Tube, Pipe & Profile Forming worked example

Leak Test Capacity at 65% leak-test station uptime: a worked example in tube, pipe & profile forming

Suppose leak-test station uptime falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Leak test capacity tells you how many good, pressure-verified tube or pipe assemblies a leak-test station can deliver over a period once downtime and reject rates are accounted for.

The inputs for this scenario

  • Tubes leak-tested per cycle: 4 units / cycle (held at the documented default)
  • Available leak-test cycles: 480 cycles (held at the documented default)
  • Leak-test station uptime: 65 % (the input this scenario stresses; the baseline uses 90)
  • First-pass leak-test yield: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross leak test capacity capacity = units per cycle × available cycles.
  • Good output capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross capacity works out to 1,920 units at these inputs.
  • Uptime loss works out to 672 units at these inputs.
  • Yield loss works out to 37.44 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where leak-test station uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • It computes good output capacity as units per cycle times available cycles times uptime times yield, and breaks out the units lost to uptime and to yield separately. 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

  • Good output capacity: 1,211 units (headline result)
  • Gross capacity: 1,920 units
  • Uptime loss: 672 units
  • Yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Leak Test Capacity calculator, set leak-test station uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.