Explosion-proof Rated Equipment: Usage and Requirements

Explosion-proof equipment is the best option for those who work in Hazardous areas, but do you know how this equipments works? Let’s explore this matter in this post.

When researching for explosion-proof, you might find comparisons with Intrinsically safe equipment. It’s a common question about which safety strategy is the best to apply in hazardous areas. For example, climbers have different plans for their climbs: Different paths in which they have the same goal, but depending on the mountain, one will be better. So before you know which path you’re going to choose, it’s wise to make an assessment.

The EX seal identifies explosion-proof equipment and is a safety strategy adopted for hazardous areas. It is one of the pioneering safety strategies, but its operation still generates curiosity.

What defines equipment as Ex-proof is the enclosure that can resist explosion and prevent damage in your hazardous location. An explosion can create pressure inside an equipment enclosure. This pressure can dissipate more sparkles and cause an even worse accident. To ensure that the equipment is Ex-proof is required to be certified for the proper safety regulations like NEC, NFPA, UL, and others.

This type of equipment is prepared to withstand explosions by gas or steam. So, if the engine generates a spark inside the equipment, its case will be strong enough not to let the explosion dissipate into the external atmosphere. So let’s understand how this design works to ensure that level of safety.

When an internal explosion occurs in the equipment, the gas expelled with pressure seeks a way out of the enclosure. Knowing this, the design of the Ex-proof equipment allows the gas to cool before leaving it outside.

Its reinforced housing helps dissipate gas internally by cooling it and preventing pressure from escaping. World safety standards approve this method. However, this measure is not enough if the material used for the casing doesn’t have good quality. Minor external damage can jeopardize the product certification and cause accidents. See below for some examples of how the enclosure works.