FDNY S-12: System Types Questions and
answers
The sprinkler system is fitted with automatic devices designed to release water on a fire. These devices
are called SPRINKLER HEADS. A rise in temp. to a predetermined level causes the sprinkler head to open.
Water is then discharged in the form of spray. When the sprinkler heads open they are said to have
__________. - ✅✅fused
About ______ of the fires are extinguished or controlled when sprinklers are installed. The 4% failure
was due to a variety of causes including _______________ piping, closed supply valves,
______________ water lines, improper maintenance, and blocked water supply piping. - ✅✅96%,
defective, frozen
Most standard sprinkler systems have devices that automatically ____________ an alarm when a
sprinkler head discharges water. This alarm is usually an _____________ signal in the building. -
✅✅sound, audible
What are the most commonly installed systems? - ✅✅Wet pipe systems
Wet pipe systems have ____________ in the piping at all times. - ✅✅water
In Wet Pipe Systems, the temperature is maintained at a minimum of ________ degrees F to prevent
the system from freezing. - ✅✅40
Antifreeze Solutions--_______________ is added to the water in piping exposed to freezing
temperatures. - ✅✅Antifreeze
Antifreeze is usually used for small __________________ areas. - ✅✅unheated
T or F: Antifreeze solutions may be used only in accordance with applicable local health regulations. -
✅✅True
T or F: An automatic sprinkler system should be drained to avoid freezing during cold weather. -
✅✅False
Permission to shut down the sprinkler system must be obtained from the ____________ _________
__________. - ✅✅local fire house
Permission from the fire house may be given to shut off a maximum of _____ sprinkler heads on a wet
pipe system. - ✅✅10
answers
The sprinkler system is fitted with automatic devices designed to release water on a fire. These devices
are called SPRINKLER HEADS. A rise in temp. to a predetermined level causes the sprinkler head to open.
Water is then discharged in the form of spray. When the sprinkler heads open they are said to have
__________. - ✅✅fused
About ______ of the fires are extinguished or controlled when sprinklers are installed. The 4% failure
was due to a variety of causes including _______________ piping, closed supply valves,
______________ water lines, improper maintenance, and blocked water supply piping. - ✅✅96%,
defective, frozen
Most standard sprinkler systems have devices that automatically ____________ an alarm when a
sprinkler head discharges water. This alarm is usually an _____________ signal in the building. -
✅✅sound, audible
What are the most commonly installed systems? - ✅✅Wet pipe systems
Wet pipe systems have ____________ in the piping at all times. - ✅✅water
In Wet Pipe Systems, the temperature is maintained at a minimum of ________ degrees F to prevent
the system from freezing. - ✅✅40
Antifreeze Solutions--_______________ is added to the water in piping exposed to freezing
temperatures. - ✅✅Antifreeze
Antifreeze is usually used for small __________________ areas. - ✅✅unheated
T or F: Antifreeze solutions may be used only in accordance with applicable local health regulations. -
✅✅True
T or F: An automatic sprinkler system should be drained to avoid freezing during cold weather. -
✅✅False
Permission to shut down the sprinkler system must be obtained from the ____________ _________
__________. - ✅✅local fire house
Permission from the fire house may be given to shut off a maximum of _____ sprinkler heads on a wet
pipe system. - ✅✅10
