OEE Parameters Calculation for Standard Units
The classic OEE mode approach to the OEE calculation for standard units measures the performance and quality losses in terms of loss of production availability or productivity that are attributed to the performance and quality, respectively.
The classic OEE modes are Standard, None, Long Running 840D, and Long Running EDM are defined for a Production Unit in Plant Applications Administrator. The OEE calculation formula for all these modes are same.
The OEE parameters Availability, Performance, and Quality for the standard Production Units are calculated based on the formula described in the following table.
OEE Parameter | Calculation Formula |
---|---|
Availability | Availability = Net availability run time/Planned production time Where, Net availability run time = Planned production time - Availability downtime |
Performance | Performance = Actual production/Target production Where,
|
Quality | Quality = Net production/Actual production Where,
|
Classic-Mode OEE Parameters Calculation
In this example, the value for each OEE parameter per day for a bottle manufacturing plant is as shown in the following table.
Inputs | Value |
---|---|
Planned production time | 24 hr |
Availability downtime | 1 hr |
Actual production | 900 bottles |
Target production | 1000 bottles |
Waste | 100 bottles |
The following table provides the value of each OEE parameter calculated based on the formula described in the earlier section.
OEE parameter | Parameter value | Formula used | Explanation |
---|---|---|---|
Availability | 23/24 = 0.125 | Availability = Net availability run time/Planned production time. | Planned production time = 24 hr Availability downtime = 1 hr Net availability run time = 24 - 1 = 23 hr |
Performance | 900/1000 = 0.9 | Performance = Actual production/Target production | Actual production = 900 bottles Target production = 1000 bottles |
Quality | 800/900 = 0.8889 | Quality = Net production/Actual production | Actual production = 900 bottles Waste = 100 bottles Net production = 900 - 100 = 800 bottles |