ERP & MRP Planning worked example

Production Schedule Capacity at 99% expected work-center uptime: a worked example

Push expected work-center uptime up to 99% and the picture changes. This example computes every intermediate figure at that operating point. a production scheduler needs to confirm whether scheduled capacity covers the build plan

The inputs for this scenario

  • Good units per production cycle: 120 units / cycle (unchanged)
  • Scheduled production cycles: 42 cycles (unchanged)
  • Expected work-center uptime: 99 % (raised for this scenario; the documented default is 88)
  • Expected first-pass yield: 96 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross scheduled capacity = good units per cycle × scheduled production cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 4,790 units for good scheduled production capacity, the number this scenario is built around.
  • At this operating point the engine returns 5,040 units for gross scheduled production capacity.
  • At this operating point the engine returns 50.4 units for units lost to planned downtime and availability.
  • At this operating point the engine returns 200 units for units lost to expected scrap or rework.

How this compares with the baseline

  • Against the tool's baseline example, where expected work-center uptime sits at 88% and the headline result is 4,258 units, this scenario comes in 12.5% above the baseline at 4,790 units.
  • It derates gross scheduled capacity by expected uptime and expected first-pass yield to give the good-unit output you can realistically commit. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Good scheduled production capacity: 4,790 units (headline result)
  • Gross scheduled production capacity: 5,040 units
  • Units lost to planned downtime and availability: 50.4 units
  • Units lost to expected scrap or rework: 200 units

Run it with your numbers

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

Last reviewed 2026-05-12.