Chlorine safety series : Post #3 - Refer point#1 in post #1 of the chlorine safety series.
Proper Ventilation System Design
a. Ventilation Type and Capacity
1. Local Exhaust Ventilation (LEV): Use LEV systems to capture chlorine gas at the source, especially near storage and handling areas.
2. General Ventilation: Install an HVAC system that provides adequate air exchange to dilute chlorine concentrations in the event of a minor leak.
3. High-Capacity Exhaust Fans: Use fans with a high air exchange rate, particularly in enclosed areas or areas where chlorine use is intensive.
b. Ventilation Placement and Airflow Direction
1. Exhaust Fan Placement: Position exhaust fans at a low level since chlorine gas settles near the floor.
2. Intake and Exhaust Balance: Ensure that fresh air intakes and exhaust outlets create a steady airflow from clean to contaminated areas, avoiding recirculation of contaminated air.
3. Dedicated Ducting: Use separate ducting for chlorine-contaminated air, ensuring it’s vented directly to the outside away from populated areas and HVAC intakes.
c. Emergency Ventilation and Air Filtration
1. Emergency Ventilation System: In high-risk areas, an emergency ventilation system that automatically activates during chlorine leaks helps quickly dilute the gas.
2. Scrubbers or Absorbers: In cases where chlorine may need to be treated before release, consider using air scrubbers to neutralize chlorine gas before exhausting it to the atmosphere.
d. Monitoring and Maintenance
1. Airflow Monitoring: Regularly check ventilation system airflow to ensure consistent and adequate ventilation.
2. Routine Inspection: Schedule routine maintenance for fans, ducts, and filters to prevent blockages or equipment failure that could compromise the ventilation system’s effectiveness.
