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Joint maintenance-inventory optimisation of parallel production systems

Zahedi-Hosseini, F; Scarf, PA; Syntetos, A

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PA Scarf

A Syntetos


We model a joint inspection and spare parts inventory policy for maintaining machines in a parallel system, where simultaneous downtime seriously impacts upon production performance and has a significant financial consequence. This dependency between system components means that analysis of realistic maintenance models is intractable. Therefore we use simulation and a numerical optimisation tool to study the cost-optimality of several policies. Inspection maintenance is modelled using the delay-time concept. Critical spare parts replenishment is considered using several variants of a periodic review policy. In particular, our results indicate that the cost-optimal policy is characterised by equal frequencies of inspection and replenishment, and delivery of spare parts that coincides with maintenance intervention. In general, our model provides a framework for studying the interaction of spare parts ordering with maintenance scheduling. The sensitivity analysis that we present offers insights for the effective management of such parallel systems, not only in a paper-making plant, which motivates our modelling development, but also in other manufacturing contexts.


Zahedi-Hosseini, F., Scarf, P., & Syntetos, A. (2018). Joint maintenance-inventory optimisation of parallel production systems. Journal of Manufacturing Systems, 48(Part A), 73-86.

Journal Article Type Article
Acceptance Date Jun 11, 2018
Online Publication Date Jul 4, 2018
Publication Date Jul 4, 2018
Deposit Date Jun 14, 2018
Publicly Available Date Jul 4, 2019
Journal Journal of Manufacturing Systems
Print ISSN 0278-6125
Publisher Elsevier
Volume 48
Issue Part A
Pages 73-86
Publisher URL
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