Selective maintenance model for modular system

In many situations, systems are required to perform maintenance actions at the planned down time. Because of the limitation of down time, it is often impossible to perform maintenance action for all components in system. Therefore, the maintenance manager should make a decision to choose part of the components to be maintained in the limited down time. This problem is called selective maintenance. In this paper, we provide a selective maintenance model for modular system. We formulate the selective maintenance model as a non-linear programming problem. The maximum reliability gained by maintaining the modular system is formulated as objective. And we show the effectiveness of the proposed model via a numerical example.