OEE & Factory Performance worked example

Operator Intervention Rate at 65% coverage factor: a worked example

Suppose coverage factor falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate intervention rate from interventions and runtime.

The inputs for this scenario

  • Operator interventions: 1,200 events (held at the documented default)
  • Runtime: 8 hr (held at the documented default)
  • Coverage factor: 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Effective throughput = output quantity ÷ runtime × efficiency.
  • Effective operator intervention rate throughput works out to 97.5 events / hr at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 150 events / hr at these inputs.
  • Expected operator intervention rate efficiency works out to 65 % at these inputs.
  • Operator intervention rate runtime works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where coverage factor sits at 90% and the headline result is 135 events / hr, this scenario comes in 27.78% below the baseline at 97.5 events / hr.
  • It computes effective throughput in events per hour by taking output divided by runtime and scaling it down by the efficiency factor that captures intervention and other losses. 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

  • Effective operator intervention rate throughput: 97.5 events / hr (headline result)
  • Raw throughput: 150 events / hr
  • Expected operator intervention rate efficiency: 65 %
  • Operator intervention rate runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Operator Intervention Rate calculator, set coverage factor to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.