Nuclear & Critical Infrastructure Manufacturing worked example

Quality Hold Point Delay at 18% witness coordination and re-presentation allowance: a worked example

This worked example runs the quality hold point delay numbers for a tougher week than the baseline: 18% witness coordination and re-presentation allowance instead of the typical 25%. Estimate the schedule time lost at quality hold points and witness points in nuclear and critical infrastructure manufacturing, so planners can protect the build schedule and staff QA sign-off.

The inputs for this scenario

  • Hold points to clear: 20 hold points (held at the documented default)
  • Hold points cleared per hour: 2 hold points / hr (held at the documented default)
  • Witness coordination and re-presentation allowance: 18 % (the input this scenario stresses; the baseline uses 25)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base hold point delay = hold points to clear รท hold points cleared per hour.
  • Required hold point delay works out to 11.8 hr at these inputs, and this is the headline figure for the scenario.
  • Base hold point delay works out to 10 hr at these inputs.
  • Witness and re-presentation allowance applied works out to 18 % at these inputs.
  • Hold points cleared per hour works out to 2 hold points / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where witness coordination and re-presentation allowance sits at 25% and the headline result is 12.5 hr, this scenario comes in 5.6% below the baseline at 11.8 hr.
  • Use it when sequencing an ITP, building a fabrication schedule, or quoting a nuclear job where mandatory witness and hold points sit on the critical path. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Required hold point delay: 11.8 hr (headline result)
  • Base hold point delay: 10 hr
  • Witness and re-presentation allowance applied: 18 %
  • Hold points cleared per hour: 2 hold points / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Quality Hold Point Delay calculator, set witness coordination and re-presentation allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.