S12 FDNY CITYWIDE SPRINKLER
SYSTEM FINAL EXAM QUESTIONS AND
ANSWERS
1. What is the primary responsibility of a Certificate of Fitness (S-12) holder regarding
sprinkler systems?
A. Designing and installing new sprinkler systems
B. Ensuring the inspection, testing, and maintenance of the system
C. Repairing underground city water mains
D. Calculating hydraulic pressure for architectural plans
Answer: B
Conceptual Explanation: The C of F S-12 holder is responsible for the visual inspection,
testing, and maintenance of the sprinkler system as per NFPA 25 and NYC Fire Code.
2. Which color tag is used to indicate that a sprinkler system is fully out of service?
A. Blue Tag
B. Red Tag
C. Green Tag
,D. Yellow Tag
Answer: B
Conceptual Explanation: A Red Tag signifies that the system is fully out of service and
requires immediate notification to the FDNY and the building owner.
3. How often should the gauges on a wet pipe sprinkler system be inspected?
A. Weekly
B. Monthly
C. Quarterly
D. Annually
Answer: B
Conceptual Explanation: For wet pipe systems, gauges must be inspected monthly to
ensure they are in good condition and providing accurate pressure readings.
4. In a dry pipe system, what is the purpose of the dry pipe valve?
A. To increase the water pressure in the system
B. To prevent water from entering the piping until a sprinkler head activates
C. To drain the system after a fire
D. To filter sediment from the city water supply
Answer: B
, Conceptual Explanation: The dry pipe valve acts as a clapper that holds back water using
air or nitrogen pressure until a sprinkler head opens and the air pressure drops.
5. What is the minimum clearance that must be maintained below all sprinkler heads?
A. 18 inches
B. 12 inches
C. 24 inches
D. 36 inches
Answer: A
Conceptual Explanation: A minimum of 18 inches of clearance must be maintained below
the deflector of a sprinkler head to ensure proper spray distribution.
6. Which device is used to prevent a false alarm caused by pressure surges in the water
supply?
A. Jockey pump
B. OS&Y valve
C. Retard chamber
D. Ball drip
Answer: C
SYSTEM FINAL EXAM QUESTIONS AND
ANSWERS
1. What is the primary responsibility of a Certificate of Fitness (S-12) holder regarding
sprinkler systems?
A. Designing and installing new sprinkler systems
B. Ensuring the inspection, testing, and maintenance of the system
C. Repairing underground city water mains
D. Calculating hydraulic pressure for architectural plans
Answer: B
Conceptual Explanation: The C of F S-12 holder is responsible for the visual inspection,
testing, and maintenance of the sprinkler system as per NFPA 25 and NYC Fire Code.
2. Which color tag is used to indicate that a sprinkler system is fully out of service?
A. Blue Tag
B. Red Tag
C. Green Tag
,D. Yellow Tag
Answer: B
Conceptual Explanation: A Red Tag signifies that the system is fully out of service and
requires immediate notification to the FDNY and the building owner.
3. How often should the gauges on a wet pipe sprinkler system be inspected?
A. Weekly
B. Monthly
C. Quarterly
D. Annually
Answer: B
Conceptual Explanation: For wet pipe systems, gauges must be inspected monthly to
ensure they are in good condition and providing accurate pressure readings.
4. In a dry pipe system, what is the purpose of the dry pipe valve?
A. To increase the water pressure in the system
B. To prevent water from entering the piping until a sprinkler head activates
C. To drain the system after a fire
D. To filter sediment from the city water supply
Answer: B
, Conceptual Explanation: The dry pipe valve acts as a clapper that holds back water using
air or nitrogen pressure until a sprinkler head opens and the air pressure drops.
5. What is the minimum clearance that must be maintained below all sprinkler heads?
A. 18 inches
B. 12 inches
C. 24 inches
D. 36 inches
Answer: A
Conceptual Explanation: A minimum of 18 inches of clearance must be maintained below
the deflector of a sprinkler head to ensure proper spray distribution.
6. Which device is used to prevent a false alarm caused by pressure surges in the water
supply?
A. Jockey pump
B. OS&Y valve
C. Retard chamber
D. Ball drip
Answer: C
