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As stated, the three main categories of OEE are Availability, Performance and Quality. Measuring the performance in each of these categories and then multiplying the result will give you the OEE figure.
OEE CATEGORY CALCULATION
OEE CATEGORY
CALCULATION
Availability
Operating time / Planned production time
Performance
Net operating time / Operating time
Quality
Fully productive time / Net operating time
OEE = Availability x Performance x Quality
When considering OEE, the three main categories are subdivided into what is known as the ‘Six Losses’.
Availability
(1) Planned downtime or external planned event
(2) Breakdowns
Performance
(3) Minor stops
(4) Speed loss
Quality
(5) Production rejects
(6) Rejects on start up
One of the major goals in OEE improvement programs is to reduce or eliminate the Six Losses. It allows us to accurately pinpoint the area of focus that will improve the efficiency of the equipment.
To learn more about OEE Calculations, the Six Losses and how to counteract them, click here to sign up for our OEE Insight Series.
