Hospital Equipment & Clinical Furniture worked example

Field Service Buffer with average daily service-parts consumption of 20 units / day: a worked example in hospital equipment & clinical furniture

What does the result look like when average daily service-parts consumption reaches 20 units / day? The full calculation is worked below with real intermediate numbers. Use it when sizing the regional field service van stock or depot parts buffer for hospital bed and clinical equipment service technicians.

The inputs for this scenario

  • Average daily service-parts consumption: 20 units / day (raised for this scenario; the documented default is 8)
  • Supplier replenishment lead time: 21 days (unchanged)
  • Safety stock buffer: 40 units (unchanged)

Working through the calculation

  • Applying the documented formula (Cycle stock = average daily consumption × supplier lead time) to the inputs above produces each figure below.
  • At this operating point the engine returns 0.02 days for protected days of supply, the number this scenario is built around.
  • At this operating point the engine returns 0.95 days for unprotected days.
  • At this operating point the engine returns 20 pieces for inventory.
  • At this operating point the engine returns 21 pieces / day for daily usage.

How this compares with the baseline

  • Against the tool's baseline example, where average daily service-parts consumption sits at 8 units / day and the headline result is 0.01 days, this scenario comes in 150% above the baseline at 0.02 days.
  • A figure at this level is achievable when average daily service-parts consumption is genuinely sustained, not just peaked for a shift. It uses average daily consumption, so spiky or seasonal failure patterns can stock out even when the average is covered; size safety stock from demand variability, not a flat guess.

Results at a glance

  • Protected days of supply: 0.02 days (headline result)
  • Unprotected days: 0.95 days
  • Inventory: 20 pieces
  • Daily usage: 21 pieces / day

Run it with your numbers

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

Last reviewed 2026-05-12.