FDNY S15 Supervision Of Foam-
Water Sprinkler Systems
(Citywide) Practice Exam
Questions And Correct Answers
(Verified Answers) Plus Rationales
2026 Q&A
A foam concentrate is most likely to be added to which type of sprinkler system - Deluge
Can a wet pipe system be installed in places that get below freezing? - Yes, if using antifreeze loop
Explain the manual dry standpipe system - Does not have a permanent water supply and the FDC must
be connected to the pump on the engine to pump water into the system
Halogenated extinguishing agents were used to protect computers and other electrical equipment went
activated by what? - Interrupting the chemical reaction between fuel and oxygen
How do you determine if an OS& Y indicator valve is open - The stem is out
How often should smoke detector batteries be replaced? - Twice a year
If a smoldering couch is on fire, which detector would be best to alarm? - Fixed temperature detector
If a standpipe has both 2 1/2 inch and 1 1/2 inch outlets, but does not have the hose associated with it,
what level does it function? - ClassI
, If the municipal water supply cannot meet the needs of pressure and volume to the sprinkler system,
what alternate supply method would be used? - Use the fire pump?
In a frangible bulb, automatic sprinkler, at what temperature does the red break - 155°
In a frangible bulb, automatic sprinkler, which color indicates the highest temperature rating - Black
In most cases, how many sprinklers need to activate to control a fire? - 1-2
An older standpipe systems that were designed to operate at 65 psi, what nozzle type would be used? -
Smooth bore
In older systems when the sprinkler system is activated, the main alarm valve opens, water is fed
through the pipes, then what activates notifying water flow? - Water motor gong
In which system could you find a water system - All of these are correct
In which system is the activation usually delayed for 30 seconds to allow people to leave the area -
Clean agent?
In which way are automatic sprinkler heads NOT categorized - Shape
In which way does a gaseous suppression system NOT suppress the fire - Eliminate the fuel
Installing working smoke, alarms and residential sprinkler systems reduce chance of death by the
occupants by what percentage? - 82%
And instead of the FACU, what open some deluge systems? - Pilot line
Most of North America follows which standard of codes for fire protection? - NFPA
Water Sprinkler Systems
(Citywide) Practice Exam
Questions And Correct Answers
(Verified Answers) Plus Rationales
2026 Q&A
A foam concentrate is most likely to be added to which type of sprinkler system - Deluge
Can a wet pipe system be installed in places that get below freezing? - Yes, if using antifreeze loop
Explain the manual dry standpipe system - Does not have a permanent water supply and the FDC must
be connected to the pump on the engine to pump water into the system
Halogenated extinguishing agents were used to protect computers and other electrical equipment went
activated by what? - Interrupting the chemical reaction between fuel and oxygen
How do you determine if an OS& Y indicator valve is open - The stem is out
How often should smoke detector batteries be replaced? - Twice a year
If a smoldering couch is on fire, which detector would be best to alarm? - Fixed temperature detector
If a standpipe has both 2 1/2 inch and 1 1/2 inch outlets, but does not have the hose associated with it,
what level does it function? - ClassI
, If the municipal water supply cannot meet the needs of pressure and volume to the sprinkler system,
what alternate supply method would be used? - Use the fire pump?
In a frangible bulb, automatic sprinkler, at what temperature does the red break - 155°
In a frangible bulb, automatic sprinkler, which color indicates the highest temperature rating - Black
In most cases, how many sprinklers need to activate to control a fire? - 1-2
An older standpipe systems that were designed to operate at 65 psi, what nozzle type would be used? -
Smooth bore
In older systems when the sprinkler system is activated, the main alarm valve opens, water is fed
through the pipes, then what activates notifying water flow? - Water motor gong
In which system could you find a water system - All of these are correct
In which system is the activation usually delayed for 30 seconds to allow people to leave the area -
Clean agent?
In which way are automatic sprinkler heads NOT categorized - Shape
In which way does a gaseous suppression system NOT suppress the fire - Eliminate the fuel
Installing working smoke, alarms and residential sprinkler systems reduce chance of death by the
occupants by what percentage? - 82%
And instead of the FACU, what open some deluge systems? - Pilot line
Most of North America follows which standard of codes for fire protection? - NFPA
