Maximum Experimental Safe Gap (MESG): | AIChE

Maximum Experimental Safe Gap (MESG):

The maximum gap of the joint between the two parts of the interior chamber of a test apparatus which, when the internal gas mixture is ignited and under specified conditions, prevents ignition of the internal gas mixture through a 25- mm-long joint, for all concentrations of the tested gas or vapor in air. The MESG is a property of the respective gas mixture, but can vary depending on the test apparatus.

Go to Process Safety Glossary

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