Overall Equipment Effectiveness

The Critical Importance of Accurate OEE Calculation in Manufacturing

INDUSTRIAL AUTOMATION

Kenneth Odhiambo

7/30/20242 min read

a close up of a metal object on a table
a close up of a metal object on a table

In the realm of operational excellence and Lean Manufacturing, Overall Equipment Effectiveness (OEE) is a pivotal metric. However, many manufacturers mistakenly believe they are calculating OEE correctly, often overlooking the comprehensive data integration required from the production process level up to the business planning and logistics level, as depicted in the ISA-95 model.

Understanding the ISA-95 Model

The ISA-95 model provides a framework for integrating enterprise and control systems. It ensures that information flows seamlessly from the shop floor to the top floor and back down, creating a closed-loop system. This integration is crucial for accurate OEE calculation, as it encompasses all aspects of the manufacturing process, from raw material handling to finished product delivery.

Why Accurate OEE Calculation Matters

  1. Performance Insight: Correctly calculating OEE provides a true picture of how well your manufacturing process is running. It highlights areas of inefficiency and potential improvement, enabling targeted actions to enhance productivity.

  2. Closed-Loop Integration: Achieving a closed-loop integration of your manufacturing process is essential for digital transformation. Accurate OEE calculation ensures that data from all levels of the organization is considered, leading to more informed decision-making.

  3. AI and ML Optimization: Accurate OEE data is vital for Artificial Intelligence (AI) and Machine Learning (ML) systems. These systems rely on precise data to help executives make informed business decisions, such as adjusting production rates, maintenance schedules, and quality inspection plans.

  4. Data-Driven Decisions: With accurate OEE, executives can make data-driven decisions to optimize various aspects of the manufacturing process. This includes identifying the best-performing operators, shifts, material vendors, and machines, and implementing corrective actions to improve overall performance.

The Path to Accurate OEE Calculation

To ensure accurate OEE calculation, manufacturers must:

  • Integrate Systems: Utilize the ISA-95 model to integrate data from the production process level to the business planning and logistics level.

  • Leverage Technology: Implement advanced technologies such as AI and ML to analyze OEE data and provide actionable insights.

  • Continuous Improvement: Regularly review and refine OEE calculations to reflect the true performance of the manufacturing process.

By embracing these practices, manufacturers can unlock the full potential of their operations, driving efficiency, productivity, and profitability.

Accurate OEE calculation is not just a metric; it’s a strategic tool that empowers manufacturers to achieve excellence in their operations. By integrating data across all levels and leveraging advanced technologies, you can transform your manufacturing process and stay ahead in the competitive landscape.

Feel free to share your thoughts or ask any questions at info@vasmetering.com with the subject line OEE and watch our YouTube video. Let’s continue the conversation on how to achieve operational excellence in manufacturing.