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Opportunistic maintenance on the automatic switching mechanism of a two-unit multi-state system

Author

Listed:
  • Vasilis P. Koutras
  • Sonia Malefaki
  • Agapios N. Platis

Abstract

A two-unit multi-state deteriorating system consisting of one operating and one unit in standby mode, under preventive maintenance and imperfect switch is considered. System control is switched to the standby unit upon operating unit failure or maintenance, either automatically, by an automatic switching mechanism (ASM), or manually. To avoid ASM failures, triggering an opportunistic maintenance (OM) on the automatic switching mechanism is proposed upon unit maintenance. The main objective is to evaluate the effect of ASM opportunistic maintenance on system's dependability and performance. The asymptotic availability and the total expected operational cost of the system with and without automatic switching mechanism OM for various unit maintenance policies are compared through a numerical example. The results are encouraging since the proposed model with OM provides higher availability and significantly reduced operational cost regardless the adopted maintenance policy. [Received: 29 January 2020; Accepted: 28 September 2020]

Suggested Citation

  • Vasilis P. Koutras & Sonia Malefaki & Agapios N. Platis, 2021. "Opportunistic maintenance on the automatic switching mechanism of a two-unit multi-state system," European Journal of Industrial Engineering, Inderscience Enterprises Ltd, vol. 15(5), pages 616-642.
    • Handle: RePEc:ids:eujine:v:15:y:2021:i:5:p:616-642
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