FDNY S-12 Questions with Answers (100%
Correct Answers)
what is the minimum size of threaded rod required for sprinkler piping?
Ans: 3/8 inch
how often are fire department connections hydro-statically tested?
Ans: every 5 years
sprinkler heads exposed to corrosive conditions are covered with what?
Ans: wax or lead
automatic sprinkler systems have what color caps on the fire department connections?
Ans: green
non automatic sprinkler systems have what color caps on the fire department
connections?
Ans: silver
in a pressurized tank the water toair ratio is what
Ans: 2 to 1 which means 2 parts water to 1 part air which also means 66.33% water and
33.67%air
sprinkler heads are factory tested at what psi?
Ans: 400
inspection records are maintained on site for how long?
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, Ans: 3 years
underwriters labs and factory mutual are what?
Ans: testing companies
a quick response sprinkler has an RTI ( response time index) of what?
Ans: 50
a standard sprinkler has RTI of what?
Ans: 80
a sprinkler system with open heads is called a?
Ans: Deluge system
the freezing point if ant freeze solutions is measured by what?
Ans: hydrometer or refractometer
local law 58/2009 requires sprinkler and stand pipe risers to be painted what color?
Ans: yellow
the distance for the hanger assembly to the center line of an upright sprinkler head
should be?
Ans: 3 inches
the automatic ball drip is located where?
Ans: Between lower check valve and fire department connection
what is the purpose of a ball drip?
Ans: to prevent freezing in the line
the build up of foreign matter on a sprinkler head is called?
© 2025 All rights reserved
Correct Answers)
what is the minimum size of threaded rod required for sprinkler piping?
Ans: 3/8 inch
how often are fire department connections hydro-statically tested?
Ans: every 5 years
sprinkler heads exposed to corrosive conditions are covered with what?
Ans: wax or lead
automatic sprinkler systems have what color caps on the fire department connections?
Ans: green
non automatic sprinkler systems have what color caps on the fire department
connections?
Ans: silver
in a pressurized tank the water toair ratio is what
Ans: 2 to 1 which means 2 parts water to 1 part air which also means 66.33% water and
33.67%air
sprinkler heads are factory tested at what psi?
Ans: 400
inspection records are maintained on site for how long?
© 2025 All rights reserved
, Ans: 3 years
underwriters labs and factory mutual are what?
Ans: testing companies
a quick response sprinkler has an RTI ( response time index) of what?
Ans: 50
a standard sprinkler has RTI of what?
Ans: 80
a sprinkler system with open heads is called a?
Ans: Deluge system
the freezing point if ant freeze solutions is measured by what?
Ans: hydrometer or refractometer
local law 58/2009 requires sprinkler and stand pipe risers to be painted what color?
Ans: yellow
the distance for the hanger assembly to the center line of an upright sprinkler head
should be?
Ans: 3 inches
the automatic ball drip is located where?
Ans: Between lower check valve and fire department connection
what is the purpose of a ball drip?
Ans: to prevent freezing in the line
the build up of foreign matter on a sprinkler head is called?
© 2025 All rights reserved
