What defines a deluge system?

What defines a deluge system?

• A. All sprinkler heads are closed until activated
• B. Water flows to only the designated heads
• C. Water is pumped manually
• D. All sprinkler heads are open, and water flows to all heads when the system is activated

Answer: (D)

Deluge systems are defined by all sprinkler heads being open and connected to the water supply, so when the system is activated water flows to every head at once. This provides immediate, full-area coverage in high-hazard environments where a fire could spread quickly. The other descriptions don’t fit because they imply that water would only go to some heads, or that water isn’t in the pipes until activation, or that pumping must be done manually. In a deluge, once triggered, water appears at all heads simultaneously.

Deluge systems are defined by all sprinkler heads being open and connected to the water supply, so when the system is activated water flows to every head at once. This provides immediate, full-area coverage in high-hazard environments where a fire could spread quickly. The other descriptions don’t fit because they imply that water would only go to some heads, or that water isn’t in the pipes until activation, or that pumping must be done manually. In a deluge, once triggered, water appears at all heads simultaneously.