Operational Excellence
OEE Definitions
Overall Equipment Effectiveness, or OEE, is simply a formula,
OEE = Availability Ratio × Speed
Ratio × Quality Ratio
- Availability Ratio = actual run time ÷ scheduled time
- Speed Rate Ratio = ideal speed ÷ actual speed
- Quality Rate Ratio = amount of good product ÷ total amount of product
The OEE metric is used as a benchmark to determine overall asset usage. A world class OEE would be considered 85%. Simply put OEE is a disciplined, systematic approach to monitoring the effectiveness of an organization’s capital investment.
Truth, like surgery,
may hurt, but it cures. -Han Suyin
The power of OEE is in the surprising truths that the data reveals. While most plant personnel firmly believe that their operation is performing at world class levels of OEE, a true OEE calculation usually reveals that a plant is operating at an OEE of 60%. This offers most plants, a chance for a 20% increase in OEE without the need for additional capital and/or personnel.
OEE Consulting and Implementation
Automated Systems, Inc. (ASI) can assist an organization in implementing a customized OEE solution. ASI is a Certified Implementation Partner for Parsec Automation, the developer of TrakSYS™, the leading real-time performance management (RPM) and enterprise manufacturing intelligence (EMI) software.
In the planning stages of a project, ASI assists our clients in defining the project and generating the required specification documentation. This planning phase insures that processes and event definitions are well defined and that a smooth implementation for both discrete and batch processes is possible.
ASI engineering staff can integrate existing, PLC, SCADA, and MES systems with TrakSYS™ and then customize reporting features. This can often be accomplished with minimal or no re-qualification of the affected systems.
ASI professionals work with our clients to analyze the OEE data being provided by the system, this post start-up evaluation ensures that an OEE implementation realize its full benefits. These benefits include the following;
- Reduce operating costs
- Better manage, allocate and spend capital
- Speed changeovers
- Establish equipment reliability best practices
- Develop equipment maintenance strategies
- Achieve more productive shutdowns
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