Sprinkler Systems COPY Flashcards
What are the two types of smoke detectors?
Photoelectric and Ionization
What are the three devices used to identify and alert the possibility of fire conditions?
Smoke Detectors
Heat Detectors
Flame Detector
What is the most common type of initiating detecting device?
Smoke Detector
What type of smoke detector detects smaller amounts of particles?
Ionization
What type of smoke detector will detect larger products of combustion?
Photoelectric
What type of smoke detector will uses radiation?
Ionization
What happens when smoke particles enters the chamber of an ionization smoke detector?
They neutralize the charged particles and interrupt the current flow.
Which type of smoke detector react more quickly in detecting a fast burning fire?
Ionization
Which type of smoke detector react more quickly in detecting a slow smoldering fire?
photoelectric
What does a photoelectric smoke detector use to detect particles of smoke?
A light beam and a photocell.
How does a photoelectric smoke detector detect the presence of smoke?
When smoke enters it reflects some of the light given off of the light beam on to the photocell, thereby activating an alarm.
What type of smoke detector is used to protect churches, atriums, airport terminals and such
A projected beam detector
Which detection device is less prone to nuisance alarms? Smoke Detector or Heat detector?
Heat Detector
What device can provide property protection but cannot provide reliable life safety protection?
Heat detector
What device would be used in smoky, dusty environments where other smoke detectors would not work as well?
Heat detectors
What are the two ways heat detectors are designed to operate?
- Fixed temperature
- React to a rapid increase in pressure.
What would be the typical temperature that a heat detector would be set at in a office building or light hazard occupancy?
138°
What would be a typical increase in temperature for a heat detector to react too?
12° temperature change over one minute
Which type of heat detector needs to be replaced after it has been initiated?
Fixed temperature heat detector
What type of heat detector is generally self restoring even after it has been initiated?
Rate of Rise Heat detector
What type of heat detector has a line that is strung across large areas such as an autorium and will react to any temperature change along the line?
A line heat detector.
What type of detector uses ultraviolet light waves to detect the possibility of fire conditions?
Fame Detector
What type of detector is often found in in places such as air craft hangers, fuel loading racks or certain areas where early detection is essential?
Flame detector
What detector responds to fire conditions the fastest?
Flame Detector
What is a disadvantage to a flame detector?
non fire conditions such as welding, sunlight or other sources of bright lights may trigger a false alarm
What type of detector is often used in areas that hold valuable contents or sensitive equipment?
Air Sampling detectors
What type of an alarm occurs when an individual deliberately activates a fire alarm?
Malicious alarm
What type of an alarm is due to an environmental condition and is not an real emergency?
Nuisance alarm
What is the sound pattern called that is required by NFPA 72 as a fire warning.
T3 or temporal 3 pattern
What type of fire alarm system provides no information to the type or location of the initiating devices; consequently the entire building must be searched
non-coded systems
What is the most common and least expensive sprinkler system?
Wet Pipe Sprinkler system
What is the standard sprinkler head size?
1/2”
What does a dry pipe sprinkler system used to keep the clapper valve closed?
Pressurized air
When is a preaction sprinkler system used?
when the accidental discharge of water would cause excessive damage to expensive equipment, documents or artifacts
What type of sprinkler system is going to allow water to flow from all the sprinkler heads at once?
Deluge Spinkler System
Where would be an example of where you would find a deluge sprinkler system?
Aircraft hangers or industrial warehouses where fire suppression is critical or LIQUID PROPANE loading stations
What system has the water self contained and does not rely on the water main?
Water Mist System
Where might you find a water mist system?
Places of High value products and equipment such as computer rooms, archive rooms and historic buildings
What is the primary objective of a residential sprinkler system?
To protect the egress routes so occupants can evacuate
A Class _____ standpipe is designed for use by the fire dept personnel only.
Class 1
What size of hose connection is found on a class 1 sprinkler system?
2.5 inch connection
What class of stand pipe is designed for building occupants?
Class II
What size of hose is often found in a Class 2 stand pipe system?
1.5 inch hose and nozzle
Which class of stand pipes are often found in refiners and military bases?
Class II
What is a Class III standpipe system?
Has features of both Class I and Class II standpipe systems allows for FDC as well as occupants use
What type of Standpipe system does not have a permanent connection to a water supply so the FDC must be used to pump water into the system.
Manual Dry Standpipe system
What is an automatic dry standpipe system?
one that is connected to the water supply but water is kept out of the piping system until needed.
What type of suppression system is often in areas where computers or sensitive equipment is used?
Gaseous Suppression system
Fire- gas detectors will trigger an alarm slighter faster than a heat detector but not as fast quickly as a ________.
Smoke detector
How does a Gaseous agent system suppress fires?
One of two ways either by reducing the oxygen level in the room or by chemically inhibit the growth of fire.
What do passive smoke control systems use to help influence the spread of smoke?
The use the building features such as fire rated walls or automatic doors.
What does Active smoke control systems use to help influence and control the spread of smoke?
Mechanical systems that use control methods such as creating pressure differences.
What is the temperature range for Black color code or orange/ red glass bulb color?
135 to 170°
What is the temperature rating for a white color code with yellow or green glass bulb color?
175° to 225°
What is the temperature rating for a blue code with blue glass bulb?
250° to 300°
What is the temperature rating for a red code with purple glass bulb color?
325° to 375°
What is the temperature rating for a green code with black bulb?
400° to 475°
What is the temperature rating for a Orange code with Black
> 500°
What is the color code for 135 to 175°?
Uncolored or black
What is the color code for 175 to 225°?
White
What is the color code for 250° to 300°?
Blue
What is the color code for 325 to 375° ?
Red
What is the color code for 400 to 475 ° ?
Green
____ sprinklers react five to ten times faster than traditional sprinklers.
Early Suppression Fast Response ESFR Sprinkler system
What are the three most common sprinkler release mechanisms?
Fusible Link
Glass Bulb
Chemical Pellet
What is the name of the sprinkler part that is attached to the frame and creates the water discharge pattern?
Deflectors
What type of sprinkler position is often found in dry systems and designed to deflect the spray of water downward
Upright sprinkler heads
What type of sprinkler mount is typically used in storage facilities?
In Rack
What type of sprinkler system is the simplest and generally requires the least amount of maintenance?
Wet Sprinkler system
What type of sprinkler system is vital to prevent water damage?
Preaction Sprinkler system
What type of sprinkler system has water at all times in it.
Automatic wet
What type of sprinkler system cannot be used in cold environments?
Automatic Wet
What is an automatic Dry sprinkler system?
One that contains air under pressure instead of water.
Water is admitted to the system through the opening of a hose valve
use in cold enviroments
