Fastening, Torque & Joint Assembly worked example

Torque Audit Sample Size at 61% auditor or audit-station availability: a worked example

This worked example runs the torque audit sample size numbers for a tougher week than the baseline: 61% auditor or audit-station availability instead of the typical 85%. Estimate usable torque-audit sample checks from audit points, planned rounds, auditor availability, and valid-check yield.

The inputs for this scenario

  • Torque check points per audit round: 24 checks / round (held at the documented default)
  • Planned torque audit rounds: 6 rounds (held at the documented default)
  • Auditor or audit-station availability: 61 % (the input this scenario stresses; the baseline uses 85)
  • Valid first-pass torque checks: 96 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross torque audit checks = torque check points per round × planned audit rounds.
  • Good output capacity works out to 84.33 units at these inputs, and this is the headline figure for the scenario.
  • Gross planned torque checks works out to 144 units at these inputs.
  • Audit availability loss works out to 56.16 units at these inputs.
  • Retest or invalid-check allowance works out to 3.51 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where auditor or audit-station availability sits at 85% and the headline result is 118 units, this scenario comes in 28.24% below the baseline at 84.33 units.
  • Use it when designing or defending a torque-audit schedule and you need a realistic, not nominal, sample size after real-world losses. 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: 84.33 units (headline result)
  • Gross planned torque checks: 144 units
  • Audit availability loss: 56.16 units
  • Retest or invalid-check allowance: 3.51 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Torque Audit Sample Size calculator, set auditor or audit-station availability to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.