When shutting down a system for impairment, where must a tag be hung?

When shutting down a system for impairment, it is crucial to ensure that all relevant parties are aware of the shutdown to prevent misuse and maintain safety. Hanging a tag at the system control valve and the fire department connection provides clear communication about the impairment directly at key points of the system.

The system control valve is integral to the operation of the water-based fire protection system. By tagging it, personnel can see that the valve is in a state of impairment, and this promotes safety when they are managing or assessing the system. Additionally, tagging the fire department connection ensures that first responders are aware that the water supply for firefighting is impaired when they arrive on the scene, allowing them to take appropriate actions.

In contrast, other locations like the main entrance of the facility or the control panel may not convey immediate, relevant information about the status of the system to those who might be interacting with it directly. The nearest fire extinguisher is not related to the water-based system impairment and does not serve to inform about the state of the fire protection system. Therefore, the identification and communication of an impairment should be done right at the critical elements of the system itself, making the choice of hanging a tag at the system control valve and fire department connection the most effective