OEE and Scope

Honest OEE Scope

The final lesson states the boundary: OEE is diagnostic arithmetic, not an optimization proof.

highlighted = computed this step

Diagnostic metric

OEE is a diagnostic metric for this pinned time and output data.

OEE=133/192\text{OEE}=133/192
OEE productThe chart recomputes the final OEE product from the three exact factors.OEE productOEE = 7/8 x 5/6 x 19/20 = 133/192planned production timedowntime 60operating 420planned 480availability7/8performance5/6quality19/20factornumeratordenominatorvalueavailability4204807/8performance7008405/6quality66570019/20diagnostic metric, not an optimizer

Not an optimizer

It does not choose a schedule, staffing plan, maintenance plan, or capacity plan.

OEE is not an optimizer\text{OEE is not an optimizer}
OEE productThe chart recomputes the final OEE product from the three exact factors.OEE productOEE = 7/8 x 5/6 x 19/20 = 133/192planned production timedowntime 60operating 420planned 480availability7/8performance5/6quality19/20factornumeratordenominatorvalueavailability4204807/8performance7008405/6quality66570019/20diagnostic metric, not an optimizer

Not root cause

It does not identify root causes by itself.

root-cause analysis is outside scope\text{root-cause analysis is outside scope}
OEE productThe chart recomputes the final OEE product from the three exact factors.OEE productOEE = 7/8 x 5/6 x 19/20 = 133/192planned production timedowntime 60operating 420planned 480availability7/8performance5/6quality19/20factornumeratordenominatorvalueavailability4204807/8performance7008405/6quality66570019/20diagnostic metric, not an optimizer

Honesty note

OEE is a diagnostic metric, not an optimizer. It does not identify root causes or prove a schedule, staffing, maintenance, or capacity plan.

diagnostic arithmetic only\text{diagnostic arithmetic only}
OEE productThe chart recomputes the final OEE product from the three exact factors.OEE productOEE = 7/8 x 5/6 x 19/20 = 133/192planned production timedowntime 60operating 420planned 480availability7/8performance5/6quality19/20factornumeratordenominatorvalueavailability4204807/8performance7008405/6quality66570019/20diagnostic metric, not an optimizer