Different industries have various types of operational and production procedures that are hazardous in nature. These procedures can easily cause accidents in the surrounding area, if proper safety and precautionary measures are not taken in advance. One of the devices that are used for the protection of the workers and machines in these industries are explosion proof enclosures. These enclosures help protect different electrical connections in the area.
Before knowing the different types of explosion proof enclosures, it is crucial to know the cause of explosions in different industries.
Possible Causes of Explosions in Industries
- The presence of flammable substances
There are different types of flammable substances that are available in every industry. Ranging from flammable liquids, vapors, gases to solids, these materials are present in every plant and factory. Industries dealing with hydrocarbons, lighter fluids, fibers, dust, and hydrogen are more prone to different types of fire accidents than others.
- Presence of oxygen in the air
Oxygen is one of the biggest culprits in fire caused accidents. It is a known fact in different fire fighting measures that you need to cut the supply of oxygen first to ensure the elimination of fire. However, the ratio between the combustible material and oxygen present in the air needs to be accurate for the explosion to spread in the surrounding area.
- The ignition source
There are some basic ignition sources that are available in almost all industries. Static electricity, hot surfaces of electrical equipment and machines, hot gases, open flames, lightning and intense electromagnetic surfaces and radiation are some of the basic ignition sources present in various industrial sites.
Classification of Explosion Proof Enclosures
To understand the function of different explosion proof enclosures, it is vital to understand the conditions prevalent in different industries. The explosion proof enclosures as per their function are as follows:
- High pressurized and purged
This type of operating condition is generally prevalent in different types of oil and gas industries. These industries generally require explosion proof enclosures that ensure that the pressurized and ignitable environment does not come in contact with the electrically energized parts of the apparatus. The operational equipment in these industries is subject to pressure that is relatively higher than the normal; therefore, any contact with the surrounding air will ignite the equipment. This can only be prevented by using different types of explosion proof enclosures like control boxes, motors and analyzers.
- Flameproof and fire proof
Industries like steel plants and mines are the best examples of these operating conditions. Normally, the safety procedures followed in these industries are optimum in nature as a little slip in precaution can cause dangerous accidents. The electrical equipment that are generally installed in these industries need to have the capacity to bear the explosion that happens during the production or processing operations. Apart from this, the explosion proof enclosures should also have the ability to control the explosion within so that it does not spread to the other surrounding areas. The best examples of explosion proof enclosures that are used in these conditions are junction boxes and different types of motor controlling units.
- Water and oil proof
Effluent and waste water plants generally comprise of operational conditions that can involve submerging different electrical connections underwater. Apart from this, oil refineries may also need electrical fixtures that need to be submerged in oil. These are extremely hazardous as the flow of current will be present in the liquids, if not enclosed in proper explosion proof material. Therefore, different junction boxes, circuit breakers, and motors are generally enclosed in different explosion proof enclosures that are specially made with water and oil proof coatings. These products prevent explosive sparks and short circuits in different oil and water processing units and plants.
It is always better to know the different conditions that propel various types of explosions at industrial sites. This will help you decide on the right type of explosion proof enclosure for your electrical connections.
Jeson Pitt loves to marry his marketing and blogging skills. He works for D&F Liquidators; Hayward, CA based electrical liquidators. Working for the bulk buyers of Electrical Materials, Jeson loves to channelize his thoughts into words, which has helped him establish his image as a blogger. He’s got the industry insights that you can count on.