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A cost-informed component maintenance index and its applications

Dui, Hongyan, Tian, Tianzi, Wu, Shaomin, Xie, Min (2023) A cost-informed component maintenance index and its applications. Reliability Engineering and System Safety, 230 . Article Number 108904. ISSN 0951-8320. (doi:10.1016/j.ress.2022.108904) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:97537)

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All systems and components are unreliable in the sense that they will fail. While a failed component in a system is being repaired (i.e., corrective maintenance), preventive maintenance (PM) may be conducted on the other components to improve the reliability of the system. The selection of different components for PM may result in a variety of maintenance policies with different cost implications. It is therefore necessary to develop appropriate tools such as importance measures to guide engineers in selecting components for PM in order to minimise relevant costs. There is little research, nevertheless, that jointly minimises the total expected cost of maintenance and maximises the number of components for PM. To fill in this gap, this paper proposes an importance index, Cost-Informed Component Maintenance Index (CICMI). It then derives some propositions of the proposed index and different maintenance policies, respectively. A method to optimise the number of components for PM subject to cost constraints is then proposed. A case study on a reactor coolant system is performed to illustrate the applicability of the proposed methods.

Item Type: Article
DOI/Identification number: 10.1016/j.ress.2022.108904
Uncontrolled keywords: Maintenance; Cost; Reliability; Opportunistic maintenance; Importance measure
Subjects: H Social Sciences > HA Statistics > HA33 Management Science
Divisions: Divisions > Kent Business School - Division > Department of Analytics, Operations and Systems
Funders: University of Kent (
Depositing User: Shaomin Wu
Date Deposited: 21 Oct 2022 16:54 UTC
Last Modified: 16 Feb 2023 15:11 UTC
Resource URI: (The current URI for this page, for reference purposes)

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