Industrial ventilation systems are often used to control the buildup of hazardous concentrations of industrial chemicals in the air. When do such airborne chemical contaminants come from
- directly from process equipment
- mobile equipment
- employee activities
- win in poor housekeeping in the fugitive emissions from industrial process control equipment are some other sources. As you can imagine we must identify emission sources before we can effectively control them. Intensively study of the source is often required before controls are installed. The hazardous of the emission sources can be controlled by many methods.
One good way is to substitute a less toxic material for example using hot soapy water in place solvents for cleaning. Another is to provide a change in the process for example using paint dipping instead of paint spraying yet another approach is to enclose the source or provide a barrier between the source in the employee. Sometimes worker educations and exposure. Approved respirators may be used as a control method in some situations. But usually the most reliable approach to reduce employee exposure is through the use of engineering and administrative controls. Ventilation controls is one such engineering method