Overall Equipment Effectiveness Overall Equipment Effectiveness OEE is a “best practices” metric that identifies the percentage of planned production time that is truly productive. An OEE score of 100% represents perfect production: manufacturing only good parts, as fast as possible, with no downtime. OEE is useful as both a benchmark and a baseline: - As a benchmark it can be used to compare the performance of a given production asset to industry standards, to similar in-house assets, or to results for different shifts working on the same asset;  - As a baseline it can be used to track progress over time in eliminating waste from a given production asset (leanproduction.com, 2020). OEE is a percentage metric (%) and is calculated by the simple multiplication of three factors: Availability   X   Performance   X   Quality   =   OEE Below we describe and detail every single factor that influences this important production indicator. Factors having an impact on OEE - Avail

Maintenance The maintenance concept is the comprehensive description of the maintenance constraints, considerations as well as plans to provide support to the operations of the system or equipment in the development process. The concept of maintenance of a system or equipment is derived from the operational concepts and the operation is the major driver in the design and support of the system. Furthermore, the requirements of the maintenance concepts are translated into the support requirements and system design. The maintenance concept continues to come into a form the decisions of the design system, as well as the product support requirements and the detailed maintenance as the activities of the system design, are completed (Waeyenbergh & Pintelon, 2002). At the time of developing the maintenance concept of the system, some important guidelines must be considered which are provided below: The overall general repair policies like the criteria of repair or replacement of equi