The industries that are involved in the production
of dangerous chemicals requires Local Exhaust Ventilation
(LEV) for separating employees to hazards. LEV purpose is to
separate contaminants from the source it generated. The
objective of this paper is to look at a number of studies related to
the LEV and its applications. The discussions are divided to
several parts such as application in construction industries,
buildings, manufacturing industries, workshops and paint
manufacturers. Ongoing monitoring, maintenance and effective
personal protective equipment (PPE) are necessary to ensure the
spray booths can be managed properly and avoid employee
exposure to contaminants. Ventilation design in buildings,
equipment selection and use of Computational Fluid Dynamics
(CFD) is highly suggested in that application. There are no
exposures to hazardous materials to the building users in the
construction of hospitals and others. Use of push-pull ventilation
method is an efficient. The future phase of ventilation system in
airplanes and hawker centre will be the consumer's attention
