Nuclear & Critical Infrastructure Manufacturing worked example

Qualified Supplier Audit Cost at 110% audit scope share: a worked example

Push audit scope share up to 110% and the picture changes. This example computes every intermediate figure at that operating point. Use it when planning a supplier qualification or surveillance audit program and you need a defensible cost across the audit days, day rate, and fixed travel and reporting cost.

The inputs for this scenario

  • Auditor-days planned: 12 auditor-days (unchanged)
  • Loaded auditor day rate: 1,200 $ / auditor-day (unchanged)
  • Audit scope share: 110 % (raised for this scenario; the documented default is 100)
  • Fixed travel and reporting cost: 3,500 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable audit cost = auditor-days planned × loaded auditor day rate × audit scope share) to the inputs above produces each figure below.
  • At this operating point the engine returns 19,340 $ for total audit cost, the number this scenario is built around.
  • At this operating point the engine returns 1,612 $ / piece for cost per auditor-day.
  • At this operating point the engine returns 15,840 $ for variable audit cost.
  • At this operating point the engine returns 3,500 $ for fixed travel and reporting cost.

How this compares with the baseline

  • Against the tool's baseline example, where audit scope share sits at 100% and the headline result is 17,900 $, this scenario comes in 8.04% above the baseline at 19,340 $.
  • It computes the total loaded cost of a supplier audit from planned auditor-days, the loaded day rate, the share of scope you are covering, and fixed travel and reporting cost. 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

  • Total audit cost: 19,340 $ (headline result)
  • Cost per auditor-day: 1,612 $ / piece
  • Variable audit cost: 15,840 $
  • Fixed travel and reporting cost: 3,500 $

Run it with your numbers

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

Last reviewed 2026-05-12.