Heat Treatment, Furnaces & Thermal Processing worked example
Batch Queue Time at 14% queue allowance: a worked example
This worked example runs the batch queue time numbers for a tougher week than the baseline: 14% queue allowance instead of the typical 20%. Estimate batch queue time from queued loads, release rate, and allowance for staging, lab hold, or schedule interruptions.
The inputs for this scenario
- Queued heat treat loads: 14 loads (held at the documented default)
- Load release rate: 2 loads / hr (held at the documented default)
- Queue allowance: 14 % (the input this scenario stresses; the baseline uses 20)
Working through the calculation
- The calculation starts from the formula this tool documents: Base batch queue hours = queued heat treat loads รท load release rate.
- Expected batch queue time works out to 7.98 hr at these inputs, and this is the headline figure for the scenario.
- Base queue hours works out to 7 hr at these inputs.
- Queue allowance applied works out to 14 % at these inputs.
- Load release rate works out to 2 loads / hr at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where queue allowance sits at 20% and the headline result is 8.4 hr, this scenario comes in 5% below the baseline at 7.98 hr.
- Use it when staging is building up, before quoting lead times, or when deciding whether to add a furnace shift to clear a backlog. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.
Results at a glance
- Expected batch queue time: 7.98 hr (headline result)
- Base queue hours: 7 hr
- Queue allowance applied: 14 %
- Load release rate: 2 loads / hr
Run it with your numbers
- To rerun this with your own numbers, open the live Batch Queue Time calculator, set queue allowance to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.