OptimalOEE™ Wiki / Operational performance
The frame
Operational performance indicators
Operational performance indicators, OPIs, are the handful of measures that tell you how a production operation is really performing against its targets. OEE is the flagship, but on continuous and batch assets it is one of several. OptimalOEE™ tracks the scorecard, from source and auditable.
Why a scorecard, not one number
On a discrete, packaged line a single OEE percentage captures effectiveness well. On continuous or batch process assets, where there is no clean unit count or fixed cycle, a scorecard reads truer: availability and throughput for output, the reliability measures for the maintenance story, and quality or yield for the product. Leading with OPIs meets asset-intensive operations where they already think.
The OPI scorecard
| OEE flagship | Overall equipment effectiveness: availability × performance × quality. The headline indicator for line and asset effectiveness. See Understanding OEE. |
|---|---|
| Availability / uptime | Share of planned time the asset was running. The maintenance and reliability lever. |
| Throughput / rate | Actual output rate, units or tonnes per hour, against target. The capacity lever on continuous assets. |
| Yield / first-pass quality | Good output as a share of total, first time, without rework. The product-quality lever. |
| MTBF | Mean time between failures. How reliable the asset is; the driver behind availability. |
| MTTR | Mean time to repair. How maintainable the asset is when it does fail. |
| Schedule adherence | Planned versus actual production. How predictable the operation is. |
| PM compliance | Planned maintenance completed on time. A leading indicator of future availability. |
The metrics, defined
OEE = Availability × Performance × Quality
Availability (asset) = MTBF ÷ (MTBF + MTTR)
MTBF = Operating time ÷ number of failures
MTTR = Total repair time ÷ number of repairs
First-pass yield = Units good first time ÷ units started
Schedule adherence = Actual production ÷ scheduled production
PM compliance = PMs completed on schedule ÷ PMs due
These are standard reliability and CMRP metrics. OptimalOEE™ computes each from source, so the scorecard is one consistent, auditable set rather than numbers assembled from separate spreadsheets.
From source, across the scorecard
The differentiator is not the list of indicators, it is that OptimalOEE™ computes every one of them from source on each read and keeps the change history on an audit trail. So the scorecard is current, explainable to the raw reading and defensible under audit, not a set of numbers re-keyed into a slide.
OEE leads, the scorecard completes
For a discrete or FMCG line, lead with OEE. For a continuous or asset-intensive operation, lead with availability, throughput and the reliability measures, and let OEE sit within them. Either way the depth is the same: read Understanding OEE for the flagship, and Calculating OEE for the maths.