Pump, Compressor & Rotating Equipment Assembly worked example

Pressure Test Time at 12% setup and dwell allowance: a worked example

What does the result look like when setup and dwell allowance reaches 12%? The full calculation is worked below with real intermediate numbers. Use it when pressure test time in pump, compressor and rotating equipment assembly needs a defensible run time before a quote goes out.

The inputs for this scenario

  • Units to pressure test: 120 units (unchanged)
  • Test stand throughput rate: 12 units / hr (unchanged)
  • Setup and dwell allowance: 12 % (raised for this scenario; the documented default is 10)

Working through the calculation

  • Applying the documented formula (Base pressure test time time = required work รท processing rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 11.2 psi for adjusted run time, the number this scenario is built around.
  • At this operating point the engine returns 10 psi for base run time.
  • At this operating point the engine returns 12 % for allowance applied.
  • At this operating point the engine returns 12 pieces / min for process rate.

How this compares with the baseline

  • Against the tool's baseline example, where setup and dwell allowance sits at 10% and the headline result is 11 psi, this scenario comes in 1.82% above the baseline at 11.2 psi.
  • A figure at this level is achievable when setup and dwell allowance is genuinely sustained, not just peaked for a shift. It assumes a steady throughput rate; a single unit that fails and needs re-test, or a stand changeover mid-batch, will push actual time past the estimate.

Results at a glance

  • Adjusted run time: 11.2 psi (headline result)
  • Base run time: 10 psi
  • Allowance applied: 12 %
  • Process rate: 12 pieces / min

Run it with your numbers

  • Every input above is editable in the live Pressure Test Time calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.