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Mathematical Problems in Engineering
Volume 2014, Article ID 157282, 11 pages
Research Article

Opportunistic Maintenance Policy for a System with Hidden Failures: A Multicriteria Approach Applied to an Emergency Diesel Generator

Department of Production Engineering, School of Engineering, Centre for Technology and Geosciences, Federal University of Pernambuco, 50.670-901 Recife, PE, Brazil

Received 19 April 2014; Revised 20 June 2014; Accepted 21 June 2014; Published 6 August 2014

Academic Editor: Massimo Scalia

Copyright © 2014 Cristiano A. V. Cavalcante and Rodrigo S. Lopes. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper aims to develop a maintenance policy to support the maintenance decisions of an emergency system that supplies electricity when failure of the primary system occurs in a health facility. An Opportunistic maintenance policy was developed, in which failures are hidden and inspections are performed to detect the state of the system and subsystems. Failure in the system can have negative consequences for the health unit. A multicriteria model that considers cost and availability criteria and preference of the maintenance manager of the health unit was developed.