Production Ramp, Scale-Up & Launch Readiness worked example

Ramp Scrap Exposure at 12% sorting, containment, and rework allowance: a worked example

What does the result look like when sorting, containment, and rework allowance reaches 12%? The full calculation is worked below with real intermediate numbers. Use it when ramp scrap exposure in production ramp, scale-up and launch readiness needs a defensible run time before a quote goes out.

The inputs for this scenario

  • Ramp units at elevated scrap risk: 120 units (unchanged)
  • Ramp screening and rework rate: 12 units / min (unchanged)
  • Sorting, containment, and rework allowance: 12 % (raised for this scenario; the documented default is 10)

Working through the calculation

  • Applying the documented formula (Base ramp scrap exposure time = ramp scrap exposure workload ÷ ramp scrap exposure completion rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 11.2 hr for required ramp scrap exposure time, the number this scenario is built around.
  • At this operating point the engine returns 10 hr for base ramp scrap exposure time.
  • At this operating point the engine returns 12 % for ramp scrap exposure allowance applied.
  • At this operating point the engine returns 12 pieces / min for ramp scrap exposure completion rate.

How this compares with the baseline

  • Against the tool's baseline example, where sorting, containment, and rework allowance sits at 10% and the headline result is 11 hr, this scenario comes in 1.82% above the baseline at 11.2 hr.
  • A figure at this level is achievable when sorting, containment, and rework allowance is genuinely sustained, not just peaked for a shift. It assumes a steady screening rate; in practice screening slows when defect complexity varies, and it doesn't tell you the scrap rate itself — only the hours to handle a known at-risk population.

Results at a glance

  • Required ramp scrap exposure time: 11.2 hr (headline result)
  • Base ramp scrap exposure time: 10 hr
  • Ramp scrap exposure allowance applied: 12 %
  • Ramp scrap exposure completion rate: 12 pieces / min

Run it with your numbers

  • Every input above is editable in the live Ramp Scrap Exposure calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.