multiple choice 171-226
Questions and Complete
Solutions Graded A+
8-inchpipe - Answer: A riser is 6-inch pipe up through the first three stories of a building. There are no
earthquake requirements.
8-inch diameter - Answer: A nominal 4-inch diameter riser is to be installed in a building in a region
subject to earthquakes^The sleeve to be'in'sta'lledistobe made of Schedule 40 pipe. What nominal
diameter of pipe should be used? c. 5-inch diameter d. 10-inch diameter
Other level - Answer: NFPA 1 3 requires clamps to support the weight of a standpipe^at every —.
40 degrees F - Answer: The dry pilot line is suitable for installations where temperature^are expected to
drop below
Wet pilot line actuation - Answer: The simplest and least costly method of deluge valve actuation is
. automatic (closed) sprinkler, automatic c. open sprinkler (without actuating iprinkler frame (open
sprinkler), and element), special purpose nozzle, and nozzles with special purpose distribution ELO
sprinkler patterns - Answer: The three types of nozzles that may initially be used with a deluge system
are
Computer room - Answer: A deluge system typically would not be used in a _.
Plugged - Answer: When performing a hydrostatic test on deluge system piping, discharge nozzle outlets
must be
Check valve - Answer: What device is used on a preaction system to prevent supervisory air from leaking
through the fire department connection?
, 20 - Answer: All preaction systems that have over blank sprinklers are required to be supervised
1000 - Answer: In a preaction system, a maximum of blank sprinklers may be controlled by one deluge
valve
The rate of change in temprature - Answer: Rate of rise detectors respond to blank
Mercury check - Answer: To prevent delays in operation caused by connecting additional HADs to a
single line of tubing, a blank is used
Higher - Answer: In a mercury check the height of the column of mercury required to go in the reverse
direction is black van that required to go in the forward
Single interlock - Answer: A system that activates when the detection system activates, but does not
activate when a sprinkler head opens, is a _ preaction system
18 inches - Answer: The maximum distance that a sprinkle rcan be located from a detector is blank
A trouble alarm is activated but no water enters the piping - Answer: f a sprinkler head is accidentally
broken on a supervised single-interlock system,
Non interlock - Answer: A system that is a basically a dry pipe system that can also be activated by a
750 - Answer: Unless water can be delivered to the inspector's test connection within 60 seconds,
double-interlock systems are limited to _ gallons.
Electric/ pnumatic double interlock - Answer: The type ofpreaction sprinkler system of choice for
coolers, freezers, and cold storage warehouses is the system.
Intermediate temprature - Answer: A fixed temperature sensor is in an area where the ceiling
temperature can reach 110 degree Farenheit, its temperature category should be
Questions and Complete
Solutions Graded A+
8-inchpipe - Answer: A riser is 6-inch pipe up through the first three stories of a building. There are no
earthquake requirements.
8-inch diameter - Answer: A nominal 4-inch diameter riser is to be installed in a building in a region
subject to earthquakes^The sleeve to be'in'sta'lledistobe made of Schedule 40 pipe. What nominal
diameter of pipe should be used? c. 5-inch diameter d. 10-inch diameter
Other level - Answer: NFPA 1 3 requires clamps to support the weight of a standpipe^at every —.
40 degrees F - Answer: The dry pilot line is suitable for installations where temperature^are expected to
drop below
Wet pilot line actuation - Answer: The simplest and least costly method of deluge valve actuation is
. automatic (closed) sprinkler, automatic c. open sprinkler (without actuating iprinkler frame (open
sprinkler), and element), special purpose nozzle, and nozzles with special purpose distribution ELO
sprinkler patterns - Answer: The three types of nozzles that may initially be used with a deluge system
are
Computer room - Answer: A deluge system typically would not be used in a _.
Plugged - Answer: When performing a hydrostatic test on deluge system piping, discharge nozzle outlets
must be
Check valve - Answer: What device is used on a preaction system to prevent supervisory air from leaking
through the fire department connection?
, 20 - Answer: All preaction systems that have over blank sprinklers are required to be supervised
1000 - Answer: In a preaction system, a maximum of blank sprinklers may be controlled by one deluge
valve
The rate of change in temprature - Answer: Rate of rise detectors respond to blank
Mercury check - Answer: To prevent delays in operation caused by connecting additional HADs to a
single line of tubing, a blank is used
Higher - Answer: In a mercury check the height of the column of mercury required to go in the reverse
direction is black van that required to go in the forward
Single interlock - Answer: A system that activates when the detection system activates, but does not
activate when a sprinkler head opens, is a _ preaction system
18 inches - Answer: The maximum distance that a sprinkle rcan be located from a detector is blank
A trouble alarm is activated but no water enters the piping - Answer: f a sprinkler head is accidentally
broken on a supervised single-interlock system,
Non interlock - Answer: A system that is a basically a dry pipe system that can also be activated by a
750 - Answer: Unless water can be delivered to the inspector's test connection within 60 seconds,
double-interlock systems are limited to _ gallons.
Electric/ pnumatic double interlock - Answer: The type ofpreaction sprinkler system of choice for
coolers, freezers, and cold storage warehouses is the system.
Intermediate temprature - Answer: A fixed temperature sensor is in an area where the ceiling
temperature can reach 110 degree Farenheit, its temperature category should be
