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Fire Inspection And Code Enforcement > 11 Fire Detection And Alarm Systems > Flashcards

11 Fire Detection And Alarm Systems Flashcards

1
Q

This is essentially the brain of the alarm system

A

Fire alarm control panel FACP

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2
Q

Primary electrical power supply for alarm system

A

Buildings main power supply

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3
Q

A secondary power supply must be able to make the fire detection system fully operational within what time of the main power failure

A

30 seconds

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4
Q

Storage battery for alarm system cannot be

A

Dry cell battery

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5
Q

Secondary power supply must be one of the following

A

Storage battery and charger
Generator and 4 hr capacity battery
Multiple generators, one with auto start

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6
Q

Trouble signal must have a different power source than the main power true false

A

True

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7
Q

System component that generates and audible visual or motion signal to alert humans to activation of alarm initiating device

A

Signaling device

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8
Q

Most common signaling decides

A

Audible

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9
Q

Sometimes called detectors, constantly monitor the condition of the atmosphere

A

Automatic alarm initiating devices

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10
Q

Four types of automatic detectors or initiating devices

A

Heat, smoke, fire gas, and flame

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11
Q

One of slowest to respond, but relatively inexpensive, and least prone to false activations

A

Fixed temp heat detectors

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12
Q

Heat detectors operate based one one of these principles

A

Heat causes expansion
It causes melting
It has detectable thermo electric properties

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13
Q

Type of heat detector using two different metals with different expansion rates

A

Bi metallic hear detector

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14
Q

True false. Most bi metallic heat detectors are NOT self resetting

A

False they are

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15
Q

Material that is not a good conductor or insulator and may be used as both

A

Semiconductor

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16
Q

Heat detector that can be used to detect conditions over a wide area

A

Continuous line heat detector

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17
Q

Conductive metal inner core cable sheathed in stainless steel tubing. self restoring. Heat detector

A

Tubing type continuous line

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18
Q

Two wires that are each insulated and bundled within an outer covering. Insulation melts and two wires touch. To restore, fused portion must be removed and replaced.

A

Wire type continuous line heat detector.

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19
Q

Two most significant factors in preventing large fire losses

A

Early detection and proper signaling

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20
Q

Detector designed to operate on the principle that fire is rapidly increase the temperature in a given area

A

Rate of rise heat detector

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21
Q

Compared to fix temperature heat detectors rate of rise respond how

A

At substantially lower temperatures

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22
Q

Typically rate of rise heat detectors are designed to send a signal when the rise in temperature exceeds what temperature per minute

A

12-15°F for minute

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23
Q

True false all rate of rise heat detectors do not automatically reset

A

False they do automatically reset

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24
Q

Heat detector that can monitor large areas. System of metal pneumatic tubing arranged over a wide area of coverage. Tubing acts as a pressurized air chamber as air expands it moves a flexible diaphragm

A

Pneumatic rate of rise line heat detector

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25
Q

Tubing in pneumatic rate of rise line heat detectors is limited to about 1000 feet in length. The tubing should be arranged in rows that are no more than how many feet apart and how many feet from walls

A

30 ft apart and 15 from walls

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26
Q

Heat detector that works on same principle as pneumatic rate of rise line. This detector is self-contained it one unit monitors a specific location

A

Pneumatic rate of rise spot heat detector

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27
Q

This heat detector is designed to be used in areas that are subject to regular temperature changes. Containing outer bimetallic sleeve with a moderate expansion rate. Two bowed struts are inside with a slower expansion rate than the sleeve

A

Rate compensation heat detector

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28
Q

Semiconductor made of substances that have a resistance that varies rapidly and predictably with temperature

A

Thermistor

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29
Q

Detectors with one or more thermistors. They change in electrical resistance when exposed to heat. Can be calibrated to function as a rate of rise approximately 15° per minute or fixed temperature

A

Electronic spot type heat detector

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30
Q

What percentage of fire deaths are attributed to smoke inhalation and not to Burns

A

65%

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31
Q

Preferred type of detector in many types of occupancies

A

Smoke detectors

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32
Q

Sometimes referred to as a physical products of combustion smoke detector

A

Photoelectric smoke detector

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33
Q

This smoke detectors works satisfactorily on all types of fires and usually responds work quickly to smoldering fires

A

Photo electric smoke detector

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34
Q

Smoke detector best suited for living rooms bedrooms and kitchen’s

A

Photoelectric smoke detector

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35
Q

Type of photoelectric detector using a beam of light focused across an area being monitored onto a receiving device

A

Projected beam application

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36
Q

Type of photoelectric detector that is particularly useful in buildings were large area of coverage is desired

A

Projected beam application

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37
Q

Type of smoke detector that contains a sensing chamber consisting of two electrically charged plates one positive and one negative, and radioactive source

A

Ionization smoke detector

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38
Q

Physical process of converting an Adam or molecule into an ion by adding or removing charged particles such as electrons

A

Ionization

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39
Q

What can cause a malfunction of an ionization detector

A

Changes and humidity and atmospheric pressure

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40
Q

Type of smoke detector that work satisfactorily on all types of fires although generally respond more quickly to flaming fires

A

Ionization smoke detector

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41
Q

Smoke detector best suited for rooms that contain highly combustible materials such as cooking grease newspapers flammable liquid paint cleaning solution

A

Ionization smoke detector

42
Q

Type of ionization smoke detector that is designed to continuously monitor small amount of air from the protected area

A

Air sampling smoke detector

43
Q

Type of detector that is a system of pipes in the ceiling of the protected area. A fan in the detector control unit draws air from the building and is then sampled using for electric sensor

A

Air sampling smoke detector

44
Q

Sometimes called a light detector

A

Flame detector

45
Q

Three types of flame detectors

A

UV.
IR.
Both

46
Q

Type of detector that’s fast to respond to fires but also easily tricked I know on fire conditions like welding sunlight

A

Flame detector

47
Q

Infrared flame requires what action of the flame before it sends an alarm

A

Flickering action of the flame

48
Q

Some gasses released by fire may include

A 
Water vapor h20
Carbon dioxide co2
Carbon monoxide 
Hydrogen chloride hcl 
Hydrogen cyanide hcn 
Hydrogen fluoride hf
Hydrogen sulfide h2s
49
Q

Only what gases are released from all carbonaceous material that burns

A

H20
Co2
And co

50
Q

It is only practical for a fire gas detector to monitor levels of what gases

A

CO2. CO

51
Q

A fire gas detector operates faster than a heat detector but not as fast as

A

A smoke detector

52
Q

Devices used to supervise automatic sprinkler systems

A

Temper switches

53
Q

Device for occupants to manually initiate the alarm.

A

Manual alarm initiating devices

Aka pull stations or pull boxes

54
Q

Manual alarm systems depends on occupants for activation and therefore requires

A

The occupancy be occupied.

55
Q

Pull stations are to be mounted on columns or walls so that the operable portion is no less than and no more than how high from floor

A

No less than 3.5’ and no more than 4.5’ from the floor

56
Q

In all cases, travel distances to the pull station should not exceed how many feet

A

200’

57
Q

Pull stations are required how far from every exit

A

Within 5’ of exits

58
Q

Most building codes do not require manual pull stations when what is present

A

Automatic sprinklers wrinkles

59
Q

Pull station that operates after a single motion is made from the user

A

Single action

60
Q

Pull station that requires the operator to perform two steps in order to activate the alarm. Lifting a door the activating switch

A

Double action

61
Q

Type of system installed in an occupancy depends on the following

A 
Level of life hazard
Structural features
Hazard from building contents 
Availability of fire suppression resources. 
State local code requirement. 
Federal regulation.
62
Q

Alarm system that is used to notify occupants of an emergency and direct them in the proper course of action

A

Emergency voice/alarm communications system

63
Q

System that is used to connect fire alarm boxes or protected occupancy directly to the fire department

A

Parallel telephone system

64
Q

Alarm system designed to transmit both a visible and audible alarm only in the immediate premises with no off-site reported

A

Protected premises/local

65
Q

Three basic types of local alarm systems

A

Non-coated local alarm .
Zoned/annunciated alarm.
Addressable alarm system

66
Q

Simplest type of local alarm system. When detector send signal to the control panel all of the alarm signaling devices operate simultaneously

A

Non-coded local alarm

67
Q

An annunciator panel fire alarm control panel or print out should indicate the building floor fire zone or other area that coincides with the location of an operating initiating device. Easier for responders to identify location of activation

A

Zoned/annunciated alarm

68
Q

Of the three types of protected promise/local alarm systems, this type is the most effective and becoming more prevalent

A

Addressable alarm system

69
Q

Type of local alarm system where each initiating device is connected to a specific visible indicator on the alarm control or annunciator panel.

A

Addressable alarm system

70
Q

Fire alarm system that is connected to a municipal fire alarm system transmitted over same manual fire alarm boxes on the street

A

Auxiliary fire alarm

71
Q

Type of auxiliary fire alarm that has its own source of power does not depend on the supply source that powers the entire municipal fire alarm system

A

Local energy system

72
Q

Type of auxiliary fire alarm that is electrically connected to an integral part of the municipal fire alarm system and depends on the system source of electric power

A

Shunt system

73
Q

NFPA 72 allows what detection devices to be used on a shunt system

A

Only manual pull stations and waterflow detection.

74
Q

Alarm system used to protect large commercial and industrial buildings high-rise structures, and groups of commonly owned buildings, such as a college campus or industrial complex in a single location. Each building has its own system all are wired to common receiving point in a separate structure remote from hazard

A

Proprietary alarm system

75
Q

The primary difference between a central station system and a proprietary system is

A

The receiving point for alarms in a central station system is located outside the protected premises and monitored by contracted service

76
Q

A remote receiving system is common in localities that are not served by

A

Central station systems

77
Q

Remote receiving system is like an auxiliary system except

A

They’re attached through nondedicated fire department alarm lines. may use alternative monitor station like PD

78
Q

Supplementary system placed in a facility in addition to other alarm signaling system. Purpose is to provide reliable communication for residents and firefighters

A

Emergency voice/alarm communication

79
Q

Two basic types of emergency voice/alarm communication system

A

One Way system. Two way system

80
Q

Emergency voice communication system that warns building occupants the action is needed and tells them what actions to take

A

One way system

81
Q

Emergency voice alarm communication system that allows people at other locations in the building to communicate with the person at the main control station using either intercom or special telephones

A

Two-way system

82
Q

Dedicated telephone line between each individual alarm box or protect the property and the fire department communication center

A

Parallel telephone system

83
Q

Fire alarm test conducted when systems are installed are commonly called

A

Acceptance tests

84
Q

Periodic testing the fire alarms is often referred to as

A

Service testing

85
Q

What an be used to check restorable heat detectors

A

Heat gun or hair dryer

86
Q

Non restorable pneumatic heat detectors should be tested how

A

Mechanically

87
Q

The actual performance of the alarm system test is the responsibility of

A

The owner occupant. Or fire alarm company

88
Q

Dry cell batteries, or lead acid and primary batteries, should be inspected how often

A

Monthly

89
Q

Nicad and sealed lead acid batteries should be inspected how often

A

Semi annually

90
Q

Reliability of the entire alarm system is entirely dependent on the reliability of what

A

The detection devices

91
Q

When should automatic initiators be inspected.

A

After install
After a fire
recurring schedules

92
Q

A permanent record of all detector and system tests must be kept by the AHJ for how long.

A

At least 5 years

93
Q

Following minimum information should be included in the alarm test file

A 
Date
Detector type
Location
Type of test
Result
94
Q

For a non restorable fixed temp Heat detector, it cannot be tested periodically, and therefore must be tested when

A

15 years after install with 2% of them removed for lab testing

95
Q

Restorable heat detectors should have one detector on each circuit tested how often

A

Semiannual

96
Q

Fusible link detector with replaceable links should be checked by removing link and seeing if contacts close how often

A

Semi annually

97
Q

Replaceable fusible links are recommended for replacement how often

A

Every 5 years

98
Q

Pneumatic heat detectors should be tested with a heating device or pressure pump how often

A

Semi annually

99
Q

Smoke detectors should be tested semi annually and sensitivity testing be performed when

A

After first year of service every two years after that

100
Q

Flame and gas detection devices require testing from trained individuals. Inspectors are only responsible for

A

Witnessing the test.

101
Q

Auxiliary devices a fire alarm panel may control are

A

Hvac fictions
Evac alarms
Fire dampers

Fire Inspection And Code Enforcement (13 decks)

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