Cryogenic Storage & LNG Equipment worked example

LNG Transfer Loss with lng transfer loss rate of 6 gal / hr: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop lng transfer loss rate to 6 gal / hr, then walk the calculation through step by step. Estimate LNG transfer loss and cost from loss rate, transfer duration, and LNG cost per gallon or kilogram.

The inputs for this scenario

  • LNG transfer loss rate: 6 gal / hr (the input this scenario stresses; the baseline uses 12)
  • LNG transfer duration: 8 hr (held at the documented default)
  • LNG cost basis: 3.5 $ / gal (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Liquid-equivalent LNG lost = LNG transfer loss rate × transfer duration.
  • LNG transfer loss cost works out to 168 $ at these inputs, and this is the headline figure for the scenario.
  • Liquid-equivalent LNG lost works out to 48 units at these inputs.
  • Transfer duration works out to 8 hr at these inputs.
  • LNG cost basis works out to 3.5 $ / unit at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where lng transfer loss rate sits at 12 gal / hr and the headline result is 336 $, this scenario comes in 50% below the baseline at 168 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to lng transfer loss rate, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a constant hourly loss rate; real boil-off varies with starting temperature, ambient conditions, flow rate, and whether vapor is recovered or vented, so it is an estimate, not a metered measurement.

Results at a glance

  • LNG transfer loss cost: 168 $ (headline result)
  • Liquid-equivalent LNG lost: 48 units
  • Transfer duration: 8 hr
  • LNG cost basis: 3.5 $ / unit

Run it with your numbers

  • To rerun this with your own numbers, open the live LNG Transfer Loss calculator, set lng transfer loss rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.