Tube, Pipe & Profile Forming calculator

Leak Test Capacity Calculator

Check whether the leak-test station can deliver your required passing assemblies. Enter its full station cycle, available running minutes, simultaneous assembly count and observed first-pass results.

What this calculator does

  • Forecast first-pass passing assemblies from a full leak-test station cycle and observed test results.

Formula used

  • Complete cycles = floor(available minutes × 60 ÷ full cycle seconds)
  • Gross capacity = complete cycles × occupied nests
  • Expected accepted output = gross capacity × observed first-pass good ÷ observed total
  • Expected rejects = gross capacity − expected accepted output
  • Capacity gap = expected accepted output − required output

Inputs explained

  • Assemblies Tested per Cycle: Assemblies tested simultaneously in occupied station nests.
  • Full Leak-Test Station Cycle: Validated load-to-load cycle including filling, stabilization, measurement and dumping.
  • Available Test Running Time: Reserved minutes after setup, stops and planned retest time.
  • Observed First-Pass Tested Assemblies: Assemblies tested on their first attempt in a comparable run.
  • Observed First-Pass Passing Assemblies: Assemblies passing on that first attempt in the same run.
  • Required Passing Assemblies: Passing assemblies needed from this available station window.

How to use the result

  • Best suited to leak booth capacity Planning, retest window planning.
  • Capacity does not establish leak limits, test pressure or an adequate stabilization time.

Current U.S. benchmarks

  • The producer price index for steel mill products stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. Quotes priced off last quarter's material cost miss this move.

Common questions

  • Which time belongs in the test cycle? Use the complete load-to-load station cycle, including filling, stabilization, measurement, dumping and fixture handling.
  • Can I shorten stabilization to increase capacity? No. Enter a cycle validated for the part and leak specification. This capacity estimate does not validate a changed leak-test program.
  • How do I count retests? Use assemblies tested the first time and those passing on that first attempt. Deduct planned retest station time from available minutes.
  • Why can expected passing output be fractional? The measured pass fraction is an average applied to complete station cycles. It forecasts expected output; it does not guarantee an integer shipment quantity.

Last reviewed 2026-10-06.