PPE & Infection Control Products worked example

Changeover Time at 12% setup, purge, and validation allowance: a worked example in ppe & infection control products

This scenario runs the changeover time calculation on the strong side: 12% setup, purge, and validation allowance, with every other input held at its documented default. Use it when changeover time in ppe and infection control products is changing rate or allowance and you want to see the impact.

The inputs for this scenario

  • Units to process this changeover batch: 120 units (unchanged)
  • Line output rate during changeover run: 12 units / min (unchanged)
  • Setup, purge, and validation allowance: 12 % (raised for this scenario; the documented default is 10)

Working through the calculation

  • Applying the documented formula (Base changeover time = changeover time workload รท changeover time completion rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 11.2 hr for required changeover time, the number this scenario is built around.
  • At this operating point the engine returns 10 hr for base changeover time.
  • At this operating point the engine returns 12 % for changeover time allowance applied.
  • At this operating point the engine returns 12 pieces / min for changeover time completion rate.

How this compares with the baseline

  • Against the tool's baseline example, where setup, purge, and validation allowance sits at 10% and the headline result is 11 hr, this scenario comes in 1.82% above the baseline at 11.2 hr.
  • Use it when sequencing product runs, quoting lot lead times, or building a SMED baseline to target changeover reduction. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Required changeover time: 11.2 hr (headline result)
  • Base changeover time: 10 hr
  • Changeover time allowance applied: 12 %
  • Changeover time completion rate: 12 pieces / min

Run it with your numbers

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

Last reviewed 2026-05-12.