A production scheduling model with maintenance

In the paper, a production model with maintenance is presented. Successive failure-free times of a bottleneck are supposed to have predefined distributions and are followed by distributed times of repair. Having values of parameters: mean time to failure and mean time of repair, a predictive schedule is generated. To assess wastes due to unplanned events of the bottleneck, such as unplanned downtime the overall equipment effectiveness indicator is applied. To assess failure rate of the bottleneck the parts per million opportunities indicator is applied. Prediction capability, detection capability of a failure and effects of the failure occurrence are evaluated and registered in the exploitation failure mode and effects analysis form. The objective of the presented predictive scheduling model is to achieve: zero machine’s failures, zero defects, zero accidents at work.