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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