Conveyors worked example

Scrap Impact on Line Output at 1.08% maximum acceptable scrap rate: a worked example

Suppose maximum acceptable scrap rate falls to 1.08%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate how scrap or rejects reduce good line output versus the planned production count.

The inputs for this scenario

  • Scrapped or rejected line units: 185 units (held at the documented default)
  • Total units produced by line: 9,400 units (held at the documented default)
  • Maximum acceptable scrap rate: 1.08 % (the input this scenario stresses; the baseline uses 1.5)

Working through the calculation

  • The calculation starts from the formula this tool documents: Line scrap rate = scrapped units ÷ total produced units × 100.
  • Line scrap rate works out to 1.97 % scrap at these inputs, and this is the headline figure for the scenario.
  • Scrap-rate gap to target works out to -0.89 points at these inputs.
  • Scrapped or rejected units works out to 185 units at these inputs.
  • Total units produced works out to 9,400 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where maximum acceptable scrap rate sits at 1.5% and the headline result is 1.97 % scrap, this scenario lands almost exactly on the baseline at 1.97 % scrap.
  • It converts scrapped units and total produced units into a line scrap rate percentage, then compares that rate against your maximum acceptable scrap target. 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

  • Line scrap rate: 1.97 % scrap (headline result)
  • Scrap-rate gap to target: -0.89 points
  • Scrapped or rejected units: 185 units
  • Total units produced: 9,400 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Scrap Impact on Line Output calculator, set maximum acceptable scrap rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.