 A stochastic alternating renewal process model for unavailability analysis of standby safety equipmentJ.A.M. van der Weide and Mahesh D. Pandey Reliability Engineering and System Safety, 2015, vol. 139, issue C, 97-104 Abstract: The paper presents a stochastic approach to analyze instantaneous unavailability of standby safety equipment caused by latent failures. The problem of unavailability analysis is formulated as a stochastic alternating renewal process without any restrictions on the form of the probability distribution assigned to time to failure and repair duration. An integral equation for point unavailability is derived and numerically solved for a given maintenance policy. The paper also incorporates an age-based preventive maintenance policy with random repair time. In case of aging equipment, the asymptotic limit or average unavailability should be used with a caution, because it cannot model an increasing trend in unavailability as a result of increasing hazard rate (i.e. aging) of the time to failure distribution. Keywords: Stochastic process; Alternating renewal process; Unavailability; Inspection; Failure rate; Age-based replacement; Safety systems; Nuclear plants (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:139:y:2015:i:c:p:97-104 DOI: 10.1016/j.ress.2015.03.005 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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