Wood & Paper Manufacturing worked example

Mill Uptime Availability at 99% expected mill uptime: a worked example

What does the result look like when expected mill uptime reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when mill uptime availability in wood and paper manufacturing is being asked to take on more work and you need to know if there is room.

The inputs for this scenario

  • Sheets Produced per Machine Cycle: 4 units / cycle (unchanged)
  • Scheduled Machine Cycles Available: 480 cycles (unchanged)
  • Expected Mill Uptime: 99 % (raised for this scenario; the documented default is 90)
  • Expected First-Pass Yield: 97 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross mill uptime availability capacity = mill uptime availability output per cycle × available mill uptime availability cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,844 units for good mill uptime availability capacity, the number this scenario is built around.
  • At this operating point the engine returns 1,920 units for gross mill uptime availability capacity.
  • At this operating point the engine returns 19.2 units for mill uptime availability downtime loss.
  • At this operating point the engine returns 57.02 units for mill uptime availability yield loss.

How this compares with the baseline

  • Against the tool's baseline example, where expected mill uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 10% above the baseline at 1,844 units.
  • A figure at this level is achievable when expected mill uptime is genuinely sustained, not just peaked for a shift. It assumes uptime and yield are independent and multiply cleanly; in reality a poorly running machine often loses on both at once, so combined effects can differ from the simple product.

Results at a glance

  • Good mill uptime availability capacity: 1,844 units (headline result)
  • Gross mill uptime availability capacity: 1,920 units
  • Mill uptime availability downtime loss: 19.2 units
  • Mill uptime availability yield loss: 57.02 units

Run it with your numbers

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

Last reviewed 2026-05-12.