and answers
Alarm Retarding Devices - ANSW -An alarm check valve that is exposed to changing water supply pressure
v v v v v v v v v v v v v v v v
needs an alarm retarding device. This is required to prevent false alarms when the check valve clapper is
v v v v v v v v v v v v v v v v v v
lifted from its seat by a temporary pressure surge. Vane type water flow switches sensitivity can also be
v v v v v v v v v v v v v v v v v v
adjusted to changing water pressures.
v v v v v
blue disk - ANSW -partially out of service- on all fire department connections
v v v v v v v v v v v v
Booster pumps/special service pumps - ANSW -Booster pumps are sometimes used in sprinkler systems.
v v v v v v v v v v v v v
They small pumps with limited power are usually located in the basement or taking suction from gravity
v v v v v v v v v v v v v v v v v
tanks. The booster pump is used when the water pressure available at the highest sprinkler head does not
v v v v v v v v v v v v v v v v v v
quite meet the needs of the sprinkler system. This small pump increases the water pressure in the
v v v v v v v v v v v v v v v v v
sprinkler system until it reaches acceptable levels. The booster pump should not be confused with the fire
v v v v v v v v v v v v v v v v v
pump or the jockey pump.
v v v v v
Curb Valves - ANSW -Gate valves of the non-indicating type are provided in water distribution systems.
v v v v v v v v v v v v v v v
Gate valves allow the sprinkler system to be shut off for repairs or maintenance. Such valves are normally
v v v v v v v v v v v v v v v v v v
a non-rising stem type. They are operated using a special key wrench. A valve box is located over the valve
v v v v v v v v v v v v v v v v v v v v
to keep dirt from the valve. The valve box also provides a convenient access point for the valve wrench to
v v v v v v v v v v v v v v v v v v v v
the valve nut. A complete record should be made for each valve in the system. This record should include
v v v v v v v v v v v v v v v v v v v
the exact location, the date it was installed, the make, the direction of opening, number of turns to open,
v v v v v v v v v v v v v v v v v v v
and any maintenance that was performed.
v v v v v v
The control valve for the building may also be on the outside wall or attached to an upright post, known as
v v v v v v v v v v v v v v v v v v v v
a post indicator valve (PIV). The building or section of the building controlled by the valve is usually
v v v v v v v v v v v v v v v v v v
marked on the post. The position of this valve (open or closed) is shown through a telltale opening in the
v v v v v v v v v v v v v v v v v v v v
post. On some posts, a padlock must first be opened to release the operating wrench or wheel handle.
v v v v v v v v v v v v v v v v v v
deluge sprinkler system - ANSW -employing open sprinklers that are attached to a piping system that is
v v v v v v v v v v v v v v v v
connected to a water supply through a valve that is opened by the operation of a detection system
v v v v v v v v v v v v v v v v v v
installed in the same areas as the sprinklers. WHEN IT OPENS, water flows into the piping system and
v v v v v v v v v v v v v v v v v v
discharges from all sprinklers attached.
v v v v v
DELUGE SPRINKLER SYSTEMS - ANSW -equipped with open sprinkler heads designed to wet down an
v v v v v v v v v v v v v v
entire area involved in a fire. This system is needed when there is danger of a fire rapidly spreading
v v v v v v v v v v v v v v v v v v v
throughout the building. The deluge system will slow down the spread of the fire. Deluge systems are
v v v v v v v v v v v v v v v v v
suitable for hazardous occupancies. This includes buildings in which flammable liquids or other hazardous
v v v v v v v v v v v v v v
materials are handled or stored.
v v v v v
The sprinkler heads in the deluge system are open at all times. Under normal conditions there is no water
v v v v v v v v v v v v v v v v v v
in the piping. The air in the piping is not under pressure. A closed control valve prevents water from
v v v v v v v v v v v v v v v v v v v
flowing into the system. A fire detection device automatically opens the control valve when a fire is
v v v v v v v v v v v v v v v v v
, identified. A supervisory device signals when the valve is opened. When the valve is opened water flows
v v v v v v v v v v v v v v v v v
into the system. The water is then discharged out all of the sprinkler heads. The water control valve may
v v v v v v v v v v v v v v v v v v v
also be opened manually.
v v v v
deluge valve - ANSW -water supply control valve intended to be operated by actuation of an automatic
v v v v v v v v v v v v v v v v
detection system that is installed in the same area as the discharge devices. INTENDED USE IS MANUAL
v v v v v v v v v v v v v v v v v
AND AUTO
v v
Early suppresion fast response sprinklers - ANSW -fast response sprinkler that is listed for its capability to
v v v v v v v v v v v v v v v v
provide fire suppression of specific high challenge fire hazards
v v v v v v v v v
extended coverage sprinkler - ANSW -400 max square feet discharge
v v v v v v v v v
extra large orifice sprinklers - ANSW -= or > 1 inch less pressure to achieve a given discharge density
v v v v v v v v v v v v v v v v v v
fire command center - ANSW -...
v v v v v
fire department connection - ANSW -normally on exterior of building... FDNY can pump supplemental
v v v v v v v v v v v v v
water into the sprinkler system, standpipe, or other system furnishing water for fire extinguishment to
v v v v v v v v v v v v v v v
supplement existing water supplies.
v v v v
fire pump - ANSW -a provider of liquid flow and pressure dedicated to fire protection. A fire pump is a part
v v v v v v v v v v v v v v v v v v v v
of a fire sprinklers system water supply and can be powered by electric, diesel or steam. connected to
v v v v v v v v v v v v v v v v v v
public water source or tank. provides higher pressure to sprinkler system
v v v v v v v v v v v
Fire Pumps - ANSW -used as a main water supply source for sprinkler systems. They may also be used in
v v v v v v v v v v v v v v v v v v v
combination with gravity tanks to supply sprinkler system. Fire pumps are designed to take the water
v v v v v v v v v v v v v v v v
from a supply source and then discharge the water into the fire protection system under pressure. The
v v v v v v v v v v v v v v v v v
amount of pressure with which the water is discharged from the pump is called the total head. The total
v v v v v v v v v v v v v v v v v v v
head is measured in pounds per square inch (psi). The higher the psi rating of the pump the greater the
v v v v v v v v v v v v v v v v v v v v
full flow test - ANSW -performed every 5 years:
v v v v v v v v
1. open main valve to let debris escape, then close
v v v v v v v v v
2. system air a nd water pressrue recorded.
v v v v v v v
3. relieve pressure by opening inspector test valve (use stopwatch)
v v v v v v v v v
4. at dry pipe valve note aire pressure which valve trips an note time
v v v v v v v v v v v v v
5. at inspectors test note time that water flows steadily.
v v v v v v v v v
6. test terminated when clean water flows (shit valve)
v v v v v v v v
compare to past tests v v v
Glass bulb sprinkler - ANSW -operated by heat breaking a glass bulb filled with a non freezing liquid with
v v v v v v v v v v v v v v v v v v
diameters that vary form 3 mm for quick response to 5 mm for standard response
v v v v v v v v v v v v v v v
Green tag - ANSW -no impairment found in entire system- main control valve
v v v v v v v v v v v v