4.6 Article

Post-warranty maintenance strategy selection using shape packages process

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ELSEVIER
DOI: 10.1016/j.ijpe.2022.108702

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Post -warranty; Maintenance strategy; Analytical hierarchy process; Case study

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This paper aims to assist asset owners in selecting the equipment maintenance package at the warranty termination time by proposing the shape package process (SPP), which facilitates the choice between multiple packages based on cost and risk considerations. The main novelty lies in introducing two new parameters, the risk reduction factor (RRF) and the value-added indicator (VAI), to compare maintenance packages. Additionally, the suggested process maps the risk profile associated with each package, enabling a cost-cutting process by identifying and eliminating tasks with less value and risk mitigation.
It is fair to assume that selection of a post-warranty maintenance strategy is one of the main challenges the capital-good owners face; however, there is relatively little research done in this area. This paper aims to assist asset owners in selecting the equipment maintenance package at the warranty termination time; it proposes the shape package process (SPP), which represents a comprehensive process that facilitates the choice between multiple packages, considering the cost and risk associated with each package.The main novelty of this paper is introducing two new parameters to compare maintenance packages: the risk reduction factor (RRF) to assess the maintenance task effectiveness in reducing non-financial risk and the value-added indicator (VAI) to evaluate the task efficiency in reducing the financial risk. Additionally, the suggested process includes mapping the risk profile associated with each package, enabling a cost-cutting process where the tasks with less value and risk mitigation can be easily identified and eliminated.A case study then demonstrates the process flexibility in comparing different maintenance packages using the analytical hierarchy process (AHP); while presenting RRF and VAI at the task and package levels when imple-mented in a cooling water system to select the post-warranty maintenance package from an asset owner's perspective.

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