Modeling demand rate and imperfect proof-test and analysis of their effect on system safety

Manoj Kumar, A.K. Verma and A. Srividya

Reliability Engineering and System Safety, 2008, vol. 93, issue 11, 1720-1729

Abstract: Quantitative safety assessment of a safety system plays an important role in comparing design alternatives at design stage and deciding appropriate design options to apply for safety systems. There are a number of such indices given in the literature. Most of the safety indices consider only system parameters (hazard rate, repair rate, diagnosis, coverage, etc.) along with proof-tests (or inspection). This paper extends the underlying model to incorporate demand rate and imperfect proof-tests. It also introduces a new safety index, average probability of failure on actual demand (PFaD), and an availability index, manifested availability (mAv).

Keywords: Probability of failure on demand; Fail dangerous; Fail safe; Markov model; Markov regenerative process; Continuous-time Markov chain; Proof-test; Availability (search for similar items in EconPapers)
Date: 2008
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:93:y:2008:i:11:p:1720-1729

DOI: 10.1016/j.ress.2007.12.001

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