A preventive maintenance policy based on dependent two-stage deterioration and external shocks

Li Yang, Xiaobing Ma, Rui Peng, Qingqing Zhai and Yu Zhao

Reliability Engineering and System Safety, 2017, vol. 160, issue C, 201-211

Abstract: This paper proposes a preventive maintenance policy for a single-unit system whose failure has two competing and dependent causes, i.e., internal deterioration and sudden shocks. The internal failure process is divided into two stages, i.e. normal and defective. Shocks arrive according to a non-homogeneous Poisson process (NHPP), leading to the failure of the system immediately. The occurrence rate of a shock is affected by the state of the system. Both an age-based replacement and finite number of periodic inspections are schemed simultaneously to deal with the competing failures. The objective of this study is to determine the optimal preventive replacement interval, inspection interval and number of inspections such that the expected cost per unit time is minimized. A case study on oil pipeline maintenance is presented to illustrate the maintenance policy.

Keywords: Preventive maintenance; Delay time; External shock; Competing failures; Expected cost per unit time (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (25)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:160:y:2017:i:c:p:201-211

DOI: 10.1016/j.ress.2016.12.008

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