OEE & Factory Performance worked example

Factory Performance Score with severity of performance loss of 20 score: a worked example

What does the result look like when severity of performance loss reaches 20 score? The full calculation is worked below with real intermediate numbers. Use it when factory performance in oee and factory performance needs a defensible ranking against other oee and factory performance risks for the next review.

The inputs for this scenario

  • Severity of performance loss: 20 score (raised for this scenario; the documented default is 8)
  • Frequency of occurrence: 6 score (unchanged)
  • Detectability of the issue: 7 score (unchanged)

Working through the calculation

  • Applying the documented formula (Weighted score = severity × 0.40 + occurrence × 0.35 + detection × 0.25) to the inputs above produces each figure below.
  • At this operating point the engine returns 11.85 score for factory performance risk score, the number this scenario is built around.
  • At this operating point the engine returns 20 score for factory performance severity score.
  • At this operating point the engine returns 6 score for factory performance occurrence score.
  • At this operating point the engine returns 7 score for factory performance detection score.

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 68.09% above the baseline at 11.85 score.
  • A figure at this level is achievable when severity of performance loss is genuinely sustained, not just peaked for a shift. The score is only as good as the rating discipline behind it; inconsistent scoring between people makes cross-issue comparison unreliable, so anchor each scale with examples.

Results at a glance

  • Factory performance risk score: 11.85 score (headline result)
  • Factory performance severity score: 20 score
  • Factory performance occurrence score: 6 score
  • Factory performance detection score: 7 score

Run it with your numbers

  • Every input above is editable in the live Factory Performance Score calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.