Influence of Preventive Maintenance Frequency on Manufacturing Systems Performances

摘要

Preventive maintenance (PM) is often scheduled in order to minimize the maintenance cost or to comply with production planning requirements. However, maintenance interruptions affect process time variability and resource utilization, thus causing adverse effects on the operational performance of the manufacturing system such as Work in Process (WIP) and cycle time. In this paper some approximate queueing models are utilize to asses the impact of PM interval on WIP. It is shown that maintenance intervals corresponding to a minimum maintenance cost or minimum WIP can be quite different thus asking for trade-off decisions by plant managers.