CFI Sprinkler System Requirements 2 — Questions and Answers
Question 1: What is the maximum distance allowed between sprinkler heads in a light hazard occupancy under NFPA 13?
- 12 feet
- 15 feet (Correct answer)
- 20 feet
- 25 feet
Correct answer: 15 feet
NFPA 13 allows a maximum of 15 feet between sprinkler heads in light hazard occupancies.
Question 2: Which type of sprinkler system uses air pressure to hold water back from the piping until a head activates?
- Wet pipe system
- Dry pipe system (Correct answer)
- Deluge system
- Pre-action system
Correct answer: Dry pipe system
A dry pipe system uses pressurized air or nitrogen to keep the valve closed until a sprinkler opens, allowing water to flow.
Question 3: According to NFPA 13, what minimum clearance must be maintained between the top of storage and sprinkler deflectors?
- 12 inches
- 18 inches (Correct answer)
- 24 inches
- 36 inches
Correct answer: 18 inches
NFPA 13 requires at least 18 inches of clearance between the top of storage and sprinkler deflectors to ensure proper water distribution.
Question 4: A sprinkler system inspector tag is required to be posted at which location?
- At each sprinkler head
- At the main riser or control valve (Correct answer)
- At the fire department connection
- At the building entrance
Correct answer: At the main riser or control valve
NFPA 25 requires inspection tags to be posted at the main riser or control valve where they are easily visible.
Question 5: What is the purpose of a fire department connection (FDC) on a sprinkler system?
- To drain the system after a fire
- To supplement the water supply from a fire truck (Correct answer)
- To test system pressure remotely
- To monitor water flow automatically
Correct answer: To supplement the water supply from a fire truck
The FDC allows fire department pumpers to augment the water supply feeding the sprinkler system during a fire.
Question 6: Under NFPA 25, how often must gauges on a wet pipe sprinkler system be inspected?
- Daily
- Weekly
- Monthly (Correct answer)
- Quarterly
Correct answer: Monthly
NFPA 25 requires gauges on wet pipe sprinkler systems to be inspected monthly to verify proper system pressure.
Question 7: Which sprinkler head orientation is required when the deflector must be positioned within 1 to 12 inches below the ceiling?
- Upright
- Pendant (Correct answer)
- Sidewall
- Concealed
Correct answer: Pendant
Pendant sprinklers are installed with the deflector 1 to 12 inches below the ceiling to distribute water in a downward spray pattern.
CFI Sprinkler System Requirements 2
What is the maximum distance allowed between sprinkler heads in a light hazard occupancy under NFPA 13?