Maintenance strategy selection for electric-motor components using analytical hierarchy process and goal programming

This study aims to select optimal maintenance strategy for components of an electric motor of the National Iranian Oil Refining and Distribution Company. In this regard, a method based on goal programming and analytic hierarchy process is presented. Since increasing the equipment reliability is an important issue, reliability-based maintenance strategies as alternatives are introduced. Furthermore, on one hand, we know that maintenance cost consists of a considerable percentage of production cost; on the other hand, the risk of equipment failure is a main factor on safety personnel. Consequently, two factors of cost and risk of failure are considered as evaluation criteria of maintenance strategies.