Ammunition Components & Ballistics Manufacturing worked example

Safety and Quality Inspection Workload Cost with inspectors and gauges working in parallel of 2 labor-equivalent units/hr: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop inspectors and gauges working in parallel to 2 labor-equivalent units/hr, then walk the calculation through step by step. Estimate inspection workload cost from inspection station load or labor-equivalent rate, inspection time, cost rate, and inspected units.

The inputs for this scenario

  • Inspectors and gauges working in parallel: 2 labor-equivalent units/hr (the input this scenario stresses; the baseline uses 4)
  • Inspection station runtime per lot: 36 hr (held at the documented default)
  • Loaded inspection labor and gauge rate: 38 $ / workload unit (held at the documented default)
  • Primers, cases, or loaded rounds inspected: 12,000 units (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Inspection workload units = inspection workload rate × inspection runtime.
  • Total inspection workload cost works out to 2,736 $ at these inputs, and this is the headline figure for the scenario.
  • Inspection workload units works out to 72 workload units at these inputs.
  • Inspection cost per unit works out to 0.23 $ / unit at these inputs.
  • Inspection workload cost per hour works out to 76 $ / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where inspectors and gauges working in parallel sits at 4 labor-equivalent units/hr and the headline result is 5,472 $, this scenario comes in 50% below the baseline at 2,736 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to inspectors and gauges working in parallel, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes inspection workload scales linearly with runtime and ignores rejects, re-inspection loops, and scrap — a lot with high defect rates will cost more per accepted unit than this figure suggests.

Results at a glance

  • Total inspection workload cost: 2,736 $ (headline result)
  • Inspection workload units: 72 workload units
  • Inspection cost per unit: 0.23 $ / unit
  • Inspection workload cost per hour: 76 $ / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Safety and Quality Inspection Workload Cost calculator, set inspectors and gauges working in parallel to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.