What is the primary purpose of ventilation in hazardous areas?

• A. To heat the workspace
• B. To humidify the room
• C. To dilute and remove airborne contaminants, protecting workers from exposure and improving air quality.
• D. To power ventilation equipment

Answer: (C)

Ventilation in hazardous areas is about protecting workers by diluting and removing airborne contaminants, which lowers the concentration of toxic substances in the breathing zone and helps keep exposures within safe limits. By supplying fresh air and exhausting contaminated air, the overall air quality improves and health risks reduce. Local exhaust ventilation can capture emissions at the source, while general ventilation reduces contaminant buildup throughout the space. Heating, humidifying, or powering equipment aren’t the primary safety goals, though they may be incidental results. The key idea is reducing inhalation risk by diluting and removing contaminants.