Fire Suppression Systems Flashcards
7 cards from real FLSD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Fire Suppression Systems flashcards as text
What type of sprinkler system maintains water in the pipes at all times, ready for immediate discharge?
Answer: Wet pipe system
A wet pipe sprinkler system keeps water under pressure in the pipes at all times, allowing immediate discharge the moment a sprinkler head fuses.
In a dry pipe sprinkler system, what substance fills the pipes in place of water?
Answer: Pressurized air or nitrogen
Dry pipe systems use pressurized air or nitrogen to hold a clapper valve closed, keeping water out of the pipes until a sprinkler head opens.
A Class I standpipe system provides hose connections intended for use by which group?
Answer: Fire department personnel
Class I standpipe systems provide 2.5-inch hose connections designed exclusively for use by trained fire department personnel.
Which NFPA standard governs the installation of automatic sprinkler systems in commercial buildings?
Answer: NFPA 13
NFPA 13 is the Standard for the Installation of Sprinkler Systems and sets requirements for design, installation, and materials.
What is the primary purpose of a fire department connection (FDC) on a building's exterior?
Answer: To allow FDNY to supplement the building's water supply to the system
The FDC allows fire department apparatus to pump additional water into the sprinkler or standpipe system, supplementing the building's own water supply during a fire.
A pre-action sprinkler system requires which two events before water is discharged?
Answer: A detection device activation AND a sprinkler head fusing open
Pre-action systems require both a detection device (smoke or heat) to open a control valve AND a sprinkler head to thermally fuse before water flows, providing dual protection against accidental discharge.
Which type of sprinkler head responds most rapidly due to its smaller thermal sensing element?
Answer: Quick response
Quick response sprinkler heads have a smaller glass bulb or fusible link that activates faster than standard response heads, improving early fire suppression and life safety.