NPI, DFM/DFA & Engineering Change worked example

Design Review Workload at 9.2% design review workload utilization target: a worked example

Push design review workload utilization target up to 9.2% and the picture changes. This example computes every intermediate figure at that operating point. Use it when design review workload in npi, dfm/dfa and engineering change is being sized against an asset rating.

The inputs for this scenario

  • Design review workload demand: 100 units (unchanged)
  • Design review workload capacity: 1.2 units (unchanged)
  • Design review workload utilization target: 9.2 % (raised for this scenario; the documented default is 8)

Working through the calculation

  • Applying the documented formula (Required design review workload load = design review workload demand รท design review workload utilization target) to the inputs above produces each figure below.
  • At this operating point the engine returns 120 hr for total load, the number this scenario is built around.
  • At this operating point the engine returns 13.04 hr / hr for hourly equivalent.
  • At this operating point the engine returns 100 hr for input load.
  • At this operating point the engine returns 1.2 x for load factor.

How this compares with the baseline

  • Against the tool's baseline example, where design review workload utilization target sits at 8% and the headline result is 120 hr, this scenario lands almost exactly on the baseline at 120 hr.
  • It converts raw review demand into a utilization-adjusted required load, then subtracts available reviewer hours to expose the capacity gap. 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

  • Total load: 120 hr (headline result)
  • Hourly equivalent: 13.04 hr / hr
  • Input load: 100 hr
  • Load factor: 1.2 x

Run it with your numbers

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

Last reviewed 2026-05-12.