Nuclear & Critical Infrastructure Manufacturing worked example

Nonconformance Disposition Time at 23% engineering review and corrective action allowance: a worked example in nuclear & critical infrastructure manufacturing

Push engineering review and corrective action allowance up to 23% and the picture changes. This example computes every intermediate figure at that operating point. Use it when a batch of nonconformance reports needs review and disposition and you need an honest estimate of the hours before they hold up shipment.

The inputs for this scenario

  • Nonconformance reports to disposition: 30 NCRs (unchanged)
  • Dispositions completed per hour: 3 NCRs / hr (unchanged)
  • Engineering review and corrective action allowance: 23 % (raised for this scenario; the documented default is 20)

Working through the calculation

  • Applying the documented formula (Base disposition hours = nonconformance reports to disposition รท dispositions completed per hour) to the inputs above produces each figure below.
  • At this operating point the engine returns 12.3 hr for required disposition hours, the number this scenario is built around.
  • At this operating point the engine returns 10 hr for base disposition hours.
  • At this operating point the engine returns 23 % for review and corrective action allowance applied.
  • At this operating point the engine returns 3 NCRs / hr for dispositions completed per hour.

How this compares with the baseline

  • Against the tool's baseline example, where engineering review and corrective action allowance sits at 20% and the headline result is 12 hr, this scenario comes in 2.5% above the baseline at 12.3 hr.
  • It computes the total labor hours to disposition a given number of NCRs at a known disposition rate, padded by an allowance for engineering review and corrective action. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Required disposition hours: 12.3 hr (headline result)
  • Base disposition hours: 10 hr
  • Review and corrective action allowance applied: 23 %
  • Dispositions completed per hour: 3 NCRs / hr

Run it with your numbers

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

Last reviewed 2026-05-12.