Which is not a basic type of sprinkler system?

Which is not a basic type of sprinkler system?

• A. Foam-Logic
• B. Wet-Pipe
• C. Dry-Pipe
• D. Deluge

Answer: (A)

The main idea is distinguishing sprinkler system types by how water is delivered. Wet-pipe, dry-pipe, and deluge are standard, basic delivery methods: wet-pipe pipes are filled with water and release immediately when a head is activated; dry-pipe pipes are filled with pressurized air or nitrogen and water is released into the system through a control valve; deluge systems keep all sprinklers open so water flows from every head once the system is activated. Foam-Logic, however, is a specialized foam‑proportioning approach used for certain high-hazard fuels that mixes foam concentrate with the water to blanket the fire, requiring additional equipment and controls. Because it’s a specialized option rather than one of the fundamental water-delivery categories, it isn’t considered a basic sprinkler system type.

The main idea is distinguishing sprinkler system types by how water is delivered. Wet-pipe, dry-pipe, and deluge are standard, basic delivery methods: wet-pipe pipes are filled with water and release immediately when a head is activated; dry-pipe pipes are filled with pressurized air or nitrogen and water is released into the system through a control valve; deluge systems keep all sprinklers open so water flows from every head once the system is activated. Foam-Logic, however, is a specialized foam‑proportioning approach used for certain high-hazard fuels that mixes foam concentrate with the water to blanket the fire, requiring additional equipment and controls. Because it’s a specialized option rather than one of the fundamental water-delivery categories, it isn’t considered a basic sprinkler system type.