Everyday Blog

It is an explosive “fire triangle”: the Oxygen, the Ignition Source, and the Fuel. These three elements enclosed in the “fire triangle” are always required, to support the ignition. This article will help you learn about explosion proof enclosures.

An essential volume ratio of the fuel to the oxygen need be limited between the fuel’s explosive usual limits and the ignition source, which will free the required energy, to set fire to the explosive mixture. y removing all these three elements, you will eliminate the possible explosion risk.

The usual way to remove all the ignition sources from the possible dangerous site is to employ an explosion proof enclosure. An enclosure that is certified international as explosion proof for a possible hazard, must quite strong, to withstand all the internal pressure that might build up and could generate an explosion.

An explosion proof enclosure will need to be made properly, to expel all the hot gases resulting after the process in a way that, the arrangement would be cooled below the dangerous ignition temperature, in case there is a dangerous gas in the installation.

These explosive proof enclosures are made up either from some cast aluminum or some heavy cast steel and, to cool all the resultant gases the projected enclosures will need to have some wide flanges that will need to be grounded to a finish and a very good tolerance.

The explosive proof enclosures along with the threaded covers would produce similar effect with the help of the long and narrow path that is through the threads. When the hot gases from the potential inner explosion will go through all these long and narrow tubes, these things will quit all the heat to the actual metal and the pressure is much reduced.

Don’t forget to torque all the cover bolts at the suggested value. Also, don’t forget that the flange surfaces must be protected from the scratches, all the time. Any electrical products need to be used wisely.

The improper torque or the damaged surfaces would allow all the hot resulted gases to get away and even ignite, suppose you are dealing with a highly explosive atmosphere outside the explosive proof enclosure.

These explosion proof enclosures are usually present in every industry sub-domain, and each device would be listed and labeled for the normal application in a particular environment as it is noted in the IEC Standards or in the National Electrical Code.