Industrial Gases & Cryogenic Systems worked example
Cylinder Fill Cycle Time at 17% purge, leak check, and handling allowance: a worked example
Push purge, leak check, and handling allowance up to 17% and the picture changes. This example computes every intermediate figure at that operating point. Use it when scheduling nitrogen, oxygen, argon, helium, hydrogen, CO2, or mixed gas cylinder fills on a manifold or fill rack.
The inputs for this scenario
- Cylinders to fill: 120 cylinders (unchanged)
- Measured fill rack rate: 6 cylinders / min (unchanged)
- Purge, leak check, and handling allowance: 17 % (raised for this scenario; the documented default is 15)
Working through the calculation
- Applying the documented formula (Base cylinder fill time = cylinders to fill รท measured fill rack rate) to the inputs above produces each figure below.
- At this operating point the engine returns 23.4 min for required cylinder fill cycle time, the number this scenario is built around.
- At this operating point the engine returns 20 min for base cylinder fill time.
- At this operating point the engine returns 17 % for purge, leak check, and handling allowance.
- At this operating point the engine returns 6 pieces / min for measured fill rack rate.
How this compares with the baseline
- Against the tool's baseline example, where purge, leak check, and handling allowance sits at 15% and the headline result is 23 min, this scenario comes in 1.74% above the baseline at 23.4 min.
- It computes required cylinder fill cycle time by dividing the batch size by the measured fill rate, then scaling up by a purge, leak-check, and handling 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 cylinder fill cycle time: 23.4 min (headline result)
- Base cylinder fill time: 20 min
- Purge, leak check, and handling allowance: 17 %
- Measured fill rack rate: 6 pieces / min
Run it with your numbers
- Every input above is editable in the live Cylinder Fill Cycle Time calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.