Production performance should show where time and material are lost, using definitions that stay consistent between shifts. Begin with the practical question: whether a line met its scheduled output, used its available time effectively and produced acceptable product.
Record planned production time, running time, total output and good output in compatible units. State whether quantities represent pieces, kilograms or another production unit. Separate downtime, speed losses, rejects and rework rather than combining them into a single unexplained percentage. Compare lines only when their measurement boundaries are compatible.
Investigate the largest recurring loss with production and quality staff before setting improvement targets. A high output rate can conceal waste or an unsafe process adjustment. Keep the original measurements and the calculation method so that a reported improvement can be checked against its effect on quality and delivery.
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