How you can detect and small leak of gasesous chlorine in and around a chlorinator?

To detect a small leak of gaseous chlorine, you can use a chlorine gas detector, which will alert you to any presence of chlorine gas in the air. Additionally, you can look for physical signs such as a greenish-yellow cloud or a distinct chlorine odor. It is important to act quickly if you suspect a leak, as chlorine gas can be harmful in high concentrations.