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Automation > Fire Alarm > Flashcards

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?

A

Yes

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
Q

Which type of smoke detector would cause less nuisance ringing near a kitchen?

A

Photoelectric

26
Q

What are the two major types of heat detectors?

A

Rate of Rise and Fixed temperature

27
Q

What must a rate of Rise detector sense in order to go off?

A

A 15 degree/minute increase in temperature

28
Q

What is the standard fire alarm system sound called? Describe it

A

Temporal 3. Three half second tones, a pause, and then repeat

29
Q

What are two types of sprinkler systems?

A

Wet and dry

30
Q

What are the three sprinkler tree devices?

A

Gate valve tamper switch
Flow switch
Low pressure switch

Automation (2 decks)

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