Diagnostic Procedures for Evaluating Rolled First Pass Yield under Shift Overtime Pressure
Calculate Rolled First Pass Yield hourly during overtime to trigger automatic line stoppages before compound station defect cascades overwhelm rework loops.
Rework Burden Analysis
Meaning
Quantitative assessments evaluate the total labor and material costs required to correct non conforming units. Conducting a rework burden analysis reveals the hidden expenses associated with fixing a part rather than making it correctly the first time. This calculation includes the energy, time and space consumed by the repair station.
Resource Drain
Every hour spent on a repair is an hour not spent on new production. During the rework burden analysis, managers track how many staff members are diverted from the main line to handle corrections. This diversion reduces the total capacity of the plant and complicates the scheduling of orders.
Schedule Impact
Fixing defective units often creates a backlog that delays the shipment of finished goods. Because rework burden analysis measures the time added to each lot, it provides a more accurate forecast of delivery dates. Unexpected repairs are the most frequent cause of missed deadlines in a manufacturing environment.
Hidden Loss
Some costs are difficult to track without a dedicated audit of the repair area. Rework burden analysis uncovers the value of discarded packaging and the depreciation of the tools used in the fix. Understanding these costs allows the firm to decide if scrapping the part is cheaper than repairing it.