Port, Crane & Terminal Equipment worked example

Rework Cost at 86% confirmed nonconformance rate: a worked example in port, crane & terminal equipment

What does the result look like when confirmed nonconformance rate reaches 86%? The full calculation is worked below with real intermediate numbers. A QA manager prices the rework hit after weld inspection flags porosity on a batch of trolley structural members.

The inputs for this scenario

  • Components Requiring Rework: 40 units (unchanged)
  • Rework Labor & Materials per Unit: 950 $/unit (unchanged)
  • Confirmed Nonconformance Rate: 86 % (raised for this scenario; the documented default is 75)
  • Crane Access & Retest Charge: 6,000 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Rework cost = flagged components x rework cost per unit x nonconformance rate% + access/retest) to the inputs above produces each figure below.
  • At this operating point the engine returns 38,680 $ for total rework cost, the number this scenario is built around.
  • At this operating point the engine returns 967 $ / piece for rework cost per unit.
  • At this operating point the engine returns 32,680 $ for variable rework cost.
  • At this operating point the engine returns 6,000 $ for fixed rework cost adder.

How this compares with the baseline

  • Against the tool's baseline example, where confirmed nonconformance rate sits at 75% and the headline result is 34,500 $, this scenario comes in 12.12% above the baseline at 38,680 $.
  • A figure at this level is achievable when confirmed nonconformance rate is genuinely sustained, not just peaked for a shift. It applies one blended per-unit rework cost and a single nonconformance rate, so it does not separate cheap cosmetic fixes from major structural weld repairs within the same batch.

Results at a glance

  • Total rework cost: 38,680 $ (headline result)
  • Rework cost per unit: 967 $ / piece
  • Variable rework cost: 32,680 $
  • Fixed rework cost adder: 6,000 $

Run it with your numbers

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

Last reviewed 2026-05-12.