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59 Cards in this Set
- Front
- Back
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To get a fire you need 4 things.. |
Heat Fuel Oxygen Chain reaction. |
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When insulation is turning yellow, what is it turning into? |
Semiconductor |
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What temperature does fire begin? |
At 350c combustion occurs in vapors above fuel... not fuel itself. |
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What is flashover? |
When heat at the top of the room meets heat at the bottom of the room and instantly the whole room goes up. |
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Where do you use AFCI breakers? |
Used in sleeping areas of residential units to prevent our wires from starting fires. New code all residential receptacles. |
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Of the three main classifications of fire what is type A |
A) Ordinary combustible(green) - Used on wood,paper,cloths fire - Pictogram is a garbage can or wood burning. |
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Of the three main classifications of fire, which is type B? |
B) Flammable liquids (Red). - Use on gas, oil fires.... anything found in a barrel. - Pictogram is a gasoline can. |
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Of the three main classifications of fire, what is C? |
C) Energized electrical equipment (Blue). - Think current... often hard to reach. - Pictogram is an electrical cord cap. |
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What are the two specialty classes of fire? |
D) Combustible metals (yellow) Magnesium and sodium (D for ding things). K) Cooking oils (K for kitchen) |
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What happens when you use a class A fire extinguisher on a class D fire? |
You create an exothermic reaction! |
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What fires can you use a dry chemical on? |
A, B and C |
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What fire is Foam good to extinguish? |
Good to class D. |
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What fire could you use water for, and which should you not use it on? |
Good for paper, wood, textiles and solid material fire. Do not use on liquid, electrical or metal fires. |
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Describe how clean agents/CO2 work. |
Removed heat and dissipates oxygen. Advantage, leaves no residue. |
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What are the four stages of a fire in order? |
Stage 1 incipient, Stage 2 smoldering, Stage 3 flame, Stage 4 heat. |
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What is the greatest cause of toaster fires in the USA? |
Pop tarts. |
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Number on cause of dryer fires in North America? |
Dryer sheets. |
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Number on cause of dryer fires in North America? |
Dryer sheets. |
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What is the deadliest stage of fire? |
Smoldering consumes oxygen and replaces a it with toxic gasses. |
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Main purpose of a fire alarm system is to? |
Save lives! Property second. |
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Describe the BC building code. |
- Determines the type of FA system to be used in any building. - Based on size of building and type of occupancy. - Used by fire marshals and designers for the requirement concerning occupancy and alterations of fire protection systems. |
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Who are the underwriters laboratories of Canada? |
ULC Publish the standards for device installation and verification testing. You must see their symbol on all FA devices. |
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What is the BC fire marshal act? |
-Gives them the power to inspect FA installations for compliance. -They are known as the "authority having jurisdiction" or AHJ. |
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What are three main parts to a fire alarm system? |
Initiating device circuits. Control panel. Signaling device circuits. |
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What is the annunciator panel and what is it purpose? |
This is the panel (usually in the front of your building) that has a blueprint of your building along with a variety of lights and displays that indicate where a fire alarm was set off |
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What is an ancillary device? |
Items controlled by the FA system, yet they are no part of it. Dampers Fans (start/stop) Door holders Elevator capture. |
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What are the three types of communications in FA systems? |
Simplex: one direction of data Half duplex: direction of data goes one way at time 1 and back at time 2. Full duplex: direction of data goes both ways all the time. |
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Describe the FA control panel. |
- Accept low current signal from IDCs. - Operates audible and visual signals. - provides "electrical supervision", monitoring field wiring for faults. -Performs other ancillary and auxiliary functions. Must have back up power supply. |
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What's happens in a single stage FA system? |
-Operates all audible and signaling devices & the general alarm rate, which for bells is 120 ppm and strobes is 1 - 3 pulses. -Initiate at the remote annunciator. -Operate the city-tie module (CTM) -Operate all ancillary devices. |
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What's the difference between single stage pull stations and two stage? |
Single stage forgoes right into alarm Two stage goes into alert first then you have I put a key in for alarm or you can reset |
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Definition: Acknowledge |
A deliberate action of the panel operator to confirm that a message or event indicator has been seen. |
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Definition: Address |
Binary/hex/dec number that uniquely identifies a specific device, module or power supply. |
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Definition: Addressable system |
This system uses a digital communications method whereby a control unit (loop controller) can identify a specific initiating device that is ending a signal or send control message to specific devices for output or control purposes. |
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Definition: Addressable device |
Components capable of being uniquely identified by a control unit and which can provide alarm, trouble and output control indications |
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Addressable zone module: |
An addressable device which acts as a transponder for one or more smoke detectors, manual stations or other conventional alarm devices so that an area may be identified by the activation of any one device connected to the addressable zone module |
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A.H.U. : |
Air handling unit. |
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Alarm relay: |
A control panel feature whereby emergency response personnel can view the sequence in which a multiple zone fire has occurred In Order to determine the origin and progress of the fire |
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Alarm silence / reset inhibit. |
A control panel feature that automatically disables the system silence and rest functions for a predetermined period of time. |
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Alarm threshold. |
The temperature, obscuration level, etc. above which an alarm is defined for a particular sensor. |
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A smoke detector is a stand alone device that is capable of detecting and announcing the presence of a fire without the need for a FA panel? T/F |
False. Smoke alarm is, detector requires a FACU |
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Although appearing similar, how is a supervisory condition on a FA panel different than a trouble condition? |
A trouble can be silenced and a supervisory activates the city tie module. |
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What is the capability of a FACU to accommodate additional devices or even remote panels? |
Expandability |
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Name three common ancillary devices. |
Mag door lock. AHU(air handling unit). Staircase pressurization fans. |
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What are three main parts to any fire alarm system? |
Initiating devices, FACU , signaling devices. |
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On a conventional Class B wired FA system that was previously functioning properly, a ground fault occurs in one line of an IDC. This would most likely result in? |
A trouble condition at the FACP. |
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Which sprinkler type has a 'double-interlock' safety feature incorporated into its operation? |
Pre-action. |
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What does t mean when the trouble light for a supervisory FA system comes on? |
A wire has been broken or ground has occurred. |
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When it comes to addressable FA wiring methods, I am the data loop that is wired with for wires, but I only use two of them most the time. Who am I |
DCL R |
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What drawing shows the major control components in a FA system, their locations and the connection wiring required between them? |
Block diagram. |
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Removing the lid cover and operating a flow switch like the one in class will cause what? |
A trouble condition only. |
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When programming an addressable FA CPU, which type of programming is typically the largest and can be building specific? |
Software. |
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Manual addressing of addressable devices comes with the advantage of being able to 'T-tap' devices in anywhere in the zone? T/F |
True |
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When referring to addressable FA systems, which component is responsible for increasing the Baud rate, or the speed of the digital signal? |
Transponders. |
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Automatic addressing of addressable devices comes with the advantage of being able to 'T-tap' devices anywhere in the zone. T/F? |
False. |
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What is the term we use to describe heat detectors that return to their un-tripped state once they cool down? |
Restorable |
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Why do we supervise sprinkler systems with our fire alarm system? |
Their sprinkler heads can replace our heat detectors. |
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When programming an addressable FA CPU, which type of programming makes up the overall framework, common to all FA panels? |
Firmware. |
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This is the main command and control center for FA functions, in which an emergency situation is managed. |
Central alarm control facility. |
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In a two stage fire alarm system, the fire department is called as soon as the first stage begins. T/F |
True. Always called in the first stage. |
