Managing Downtime and Calculating True Shop Rate

This document is a technical report that examines the impact of maintenance and parts management on machine downtime in manufacturing settings. It outlines a scenario involving a machinist who faces production delays due to the inability to locate inexpensive parts necessary for machine repair. The report emphasizes the importance of accurate shop rate calculations, which should include both machine costs and labor costs associated with downtime. It presents findings from industry experts, highlighting that many organizations do not adequately factor in the lost time and productivity associated with mismanaged parts inventory. Furthermore, it discusses the challenges of having multiple suppliers and the lack of collaboration between purchasing and maintenance departments. The report concludes by suggesting strategies for improving parts management, such as organized storeroom solutions and better collaboration with suppliers, to enhance operational efficiency and minimize downtime.