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FDNY S 12 CITYWIDE SPRINKLER
SYSTEMS EXAM 2024 | ALL QUESTIONS
AND CORRECT ANSWERS | ALREADY
GRADED A+ | LATEST EXAM (JUST
RELEASED)
What is put when a system is in an unplanned out of service condition? -----
- CORRECT ANSWER---------------In addition, for an unplanned out of service condition, a disc (white or blue) shall be placed at all affected fire department connections What is placed when there is no impairment with the sprinkler system? -----
- CORRECT ANSWER---------------If no impairment is found in the entire system green tags will be placed on the main control valve. What is the tags for a system which is fully out of service? ------CORRECT ANSWER---------------System fully out of service Red White What are the tags for a system that is partially out of service ------ CORRECT ANSWER---------------System partially out of service Red Blue ANTIFREEZE SPRINKLER SYSTEM ------CORRECT ANSWER-------------- -- A wet pipe sprinkler system employing automatic sprinklers that are attached to a piping system that contains an antifreeze solution and is connected to a water supply. The antifreeze solution is discharged, followed by water, immediately upon operation of sprinklers opened by heat from a fire.
AUTOMATIC BALL DRIP ------CORRECT ANSWER---------------- An automatic drain valve horizontally installed at the low point
. A detailed record shall be kept on the premises or other approved location, for a minimum of 3 years for examination by any representative of the Fire Department ------CORRECT ANSWER---------------Automatic and non automatic sprinkler system records should be kept for How many extra sprinkler heads are needed at all times? ------CORRECT ANSWER---------------A supply of at least six extra sprinkler heads shall be kept available on the premises, to replace promptly any fused or damaged sprinklers. How often should a sprinkler system get pressure tested? ------CORRECT ANSWER---------------At least once every five years, the Fire Department connection or connections for a sprinkler system shall be subjected to a hydrostatic pressure test to demonstrate its suitability for Fire Department use Who’s responsibility is it to maintain the sprinkler system? ------CORRECT ANSWER---------------It shall be the owner's responsibility to maintain the sprinkler system and to determine the individual qualifications and competencies of the COF holder that performs the functions related to inspection, testing and maintenance of such system. Who is the impairment coordinator ------CORRECT ANSWER--------------- The building owner shall assign an impairment coordinator, The impairment
CORROSION-RESISTANT SPRINKLER ------CORRECT ANSWER----------
------ A sprinkler fabricated with corrosion resistant materials, or special coatings to be used in an atmosphere that would corrode standard sprinklers DELUGE VALVE ------CORRECT ANSWER---------------- A water supply control valve intended to be operated by actuation of an automatic detection system that is installed in the same area as the discharge devices. Each deluge valve is intended to be capable of automatic and manual operation DELUGE SPRINKLER SYSTEM ------CORRECT ANSWER---------------A sprinkler system employing open sprinklers that are attached to a piping system that is connected to a water supply through a valve that is opened by the operation of a detection system installed in the same areas as the sprinklers. When this valve opens, water flows into the piping system and discharges from all sprinklers attached. DRY PIPE SPRINKLER SYSTEM ------CORRECT ANSWER---------------A sprinkler system employing automatic sprinklers that are attached to a piping system containing air or nitrogen under pressure. The release of the air or nitrogen,(as from the opening of a sprinkler) results in the water pressure opening a valve known as a dry pipe valve, resulting in the flow of water into the piping system and out of the fused sprinklers heads. DRY SPRINKLER ------CORRECT ANSWER---------------- A sprinkler secured in an extension nipple that has a seal at the inlet to prevent water from entering the nipple until the sprinkler operates. May be configured with an upright pendent or sidewall sprinkler
EARLY SUPPRESSION FAST RESPONSE SPRINKLER (ESFR) ------
CORRECT ANSWER---------------A type of fast response sprinkler that is listed for its capability to provide fire suppression of specific high challenge fire hazards. EXTRA LARGE ORIFICE SPRINKLERS (ELO ------CORRECT ANSWER-- -------------A sprinkler head with and orifice size equal to or greater than 1". This sprinkler is used for protection of high piled storage in warehouses and less pressure is required to achieve a given discharge density. EXTENDED COVERAGE SPRINKLERS ------CORRECT ANSWER---------- ------ A type of spray sprinkler with a maximum area of coverage of 400 square feet (20 foot by 20 foot spacing between sprinklers) for light hazard occupancies to a maximum of 144 square feet (12 foot by 12 foot spacing between sprinklers) for extra hazard occupancies. MASTER PRESSURE REDUCING VALVE ------CORRECT ANSWER------- --------A pressure reducing valve installed to regulate pressures in an entire fire protection system and/or standpipe system zone. PINTLE SCREWS ------CORRECT ANSWER---------------A visual indicating device required for sprinklers manufactured prior to 1999 identifying small orifice sprinklers and large orifice sprinklers where orifice size is different than the nominal thread size of the sprinkler head. PRESSURE CONTROL VALVE ------CORRECT ANSWER---------------A pilot operated pressure reducing valve that may be used with a fire or booster pump designed for the purpose of preventing the incoming water supply pressure from dropping below a set pressure.
Quick Opening Devices ------CORRECT ANSWER---------------These devices are an accelerator and an exhauster. They are both automatically activated when a drop of 2 psi in air pressure is detected in the system. They quickly change the water and air pressure balance in the system preaction sprinkler systems ------CORRECT ANSWER---------------Preaction systems are designed for situations where there is danger of serious water damage. what is the advantage of a preaction system? ------CORRECT ANSWER---- -----------The preaction valve opens sooner because the fire detectors react to heat changes faster than sprinkler heads what devices can be used to trip a pre-action valve? ------CORRECT ANSWER---------------There are three main devices used to trip pre-action valves: 1) devices designed to operate at a fixed temperature; 2) devices designed to operate when the temperature in the room increases a set amount in a given time period (rate-of-rise), and 3) devices combining fixed temperature and rate of rise devices. Preaction System with a Recycling Feature ------CORRECT ANSWER------- --------This system shuts off the water when the fire has been put out or the heat drops. If the fire rekindles or the heat rises sharply, water is discharged again. The system continues cycling on and off as long as the fire persists Combined Dry Pipe and Preaction Systems ------CORRECT ANSWER------ ---------These systems have the basic features of both types of systemsA heat detecting device opens the water control valve and a quick opening
device. The system then fills This book is provided to the public for free by the FDNY. 28 28 with water and operates as a wet pipe system Perforated pipe systems - -----CORRECT ANSWER---------------- 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 non-automatic systems: ------CORRECT ANSWER---------------Open fixed spray nozzles for transformer vaults or other hazardous areas; non-automatic systems: ------CORRECT ANSWER---------------) exterior exposure sprinklers (or window sprinklers) use open sprinkler heads to form an external water curtain on the walls of a building non-automatic systems: ------CORRECT ANSWER---------------Foam supply systems are used for the protection of special hazardous occupancies. GARBAGE COMPACTOR SPRINKLER SYSTEMS ------CORRECT ANSWER---------------Sprinkler systems must be installed to put out fires that start in the compactor chute. what should the CoF holder be responsible for in regard to garbage compacter systems? ------CORRECT ANSWER---------------The Certificate of Fitness holder shall know the location of all sprinkler heads, control valves, supply lines and compactor rooms. A sketch of the entire compactor sprinkler system shall be drawn by the Certificate of Fitness holder
how much work space should be given for a fire department connection? --- ---CORRECT ANSWER---------------A working space of not less than 36 inches in width, 36 inches in depth and 78 inches in height shall be provided and maintained in front of and around wall-mounted and free- standing fire department connections, except as otherwise required or approved. what should each Fire Department connection have? ------CORRECT ANSWER---------------Each connection shall be fitted with a lower check valve. The lower check valve prevents the backflow of the private water supply into the Fire Department connection what position should the automatic ball drip device be? ------CORRECT ANSWER---------------The automatic ball drip device between the lower check valve and the outside Fire Department connection shall be installed in the horizontal position. This ball drip device makes sure that the Fire Department connection is not blocked by water which has frozen within the piping what are fire pumps made to do? ------CORRECT ANSWER---------------. Fire pumps are designed to take the water from a supply source and then discharge the water into the fire protection system under pressure how do water flow alarms work? ------CORRECT ANSWER--------------- Sprinkler systems should have devices and equipment for signaling when water flows through risers or mains supplying the systems
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 water-flow switches shall not be installed to monitor waterflow in dry pipe or pre-action sprinkler systems. Pressure type waterflow ------CORRECT ANSWER---------------- Switches mounted on a trim line. Upon waterflow, the switch transmits an alarm. Pressure type waterflow switches are commonly used to monitor water flow in dry pipe and pre-action 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 This book is provided to the public for free by the FDNY. 35 35 surge. Vane type water flow switches sensitivity can also be adjusted to changing water pressures. Pendent sprinkler heads ------CORRECT ANSWER---------------Pendent sprinkler is designed to be installed in such a way that the water stream is directed downward against the deflector. This kind of sprinkler hangs from above-ceiling pipes and distributes water in a domed or conical pattern
mm glass bulb and the quick response sprinkler has a 3 mm glass bulb. The smaller bulb has a lower response time index what are large drop sprinkler heads ------CORRECT ANSWER--------------- Large drop sprinkler heads are special sprinklers designed to discharge large drops of water from the head. These sprinkler heads are used to break through the strong updrafts of high challenge fires. spare sprinkler heads ------CORRECT ANSWER---------------Under 300 sprinklers six. 301 - 1000 sprinklers twelve. Over 1000 sprinklers twenty four gravity tanks ------CORRECT ANSWER---------------Gravity tanks are used for water storage. They are made of wood, steel, concrete or fiber glass. Gravity tanks are used as a primary or secondary water supply source for sprinkler systems. A gravity tank system delivers water from the tank through the sprinkler system without the use of pumping equipment gravity tank supervision. ------CORRECT ANSWER---------------Electrical supervision devices monitor the water temperature and the water level in the gravity tank. These devices send signals to an approved central station company about the water level and water temperature. T The Centrifugal Pump ------CORRECT ANSWER---------------preferred pump because it is reliable, compact, requires low maintenance, and it can be powered by a variety of drivers including: electric motors, diesel engines, and steam turbines
Principle of Operation ------CORRECT ANSWER---------------The water available to the centrifugal pump must always be under pressure because the pump is not designed to lift water for the supply source. A This book is provided to the public for free by the FDNY. 46 46 water tank can be used if the tank supplies the pump due to gravity The Vertical Turbine Pump ------CORRECT ANSWER---------------A vertical turbine pump is really a modified centrifugal pump that has the capability to draw water from streams, ponds, wells etc. Unlike the standard centrifugal pump, the vertical turbine pump does not need the suction supply to be under pressure for it to operate. Instead it draws the water into the pump by suction. When it reaches the rotating impellers the water pressure and flow are increased and then forcefully discharged into the fire protection system. Pump Activation ------CORRECT ANSWER---------------- Fire, booster or special service pumps supplying fire sprinklers are started automatically when there is a drop in water pressure in the system. Minor drops in water pressure are maintained by a pressure maintenance pump. When the drop of pressure in the system is greater than the capacity of the pressure maintenance pump, the pump is activated. Pressure Maintenance Pumps (Jockey Pumps) ------CORRECT ANSWER-- -------------. These pumps are designed to automatically operate when there is a slight drop in pressure due to leakage in the system. The jockey pump restores the pressure in the fire protection system to the desired level Booster pumps ------CORRECT ANSWER---------------The booster pump is used when the water pressure available at the highest sprinkler head does not meet the demands of the sprinkler system. This pump increases the water pressure in the sprinkler system until it reaches acceptable levels
rod diameter must be 5/8 in ------CORRECT ANSWER---------------10 and 12 pipe diameter in what should be done if there is rust inside of the pressure tank? ------ CORRECT ANSWER---------------Rusting in the tank may require repainting or other repairs. The inside of the tank should be thoroughly scraped, wire brushed and repainted. No foreign materials should be allowed to fall into the sprinkler system. repainting a gravity tank ------CORRECT ANSWER---------------efore the inside of a gravity tank is repainted the surface should be thoroughly dried. All loose paint, rust, scale, and other surface contamination should be removed. The outside of the gravity tank will require local patching. A complete finish coat of paint is needed when the paint has weathered thin. A new coat of paint also improves the appearance of the tank after it has been patched. Painters shall be careful that scrapings or other foreign materials do not fall down the outlet into the sprinkler piping should water leakage from a pump indicate a malfunction? ------CORRECT ANSWER---------------. When the pump is in operation a small water leak on the pump bearings is desirable and should not be considered a malfunction. Additionally, water should discharge from a circulation relief valve (electric pump) or heat exchanger (diesel pump) while the fire pump is operating under a "no-flow" condition. Common Deficiencies ------CORRECT ANSWER---------------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 Factors that may require further investigation ------CORRECT ANSWER----- ----------: 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. what parts may be overlooked during inspections? ------CORRECT ANSWER---------------concealed parts shall not need inspection how to test the water flow alarm on wet pipe systems ------CORRECT ANSWER---------------Testing of the water flow alarm on wet pipe systems shall be performed by opening the inspector's test connection. Where freezing weather conditions or other circumstances prohibits the use of the inspectors test connection, the bypass connections shall be permitted to be used. what concentration of antifreeze is allowed in a system? ------CORRECT ANSWER---------------- Antifreeze concentrations of glycerin shall not exceed 48%. If propylene glycol is used it should not exceed 38%.
2 / 26
9. What does "O.O.S." stand for? OUT OF SERVICE
10. O.O.S systems shall be identi-
fied by placing at Fire
Department connections, sys-
tem control valves, and the Fire
Command Center.
11. A shall be required to
post tags at main control valve
and any sectional valves.
12. shall be posted on
the tag indicating both static
and flow pressures before and
after.
13. Green tags indicate that
14. Green tags will be placed on the
15. Systems partially or fully
out of service shall have a
tag placed on the
main control valve.
16. A disc of 8-9 inches
shall be placed on connections
to indicate the system is fully
out of service.
17. A disc of 8-9 inches
shall be placed on connections
to indicate the system is partial-
ly out of service.
18. The Impairment Coordinator
will notify the car-
Tags
Master Fire Suppression Piping Contrac-
tor
Drain test results.
No impairment was found.
Main Control Valve
Red
White
Blue
Insurance
3 / 26
rier, central station and occu-
pants.
19. Prior to returning a sprin-
kler system to service, the
shall ensure that
necessary tests and inspec-
tions are conducted.
20. Glycerin not greater than
percent or glycol not
greather than percent
shall be used to protect from
freezing.
21. The C.O.F. number and signa-
ture of C.O.F. holder shall be
posted near the.
22. shall be readily
available to any representative
of the Fire Department these
are to be maintained on site for
3 years.
23. Failure to do inspections may
result in of the
C.O.F. and court proceedings.
24. The C.O.F. holder may inspect,
test, and perform routine main-
tenance if they hold the follow-
ing certificates:
25. A can inspect, main-
tain, test, and repair all fire
standpipe and sprinkler sys-
tems.
Impairment Coordinator
50 and 40
Main Control Valve
Records
Revocation
Refrigeration Operating Engineer, High
Pressure Operating Engineer and High
Pressure Operating Engineer.
Master Fire Suppression Piping Contrac-
tor (MFSPC)
