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Best of the Best
Suppose a firm collected the data shown below, over a four week period, to measure
its OEE.
| Week |
OEE % |
Availability % |
Performance % |
Quality % |
| 1 |
44.6 |
65.0 |
70.0 |
98.0 |
| 2 |
43.8 |
58.0 |
77.0 |
98.0 |
| 3 |
37.0 |
47.0 |
80.0 |
97.5 |
| 4 |
31.9 |
44.7 |
72.5 |
98.5 |
It can be seen that the average overall equipment effectiveness is only 39.4%.
However, if we pick out the best rates for Availability, Performance, and Quality
(highlighted in the table) and calculate the OEE using these rates, we get:
OEE = 65% x 80% x 98% = 51.2%
| The best of the best should be
the first target for OEE. The necessary rates have already been achieved at
different times - the goal now is to achieve them at the same time!
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