THE __ IS RESPONSIBLE TO MAINTAIN SPRINKLER SYS. AND TO DETERMINE QUALIFICATIONS.
OWNER
RECORDS OF ALL INSPECTIONS AND MX SHALL BE MAINTAINED ON PREMISES FOR A MIN. OF __ YEARS.
3
THE BUILDING OWNER SHALL ASSIGN A(N) __ TO COMPLY WITH REQUIREMENTS.
IMPAIRMENT COORDINATOR
REGULAR MX AND MINOR REPAIRS NOT AFFECTING MORE THAN __ FLOOR(S) ARE CONSIDERED PLANNED REMOVAL FROM SERVICE.
1
SHUTDOWNS AFFECTING MORE THAN _ FLOOR(S) ARE CONSIDERED UNPLANNED OUT OF SERVICE CONDITIONS.
1
NOTIFICATION TO FDNY IS NOT REQUIRED, PROVIDED SYSTEM IS RETURNED TO SERVICE WITHIN __ HOURS.
8
FOR UNPLANNED REMOVAL FROM SERVICE, THE COF HOLDER SHALL IMMEDIATELY REPORT CONDITION TO THE _ AND THE FIRE DEPT.
OWNER OF THE BUILDING
IF A MINOR DEFECT IS OBSERVED, IT SHALL BE CORRECTED WITHIN _ DAYS OR IT WILL BE CONSIDERED AN IMPAIRMENT.
30
WHAT DOES “OOS” STAND FOR?
OUT OF SERVICE
OOS SYSTEMS SHALL BE IDENTIFIED BY PLACING __ AT FIRE DEPT. CONNECTIONS, SYS. CONTROL VALVES, AND FIRE COMMAND CENTER
TAGS
A _ SHALL BE REQUIRED TO POST TAGS AT MAIN CONTROL VALVE AND ANY SECTIONAL VALVES.
MASTER FIRE SUPPRESSION PIPING CONTRACTOR
__ SHALL BE POSTED ON THE TAG INDICATING BOTH STATIC AND FLOW PRESSURES BEFORE AND AFTER.
DRAIN TEST RESULTS
GREEN TAGS INDICATE THAT __.
NO IMPAIRMENT WAS FOUND
GREEN TAGS WILL BE PLACED ON THE __.
MAIN CONTROL VALVE
SYSTEMS PARTIALLY OR FULLY OUT OF SERVICE SHALL HAVE A __ TAG PLACED ON THE MAIN CONTROL VALVE.
RED
A _ DISC OF 8-9 INCHES SHALL BE PLACED ON CONNECTIONS TO INDICATE THE SYSTEM IS FULLY OUT OF SERVICE.
WHITE
A __ DISC OF 8-9 INCHES SHALL BE PLACED ON CONNECTIONS TO INDICATE THE SYSTEM IS PARTIALLY OUT OF SERVICE.
BLUE
THE IMPAIRMENT COORDINATOR WILL NOTIFY THE _ CARRIER, CENTRAL STATION AND OCCUPANTS.
INSURANCE
PRIOR TO RETURNING A SYS. TO SERVICE, THE _ SHALL ENSURE THAT NECESSARY TESTS AND INSPECTIONS ARE CONDUCTED.
IMPAIRMENT COORDINATOR
GLYCERIN NOT GREATER THAN _ PERCENT OR GLYCOL NOT GREATHER THAN PERCENT SHALL BE USED TO PROTECT FROM FREEZING.
50, 40
THE COF NUMBER AND SIGNATURE OF COF HOLDER SHALL BE POSTED NEAR THE __.
MAIN CONTROL VALVE
__ SHALL BE READILY AVAILABLE TO ANY REPRESENTATIVE OF THE FIRE DEPT. THESE ARE TO BE MAINTAINED ON SITE FOR 3 YEARS.
RECORDS
FAILURE TO MAKE INSPECTIONS MAY RESULT IN __ OF THE COF AND COURT PROCEEDINGS.
REVOCATION
THE COF HOLDER MAY INSPECT, TEST, AND PERFORM ROUTINE MX IF THEY HOLD THE FOLLOWING CERTS:
REFRIGERATION OPERATING ENGINEER, HIGH PRESSURE OPERATING ENGINEER, AND NYS HIGH PRESSURE OPERATING ENGINEER.
A __ CAN INSPECT, MAINTAIN, TEST, AND REPAIR ALL FIRE STANDPIPE AND SPRINKLER SYSTEMS.
MASTER FIRE SUPPRESSION PIPING CONTRACTOR (MFSPC)
A MASTER PLUMBER (MP) WITH COF IS LIMITED TO RESIDENTIAL OCCUPANCIES WITH _ SPRINKLER HEADS OR LESS.
30
ABOUT __ PERCENT OF FIRES ARE EXTINGUISHED OR CONTROLLED WHEN SPRINKLERS ARE INSTALLED.
96
WET PIPE SYSTEMS HAVE WATER AT A MINIMUM TEMP. OF _ TO PREVENT THE SYSTEM FROM FREEZING.
40 FAHRENHEIT
__ VALVES ARE NO LONGER PERMITTED TO BE INSTALLED.
COLD WEATHER
__ SYSTEMS ARE INSTALLED WHERE A WET PIPE SYSTEM CANNOT BE HEATED TO PREVENT FREEZING.
DRY PIPE
THE DROP IN __ CAUSES A SPECIAL DRY PIPE VALVE TO OPEN.
AIR PRESSURE
IN BUILDINGS WHERE LIFE HAZARD IS HIGH (SCHOOLS, HOSPITALS) THE ALARM IS TRANSMITTED DIRECTLY TO THE _.
FIRE DEPARTMENT
DRY PIPE VALVES ARE OF A __ DESIGN.
CLAPPER
DRY PIPE VALVES ARE USUALLY SET AT __ PSI ABOVE THE NORMAL TRIP LEVEL.
15-20
AN ACCELERATOR AND EXHAUSTER ARE USED TO _______THE TIME TO ALLOW WATER INTO THE SYSTEM.
REDUCE
BOTH ACCLERATOR AND EXHAUSTER ARE ACTIVATED WHEN A DROP OF _ PSI IS DETECTED IN THE SYSTEM.
2
IN A PREACTION SYSTEM, THE _ IS OPENED BEFORE THE SPRINKLER HEADS.
PREACTION VALVE
PREACTION SYSTEM ALARMS ARE GIVEN AS SOON AS THE _ IS OPENED.
VALVE
THREE DEVICES USED TO TRIP PREACTION VALVES ARE FIXED TEMP DEVICES, RATE DEVICES, AND _ DEVICES.
COMBINATION
THE _ FEATURE SHUTS OFF WATER WHEN THE FIRE IS EXTINGUISHED AND TURNS ON AGAIN IF THE FIRE REKINDLES.
RECYCLING
THE __ IN THE DELUGE SYSTEM ARE OPEN AT ALL TIMES.
SPRINKLER HEADS
_ SYSTEMS ARE USUALLY FOUND IN BASEMENTS OR OTHER DIFFICULT TO REACH AREAS.
PERFORATED PIPE
__ NOZZLES ARE USED FOR TRANSFORMER VAULTS AND OTHER HAZARDOUS AREAS.
OPEN-FIXED
EXTERIOR EXPOSURE SPRINKLERS USE OPEN SPRINKLER HEADS TO FORM A _ ON THE WALL OF A BUILDING.
WATER CURTAIN
_ SYSTEMS ARE USED FOR THE PROTECTION OF SPECIAL HAZARDOUS OCCUPANCIES.
FOAM SUPPLY
THE COF HOLDER SHALL KNOW THE LOCATION OF ALL SPRINKLER HEADS, CONTROL VALVES, SUPPLY LINES AND _ ROOMS.
COMPACTOR
A SIGN INDICATING THE LOCATION OF ALL _ SHALL BE KEPT IN THE COMPACTOR ROOM.
CONTROL VALVES
ALL INDICATING VALVES IN THE COMPACTOR SPRINKLER SYSTEM SHALL BE __ OPEN.
SEALED
A MINIMUM OF _ EXTRA SPRINKLER HEADS WITH THE APPROPRIATE WRENCHES SHALL BE AVAILABLE TO REPLACED DAMAGED ONES
6
THE COF HOLDER SHALL CONDUCT AN INSPECTION OF THE ENTIRE SPRINKLER SYSTEM AT LEAST __.
ONCE A MONTH
AUTOMATIC BALL DRIP DEVICES SHALL BE INSTALLED IN THE _ POSITION.
HORIZONTAL
IF THE SPRINKLER SYS. IS SUPPLIED FROM PUBLIC WATER MAIN, THE CONTROL VALVE SIGN MAY READ ____.
“SHUTOFF FOR SPRINKLER SYS. LOCATED 6 FEET FROM THIS SIGN”
GATE VALVES OF THE NON-INDICATING TYPE ARE CALLED __.
CURB VALVES
IN AN OUTSIDE STEM AND YOLK VALVE (OS&Y), VALVE POSITION IS INDICATED BY THE POSITION OF THE __.
STEM
ON A POST INDICATOR VALVE (PIV), THE POSITION OF THE VALVE IS SHOWN THROUGH A _.
TELLTALE
FDNY CONNECTIONS TO AUTOMATIC SPRINKLER SYSTEMS SHALL BE PAINTED _.
GREEN
FDNY CONNECTIONS TO NON-AUTOMATIC SPRINKLER SYSTEMS SHALL BE PAINTED _.
SILVER
FDNY CONNECTIONS TO STANDPIPE SYSTEMS SHALL BE PAINTED __.
RED
FDNY CONNECTIONS TO A COMBINED STANDPIPE/SPRINKLER SYSTEM SHALL BE PAINTED _.
YELLOW
FDNY CONNECTIONS SHALL BE FITTED WITH A LOWER CHECK VALVE. THIS WILL PREVENT __ OF WATER.
BACKFLOW
PRESSURE TANKS SHOULD BE KEPT FULL AND BE MAINTAINED AT OR ABOVE PSI.
2/3, 75
_ ARE DESIGNED TO TAKE WATER FROM A SUPPLY AND DISCHARGE IT UNDER PRESSURE.
FIRE PUMPS
AUTOMATIC FIRE PUMPS ARE USUALLY NEEDED WHERE A _ MAY OCCUR IMMEDIATELY.
HIGH WATER DEMAND
WATER ALARMS SERVE AS FIRE EXTINGUISHING SYSTEMS AND SERVE AS A(N) _.
AUTOMATIC FIRE ALARM.
SPRINKLER SYSTEMS ARE REQUIRED TO HAVE AN APPROVED MOTOR GONG, BELL, HORN, OR __.
SIREN
SPRINKLERS MANUFACTURED AFTER 1/1/2000 ARE REQUIRED TO HAVE A _.
SPRINKLER IDENTIFICATION NUMBER (SIN)
_ SPRINKLERS HAVE BEEN RECALLED.
CYCLING
SPRINKLER HEADS EXPOSED TO _ CONDITIONS ARE OFTEN COVERED WITH A COAT OF WAX, OR LEAD.
CORROSIVE
AT A DISTANCE OF 4 FEET BELOW THE DEFLECTOR, THE SPRAY PATTERN COVERS A DIAMETER OF _ FEET WHEN DISCHARGING AT 15 GPM.
16
LARGE DROP SPRINKLER HEADS ARE USED TO BREAK THROUGH THE STRONG __ OF HIGH CHALLENGE FIRES.
UPDRAFTS
IF A FIRE HAS BEEN COMPLETELY EXTINGUISHED, THE __ OR THEIR REPRESENTATIVE MAY CLOSE THE CONTROL VALVE.
BUILDING OWNER
BUILD UP OF FOREIGN MATERIALS ON SPRINKLER HEADS IS COMMONLY CALLED _.
LOADING
SPARE SPRINKLERS SHALL BE KEPT AT THE FACILITY WHEN THE TEMPERATURE DOES NOT EXCEED _.
100 DEGREES FAHRENHEIT
FACILITIES WITH LESS THAN 300 SPRINKLERS REQUIRE __ SPARES TO BE AVAILABLE.
6
FACILITIES WITH 301-1000 SPRINKLERS REQUIRE __ SPARES TO BE AVAILABLE.
12
FACILITIES WITH OVER 1000 SPRINKLERS REQUIRE __ SPARES TO BE AVAILABLE.
24
PRESSURE TANK TEMPERATURES SHALL BE KEPT AT OR ABOVE _.
40 DEGREES FAHRENHEIT
THE MAXIMUM GROSS CAPACITY OF PRESSURE TANKS IS _ GALLONS.
9000
PRIMARY WATER PRESSURE TANKS SHALL BE EQUIPPED WITH TWO _.
HIGH AND LOW ALARM SYSTEMS
PRESSURE TANKS MAY BE SUPERVISED BY AN APPROVED __ COMPANY WHICH MONITORS THE ENTIRE SPRINKLER SYSTEM.
CENTRAL STATION
__ TANKS ARE MADE OF WOOD, STEEL, OR CONCRETE.
GRAVITY
GRAVITY TANKS SHOULD BE AT LEAST __ FEET ABOVE THE HIGHEST LINE OF SPRINKLER HEADS.
25
FOR EVERY 1 FOOT THE TANK IS ABOVE THE DISCHARGE OUTLET _ PSI OF PRESSURE IS GENERATED.
0.433
AUTOMATIC FILL PUMPS FILL THE TANK AT A RATE OF _ GPM OR MORE.
65
THE _ TURN ON THE FILL PUMP WHEN THE WATER IN THE TANK IS TOO LOW.
FLOATS
SOME METHODS TO PREVENT ICE INSIDE A GRAVITY TANK ARE _.
CIRCULATED HOT WATER, STEAM, STEAM COILS, AND SUN HEAT
THE MAIN REASON A SPRINKLER SYS. SUPPLIED BY A GRAVITY TANK FAILS IS __.
NOT ENOUGH WATER IN THE TANK
THE __ PUMP IS THE STANDARD PUMP CURRENTLY USED IN FIRE PROTECTION SYSTEMS.
CENTRIFUGAL
THE WATER AVAILABLE TO THE CENTRIFUGAL PUMP MUST ALWAYS BE _.
UNDER PRESSURE
CENTRIFUGAL PUMPS ARE CAPABLE OF DISCHARGING WATER FROM _ TO __ GPM.
25, 5000
A VERTICAL TURBINE PUMP IS USED TO DRAW WATER FROM A WELL TO _.
FILL A STORAGE TANK.
MUD, GRAVEL, AND LEAVES MAY CAUSE DAMAGE TO THE _.
PUMP
WHEN __ ARE INSTALLED, THEY ARE USUALLY USED IN COMBINATION WITH A GRAVITY TANK OR A PRESSURE TANK.
MANUALLY ACTIVATED PUMPS
COF HOLDERS SHOULD MANUALLY ACTIVATE THE FIRE PUMPS IAW _.
MANUFACTURER INSTRUCTIONS
REMOTE PUSHBUTTONS ARE USED TO __ THE PUMP ONLY.
START
PRESSURE MAINTENANCE PUMPS (JOCKEY PUMPS) ARE USED TO __ PRESSURE IN THE SYSTEM.
RESTORE
THE _ PUMP INCREASES PRESSURE TO AN ACCEPTABLE LEVEL.
BOOSTER
THE TEMPERATURE IN THE PUMP ROOM SHOULD BE MAINTAINED ABOVE __.
40 DEGREES FAHRENHEIT
MISSING OR DEFECTIVE PIPE HANGERS CAN CAUSE THE SYSTEM TO FAIL DUE TO __.
PIPE RUPTURE
__ SHALL NOT BE USED TO FASTEN THE SYSTEM OR BUILDING ATTACHMENTS TO THE STRUCTURE.
NAILS
VISUAL INSPECTION OF HANGING AND BRACING IS NOT REQUIRED FOR PIPING CONCEALED ABOVE __.
CEILINGS
__ LINES ARE DIRECTLY CONNECTED TO SPRINKLER HEADS.
BRANCH
_ ARE ABLE TO SUPPLY FEED MAINS OR CROSS MAINS DIRECTLY.
RISERS
STANDARD STEEL PIPE WITH DIAMETERS OF 1-1/4 INCH REQUIRE HANGERS TO BE PLACED __ FEET APART.
12
FOR PIPE OTHER THAN 1-1/4, THE MAXIMUM DISTANCE BETWEEN HANGERS IS __ FEET.
15
CPVC PIPE HANGER SPACE FOR 3/4 INCH PIPE IS _.
5 FT 6 IN
CPVC PIPE HANGER SPACE FOR 3 INCH PIPE IS __ FEET.
10
THE DISTANCE FROM A HANGER ASSEMBLY TO THE CENTERLINE OF A SPRINKLER HEAD SHALL NOT BE LESS THAN __.
3 INCHES
SYSTEMS ABOVE _ PSI HAVE DIFFERENT SUPPORT REQUIREMENTS.
100
NYC BUILDING CODE REQUIRES SWAY BRACING FOR SPRINKLER SYS. INSTALLED AFTER __.
1998
MINIMUM SIZE HANGER RODS FOR PIPE DIAMETER UP TO 4 INCHES: _.
3/8
MINIMUM SIZE HANGER RODS FOR PIPE DIAMETER OF 5-8 INCHES: __.
1/2
MINIMUM SIZE HANGER RODS FOR PIPE DIAMETER OF 10-12 INCHES: _.
5/8
THE INSIDE OF PRESSURE TANKS SHALL BE INSPECTED CAREFULLY EVERY _ YEARS.
3
WHEN INSPECTING PRESSURE TANKS, THE COMPRESSOR SHALL BE CAPABLE OF PRESSURIZING TO _ PSI WITHIN 3 HOURS OR LESS.
75
PUMPS SHOULD BE ACTIVATED EACH WEEK AND RUN FOR _ MINUTES IN ACCORDANCE TO THE MANUFACTURERS SPECIFICATIONS.
10
INSTALLATIONS THAT DON’T APPEAR CORRECT INCLUDE SPRINKLER HEADS LOCATED MORE THAN _ INCHES BELOW THE CEILING.
22
THE PRESENCE OF OBSTRUCTIONS IN SPRINKLER SYSTEMS SHALL BE CHECKED EVERY _ YEARS.
FIVE
WHEN TUBERCULES AND SLIME ARE FOUND THEY SHALL BE TESTED FOR _.
MICROBIOLOGICALLY INFLUENCED CORROSION
fire department connection
normally on exterior of building… FDNY can pump supplemental water into the sprinkler system, standpipe, or other system furnishing water for fire extinguishment to supplement existing water supplies.
system control valve
valve controlling flow to water-based fire protection systems.
fire command center
Designated room or area in a structure where the status of the fire detection, alarm, and protection systems is displayed and the systems can be manually controlled.
Fire pump, automatic standpipe.
A fire pump located at or below street level that supplies the lower 300 feet (91.4 m) of a standpipe system or a combined standpipe and sprinkler system.
tags
on closed section valves serving affected areas: area affected, brief description, occupancy classification, c of f number, estimated time until operational
Green tag
no impairment found in entire system- main control valve
red tag
place on main control valve if FULLY out of service… put sprinkler company name, date of removal from service and anticipated time to operational
blue disk
partially out of service- on all fire department connections
water storage tank
Collects cooled water
OS & Y valve
indicating type of control valve used for fire sprinkler system
deluge valve
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. INTENDED USE IS MANUAL AND AUTO
deluge 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 IT OPENS, water flows into the piping system and discharges from all sprinklers attached.
Early suppresion fast response sprinklers
fast response sprinkler that is listed for its capability to provide fire suppression of specific high challenge fire hazards
extra large orifice sprinklers
= or > 1 inch less pressure to achieve a given discharge density
extended coverage sprinkler
400 max square feet discharge 20 foot by 20 foot spacing between sprinklers
fire pump
a provider of liquid flow and pressure dedicated to fire protection. A fire pump is a part of a fire sprinklers system water supply and can be powered by electric, diesel or steam. connected to public water source or tank. provides higher pressure to sprinkler system
Glass bulb sprinkler
operated by heat breaking a glass bulb filled with a non freezing liquid with diameters that vary form 3 mm for quick response to 5 mm for standard response
hose valve
valve to additional hose connection
hydraulic placard
sign attached to a hydraulically calculated sprinkler system indicating the design density, required gallons per minute and pressure for the system to operate properly
hydraulically calculated systems
method of sizing auto sprinkler piping using a prescribed amount of water to be distributed over a specific area.
impairment coordinator
in charge of safety during out of service systems
intermediate level sprinkler
sprinkler equipped with integral shields to protect the operating elemtn form discharge from sprinklers installed at higher elevations
large orifice sprinkler
sprinkler head with orifice size equal or greater than 3/4 and less than 1 inch
listed device
A fire protection component that has been tested to perform under parameters specified for its use by a nationally recognized testing agency. Underwriter’s Laboratory (UL) and Factory Mutual (FM) are the two most common.
Master Pressure Reducing Valve
A pressure reducing valve installed to regulate pressures in an entire fire protection system and/or standpipe system zone.
Main Drain
The primary drain connection located on the system riser and also utilized as a flow test connection.
Microbiologically Influenced Corrosion (MIC)
Corrosion caused by the presence of microbes in the water supply that over time attack the interior of metallic piping and cause leaks, pitting, and blockages.
Conventional Sprinkler
A sprinkler that directs 40% to 60% of the water initially in a downward direction and is designed to be installed with the deflector in either the upright or pendent position.
Pendent Sprinkler
A sprinkler designed to be installed in such a way that the water stream is directed downward against the deflector.
Pintle Screws
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.
Pipe Schedule Systems
A method of sizing piping based upon the number of sprinkler heads and the occupancy of the protected area.
Preaction Sprinkler System
A sprinkler system employing automatic sprinklers that are attached to a piping system that contains air that may or may not be under pressure, with a supplemental detection system installed in the same areas as the sprinklers.
Pressure Control Valve
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.
Pressure-Reducing Valve
A valve designed for the purpose of reducing the downstream water pressure under both flowing (residual) and nonflowing (static) conditions.
Pressure Relief Valve
A valve designed for the purpose of releasing excess air or water pressure from the Fire Protection Piping System.
Pressure Tank
A tank using air pressure to supplying water for water-based fire protection systems. Tank contents to be maintained at one third air to two thirds water.
Quick Response Sprinkler Head
A sprinkler having a fusible link with a response time index (RTI) of 50 or less.
Recessed Sprinkler
A sprinkler in which all or part of the body, other than the shank thread, is mounted above the ceiling.
Residential Sprinkler
A type of fast response sprinkler that has been specifically tested to enhance survivability in the room of fire origin and listed for use in dwelling units.
Response Time Index (RTI)
A measurement of the thermal sensitivity of a sprinkler head expressed in (meters-seconds) 1/2.
Supervisory signal
A signal indicating the need for action or the use of such device in connection with the supervision of fire alarm systems or the maintenance features of related systems.
Small orifice sprinklers
A sprinkler head with and orifice size smaller than 1⁄2″
Solder Link Sprinkler
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
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
A sprinkler having a fusible link with a response time index (RTI) of 80 or more.
Supervisory signal-initiating device
An initiating device, such as a valve supervisory switch,that triggers a supervisory signal.
Testing
A procedure used to determine the status of a system as intended by conducting 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 tests follow up on the original acceptance test at intervals specified in the appropriate chapter of NFPA #25, 2002 edition.
Upright Sprinkler
A sprinkler designed to be installed in such a way that the water spray is directed upwards against the deflector.
Water Spray Fixed System
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
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.
DELUGE SPRINKLER SYSTEMS
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
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 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
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
used as a main water supply source for sprinkler systems. They may also be used in combination with 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
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
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
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.
The Centrifugal Pump
The centrifugal fire pump is the standard pump currently used in fire protection systems. This is the preferred pump because it is reliable, compact, requires low maintenance, and it can be powered by a variety of drivers including: electric motors, internal combustion engines, and steam turbines
The Vertical Turbine Pump
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. The water is drawn into the pump. When it reaches the rotating impellers the water pressure is increased and then forcefully discharged into the fire protection system.
Pump Activation
A fire pump can be started automatically or manually. The pump can be started automatically by an electric controller or an engine controller. These controllers activate the pump when there is a drop of water pressure or water flow in the fire protection system.
Pressure Maintenance Pumps (Jockey Pumps)
Pressure maintenance pumps,
Some times referred to as jockey, or makeup pumps, are often found on sprinkler systems. These pumps are designed to automatically operate when there is a slight drop in pressure due to the leakage in the system or a pressure surge. The jockey pump restores the pressure in the fire protection system to the desired level. When the drop of pressure in the system greater than the capacity of the jockey pump the fire pump is activated.
Booster pumps/special service pumps
Booster pumps are sometimes used in sprinkler systems. They small pumps with limited power are usually located in the basement or taking suction from gravity tanks. The booster pump is used when the water pressure available at the highest sprinkler head does not quite meet the needs of the sprinkler system. This small pump increases the water pressure in the sprinkler system until it reaches acceptable levels. The booster pump should not be confused with the fire pump or the jockey pump.
Sprinkler system piping
Branch lines are directly connected to sprinkler heads.
Cross mains or loop mains are directly connected to branch lines. Feed mains are directly connected to cross mains or loop mains. Risers are able to supply feed mains or cross mains directly.
rti
response time index
full flow test
performed every 5 years:
- open main valve to let debris escape, then close
- system air a nd water pressrue recorded.
- relieve pressure by opening inspector test valve (use stopwatch)
- at dry pipe valve note aire pressure which valve trips an note time
- at inspectors test note time that water flows steadily.
- test terminated when clean water flows (shit valve)
compare to past tests
fire hydrant
A valve connection on a water supply system having one or more outlets and that is used to supply hose and fire department pumps with water.
Control valve
A valve controlling flow to water base fire protection system. Control valve do not include hose valves
Fire pump locations
the fire pump should be located in a place that is noncombustible or fire resistant. has to be heated to a minimum of 40 degrees Fahrenheit.
Gravity tanks should be how high above the highest sprinkler head?
25 feet.
What are the three methods to heating a gravity tank
Hot water circulation
Steam is discharged directly into the tank
steam coils are placed inside the tanks
Heat from the sun is used
Automatic fill pumps supply the water to most gravity tanks. The pumps fill the tank at a rate of __ gpm
65
Centrifugal pump can pump at a rate of
25 to 5000 gallons per minute
what is a fire hydrant?
A valve connection on a water supply system having one or more outlets and that is used to supply hose and fire department connections with water.
What is the purpose of gate valves?
A valve controlling flow to water based fire protection systems. Is used to isolate,shut off, and open sprinkler systems.