Explosives, Pyrotechnics & Energetic Materials Manufacturing worked example

Inspection Hold Time at 40% disposition and system-update allowance: a worked example

What does the result look like when disposition and system-update allowance reaches 40%? The full calculation is worked below with real intermediate numbers. a quality lead needs to estimate hold time before lots can be released or shipped

The inputs for this scenario

  • Lots or records awaiting inspection: 72 items (unchanged)
  • Inspections completed per hour: 9 items / hr (unchanged)
  • Disposition and system-update allowance: 40 % (raised for this scenario; the documented default is 35)

Working through the calculation

  • Applying the documented formula (Base inspection queue hours = lots or records awaiting inspection รท inspections completed per hour) to the inputs above produces each figure below.
  • At this operating point the engine returns 11.2 hr for required inspection hold time, the number this scenario is built around.
  • At this operating point the engine returns 8 hr for base inspection queue hours.
  • At this operating point the engine returns 40 % for disposition and system-update allowance.
  • At this operating point the engine returns 9 items / hr for inspections completed per hour.

How this compares with the baseline

  • Against the tool's baseline example, where disposition and system-update allowance sits at 35% and the headline result is 10.8 hr, this scenario comes in 3.7% above the baseline at 11.2 hr.
  • A figure at this level is achievable when disposition and system-update allowance is genuinely sustained, not just peaked for a shift. It assumes a steady inspection rate and one continuous queue; surge inspections, rejected lots requiring rework, or a stalled disposition signature will push actual hold time well past the estimate.

Results at a glance

  • Required inspection hold time: 11.2 hr (headline result)
  • Base inspection queue hours: 8 hr
  • Disposition and system-update allowance: 40 %
  • Inspections completed per hour: 9 items / hr

Run it with your numbers

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

Last reviewed 2026-05-12.