Fire Protection Systems Flashcards
6 cards from real F89 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Fire Protection Systems flashcards as text
What is the difference between a wet-pipe and dry-pipe sprinkler system?
Answer: Wet-pipe has water constantly in the pipes; dry-pipe has pressurized air until activation
A wet-pipe system has water under pressure in the pipes at all times, while a dry-pipe system has pressurized air that holds water back until a sprinkler head activates.
What is the purpose of a fire pump in a high-rise building's fire protection system?
Answer: To boost water pressure to ensure adequate flow to sprinklers and standpipes at upper floors
Fire pumps boost water pressure to overcome the elevation head in tall buildings, ensuring adequate pressure and flow at upper floors.
What does NFPA 25 govern and why is it important to the FLSD?
Answer: Inspection, testing, and maintenance of water-based fire protection systems
NFPA 25 establishes the standards for inspection, testing, and maintenance of water-based fire protection systems including sprinklers, standpipes, and fire pumps.
What is the function of a standpipe system's pressure reducing valve (PRV)?
Answer: To reduce excessive water pressure at lower floors to safe, usable levels for fire department hose lines
PRVs at lower floor standpipe outlets reduce excessive pressure caused by elevation to safe operating levels for fire department hose streams.
What type of fire alarm system initiating device uses a photoelectric or ionization sensor?
Answer: Smoke detector
Smoke detectors use either photoelectric (light-scattering) or ionization technology to detect smoke particles in the air.
What is the required inspection frequency for sprinkler system control valves according to NFPA 25?
Answer: Weekly
NFPA 25 requires weekly inspection of sprinkler system control valves to verify they are in the open position and properly secured.