FDNY S-12 Supervision of Sprinkler Systems –
PRACTICE QUESTIONS WITH CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|INSTANT DOWNLOAD PDF
1. What is the primary purpose of a sprinkler system?
A. Detect smoke
B. Suppress or control fires
C. Alert occupants
D. Ventilate heat
Correct Answer: B
Sprinkler systems are designed to control or suppress fires until
firefighters arrive.
2. Who is responsible for supervising a sprinkler system under
FDNY S-12?
A. Any building occupant
B. Licensed electrician
C. Certificate of Fitness holder
D. Fire Department only
Correct Answer: C
FDNY requires a certified S-12 holder to supervise sprinkler
systems.
3. What should be done if a sprinkler valve is found closed?
A. Ignore it
B. Paint it red
C. Immediately open it and notify FDNY/building management
,D. Replace the valve
Correct Answer: C
Closed valves impair fire protection and must be corrected
immediately.
4. Sprinkler heads should be kept at least how far from
storage?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
Correct Answer: C
FDNY and NFPA require 18 inches of clearance below sprinkler
heads.
5. What does an alarm gong indicate?
A. Low water pressure
B. Fire alarm system trouble
C. Water flow through the sprinkler system
D. Electrical failure
Correct Answer: C
The alarm gong sounds when water flows due to sprinkler
activation.
6. Which type of sprinkler system contains water in the pipes
at all times?
A. Dry pipe
B. Deluge
,C. Pre-action
D. Wet pipe
Correct Answer: D
Wet pipe systems keep water in the piping ready for immediate
discharge.
7. A dry pipe system is mainly used in areas where:
A. Fire risk is low
B. Water freezing is possible
C. Electrical hazards exist
D. Occupancy is high
Correct Answer: B
Dry pipe systems prevent freezing by keeping water out until
activation.
8. What document must be available at the sprinkler control
valve?
A. Building lease
B. Sprinkler system diagram
C. Fire insurance policy
D. Electrical permit
Correct Answer: B
FDNY requires a diagram showing the sprinkler system layout.
9. How often should sprinkler control valves be visually
inspected?
A. Daily
B. Weekly
C. Monthly
, D. Annually
Correct Answer: B
Weekly inspections ensure valves remain open and supervised.
10. What color is typically used for sprinkler control valve
handles?
A. Blue
B. Yellow
C. Red
D. Green
Correct Answer: C
Red indicates fire protection equipment and emergency use.
11. What is the function of a fire department connection
(FDC)?
A. Supply power
B. Drain water
C. Allow FDNY to pump water into the system
D. Activate alarms
Correct Answer: C
The FDC allows firefighters to supplement water supply.
12. What should be done if a sprinkler head is damaged?
A. Paint it
B. Cover it
C. Replace it with an approved head
D. Bend it back
Correct Answer: C
PRACTICE QUESTIONS WITH CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|INSTANT DOWNLOAD PDF
1. What is the primary purpose of a sprinkler system?
A. Detect smoke
B. Suppress or control fires
C. Alert occupants
D. Ventilate heat
Correct Answer: B
Sprinkler systems are designed to control or suppress fires until
firefighters arrive.
2. Who is responsible for supervising a sprinkler system under
FDNY S-12?
A. Any building occupant
B. Licensed electrician
C. Certificate of Fitness holder
D. Fire Department only
Correct Answer: C
FDNY requires a certified S-12 holder to supervise sprinkler
systems.
3. What should be done if a sprinkler valve is found closed?
A. Ignore it
B. Paint it red
C. Immediately open it and notify FDNY/building management
,D. Replace the valve
Correct Answer: C
Closed valves impair fire protection and must be corrected
immediately.
4. Sprinkler heads should be kept at least how far from
storage?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
Correct Answer: C
FDNY and NFPA require 18 inches of clearance below sprinkler
heads.
5. What does an alarm gong indicate?
A. Low water pressure
B. Fire alarm system trouble
C. Water flow through the sprinkler system
D. Electrical failure
Correct Answer: C
The alarm gong sounds when water flows due to sprinkler
activation.
6. Which type of sprinkler system contains water in the pipes
at all times?
A. Dry pipe
B. Deluge
,C. Pre-action
D. Wet pipe
Correct Answer: D
Wet pipe systems keep water in the piping ready for immediate
discharge.
7. A dry pipe system is mainly used in areas where:
A. Fire risk is low
B. Water freezing is possible
C. Electrical hazards exist
D. Occupancy is high
Correct Answer: B
Dry pipe systems prevent freezing by keeping water out until
activation.
8. What document must be available at the sprinkler control
valve?
A. Building lease
B. Sprinkler system diagram
C. Fire insurance policy
D. Electrical permit
Correct Answer: B
FDNY requires a diagram showing the sprinkler system layout.
9. How often should sprinkler control valves be visually
inspected?
A. Daily
B. Weekly
C. Monthly
, D. Annually
Correct Answer: B
Weekly inspections ensure valves remain open and supervised.
10. What color is typically used for sprinkler control valve
handles?
A. Blue
B. Yellow
C. Red
D. Green
Correct Answer: C
Red indicates fire protection equipment and emergency use.
11. What is the function of a fire department connection
(FDC)?
A. Supply power
B. Drain water
C. Allow FDNY to pump water into the system
D. Activate alarms
Correct Answer: C
The FDC allows firefighters to supplement water supply.
12. What should be done if a sprinkler head is damaged?
A. Paint it
B. Cover it
C. Replace it with an approved head
D. Bend it back
Correct Answer: C
