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34 Cards in this Set
- Front
- Back
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What is the brain of a Alarm system?
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FACP (Fire Alarm Control PAnel)
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What is the purpose of a alarm system?
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Protect structure and minimize loss due to fire
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Control panels is used for?
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Controls and monitors the fire alarm system
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Types of power?
Primary Secondary |
Primary - buildings main power source.
Secondary - batteries, generators |
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Initiating devices
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Manual = pull stations
Automatic = smoke detectors trigger the alarm Can be hard wired; or radio frequency |
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Notification appliances
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Audible
Visual Textual Tactile |
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Audible
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Horns, bells or speakers
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Visual
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Approved lighting devices, strobes or flashing lights
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Textual
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Text or symbols indicating a fire or Emergency
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Tactile
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Sense of touch indicating fire or Emergency.
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What is a fire command center and what are it's benefits?
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A room where the status of the protection systems is displayed, and controlled, can be staffed or unstaffed and can be accessed by FD personnel.
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What are the types of alarm signaling systems?
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Protected premises
Supervising station |
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Protected premises systems are?
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Non coded alarm= simplest
Zoned/annunciated alarm=general Addressable alarm = specific |
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Supervising station alarm
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Aux alarm= connects to local ECC
Proprietary =remote location, hotels/ industrial Central=contracted central location, can reset alarm Remote= is monitored by local ECC no central station required |
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Initiating devices
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Pull station
Heat detectors Fixed-temperature Rate-of-rise heat detectors |
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Fixed temp heat detectors
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Set temp above normal temps.
Least prone to false activations, but can be the slowest to activate. Types= fusible devices, frangible bulbs, continuous line, bimetallic |
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Fusible link
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Link device that fuses or melts when exposed to heat. Used in sprinklers, fire doors, dampers
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Frangible bulb
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Small glass bulb, designed to break when the liquid reaches the set temp
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Continuous line detector
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Consist of a cable with a conductive metal inner, separated by insulation, when the electrical current increases that triggers the alarm. These types can reset them selfs
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Rate-of-rise detector
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Is sensitive to heat temp. When the temp rises between 12 to 15 degrees per min.
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Types of rate-of-rise heat detectors
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Pneumatic line= rapid increase of temp
Pneumatic spot= same as above but confined to a set location Rate-compensated=used in areas that are regular to temp changes. Slower rate of rise. |
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Smoke detectors
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Photoelectric = quick response, auto reset, mounted on stable surface, can send false alarms if moved
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Why do you have a fire alarm system?
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it alerts occupants that there is an emergency of some sort.
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How does the fire alarm system start?
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initating device?
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What is the most common notification system?
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Sound (audible alarm)
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Strobe lights would be what type of device?
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Visual alert
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What is a manually alarm initiating device?
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pull station
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How does an ionization smoke detector work?
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When smoke enters the ionization chamber, it disrupts this current -- the smoke particles attach to the ions and neutralize them. The smoke detector senses the drop in current between the plates and sets off the horn
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The vertical pipe in any water system?
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A riser (stand pipe)
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What're the three types (fusible link)
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fusible links, frangible bulbs, chemical pellets...
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What does a control valve do?
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turns off the water
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What is the retard chamber and what does it do?
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..
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What type of fire protection system is full of nitrogen
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..
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What type of valve uses a plate attached to the valve stem to identify if the valve is 'OPEN' or 'SHUT'?
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PIV
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