Once the correcting chemical is introduced into a bypass chemical feeder, what should be done next?

The correct action after introducing the correcting chemical into a bypass chemical feeder is to close the feeder. Closing the feeder after the chemical is introduced ensures that no further chemical is accidentally released into the system, which could potentially lead to over-treatment or an imbalance in the chemical dosing. By sealing the feeder, you also prevent contamination and maintain accurate control over the amount of chemical being used.

Following this, it is important to monitor the system to ensure that the chemical has distributed properly. This may involve confirming that the isolation valves are open if they were closed prior to introducing the chemical, allowing proper flow and mixing. Additionally, techniques such as throttling the flow with the bypass valve or starting the heating system may be part of subsequent steps in the process, but closing the feeder is crucial for initial containment and safety.