DETERMINATION OF OPERATIONS PRODUCTION DOWNTIME FOR GROUP REPLACEMENTMAINTENANCE POLICY

Prediction of the duration of the downtime caused by maintenance, espe cially in the cases where the system considered consists of several re pairable items, presents a challenge for maintenance managers, because of possible revenue losses during these intervals of time. Responds t o this challenge through the new methodology for the fast, accurate pr ediction of maintainability measures related to the group replacement maintenance policy. It is applicable to group maintenance tasks in whi ch individual replacement tasks are performed: simultaneously, sequent ially, and combined. The method presented could be successfully used a t the planning stage of the operations/production process when the inf ormation available is based on previous experience only, as well as at the stage when the process is performed. The applicability and useful ness of the methodology proposed is demonstrated through an illustrati ve numerical example.