Your chlorinator room should have an exhaust vent installed

• A. Near the ceiling
• B. Near the floor
• C. Halfway up the wall
• D. At the chlorinator bell jar

Answer: (B)

Chlorine gas is heavier than air, so if released it tends to settle toward the floor. Placing the exhaust vent near floor level pulls gas out at the source, reducing the chance of it pooling in the lower part of the room and improving worker safety. A vent near the ceiling would miss much of the gas that settles low, and a vent halfway up the wall would still fail to capture the heavier-than-air chlorine as effectively. Venting at the floor keeps the room safer and helps maintain proper air movement away from occupied areas.