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1 Journal of Polish Safety and Reliability Association

1 2013

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An optimal preventive maintenance policy of parallel-series systems

Duarte J. C., Craveiro J. T., Trigo T. P.

Journal of Polish Safety and Reliability Association

2013

Vol. 4, No. 1

29--34

This paper presents an algorithm to solve the problem of maintenance management of a two state parallel-series system based on preventive maintenance over the different system components. It is assumed that all components of the system exhibit Weibull hazard function and constant repair rate and that preventive maintenance would bring the system to the as good as new condition. The algorithm calculates the interval of time between preventive maintenance tasks for each component, minimizing the costs, and in such a way that the total downtime, in a certain period of time, does not exceed a predetermined value. It is presented an industrial case study where the algorithm is applied.