Basic Wastewater Operator Practice Exam

From where should the exhaust from a chlorinator room be vented?

1. At the door

2. At the ceiling

3. At floor level

4. In the window

The correct answer is: At floor level

The exhaust from a chlorinator room should ideally be vented at floor level because chlorine gas is heavier than air and can accumulate at lower levels. By venting at the floor, it allows the chlorine gas to escape before it can build up to dangerous concentrations, ensuring the safety of personnel in and around the chlorinator room. Proper ventilation at this level is vital to maintain air quality and reduce the risk of exposure to harmful gases. Venting at the door, ceiling, or window would not be effective in the same way as floor-level venting. These options could potentially allow chlorine gas to linger in the room or escape in inappropriate ways, posing health risks.