Sunday, March 29, 2015

Local Exhaust Ventilation

In many industrial work environments across the world the workers are exposed to harmful dust and chemicals on daily basis. These Particulates that are present in the air can cause harm to the worker and could eventually lead to lifelong illnesses which could have been prevented. Local exhaust Ventilation or LEV is one of the many ways that corporations can help minimize these exposures and keep people safe. An LEV is a type of air purification system that removes toxins from the air around an individual/s to make sure that the air they are breathing safe so that it cannot cause harm to them in the work environment. A local exhaust ventilation system consists of five equally important parts the first part of the system is known as the hood. This piece of the system is responsible for the capture and enclosure of contaminants. It reaches out to capture and pull away contaminates from the workers breathing area. This is the most important part of the LEV system. The second part of the system is the duct system, this is responsible for carrying away the contaminants away from the hood. It is crucial however that the velocity of air is strong enough so nothing settles in the duct. The third part of the system is the fan which is responsible for the movement of air throughout the system, it can be either vane axial shaped or centrifugal.  The fourth part is the motor which is responsible in running the fan the pushes the air through the system. The fifth and final part of the system is the stack or exhaust which removes the contaminated air from the system all together. While working with chemicals and other contaminants can be dangerous a well put together Local exhaust ventilation system can make working with these chemicals much safer so the work may be completed. 

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