How do you calculate quality hold point delay?

Divide the number of hold points to clear by how many you clear per hour to get base delay, then multiply by one plus your coordination allowance. With 20 hold points at 2 per hour and a 25% allowance, base delay is 10 hours and required delay is 12.5 hours.

What is a hold point versus a witness point?

At a hold point, work must physically stop and cannot continue until the inspection is performed and released. At a witness point, the inspection is scheduled but work may proceed if the witness does not attend by a set time. Hold points carry far more schedule risk, which is why this allowance matters.

What is a good clearance rate for hold points?

It depends on inspection complexity, but on routine dimensional and visual hold points a clearance rate of 2 to 4 per hour is realistic. Hold points requiring NDE review, document sign-off, or multi-party witness drop well below 1 per hour.

Why add a witness coordination allowance?

Because the inspector or ANI is rarely standing by the moment you are ready. The allowance, 25% in the example, captures time lost paging witnesses, waiting for availability, and re-presenting work that failed first presentation.

How can I reduce hold point delay?

Batch hold points so a witness clears several in one visit, give advance notice against the ITP, and ensure documentation packages are complete before calling the inspector so work is not rejected on first presentation.

Does this replace the inspection and test plan schedule?

No. It estimates the hours hold points consume so you can place them realistically on the schedule, but the ITP itself defines which points are mandatory and who must witness them.

Nuclear & Critical Infrastructure Manufacturing calculator

Quality Hold Point Delay Calculator

A quality hold point is a mandatory stop in a nuclear or safety-related fabrication where work cannot proceed until an inspector, ANI, or owner's witness signs off against the inspection and test plan (ITP). This calculator converts the number of hold points on a job and your clearance rate into the schedule hours they will consume, then inflates that base time for the real-world friction of coordinating witnesses and re-presenting work that was missed or rejected. Quality engineers, ITP planners, and project schedulers in ASME Section III, NQA-1, and nuclear new-build environments use it to keep hold points off the critical path. It matters because hold points are where otherwise-fast fabrication stalls waiting on people, not machines.

What this calculator does

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.
Use it when a build has many hold points and you need to see how much wait time accumulates before QA or customer witness sign-off releases the work.
It computes the total hours to clear all hold points on a job by dividing hold points by your per-hour clearance rate and adding a percentage allowance for witness coordination and re-presentation.

Formula used

Base hold point delay = hold points to clear ÷ hold points cleared per hour
Required hold point delay = base hold point delay × (1 + witness coordination and re-presentation allowance)

Inputs explained

Hold points to clear:
Hold points cleared per hour:
Witness coordination and re-presentation allowance:

How to use the result

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.
It assumes a steady average clearance rate; a single contested hold point or a delayed ANI/owner witness can blow past the modeled hours regardless of the average.

Common questions

How do you calculate quality hold point delay? Divide the number of hold points to clear by how many you clear per hour to get base delay, then multiply by one plus your coordination allowance. With 20 hold points at 2 per hour and a 25% allowance, base delay is 10 hours and required delay is 12.5 hours.
What is a hold point versus a witness point? At a hold point, work must physically stop and cannot continue until the inspection is performed and released. At a witness point, the inspection is scheduled but work may proceed if the witness does not attend by a set time. Hold points carry far more schedule risk, which is why this allowance matters.
What is a good clearance rate for hold points? It depends on inspection complexity, but on routine dimensional and visual hold points a clearance rate of 2 to 4 per hour is realistic. Hold points requiring NDE review, document sign-off, or multi-party witness drop well below 1 per hour.
Why add a witness coordination allowance? Because the inspector or ANI is rarely standing by the moment you are ready. The allowance, 25% in the example, captures time lost paging witnesses, waiting for availability, and re-presenting work that failed first presentation.
How can I reduce hold point delay? Batch hold points so a witness clears several in one visit, give advance notice against the ITP, and ensure documentation packages are complete before calling the inspector so work is not rejected on first presentation.

Last reviewed 2026-05-12.