S12 FDNY Exam -with 100% verified solutions 2024-2025-tutor verified.docx, Exams of Advanced Education

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S12 FDNY Exam -with 100% verified solutions 2024-

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a standard sprinkler has RTI of what? 80 a sprinkler system with open heads is called a? Deluge system the freezing point if ant freeze solutions is measured by what? hydrometer or refractometer local law 58/2009 requires sprinkler and stand pipe risers to be painted what color? yellow the distance for the hanger assembly to the center line of an upright sprinkler head should be? 3 inches the automatic ball drip is located where? Between lower check valve and fire department connection what is the purpose of a ball drip? to prevent freezing in the line

the build up of foreign matter on a sprinkler head is called? loading when a sprinkler head opens it is said to? be fused the minimum air pressure inside a pressure tank is? 75 psi a gravity tank should be atlas how many feet above the highest sprinkler heads it supplies? 25 feet gauges are to be replaced every? 5 years how many spare sprinkler heads are to be on hand when under 300 sprinklers? 6 how many spare spare sprinkler heads are to be on hand when there is 300 to 1000 sprinklers? 12 how many spare sprinkler heads are to be on hand when there is over 1000 sprinklers? 24 all sprinklers prior to what date shall be replaced? 1920

house pumps fill the gravity tank at what gpm? 65 gpm 3 feet below the sprinkler head deflector the spray pattern of a sprinkler is ? 16 feet at 15 gpm FDNY must be notified for an out of service condition if the system is going to be out for how long? 8 hours a hand drawn sketch of the compactor system must be drawn by who? certificate of fitness holder a pre action valve prevents what from entering the system? water Pipe hangars 4 inches and smaller require what size threaded rod? 3/8 inch Pipe hangars that are 5, 6, and 8 inch pipe require what size threaded rod? 1/2 inch Pipe hangars for 10 and 12 inch pipe require what size threaded rod? 5/8 inch

How much distance should be maintained from sprinkler head to any storage in a room? minimum of 18 inches Sprinkler systems should be inspected for proper number of heads and wrenches how often? annually The temperature inside the fire pump room is maintained above what temperature? 40 degrees f Fire department connections shall be free of obstructions for how many feet? 3 feet in both directions The weekly test for a diesel fire pump is how long? 30 minutes The weekly test for an electric fire pump is how long? 10 minutes A sprinkler head that has been recalled (no longer legal) is a? a cycling sprinkler head

How often shall the stem of an OS&Y valve be lubricated? annually The five year dry pipe trip test is to be performed by? see chart master fire suppression contractor The interior of check valves should be inspected how often? see chart 5 years Fire Department connections are to be inspected? see chart quarterly or every three months In a water spray fixed system inspection, the strainer is corroded, what color tag should be put on? see chart yellow The hyrdaulic name plate shall be inspected? see chart quarterly or every three months Pre-action and deluge valves are to be tested? see chart annually

A sprinkler head with a red frame has a temperature classification of? extra high What color tag is required when sprinkler heads are found to be lightly corroded? yellow What color tag is required when the circuit breakers on a special service pump are over two years old orange What tag is required when sprinkler heads prior to 1920 have not been replaced? orange During an operational test of foam-water sprinkler system the nozzles are plugged what tag is required? red Steel Water storage tanks Without corrosive protection shall be inspected every? every 3 years

A Sprinkler head with a white frame has a temperature rating of 175- Upon inspection of a sprinkler system the hydraulic name plate was missing what color tag is required? yellow the temperature classification of a sprinkler head with a blue bulb is? high when inspection a pre-action system the electrical components are not in service, what color tag is required? red when inspecting a sprinkler system the spare sprinkler head cabinet is missing, what color tag is required? yellow Vane type water flow devices shall be tested? quarterly or every three months On Dry type sprinklers heads no test was conducted for 12 years, what color tag is required? yellow

what color disc is placed when system is fully out of service? white what color disc is placed when system is partially out of service? blue Preaction Sprinkler System no water in piping on normal conditions. heat responsive devises trip the system Preaction system with recycling feature controls sprinklers to turn off if fire is put out or heat drops. what is the minimum size of threaded rod required for sprinkler piping? 3/8 inch how often are fire department connections hydro-statically tested? every 5 years sprinkler heads exposed to corrosive conditions are covered with what? wax or lead

automatic sprinkler systems have what color caps on the fire department connections? green non automatic sprinkler systems have what color caps on the fire department connections? silver in a pressurized tank the water rot air ratio is what 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? 400 inspection records are maintained on site for how long? 3 years underwriters labs and factory mutual are what? testing companies a quick response sprinkler has an RTI ( response time index) of what?