Coal Methane - Ventilation Rate

Hold-ventilation rate required to keep methane below 20 % LEL during coal voyage - fresh-air make-up calculation.

CoalMethaneVentilation

Hold volumem³CH₄ generation ratem³/h

Required ventilation: 500m³/h

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\dot V_{vent} = \dot V_{CH_4} / (0.20 \cdot LEL)

Symbol	Meaning	Unit
$LEL$	Lower explosive limit (5 % for methane)
$\dot V$	Ventilation flow rate	m³/h

Source: IMSBC Coal Schedule

In short

Hold-ventilation rate required to keep methane below 20 % LEL during coal voyage - fresh-air make-up calculation.

Learn the theory Draught Survey for Bulk Cargo: Full Method