General or dilution ventilation is intended to do what?

General or dilution ventilation is intended to do what?

• A. Remove hazard at source
• B. Provide PPE
• C. Dilute the atmosphere to a safe level by exhausting or supplying air
• D. Substituting chemical

Answer: (C)

General or dilution ventilation aims to reduce exposure by diluting contaminants with fresh outdoor air and removing indoor air so the contaminant concentration in the space is lowered to a safer level. It works by increasing air exchanges and mixing contaminant-laden air with clean air, rather than capturing the hazard right at its source. This approach is most effective for widespread, lower-to-moderate concentrations and works best when combined with proper air distribution to avoid stagnant pockets. It is not focused on removing the hazard at the emission point (that would be local exhaust ventilation), nor is it about PPE or substituting chemicals.

General or dilution ventilation aims to reduce exposure by diluting contaminants with fresh outdoor air and removing indoor air so the contaminant concentration in the space is lowered to a safer level. It works by increasing air exchanges and mixing contaminant-laden air with clean air, rather than capturing the hazard right at its source. This approach is most effective for widespread, lower-to-moderate concentrations and works best when combined with proper air distribution to avoid stagnant pockets. It is not focused on removing the hazard at the emission point (that would be local exhaust ventilation), nor is it about PPE or substituting chemicals.