Flame Arrester - Gap Size

Flame arrester quench-gap size vs maximum experimental safe gap (MESG) - prevents flash-back from ignited vapours.

Flame arresterGas velocityCargo

Cargo vapor group

MESG: 0.92mm

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

gap \leq MESG

Symbol	Meaning	Unit
$MESG$	Maximum Experimental Safe Gap	mm

Source: IMO MSC/Circ.677

In short

Flame arrester quench-gap size vs maximum experimental safe gap (MESG) - prevents flash-back from ignited vapours.

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