Analysis for a two-dissimilar-component cold standby repairable system with repair priority

Kit Nam Francis Leung, Yuan Lin Zhang and Kin Keung Lai

Reliability Engineering and System Safety, 2011, vol. 96, issue 11, 1542-1551

Abstract: In this paper, a cold standby repairable system consisting of two dissimilar components and one repairman is studied. Assume that working time distributions and repair time distributions of the two components are both exponential, and Component 1 has repair priority when both components are broken down. After repair, Component 1 follows a geometric process repair while Component 2 obeys a perfect repair. Under these assumptions, using the perfect repair model, the geometric process repair model and the supplementary variable technique, we not only study some important reliability indices, but also consider a replacement policy T, under which the system is replaced when the working age of Component 1 reaches T. Our problem is to determine an optimal policy Tâ Ž such that the long-run average loss per unit time (i.e. average loss rate) of the system is minimized. The explicit expression for the average loss rate of the system is derived, and the corresponding optimal replacement policy Tâ Ž can be found numerically. Finally, a numerical example for replacement policy T is given to illustrate some theoretical results and the model's applicability.

Keywords: Renewal process; Geometric process; Supplementary variable; Priority; Two-dimensional Markov process; Replacement policy (search for similar items in EconPapers)
Date: 2011
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Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:96:y:2011:i:11:p:1542-1551

DOI: 10.1016/j.ress.2011.06.004

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