Operational Availability in systems is a measurement of how long a 'system' has been available to use when compared with how long it should have been available.
You will find the OA metric on the Operator Portal, Production Dashboards, and in many Reports.
Calculation
Operational Availability (OA) = (Planned Production Minutes - Production Downtime Minutes - Planned Downtime Minutes) / Planned Production Minutes * 100
**If you aren't using the production module and still want to calculate OA; the calculation will use ((Number of Machines * Available Shift Minutes) - Downtime Minutes))/(Number of Machines * Available Shift Minutes) * 100) "Number of machines" is calculated by taking all dispatches within a specified time frame that have a down impact for all the lines in the area selected, we then find the number of unique machines found in those dispatches.
Calculation for multiple pitches:
Operational Availability (OA) = (sum(Planned Production Minutes) - sum(Production Downtime Minutes) - sum(Planned Downtime Minutes)) / sum(Planned Production Minutes) * 100
Notes:
- In the case of calculating OA, only the impacting downtime minutes are taken into consideration. Any planned downtime is not part of this calculation unless the Planned Downtime: Exclude from Availability Metric is enabled, then the planned downtime is subtracted in the calcluation.
- We do not display "Production Downtime Minutes" on the Operator Portal or the Production Pitch Boards. Production Downtime minutes is displayed on the Weekly Production Summary report.
- If your Dispatch Type has 'Planned Downtime: Exclude from Availability Production Metric' enabled, the OA calculation will subtract that Dispatch Type's Planned Downtime in Reports or Metrics.
- Prior to the release of the Planned Downtime Exclude settings, neither LMPU nor OA included Planned Downtime in their calculations.
- Planned Downtime will only impact LMPU or OA calculations if the Dispatch Types have the "Exclude from Availability/LMPU" toggle enabled. If the toggle(s) are not activated, the Planned Downtime defaults to 0, keeping the calculations for both metrics the same as before the release.
- Regardless of the impact type, if either of the toggles is enabled, the planned downtime will be subtracted in the applicable OA/LMPU calculations.
- PLEASE NOTE: The Planned Downtime: Exclude From dispatch type settings are intended to be enabled on dispatch types that aren't marked as down impact.
Prorating
This metric will be prorated in certain areas of the application. Please see the article on Prorated Production Metrics for more information.