Title: Complementary optimal age maintenance (COAM) policy for repairable systems

Authors: Nse Udoh; Effanga Effanga; Christian Onwukwe

Addresses: Department of Statistics, University of Uyo, Uyo, Akwa Ibom State, Nigeria ' Department of Statistics, University of Calabar, Calabar, Cross River State, Nigeria ' Department of Statistics, University of Calabar, Calabar, Cross River State, Nigeria

Abstract: A Complementary Optimal Age Maintenance (COAM) policy is proposed in this work for repairable systems which require high level of availability and safety standard by exploiting the comparative advantage of minimum expected cost-based optimal age replacement policy and maximum limiting availability-based optimal age replacement policy. The failure distribution, cost of preventive and failure maintenance and downtime of preventive and failure maintenance, which affect the age at which an operating system is replaced, were used to formulate the expected cost and limiting availability functions for repairable systems.

Keywords: repairable system; failure distribution; availability; replacement maintenance.

DOI: 10.1504/IJRS.2020.105888

International Journal of Reliability and Safety, 2020 Vol.14 No.1, pp.1 - 13

Received: 24 Apr 2018
Accepted: 02 Sep 2019
Published online: 16 Mar 2020 *

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