OEE-Adjusted ROI Field Assessment Checklist

The OEE-Adjusted ROI Field Assessment Checklist bridges the gap between financial modeling and shop-floor reality by embedding OEE—a composite metric ranging from 0% to 100% that quantifies how well a manufacturing unit performs relative to its full potential—as a critical denominator in ROI calculations. Traditional ROI (Net Profit / Investment Cost) often assumes ideal operating conditions; however, in practice, downtime, speed loss, and defects significantly erode output and margin. This checklist mandates field verification of OEE components (Availability = Run Time / Planned Production Time; Performance = Ideal Cycle Time × Total Count / Run Time; Quality = Good Count / Total Count) before ROI estimation, thereby adjusting expected throughput, labor efficiency, energy consumption, and scrap-related cost savings. The assessment includes calibrated data collection protocols (e.g., time-stamped log sheets, PLC data extraction, operator interviews), root-cause validation of loss categories, and sensitivity testing across OEE scenarios (e.g., baseline 65%, target 85%, stretch 90%). It supports decision governance by requiring sign-off from operations, maintenance, engineering, and finance stakeholders, ensuring alignment on both technical feasibility and economic justification. Furthermore, the checklist serves as an audit trail for post-implementation review, enabling delta analysis between projected and realized OEE-adjusted ROI over defined time horizons (e.g., 12–36 months).