What should be installed in the chlorinator room to ensure safety?

In a chlorinator room, it is crucial to ensure proper ventilation, and the installation of an exhaust fan plays a vital role in this regard. Chlorinators use chlorine gas, which can be hazardous if accumulated in the atmosphere, as it poses respiratory risks and other health hazards. An exhaust fan helps to mitigate these dangers by continuously removing any potentially harmful gases from the room, thereby allowing for a safer working environment for the personnel.

The other options provide important safety measures but do not directly address the immediate and necessary concern of gas accumulation in this specific context. An emergency exit is crucial in case of a hazardous situation but does not mitigate the risk of chlorine gas exposure. A first aid kit is important for addressing any potential injuries or exposures but does not prevent them. Similarly, while a smoke detector is vital for fire safety, it does not directly relate to the specific risks associated with the storage and use of chlorine gas in a chlorinator room. Thus, the installation of an exhaust fan is the most critical safety feature in this scenario.