Dealing with uncertainty in effect analysis of test strategies on safety instrumented system performance

Rachid Sal (), Rachid Nait-Said and Mouloud Bourareche
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Rachid Sal: University of Batna 2
Rachid Nait-Said: University of Batna 2
Mouloud Bourareche: University of Batna 2

International Journal of System Assurance Engineering and Management, 2017, vol. 8, issue 2, No 108, 1945-1958

Abstract: Abstract In this paper, we have attempted to show the effect of test strategies on the performance of safety instrumented system (SIS) in a fuzzy parameter environment. Two types of test strategies are considered: simultaneous and staggered tests. As a relevant parameters of SIS, common cause failure factor and diagnostic coverage ( $$DC$$ D C ) rate are modeled by triangular fuzzy numbers and are injected into the fuzzy Markov model to calculate the fuzzy PFD of SIS. Sensitivity analysis is carried out to show the effect of fuzzy beta and $$DC$$ D C variation on average fuzzy PFD of the SIS. An application case focused on a high integrity pressure protection system is carried out.

Keywords: Common cause failures; Diagnostic coverage; Uncertainty; Fuzzy Markov chains; Fuzzy PFD; Test strategies (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s13198-017-0636-2

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