Cryogenic Storage & LNG Equipment worked example

Cryogenic Commissioning Hours at 12% startup hold, purge, and documentation allowance: a worked example

Push startup hold, purge, and documentation allowance up to 12% and the picture changes. This example computes every intermediate figure at that operating point. Use it when cryogenic commissioning hours in cryogenic storage and lng equipment is changing rate or allowance and you want to see the impact.

The inputs for this scenario

  • Cryogenic commissioning checklist tasks: 120 tasks (unchanged)
  • Crew task completion rate during cooldown: 12 tasks / hr (unchanged)
  • Startup hold, purge, and documentation allowance: 12 % (raised for this scenario; the documented default is 10)

Working through the calculation

  • Applying the documented formula (Base commissioning hours = cryogenic commissioning tasks รท commissioning completion rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 11.2 hr for required commissioning hours, the number this scenario is built around.
  • At this operating point the engine returns 10 hr for base commissioning hours.
  • At this operating point the engine returns 12 % for startup allowance applied.
  • At this operating point the engine returns 12 pieces / min for commissioning completion rate.

How this compares with the baseline

  • Against the tool's baseline example, where startup hold, purge, and documentation allowance sits at 10% and the headline result is 11 hr, this scenario comes in 1.82% above the baseline at 11.2 hr.
  • It computes required commissioning hours by dividing the task count by the crew completion rate, then inflating the result by a startup hold and documentation allowance. 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

  • Required commissioning hours: 11.2 hr (headline result)
  • Base commissioning hours: 10 hr
  • Startup allowance applied: 12 %
  • Commissioning completion rate: 12 pieces / min

Run it with your numbers

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

Last reviewed 2026-05-12.