Ventilation is an "engineering control" intended to remove or control pollutants released into indoor work environments.
This is one of the preferred methods for controlling the exposure of employees to air pollution. Ventilation can be done by natural methods (eg, window opening) or mechanical systems (eg, fans or blowers) that "fresh" inlet air in and out "contaminated" indoor air. . It is commonly used to remove contaminants such as fumes, dust and fumes in order to create a healthy and safe work environment. Modern industry, with its complex operations and processes, uses an increasing number of compounds and chemicals, many of which are highly toxic.