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S-12 CITYWIDE SPRINKLER SYSTEMS, S12
SPRINKLER TEST 2025 BRAND NEW ACTUAL
EXAM WITH ANSWERS.
Water Spray Fixed System - correct answer -A special fixed pipe
system connected to a reliable fire protection water supply and
equipped with water spray nozzles for specific water discharge
and distribution over the surface or area to be protected. The
piping system is connected to the water supply through an
automatically or manually actuated valve that initiates the flow of
water. An automatic valve is actuated by operation of automatic
detection or manual release equipment installed in the same
areas as the water spray nozzles. (In special cases, the automatic
detection system may also be located in another area.)
PREACTION SPRINKLER SYSTEMS - correct answer -designed
for situations where there is danger of serious water damage.
Water damage is usually caused by damaged sprinklers or
broken piping. Under normal conditions there is no water in the
piping. The air in the piping may or may not be is under pressure.
A preaction valve prevents the water from entering the system.
The valve is automatically opened when a fire detection system
discovers that there is a fire or smoke condition. The preaction
valve is tripped by the fire detection system before any of the
sprinkler heads open. A supervisory device signals when the
valve is opened. The preaction valve can also be operated
manually.
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DELUGE SPRINKLER SYSTEMS - correct answer -equipped
with open sprinkler heads designed to wet down an entire area
involved in a fire. This system is needed when there is danger of
a fire rapidly spreading throughout the building. The deluge
system will slow down the spread of the fire. Deluge systems are
suitable for hazardous occupancies. This includes buildings in
which flammable liquids or other hazardous materials are handled
or stored.
The sprinkler heads in the deluge system are open at all times.
Under normal conditions there is no water in the piping. The air in
the piping is not under pressure. A closed control valve prevents
water from flowing into the system. A fire detection device
automatically opens the control valve when a fire is identified. A
supervisory device signals when the valve is opened. When the
valve is opened water flows into the system. The water is then
discharged out all of the sprinkler heads. The water control valve
may also be opened manually.
NON-AUTOMATIC DRY SPRINKLER SYSTEMS - correct
answer -ll pipes are normally dry. Water is supplied when needed
by pumping water into the system through the Fire Department
connection. Some of these systems are supplied by manual
operation of a water control valve and may be equipped with
sprinklers with or without fusible links.
There are several non-automatic systems: 1) Perforated pipe
systems - a single line of piping drilled at intervals for water
discharge. These systems are usually found in basements or
other areas difficult to reach in fire fighting operations. 2) Open
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fixed spray nozzles for transformer vaults or other hazardous
areas; 3) exterior exposure sprinklers (or window sprinklers) use
open sprinkler heads to form an external water curtain on the
walls of a building, and 4) Foam supply systems are used for the
protection of special hazardous occupancies.
Curb Valves - correct answer -Gate valves of the non-indicating
type are provided in water distribution systems. Gate valves allow
the sprinkler system to be shut off for repairs or maintenance.
Such valves are normally a non-rising stem type. They are
operated using a special key wrench. A valve box is located over
the valve to keep dirt from the valve. The valve box also provides
a convenient access point for the valve wrench to the valve nut. A
complete record should be made for each valve in the system.
This record should include the exact location, the date it was
installed, the make, the direction of opening, number of turns to
open, and any maintenance that was performed.
The control valve for the building may also be on the outside wall
or attached to an upright post, known as a post indicator valve
(PIV). The building or section of the building controlled by the
valve is usually marked on the post. The position of this valve
(open or closed) is shown through a telltale opening in the post.
On some posts, a padlock must first be opened to release the
operating wrench or wheel handle.
Fire Pumps - correct answer -used as a main water supply source
for sprinkler systems. They may also be used in combination with
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gravity tanks to supply sprinkler system. Fire pumps are designed
to take the water from a supply source and then discharge the
water into the fire protection system under pressure.
Waterflow Alarm Valves - correct answer -The basic design of
most water-flow alarm valves is that of a check valve which lifts
from its seat when water flows into a sprinkler system. This alarm
then starts an audible signal to alert the occupants in the building
that the sprinkler system has been activated.
Vane type waterflow - correct answer -Switches have a paddle
inserted inside the main supply piping perpendicular to the
direction of flow. Upon waterflow, the paddle switch transmits an
alarm. Vane type waterflow switches cannot be installed to
monitor waterflow in dry pipe sprinkler systems.
Alarm Retarding Devices - correct answer -An alarm check valve
that is exposed to changing water supply pressure needs an
alarm retarding device. This is required to prevent false alarms
when the check valve clapper is lifted from its seat by a temporary
pressure surge. Vane type water flow switches sensitivity can also
be adjusted to changing water pressures.
S-12 CITYWIDE SPRINKLER SYSTEMS, S12
SPRINKLER TEST 2025 BRAND NEW ACTUAL
EXAM WITH ANSWERS.
Water Spray Fixed System - correct answer -A special fixed pipe
system connected to a reliable fire protection water supply and
equipped with water spray nozzles for specific water discharge
and distribution over the surface or area to be protected. The
piping system is connected to the water supply through an
automatically or manually actuated valve that initiates the flow of
water. An automatic valve is actuated by operation of automatic
detection or manual release equipment installed in the same
areas as the water spray nozzles. (In special cases, the automatic
detection system may also be located in another area.)
PREACTION SPRINKLER SYSTEMS - correct answer -designed
for situations where there is danger of serious water damage.
Water damage is usually caused by damaged sprinklers or
broken piping. Under normal conditions there is no water in the
piping. The air in the piping may or may not be is under pressure.
A preaction valve prevents the water from entering the system.
The valve is automatically opened when a fire detection system
discovers that there is a fire or smoke condition. The preaction
valve is tripped by the fire detection system before any of the
sprinkler heads open. A supervisory device signals when the
valve is opened. The preaction valve can also be operated
manually.
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DELUGE SPRINKLER SYSTEMS - correct answer -equipped
with open sprinkler heads designed to wet down an entire area
involved in a fire. This system is needed when there is danger of
a fire rapidly spreading throughout the building. The deluge
system will slow down the spread of the fire. Deluge systems are
suitable for hazardous occupancies. This includes buildings in
which flammable liquids or other hazardous materials are handled
or stored.
The sprinkler heads in the deluge system are open at all times.
Under normal conditions there is no water in the piping. The air in
the piping is not under pressure. A closed control valve prevents
water from flowing into the system. A fire detection device
automatically opens the control valve when a fire is identified. A
supervisory device signals when the valve is opened. When the
valve is opened water flows into the system. The water is then
discharged out all of the sprinkler heads. The water control valve
may also be opened manually.
NON-AUTOMATIC DRY SPRINKLER SYSTEMS - correct
answer -ll pipes are normally dry. Water is supplied when needed
by pumping water into the system through the Fire Department
connection. Some of these systems are supplied by manual
operation of a water control valve and may be equipped with
sprinklers with or without fusible links.
There are several non-automatic systems: 1) Perforated pipe
systems - a single line of piping drilled at intervals for water
discharge. These systems are usually found in basements or
other areas difficult to reach in fire fighting operations. 2) Open
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fixed spray nozzles for transformer vaults or other hazardous
areas; 3) exterior exposure sprinklers (or window sprinklers) use
open sprinkler heads to form an external water curtain on the
walls of a building, and 4) Foam supply systems are used for the
protection of special hazardous occupancies.
Curb Valves - correct answer -Gate valves of the non-indicating
type are provided in water distribution systems. Gate valves allow
the sprinkler system to be shut off for repairs or maintenance.
Such valves are normally a non-rising stem type. They are
operated using a special key wrench. A valve box is located over
the valve to keep dirt from the valve. The valve box also provides
a convenient access point for the valve wrench to the valve nut. A
complete record should be made for each valve in the system.
This record should include the exact location, the date it was
installed, the make, the direction of opening, number of turns to
open, and any maintenance that was performed.
The control valve for the building may also be on the outside wall
or attached to an upright post, known as a post indicator valve
(PIV). The building or section of the building controlled by the
valve is usually marked on the post. The position of this valve
(open or closed) is shown through a telltale opening in the post.
On some posts, a padlock must first be opened to release the
operating wrench or wheel handle.
Fire Pumps - correct answer -used as a main water supply source
for sprinkler systems. They may also be used in combination with
, Page | 4
gravity tanks to supply sprinkler system. Fire pumps are designed
to take the water from a supply source and then discharge the
water into the fire protection system under pressure.
Waterflow Alarm Valves - correct answer -The basic design of
most water-flow alarm valves is that of a check valve which lifts
from its seat when water flows into a sprinkler system. This alarm
then starts an audible signal to alert the occupants in the building
that the sprinkler system has been activated.
Vane type waterflow - correct answer -Switches have a paddle
inserted inside the main supply piping perpendicular to the
direction of flow. Upon waterflow, the paddle switch transmits an
alarm. Vane type waterflow switches cannot be installed to
monitor waterflow in dry pipe sprinkler systems.
Alarm Retarding Devices - correct answer -An alarm check valve
that is exposed to changing water supply pressure needs an
alarm retarding device. This is required to prevent false alarms
when the check valve clapper is lifted from its seat by a temporary
pressure surge. Vane type water flow switches sensitivity can also
be adjusted to changing water pressures.
