 Reliability performance of safety instrumented systems: A common approach for both low- and high-demand mode of operationHui Jin, Mary Ann Lundteigen and Marvin Rausand Reliability Engineering and System Safety, 2011, vol. 96, issue 3, 365-373 Abstract: Safety instrumented systems (SISs) are usually divided into two modes of operation, low-demand and high-demand. Unfortunately, this classification is not easy to justify and the available formulas that are used to quantify the reliability performance in these two modes of operation are unable to capture combined effects of functional testing, spurious activations, and successful responses to demands. This article discusses some important modeling issues for SIS reliability performance quantification, and demonstrates their implementation in a Markov model. The accuracy of the Markov model for a simple case study of a pressure transmitter is verified through comparison with a scenario-based formula, and it is shown that the Markov approach gives a sufficiently accurate result for all demand rates, covering both low- and high-demand modes of operation. Keywords: Markov model; Safety instrumented systems; High-demand; Hazardous event frequency; Demand rate (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:96:y:2011:i:3:p:365-373 DOI: 10.1016/j.ress.2010.11.007 Access Statistics for this article Reliability Engineering and System Safety is currently edited by Carlos Guedes Soares More articles in Reliability Engineering and System Safety from Elsevier |
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