s12 fdnyc exam questions with complete solutions
A combination valve handles must be painted what color?
Correct Answers Yellow
A dedicated sprinkler valve handles must be painted what color?
Correct Answers Green
A dedicated standpipe valve handles must be painted what
color? Correct Answers RED
Alcohol Resistant Foam Concentrate? Correct Answers used
for fires on water soluble materials and hydrocarbon fires and
other fuels destructive to AFFF or FFFP foams. These foams
will form a blanket over the surface of the alcohol.
All parts of bracing and fittings attaching bracing to the piping
shall lie in a straight line to avoid WHAT? Correct Answers
uneven loading of fittings and fasteners
Aqueous Film Forming Concentrate (AFFF)? Correct Answers
a concentrate based on fluorinated surfactants with a foam
stabilizer and are diluted with water to a 1%, 3% or 6% solution.
These foams have the ability of spreading over the surface of
hydrocarbon based liquids.
Atmospheric Type Storage Tanks? Correct Answers These
tanks must be fitted with manholes located to allow for
inspection of interior tank surfaces, connections for pump
suction, relief, testing lines, liquid level indicators along with
filling and drainage connections
,AUTOMATIC PRESSURE MAINTENANCE DEVICE
Correct Answers Maintains pneumatic pressure on the piping
system set to specific limits by controlling a plant air system, a
single air compressor, or a nitrogen supply.
Bladder Tank Proportioner Correct Answers is similar to a
standard pressure proportioner, EXCEPT the foam concentrate
is contained inside a diaphragm bag that is within a pressure
vessel (uses extra pressure). Operation is the same as a standard
pressure proportioneer, EXCEPT this system can be used with
all foam concentrates, regardless of specific gravity. (MOST
COMMON)
Class A Foams? Correct Answers operate by lowering the
surface tension of water assisting in the wetting and saturation of
Class A fuels which include wood and paper. These foam
solutions are unable to control the explosive vapors produced by
flammable liquids and are not appropriate to protect Class B
fires.
Class B Foams:? Correct Answers operate by smothering the
fire by removing oxygen from the fire triangle. They also form a
film over the flammable liquid to contain the flammable vapors.
These foams are the most common type used in Foam-Water
Sprinkler Systems. Class B Foams are classified as Synthetic or
Protein. Protein Foams from non-animal sources are preferred
due to their limited biological components that are less harmful
to the environment.
,Common Deficiencies? Correct Answers The most common
sprinkler system deficiencies include painted or loaded sprinkler
heads, building contents located less than 18 inches below
sprinkler deflectors, changes from the original wall locations,
ceiling heights, and positioning of mechanical equipment. For
concealed sprinkler systems, cover plates with non-factory
coatings and the lack of required gap between cover plate and
ceiling and blocking of the spray patterns from light fixtures
close to the sprinklers are the most common deficiencies seen in
the field. Missing trim or cover plates not attached properly to
sprinklers may indicate hanger deficiencies and may not allow
the sprinkler deflectors to drop below the ceiling blocking the
spray pattern.
CONTROL VALVES Correct Answers System Control Valve
Signage (FC 903.5.4)
A sign identifying the location of the sidewalk box housing the
sprinkler system control valve shall be conspicuously posted on
the exterior wall of the building directly opposite the sidewalk
box. Such sign shall have red letters 1 inch in height on a white
background and read: "Sprinkler System Shutoff Valve (indicate
distance) feet opposite this sign" or other approved design. This
was in 1968 Building Code but was omitted in the 2008 Codes.
Deluge Foam-Water Sprinkler Systems Correct Answers
equipped with open nozzles and are operated by a detection
system in the protected area that may be electrically,
hydraulically, or pneumatically operated. A manual release is
also required for tripping the Deluge valve.
, Deluge Foam-Water Sprinkler Systems? Correct Answers
equipped with sprinklers or nozzles with fusible links along with
a detection system in the protected area that may be electrically,
hydraulically, or pneumatically operated. A manual release is
also required for tripping the control valve. System discharge
piping may or may not be pneumatically supervised for piping
integrity.
Dry Pipe Foam-Water Systems Correct Answers operation is
the same as a dry pipe sprinkler system using sprinkler heads or
discharge nozzles with fusible links and system piping under
pneumatic pressure. Upon the operation of a fusible link, the
pneumatic pressure is released and the dry pipe valve opens
permitting the water/foam solution into the system.
Factors that may require further investigation? Correct Answers
Installations that don't appear to be correct including sprinkler
heads located more than 22 inches below the ceiling or structure,
sprinklers not installed in accordance with their listing, using
sprinklers with different RTI in the same protected area or the
wrong RTI for the occupancy classification, undersized piping,
incompatible piping materials, flexible sprinkler hoses not
attached to The building structure, along with areas of the
building not protected by the sprinkler system all require further
investigation by a qualified MFSPC.
Film Forming Fluoroprotien Foam Concentrate (FFFP)?
Correct Answers concentrate that uses fluorinated surfactants
and produce a fluid aqueous film and is used to suppress
hydrocarbon fuel vapors.
A combination valve handles must be painted what color?
Correct Answers Yellow
A dedicated sprinkler valve handles must be painted what color?
Correct Answers Green
A dedicated standpipe valve handles must be painted what
color? Correct Answers RED
Alcohol Resistant Foam Concentrate? Correct Answers used
for fires on water soluble materials and hydrocarbon fires and
other fuels destructive to AFFF or FFFP foams. These foams
will form a blanket over the surface of the alcohol.
All parts of bracing and fittings attaching bracing to the piping
shall lie in a straight line to avoid WHAT? Correct Answers
uneven loading of fittings and fasteners
Aqueous Film Forming Concentrate (AFFF)? Correct Answers
a concentrate based on fluorinated surfactants with a foam
stabilizer and are diluted with water to a 1%, 3% or 6% solution.
These foams have the ability of spreading over the surface of
hydrocarbon based liquids.
Atmospheric Type Storage Tanks? Correct Answers These
tanks must be fitted with manholes located to allow for
inspection of interior tank surfaces, connections for pump
suction, relief, testing lines, liquid level indicators along with
filling and drainage connections
,AUTOMATIC PRESSURE MAINTENANCE DEVICE
Correct Answers Maintains pneumatic pressure on the piping
system set to specific limits by controlling a plant air system, a
single air compressor, or a nitrogen supply.
Bladder Tank Proportioner Correct Answers is similar to a
standard pressure proportioner, EXCEPT the foam concentrate
is contained inside a diaphragm bag that is within a pressure
vessel (uses extra pressure). Operation is the same as a standard
pressure proportioneer, EXCEPT this system can be used with
all foam concentrates, regardless of specific gravity. (MOST
COMMON)
Class A Foams? Correct Answers operate by lowering the
surface tension of water assisting in the wetting and saturation of
Class A fuels which include wood and paper. These foam
solutions are unable to control the explosive vapors produced by
flammable liquids and are not appropriate to protect Class B
fires.
Class B Foams:? Correct Answers operate by smothering the
fire by removing oxygen from the fire triangle. They also form a
film over the flammable liquid to contain the flammable vapors.
These foams are the most common type used in Foam-Water
Sprinkler Systems. Class B Foams are classified as Synthetic or
Protein. Protein Foams from non-animal sources are preferred
due to their limited biological components that are less harmful
to the environment.
,Common Deficiencies? Correct Answers The most common
sprinkler system deficiencies include painted or loaded sprinkler
heads, building contents located less than 18 inches below
sprinkler deflectors, changes from the original wall locations,
ceiling heights, and positioning of mechanical equipment. For
concealed sprinkler systems, cover plates with non-factory
coatings and the lack of required gap between cover plate and
ceiling and blocking of the spray patterns from light fixtures
close to the sprinklers are the most common deficiencies seen in
the field. Missing trim or cover plates not attached properly to
sprinklers may indicate hanger deficiencies and may not allow
the sprinkler deflectors to drop below the ceiling blocking the
spray pattern.
CONTROL VALVES Correct Answers System Control Valve
Signage (FC 903.5.4)
A sign identifying the location of the sidewalk box housing the
sprinkler system control valve shall be conspicuously posted on
the exterior wall of the building directly opposite the sidewalk
box. Such sign shall have red letters 1 inch in height on a white
background and read: "Sprinkler System Shutoff Valve (indicate
distance) feet opposite this sign" or other approved design. This
was in 1968 Building Code but was omitted in the 2008 Codes.
Deluge Foam-Water Sprinkler Systems Correct Answers
equipped with open nozzles and are operated by a detection
system in the protected area that may be electrically,
hydraulically, or pneumatically operated. A manual release is
also required for tripping the Deluge valve.
, Deluge Foam-Water Sprinkler Systems? Correct Answers
equipped with sprinklers or nozzles with fusible links along with
a detection system in the protected area that may be electrically,
hydraulically, or pneumatically operated. A manual release is
also required for tripping the control valve. System discharge
piping may or may not be pneumatically supervised for piping
integrity.
Dry Pipe Foam-Water Systems Correct Answers operation is
the same as a dry pipe sprinkler system using sprinkler heads or
discharge nozzles with fusible links and system piping under
pneumatic pressure. Upon the operation of a fusible link, the
pneumatic pressure is released and the dry pipe valve opens
permitting the water/foam solution into the system.
Factors that may require further investigation? Correct Answers
Installations that don't appear to be correct including sprinkler
heads located more than 22 inches below the ceiling or structure,
sprinklers not installed in accordance with their listing, using
sprinklers with different RTI in the same protected area or the
wrong RTI for the occupancy classification, undersized piping,
incompatible piping materials, flexible sprinkler hoses not
attached to The building structure, along with areas of the
building not protected by the sprinkler system all require further
investigation by a qualified MFSPC.
Film Forming Fluoroprotien Foam Concentrate (FFFP)?
Correct Answers concentrate that uses fluorinated surfactants
and produce a fluid aqueous film and is used to suppress
hydrocarbon fuel vapors.
