Industrial Heat Pumps & Electrified Thermal Systems worked example

Leak Test Workload at 22% evacuation, stabilization, and retest allowance: a worked example

Suppose evacuation, stabilization, and retest allowance falls to 22%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate technician or bench hours required for leak testing heat pump circuits and thermal assemblies from scope count, throughput, and retest allowance.

The inputs for this scenario

  • Circuits or assemblies to leak test: 60 assemblies (held at the documented default)
  • Leak tests completed per hour: 6 assemblies / hr (held at the documented default)
  • Evacuation, stabilization, and retest allowance: 22 % (the input this scenario stresses; the baseline uses 30)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base leak test workload = circuits or assemblies to leak test รท leak tests completed per hour.
  • Required leak test workload works out to 12.2 hr at these inputs, and this is the headline figure for the scenario.
  • Base leak test workload works out to 10 hr at these inputs.
  • Evacuation, stabilization, and retest allowance works out to 22 % at these inputs.
  • Leak tests completed per hour works out to 6 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where evacuation, stabilization, and retest allowance sits at 30% and the headline result is 13 hr, this scenario comes in 6.15% below the baseline at 12.2 hr.
  • It computes required leak test workload in hours by dividing the assembly count by the test rate, then inflating for an evacuation, stabilization and retest allowance. 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

  • Required leak test workload: 12.2 hr (headline result)
  • Base leak test workload: 10 hr
  • Evacuation, stabilization, and retest allowance: 22 %
  • Leak tests completed per hour: 6 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Leak Test Workload calculator, set evacuation, stabilization, and retest allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.