OEE & Factory Performance worked example

Factory Performance Score with severity of performance loss of 4 score: a worked example

Suppose severity of performance loss falls to 4 score. This page works the full calculation at that level so you can see exactly which result moves and by how much. Score factory performance from availability, throughput, and quality factors.

The inputs for this scenario

  • Severity of performance loss: 4 score (the input this scenario stresses; the baseline uses 8)
  • Frequency of occurrence: 6 score (held at the documented default)
  • Detectability of the issue: 7 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Weighted score = severity × 0.40 + occurrence × 0.35 + detection × 0.25.
  • Factory performance risk score works out to 5.45 score at these inputs, and this is the headline figure for the scenario.
  • Factory performance severity score works out to 4 score at these inputs.
  • Factory performance occurrence score works out to 6 score at these inputs.
  • Factory performance detection score works out to 7 score at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where severity of performance loss sits at 8 score and the headline result is 7.05 score, this scenario comes in 22.7% below the baseline at 5.45 score.
  • It computes a single weighted risk score from severity (40%), occurrence (35%), and detection (25%) ratings on a common scale. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Factory performance risk score: 5.45 score (headline result)
  • Factory performance severity score: 4 score
  • Factory performance occurrence score: 6 score
  • Factory performance detection score: 7 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Factory Performance Score calculator, set severity of performance loss to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.