FDNY S12 Exam Questions with 100%
Correct Verified Answers Latest updated
version 2025-2026 Grade A+
123. Gravity tanks should be--- correct precise answer --- At least 25
feet above the highest line of sprinkler heads
124. Automatic fill pumps supply water to gravity tanks at a rate of---
correct precise answer --- 65 Gal per minute
125. Booster pumps are used when--- correct precise answer ---
Water pressure at highest sprinkler head does not meet needs of
sprinkler system
126. Temperature of fire pump rooms should be--- correct precise
answer --- Above 40°F at all times
127. Standard wall steel pipe with diameters 1 inch and 1 1/4" should
have hangers placed--- correct precise answer --- At max 12 feet apart
128. All other pipe diameters (except 1" or 1 1/4") should have
hangers--- correct precise answer --- At max 15 feet apart
129. Sway bracing is required to be installed on sprinkler systems in
buildings built--- correct precise answer --- After 1998
130. Freezing point of antifreeze should be tested annually by
measuring specific gravity with a--- correct precise answer ---
Hydrometer or Refractometer
,131. Control valve for the building may also be on the outside wall or
attached to a upright post known as the--- correct precise answer ---
Post indicator valve
132. Lateral braces are spaced--- correct precise answer --- At max
40 feet on center
133. Lateral braces are required on--- correct precise answer --- All
piping 2 1/2" and larger
134. a standard sprinkler has RTI of what?--- correct precise answer
--- 80
135. a sprinkler system with open heads is called a?--- correct precise
answer --- Deluge system
136. local law 58/2009 requires sprinkler and stand pipe risers to be
painted what color?--- correct precise answer --- yellow
137. the distance for the hanger assembly to the center line of an
upright sprinkler head should be?--- correct precise answer --- 3
inches
138. the automatic ball drip is located where?--- correct precise
answer --- Between lower check valve and fire department connection
139. what is the purpose of a ball drip?--- correct precise answer ---
to prevent freezing in the line
140. the build up of foreign matter on a sprinkler head is called?---
correct precise answer --- loading
,141. when a sprinkler head opens it is said to?--- correct precise
answer --- be fused
142. the minimum air pressure inside a pressure tank is?--- correct
precise answer --- 75 psi
143. a gravity tank should be atlas how many feet above the highest
sprinkler heads it supplies?--- correct precise answer --- 25 feet
144. gauges are to be replaced every?--- correct precise answer --- 5
years
145. how many spare sprinkler heads are to be on hand when under
300 sprinklers?--- correct precise answer --- 6
146. how many spare spare sprinkler heads are to be on hand when
there is 300 to 1000 sprinklers?--- correct precise answer --- 12
147. how many spare sprinkler heads are to be on hand when there is
over 1000 sprinklers?--- correct precise answer --- 24
148. Sprinklers listed with nominal k-factors greater than 28 shall
increase the flow by increments when compared with a nominal K-
5.6 sprinkler.--- correct precise answer --- 100%
149. Large drop and ESFR sprinklers shall have a minimum nominal
K-factor of .--- correct precise answer --- 11.2
150. Sprinklers defined as standard response have a thermal element
with an RTI (Response Time Index) of or more.--- correct precise
answer --- 80
, 151. All automatic sprinklers shall have except.--- correct precise
answer --- escutcheon plate col- ored
152. Where maximum ceiling temperatures exceed , sprinklers
with temperature ratings in accordance with the maximum ceiling
tempera- tures of Table 6.2.5.1 shall be used.--- correct precise
answer --- 100 F
153. Sprinklers within of a low-pressure blowoff valve that
discharges free in a large room shall be of the high temperature
classification--- correct precise answer --- 7 ft
154. Sprinklers under glass or plastic skylights exposed to the direct
rays of the sun shall be of the temperature classification.--- correct
precise answer --- intermediate
155. The minimum temperature rating of ceiling sprinklers in general
storage, rack storage, rubber tire storage, roll paper storage, and
baled cotton storage applications shall be .--- correct precise answer
--- 150 degrees
156. If there is a sprinkler head within the 7'0" radius and 2'0" above
a unit heater, what rating shall the sprinkler head be?--- correct
precise answer --- high
157. What is the minimum distance an ordinary rated sprinkler head
has to be above an uncovered steam main?--- correct precise answer -
-- more than 2' Feet 6" Inches
158. An exit stairway designed and constructed so that the movement
of the products of combustion produced by a fire occurring in any part
Correct Verified Answers Latest updated
version 2025-2026 Grade A+
123. Gravity tanks should be--- correct precise answer --- At least 25
feet above the highest line of sprinkler heads
124. Automatic fill pumps supply water to gravity tanks at a rate of---
correct precise answer --- 65 Gal per minute
125. Booster pumps are used when--- correct precise answer ---
Water pressure at highest sprinkler head does not meet needs of
sprinkler system
126. Temperature of fire pump rooms should be--- correct precise
answer --- Above 40°F at all times
127. Standard wall steel pipe with diameters 1 inch and 1 1/4" should
have hangers placed--- correct precise answer --- At max 12 feet apart
128. All other pipe diameters (except 1" or 1 1/4") should have
hangers--- correct precise answer --- At max 15 feet apart
129. Sway bracing is required to be installed on sprinkler systems in
buildings built--- correct precise answer --- After 1998
130. Freezing point of antifreeze should be tested annually by
measuring specific gravity with a--- correct precise answer ---
Hydrometer or Refractometer
,131. Control valve for the building may also be on the outside wall or
attached to a upright post known as the--- correct precise answer ---
Post indicator valve
132. Lateral braces are spaced--- correct precise answer --- At max
40 feet on center
133. Lateral braces are required on--- correct precise answer --- All
piping 2 1/2" and larger
134. a standard sprinkler has RTI of what?--- correct precise answer
--- 80
135. a sprinkler system with open heads is called a?--- correct precise
answer --- Deluge system
136. local law 58/2009 requires sprinkler and stand pipe risers to be
painted what color?--- correct precise answer --- yellow
137. the distance for the hanger assembly to the center line of an
upright sprinkler head should be?--- correct precise answer --- 3
inches
138. the automatic ball drip is located where?--- correct precise
answer --- Between lower check valve and fire department connection
139. what is the purpose of a ball drip?--- correct precise answer ---
to prevent freezing in the line
140. the build up of foreign matter on a sprinkler head is called?---
correct precise answer --- loading
,141. when a sprinkler head opens it is said to?--- correct precise
answer --- be fused
142. the minimum air pressure inside a pressure tank is?--- correct
precise answer --- 75 psi
143. a gravity tank should be atlas how many feet above the highest
sprinkler heads it supplies?--- correct precise answer --- 25 feet
144. gauges are to be replaced every?--- correct precise answer --- 5
years
145. how many spare sprinkler heads are to be on hand when under
300 sprinklers?--- correct precise answer --- 6
146. how many spare spare sprinkler heads are to be on hand when
there is 300 to 1000 sprinklers?--- correct precise answer --- 12
147. how many spare sprinkler heads are to be on hand when there is
over 1000 sprinklers?--- correct precise answer --- 24
148. Sprinklers listed with nominal k-factors greater than 28 shall
increase the flow by increments when compared with a nominal K-
5.6 sprinkler.--- correct precise answer --- 100%
149. Large drop and ESFR sprinklers shall have a minimum nominal
K-factor of .--- correct precise answer --- 11.2
150. Sprinklers defined as standard response have a thermal element
with an RTI (Response Time Index) of or more.--- correct precise
answer --- 80
, 151. All automatic sprinklers shall have except.--- correct precise
answer --- escutcheon plate col- ored
152. Where maximum ceiling temperatures exceed , sprinklers
with temperature ratings in accordance with the maximum ceiling
tempera- tures of Table 6.2.5.1 shall be used.--- correct precise
answer --- 100 F
153. Sprinklers within of a low-pressure blowoff valve that
discharges free in a large room shall be of the high temperature
classification--- correct precise answer --- 7 ft
154. Sprinklers under glass or plastic skylights exposed to the direct
rays of the sun shall be of the temperature classification.--- correct
precise answer --- intermediate
155. The minimum temperature rating of ceiling sprinklers in general
storage, rack storage, rubber tire storage, roll paper storage, and
baled cotton storage applications shall be .--- correct precise answer
--- 150 degrees
156. If there is a sprinkler head within the 7'0" radius and 2'0" above
a unit heater, what rating shall the sprinkler head be?--- correct
precise answer --- high
157. What is the minimum distance an ordinary rated sprinkler head
has to be above an uncovered steam main?--- correct precise answer -
-- more than 2' Feet 6" Inches
158. An exit stairway designed and constructed so that the movement
of the products of combustion produced by a fire occurring in any part
