Industrial Valves, Actuators & Flow Control worked example

Certification Documentation Burden at 14% qa review and customer approval overhead: a worked example

Suppose qa review and customer approval overhead falls to 14%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate total labor hours to prepare valve certification packages (MTRs, test certificates, data books) for a production order, based on valve count, hours per package, and QA review overhead.

The inputs for this scenario

  • Valves requiring certification packages: 50 valves (held at the documented default)
  • Average hours per certification package: 1.5 hr / package (held at the documented default)
  • QA review and customer approval overhead: 14 % (the input this scenario stresses; the baseline uses 20)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base documentation hours = valves x hours per certification package.
  • Total documentation burden (hours) works out to 38 hr at these inputs, and this is the headline figure for the scenario.
  • Base compilation hours works out to 33.33 hr at these inputs.
  • QA review and approval hours added works out to 14 % at these inputs.
  • Certification packages completed per hour works out to 1.5 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where qa review and customer approval overhead sits at 20% and the headline result is 40 hr, this scenario comes in 5% below the baseline at 38 hr.
  • It computes total documentation labor hours to produce and approve certification packages for a batch of valves. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total documentation burden (hours): 38 hr (headline result)
  • Base compilation hours: 33.33 hr
  • QA review and approval hours added: 14 %
  • Certification packages completed per hour: 1.5 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Certification Documentation Burden calculator, set qa review and customer approval overhead to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.