Warning and instruction signs for protected areas should be provided where?

• A. Not required
• B. At entrances to and inside protected areas
• C. Inside the protected area only
• D. At entrances to the building only

Answer: (B)

Warning and instruction signs for spaces protected by a clean agent must be visible both as you approach and once you are inside. Placing signs at entrances to the protected area alerts anyone approaching that the space is protected and may present hazards or require specific precautions during discharge. Placing signs inside the protected area communicates the hazard to occupants who are already inside and guides them on what to do, such as evacuating or following procedures, and informs responders about the space’s status. This dual placement is essential to prevent unwarranted entry during discharge and to ensure proper awareness and safety procedures are followed. The other options miss either the warning before entry or the interior guidance, so they don’t provide complete protection.