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Origin and objective

OEE was developed between the 1960s and 1980s as part of the Total Productive Maintenance (TPM) improvement method from Japan. In TPM, multidisciplinary teams incrementally improve the performance of production assets. Measuring OEE then serves as a guideline to detect hidden production losses. After this, TPM has seven more steps.

Objective of OEE

Replacing assumptions with facts

In order to replace assumptions by facts, you don't just need to know where the bottlenecks (that cause losses) are located. Understanding the actual cause of the loss plays an equally important role. OEE makes it clear where in the process there is a bottleneck and, by analysing the factual data, provides insight into the real cause. Assumptions are thus replaced by facts, allowing bottlenecks to be addressed at the source.

Before measuring OEE, you first need to establish the OEE objective is and what exactly needs to be measured to reach the objective(s)..

Examples of objectives can be:

· Making the machinery more reliable with fewer breakdowns · Ensuring higher consistency in output quality · Shortening delivery times to customers

OEE provides insight
into how to achieve
these goals.

OEE sheds light on the losses in the operation relating to Availability, Performance and Quality. These losses have been coined the ‘Six Big Losses’::

Availability loss due to planned (1) and unplanned stops (2)

Performance loss due to small stops (3) and slow cycles (4)

Quality loss due to product rejects during start-up (5) and

active production rejects (6)

Origin and objective

Objective of OEE

Replacing assumptions with facts

OEE provides insight into how to achieve these goals.

OEE provides insight
into how to achieve
these goals.