MESG Values — Maximum Experimental Safe Gap Explained

This article covers MESG Values — Maximum Experimental Safe Gap Explained. MESG is the maximum gap through which a gas can propagate an explosion. This guide explains how MESG determines gas group classification and how it affects Ex d flamepath requirements.

Overview

This topic is covered in depth in EX Academy's training modules and tested in the CompEx written assessment. Understanding this concept is essential for correct equipment selection and inspection in hazardous areas.