S-12 CITYWIDE SPRINKLER SYSTEMS, S12
SPRINKLER TEST LATEST UPDATE WITH 100%
VERIFIED SOLUTIONS!!
Solder Link Sprinkler - ANSWER>>A sprinkler operated by the melting of a metal link,
they vary in size and configuration for quick response and standard response
sprinklers. The smaller the size of the link, the faster the sprinkler operates.
Spray Sprinkler - ANSWER>>A type of sprinkler listed for its capability to provide fire
control for a wide range of fire hazards. The most commonly used sprinkler since 1953.
Standard Response Sprinkler Head - ANSWER>>A sprinkler having a fusible link with a
response time index (RTI) of 80 or more.
Supervisory signal-initiating device - ANSWER>>An initiating device, such as a valve
supervisory switch,that initiates a supervisory signal.
Testing ANSWER>>A process by which the operational status of a system as intended is
determined through periodic physical checks on water based fire protection systems,
such as waterflow tests, fire pump tests, alarm tests, and trip tests of dry pipe, deluge,
or preaction valves. These follow-up tests are conducted at the intervals specified in the
appropriate chapter of NFPA #25, 2002 edition.
Upright Sprinkler ANSWER A sprinkler designed to be installed in such a way that the
water spray is directed upwards against the deflector.
Water Spray Fixed System 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 water
supply is connected with the piping system through an automatically or manually
actuated valve which opens admitting water to the piping system. An automatic valve is
actuated by the 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 - ANSWER>>designed for situations where there is
danger of serious water damage. Water damage usually occurs when sprinklers are
damaged, or piping is broken. In normal circumstances, there is no water in the piping.
The air within the piping may be under pressure or may not be pressurized. A preaction
valve keeps the water from entering the system. An automatic operation of the valve is
initiated in conjunction with a fire detection system that has determined a fire or smoke
condition exists. The fire detection system operates-or trips-the preaction valve before
any of the sprinkler heads have opened. A supervisory device signals that the valve has
opened. The preaction valve can also be manually operated.
DELUGE SPRINKLER SYSTEMS - 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 opens, water enters the system. Water
then discharges out all of the sprinkler heads. It is also possible to open the water
control valve manually.
NON-AUTOMATIC DRY SPRINKLER SYSTEMS - 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 a number of 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 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 - 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 nonrising 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 for each valve installed in a given system should be made in its
entirety, noting the exact location, the date installed, the make, direction of opening,
number of turns to open and maintenance performed.
The building control valve could be located on an outside wall, or may also be mounted
attached to an upright post; called a post indicator valve, or PIV. The building or portion
of building served by valve is normally stencil marked on the post. A telltale opening in
post indicates the status of the position of this valve (open/closed). Most posts require
first opening a padlock to free the operating wrench or wheel handle.
Fire Pumps they are the major source of water supply for sprinkler systems. They are
also applied along with gravity tanks to supply a 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 - 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 initiates an audible signal to alert the occupants in the building that the
sprinkler system has been activated.
Vane type waterflow - 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 ANSWER An alarm check valve that is exposed to changing
water supply pressure requires an alarm retarding device. This prevents 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.
SPRINKLER TEST LATEST UPDATE WITH 100%
VERIFIED SOLUTIONS!!
Solder Link Sprinkler - ANSWER>>A sprinkler operated by the melting of a metal link,
they vary in size and configuration for quick response and standard response
sprinklers. The smaller the size of the link, the faster the sprinkler operates.
Spray Sprinkler - ANSWER>>A type of sprinkler listed for its capability to provide fire
control for a wide range of fire hazards. The most commonly used sprinkler since 1953.
Standard Response Sprinkler Head - ANSWER>>A sprinkler having a fusible link with a
response time index (RTI) of 80 or more.
Supervisory signal-initiating device - ANSWER>>An initiating device, such as a valve
supervisory switch,that initiates a supervisory signal.
Testing ANSWER>>A process by which the operational status of a system as intended is
determined through periodic physical checks on water based fire protection systems,
such as waterflow tests, fire pump tests, alarm tests, and trip tests of dry pipe, deluge,
or preaction valves. These follow-up tests are conducted at the intervals specified in the
appropriate chapter of NFPA #25, 2002 edition.
Upright Sprinkler ANSWER A sprinkler designed to be installed in such a way that the
water spray is directed upwards against the deflector.
Water Spray Fixed System 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 water
supply is connected with the piping system through an automatically or manually
actuated valve which opens admitting water to the piping system. An automatic valve is
actuated by the 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 - ANSWER>>designed for situations where there is
danger of serious water damage. Water damage usually occurs when sprinklers are
damaged, or piping is broken. In normal circumstances, there is no water in the piping.
The air within the piping may be under pressure or may not be pressurized. A preaction
valve keeps the water from entering the system. An automatic operation of the valve is
initiated in conjunction with a fire detection system that has determined a fire or smoke
condition exists. The fire detection system operates-or trips-the preaction valve before
any of the sprinkler heads have opened. A supervisory device signals that the valve has
opened. The preaction valve can also be manually operated.
DELUGE SPRINKLER SYSTEMS - 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 opens, water enters the system. Water
then discharges out all of the sprinkler heads. It is also possible to open the water
control valve manually.
NON-AUTOMATIC DRY SPRINKLER SYSTEMS - 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 a number of 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 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 - 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 nonrising 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 for each valve installed in a given system should be made in its
entirety, noting the exact location, the date installed, the make, direction of opening,
number of turns to open and maintenance performed.
The building control valve could be located on an outside wall, or may also be mounted
attached to an upright post; called a post indicator valve, or PIV. The building or portion
of building served by valve is normally stencil marked on the post. A telltale opening in
post indicates the status of the position of this valve (open/closed). Most posts require
first opening a padlock to free the operating wrench or wheel handle.
Fire Pumps they are the major source of water supply for sprinkler systems. They are
also applied along with gravity tanks to supply a 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 - 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 initiates an audible signal to alert the occupants in the building that the
sprinkler system has been activated.
Vane type waterflow - 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 ANSWER An alarm check valve that is exposed to changing
water supply pressure requires an alarm retarding device. This prevents 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.
