What counts as a test cycle?

One full pressurize, hold and inspect sequence for the units the bay holds at once. If a cycle tests four units, enter four units per cycle and count the cycles the schedule gives you.

Why multiply uptime and yield instead of adding?

Yield applies to the units that actually get tested, so it takes a share of the uptime-adjusted count. Cascading the two shares keeps the losses proportional, and the loss rows add back to gross capacity.

Does test pressure or fluid volume enter the capacity?

No. The model counts whole units and cycles. Test pressure, water or gas volume and temperature are not metered, so no standard-to-actual conversion applies.

What closes a capacity gap fastest?

Uptime loss usually offers the larger lever because it applies to the full gross count. Yield loss only affects the units that reach test.

Oil, Gas & Energy Equipment Manufacturing calculator

Hydrotest Capacity Calculator

Turn units per test cycle, available cycles, bay uptime and first-pass yield into the good test capacity the bay can deliver. The gap row shows what the requirement still needs.

What this calculator does

Good hydrotest capacity from units per cycle, cycles, bay uptime and first-pass yield, checked against the units you must test.

Formula used

Gross capacity = units tested per cycle × available test cycles
Good capacity = gross capacity × test bay uptime ÷ 100 × first-pass yield ÷ 100
Uptime loss = gross capacity − gross capacity × uptime ÷ 100
Yield loss = gross capacity × uptime ÷ 100 − good capacity
Capacity gap = max(required test units − good capacity, 0)

Inputs explained

Units Tested per Cycle: Units the bay holds in one test cycle.
Available Test Cycles: Test cycles the bay can run in the period.
Test Bay Uptime: Share of scheduled cycles the bay is available.
First-Pass Test Yield: Share of tested units that pass without retest.
Required Test Units: Units the schedule needs from the bay.

How to use the result

Best suited to checking a test bay against demand, sizing cycles for a turnaround, testing an uptime improvement.
Failures and outages often cluster, so a good average can still miss a shipping week. Test fluid volume and test pressure are not modeled, no gas or liquid volume is metered, and no standard-to-actual condition conversion applies.

Current U.S. benchmarks

Industrial electricity averages 9.77 cents per kWh across the U.S. (EIA, Jul 2026), up 4.7% from a year earlier. Energy-intensive steps carry this directly into unit cost.
Steel mill PPI stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. New factory orders are up 8.5% year over year (Census).

Common questions

What counts as a test cycle? One full pressurize, hold and inspect sequence for the units the bay holds at once. If a cycle tests four units, enter four units per cycle and count the cycles the schedule gives you.
Why multiply uptime and yield instead of adding? Yield applies to the units that actually get tested, so it takes a share of the uptime-adjusted count. Cascading the two shares keeps the losses proportional, and the loss rows add back to gross capacity.
Does test pressure or fluid volume enter the capacity? No. The model counts whole units and cycles. Test pressure, water or gas volume and temperature are not metered, so no standard-to-actual conversion applies.
What closes a capacity gap fastest? Uptime loss usually offers the larger lever because it applies to the full gross count. Yield loss only affects the units that reach test.

Last reviewed 2026-10-01.