S12 FDNY Exam (Latest 2025/ 2026 Update)
Questions and Verified Answers| 100%
Correct| Grade A
RTI of a standard sprinkler - ANSWER-80
Sprinkler system with open heads - ANSWER-Deluge system
Freezing point of antifreeze solutions - ANSWER-Hydrometer or refractometer
Color required for sprinkler and standpipe risers per local law 58/2009 - ANSWER-
Yellow
Distance for hanger assembly to center line of an upright sprinkler head -
ANSWER-3 inches
Location of the automatic ball drip - ANSWER-Between lower check valve and fire
department connection
Purpose of a ball drip - ANSWER-To prevent freezing in the line
Build up of foreign matter on a sprinkler head - ANSWER-Loading
, When a sprinkler head opens - ANSWER-It is said to be fused
Minimum air pressure inside a pressure tank - ANSWER-75 psi
Height a gravity tank should be above highest sprinkler heads it supplies -
ANSWER-25 feet
Frequency for replacing gauges - ANSWER-Every 5 years
Number of spare sprinkler heads required when under 300 sprinklers - ANSWER-6
Number of spare sprinkler heads required when there are 300 to 1000 sprinklers -
ANSWER-12
Number of spare sprinkler heads required when there are over 1000 sprinklers -
ANSWER-24
Year all sprinklers prior to which shall be replaced - ANSWER-1920
GPM at which house pumps fill the gravity tank - ANSWER-65 gpm
Spray pattern of a sprinkler 3 feet below the sprinkler head deflector - ANSWER-
16 feet at 15 gpm
Questions and Verified Answers| 100%
Correct| Grade A
RTI of a standard sprinkler - ANSWER-80
Sprinkler system with open heads - ANSWER-Deluge system
Freezing point of antifreeze solutions - ANSWER-Hydrometer or refractometer
Color required for sprinkler and standpipe risers per local law 58/2009 - ANSWER-
Yellow
Distance for hanger assembly to center line of an upright sprinkler head -
ANSWER-3 inches
Location of the automatic ball drip - ANSWER-Between lower check valve and fire
department connection
Purpose of a ball drip - ANSWER-To prevent freezing in the line
Build up of foreign matter on a sprinkler head - ANSWER-Loading
, When a sprinkler head opens - ANSWER-It is said to be fused
Minimum air pressure inside a pressure tank - ANSWER-75 psi
Height a gravity tank should be above highest sprinkler heads it supplies -
ANSWER-25 feet
Frequency for replacing gauges - ANSWER-Every 5 years
Number of spare sprinkler heads required when under 300 sprinklers - ANSWER-6
Number of spare sprinkler heads required when there are 300 to 1000 sprinklers -
ANSWER-12
Number of spare sprinkler heads required when there are over 1000 sprinklers -
ANSWER-24
Year all sprinklers prior to which shall be replaced - ANSWER-1920
GPM at which house pumps fill the gravity tank - ANSWER-65 gpm
Spray pattern of a sprinkler 3 feet below the sprinkler head deflector - ANSWER-
16 feet at 15 gpm
