What is a water curtain nozzle used to do?

What is a water curtain nozzle used to do?

• A. Deliver a flatscreen of water that forms a protective sheet on the surface of an exposed building.
• B. Deliver a high-velocity jet for interior attack.
• C. Create a fog bank to displace smoke.
• D. Deliver detergent solution to the fire.

Answer: (C)

A water curtain nozzle creates a fog bank by atomizing water into a fine spray. When this fog is directed across an opening—like a doorway or window—it forms a curtain that displaces smoke from the interior. The light, dense fog cools hot gases and helps push smoke out of the compartment, improving visibility and creating a safer environment for firefighters to operate, ventilate, or search. This isn’t about laying down a protective sheet across an exterior surface, delivering a high-velocity water jet for an interior attack, or applying a detergent solution. Its primary use is smoke management through a curtain of fog, hence the correct choice.

A water curtain nozzle creates a fog bank by atomizing water into a fine spray. When this fog is directed across an opening—like a doorway or window—it forms a curtain that displaces smoke from the interior. The light, dense fog cools hot gases and helps push smoke out of the compartment, improving visibility and creating a safer environment for firefighters to operate, ventilate, or search.

This isn’t about laying down a protective sheet across an exterior surface, delivering a high-velocity water jet for an interior attack, or applying a detergent solution. Its primary use is smoke management through a curtain of fog, hence the correct choice.