodology for fault tree evaluation , 1970 .