FDNY S15 Supervision Of Foam-
Water Sprinkler Systems
(Citywide) Practice Exam
Questions And Correct Answers
(Verified Answers)
what is the minimum size of threaded rod required for sprinkler piping? - ANSWER - 3/8 inch
how often are fire department connections hydro-statically tested? - ANSWER - every 5 years
sprinkler heads exposed to corrosive conditions are covered with what? - ANSWER - wax or lead
automatic sprinkler systems have what color caps on the fire department connections? - ANSWER -
green
non automatic sprinkler systems have what color caps on the fire department connections? - ANSWER -
silver
in a pressurized tank the water rot air ratio is what - ANSWER - 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? - ANSWER - 400
inspection records are maintained on site for how long? - ANSWER - 3 years
underwriters labs and factory mutual are what? - ANSWER - testing companies
, a quick response sprinkler has an RTI ( response time index) of what? - ANSWER - 50
a standard sprinkler has RTI of what? - ANSWER - 80
a sprinkler system with open heads is called a? - ANSWER - Deluge system
the freezing point if ant freeze solutions is measured by what? - ANSWER - hydrometer or refractometer
local law 58/2009 requires sprinkler and stand pipe risers to be painted what color? - ANSWER - yellow
the distance for the hanger assembly to the center line of an upright sprinkler head should be? -
ANSWER - 3 inches
the automatic ball drip is located where? - ANSWER - Between lower check valve and fire department
connection
what is the purpose of a ball drip? - ANSWER - to prevent freezing in the line
the build up of foreign matter on a sprinkler head is called? - ANSWER - loading
when a sprinkler head opens it is said to? - ANSWER - be fused
the minimum air pressure inside a pressure tank is? - ANSWER - 75 psi
a gravity tank should be atlas how many feet above the highest sprinkler heads it supplies? - ANSWER -
25 feet
gauges are to be replaced every? - ANSWER - 5 years
how many spare sprinkler heads are to be on hand when under 300 sprinklers? - ANSWER - 6
Water Sprinkler Systems
(Citywide) Practice Exam
Questions And Correct Answers
(Verified Answers)
what is the minimum size of threaded rod required for sprinkler piping? - ANSWER - 3/8 inch
how often are fire department connections hydro-statically tested? - ANSWER - every 5 years
sprinkler heads exposed to corrosive conditions are covered with what? - ANSWER - wax or lead
automatic sprinkler systems have what color caps on the fire department connections? - ANSWER -
green
non automatic sprinkler systems have what color caps on the fire department connections? - ANSWER -
silver
in a pressurized tank the water rot air ratio is what - ANSWER - 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? - ANSWER - 400
inspection records are maintained on site for how long? - ANSWER - 3 years
underwriters labs and factory mutual are what? - ANSWER - testing companies
, a quick response sprinkler has an RTI ( response time index) of what? - ANSWER - 50
a standard sprinkler has RTI of what? - ANSWER - 80
a sprinkler system with open heads is called a? - ANSWER - Deluge system
the freezing point if ant freeze solutions is measured by what? - ANSWER - hydrometer or refractometer
local law 58/2009 requires sprinkler and stand pipe risers to be painted what color? - ANSWER - yellow
the distance for the hanger assembly to the center line of an upright sprinkler head should be? -
ANSWER - 3 inches
the automatic ball drip is located where? - ANSWER - Between lower check valve and fire department
connection
what is the purpose of a ball drip? - ANSWER - to prevent freezing in the line
the build up of foreign matter on a sprinkler head is called? - ANSWER - loading
when a sprinkler head opens it is said to? - ANSWER - be fused
the minimum air pressure inside a pressure tank is? - ANSWER - 75 psi
a gravity tank should be atlas how many feet above the highest sprinkler heads it supplies? - ANSWER -
25 feet
gauges are to be replaced every? - ANSWER - 5 years
how many spare sprinkler heads are to be on hand when under 300 sprinklers? - ANSWER - 6
