Fire Suppression, Sprinkler & Safety System Products worked example

Inspection Sample Size at 61% inspection station uptime: a worked example in fire suppression, sprinkler & safety system products

This worked example runs the inspection sample size numbers for a tougher week than the baseline: 61% inspection station uptime instead of the typical 85%. Estimate accepted inspection sample capacity from samples per inspection cycle, available cycles, inspection uptime, and accepted documentation yield.

The inputs for this scenario

  • Samples inspected per cycle: 10 samples / cycle (held at the documented default)
  • Available inspection cycles: 48 cycles (held at the documented default)
  • Inspection station uptime: 61 % (the input this scenario stresses; the baseline uses 85)
  • Accepted inspection record yield: 98 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross inspection sample size = samples inspected per cycle × available inspection cycles.
  • Good output capacity works out to 287 units at these inputs, and this is the headline figure for the scenario.
  • Gross capacity before uptime and yield works out to 480 units at these inputs.
  • Availability loss works out to 187 units at these inputs.
  • Reject or rework allowance works out to 5.86 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where inspection station uptime sits at 85% and the headline result is 400 units, this scenario comes in 28.24% below the baseline at 287 units.
  • Use it when planning inspection throughput for a fire protection component lot, sizing a QC shift, or checking whether one station can clear incoming volume. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Good output capacity: 287 units (headline result)
  • Gross capacity before uptime and yield: 480 units
  • Availability loss: 187 units
  • Reject or rework allowance: 5.86 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Inspection Sample Size calculator, set inspection station uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.