Port, Crane & Terminal Equipment worked example

Field Commissioning Cost at 86% on-site productive time: a worked example in port, crane & terminal equipment

Push on-site productive time up to 86% and the picture changes. This example computes every intermediate figure at that operating point. A project engineer budgets the on-site commissioning phase for a quay crane, accounting for weather delays at an exposed berth.

The inputs for this scenario

  • On-site commissioning hours: 320 hr (unchanged)
  • Loaded field technician rate: 145 $/hr (unchanged)
  • On-site productive time: 86 % (raised for this scenario; the documented default is 75)
  • Mobilization and tooling cost: 18,000 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Commissioning cost = field hours x loaded rate x productive time% + mobilization) to the inputs above produces each figure below.
  • At this operating point the engine returns 57,904 $ for total field commissioning cost, the number this scenario is built around.
  • At this operating point the engine returns 181 $ / piece for field commissioning cost per unit.
  • At this operating point the engine returns 39,904 $ for variable field commissioning cost.
  • At this operating point the engine returns 18,000 $ for fixed field commissioning cost adder.

How this compares with the baseline

  • Against the tool's baseline example, where on-site productive time sits at 75% and the headline result is 52,800 $, this scenario comes in 9.67% above the baseline at 57,904 $.
  • It computes total field commissioning cost from productive-adjusted labor plus fixed mobilization, and derives a cost per field hour. 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 field commissioning cost: 57,904 $ (headline result)
  • Field commissioning cost per unit: 181 $ / piece
  • Variable field commissioning cost: 39,904 $
  • Fixed field commissioning cost adder: 18,000 $

Run it with your numbers

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

Last reviewed 2026-05-12.