When should a red tag be applied to a fire alarm system?

A red tag should be applied to a fire alarm system after any service, inspection, or test if a system or any part is found to be inoperable. This procedure is critical for safety and regulatory compliance, as it ensures that anyone interacting with the fire alarm system is aware that it is not functioning properly. The red tag serves as a clear visual warning that the system cannot be relied upon in case of an emergency, allowing for appropriate action to be taken to rectify the issue before the system is returned to service.

Applying a red tag under these circumstances is in accordance with safety protocols designed to protect building occupants and emergency responders. This measure is part of maintaining fire safety standards and ensuring that all systems are fully operational when needed. The red tag signifies that further evaluation or repairs are needed before the system can be considered reliable and safe for use.