Fire Alarm Flashcards

1
Q

What is the primary purpose of a fire alarm system

A

To save lives

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2
Q

What is the secondary purpose of a fire alarm system?

A

To protect property and initiate fire fighting

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3
Q

What are the four stages of a fire

A

Incipient stage
Smoldering stage
Flame stage
Heat stage

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4
Q

What is a class A fire

A

Ordinary combustibles (wood, paper, rags)

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5
Q

What is a class B fire?

A

Flammable liquids and gases (natural gas, gasoline)

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6
Q

What is a class C fire?

A

Electrical (short circuits, overloaded cables)

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7
Q

What is a class D fire

A

Combustible metals (sodium, titanium, magnesium, plutonium)

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8
Q

What is a class K fire

A

A cooking fire. Liquids used in food preparation

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9
Q

What are the three components of a fire triangle?

A

Heat, fuel, and oxygen

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10
Q

What are the four conditions of a fire alarm system

A

Normal
Trouble
Fire alarm
Supervisory Alarm

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11
Q

What are the two types of fire alarm systems?

A

Single stage system
Two stage system

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12
Q

How much time must elapse before a two stage system will automatically initiate the second stage

A

5 minutes

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13
Q

What does FACP stand for?

A

Fire alarm control panel

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14
Q

What are the three types of fire alarm systems?

A

Conventional
Multiplex
Addressable intelligent

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15
Q

What does an isolation module do?

A

Isolates a portion of the DCL circuit

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16
Q

What are control/relay modules used for?

A

Used to control ancillary devices

17
Q

How many devices do most addressable systems allow per DCL?

A

Approximately 100

18
Q

What does DCL stand for?

A

Data Communication Link

19
Q

What does SLC stand for?

A

Signalling Line Circuit

20
Q

Is a DCL polarity sensitive?

21
Q

What are some examples of Alarm Initiating Devices?

A

Detectors, pull stations, flow switch

22
Q

What are some examples of notification devices?

A

Bells, horns, strobes

23
Q

What are some examples of ancillary devices?

A

Door mags, HVAC, elevators,

24
Q

What are two types of smoke detectors

A

Photoelectric and ionization

25
Which type of smoke detector would cause less nuisance ringing near a kitchen?
Photoelectric
26
What are the two major types of heat detectors?
Rate of Rise and Fixed temperature
27
What must a rate of Rise detector sense in order to go off?
A 15 degree/minute increase in temperature
28
What is the standard fire alarm system sound called? Describe it
Temporal 3. Three half second tones, a pause, and then repeat
29
What are two types of sprinkler systems?
Wet and dry
30
What are the three sprinkler tree devices?
Gate valve tamper switch Flow switch Low pressure switch