OOS systems must be identified by placing what at fire department connections, system control valves, and fire command center?

Identifying Out of Service (OOS) systems is critical for fire safety and emergency response. The correct choice involves placing tags at fire department connections, system control valves, and the fire command center. Tags serve a specific purpose; they provide clear and immediate information regarding the status of the fire protection system, indicating that it is currently not operational.

Tags are typically designed for durability and are easily recognizable, ensuring that firefighters and emergency responders can quickly assess the situation upon arrival. This quick identification can make a significant difference in their response strategy, as they will be aware that the system may not function during an emergency and can adjust their approach accordingly.

Other methods of identification, while useful in different contexts, do not provide the same level of immediate clarity and standardization found with tags. For instance, stickers are less durable and may not withstand environmental factors over time, banners may not offer the precision required for quick identification, and signs could potentially be more permanent or larger than necessary for the specific task at hand. Hence, using tags is the most effective and widely accepted practice in signaling an OOS status.