Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Fire: 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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Primary electrical power supply for alarm system

A

Buildings main power supply

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Storage battery for alarm system cannot be

A

Dry cell battery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

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

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

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

A

Signaling device

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Most common signaling decides

A

Audible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Sometimes called detectors, constantly monitor the condition of the atmosphere

A

Automatic alarm initiating devices

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Four types of automatic detectors or initiating devices

A

Heat, smoke, fire gas, and flame

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

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

A

Fixed temp heat detectors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Heat detectors operate based one one of these principles

A

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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

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

A

Bi metallic hear detector

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

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

A

False they are

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

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

A

Semiconductor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

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

A

Continuous line heat detector

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

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

A

Tubing type continuous line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Two most significant factors in preventing large fire losses

A

Early detection and proper signaling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Compared to fix temperature heat detectors rate of rise respond how

A

At substantially lower temperatures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

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

A

False they do automatically reset

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
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

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
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
30 ft apart and 15 from walls
26
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
Pneumatic rate of rise spot heat detector
27
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
Rate compensation heat detector
28
Semiconductor made of substances that have a resistance that varies rapidly and predictably with temperature
Thermistor
29
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
Electronic spot type heat detector
30
What percentage of fire deaths are attributed to smoke inhalation and not to Burns
65%
31
Preferred type of detector in many types of occupancies
Smoke detectors
32
Sometimes referred to as a physical products of combustion smoke detector
Photoelectric smoke detector
33
This smoke detectors works satisfactorily on all types of fires and usually responds work quickly to smoldering fires
Photo electric smoke detector
34
Smoke detector best suited for living rooms bedrooms and kitchen's
Photoelectric smoke detector
35
Type of photoelectric detector using a beam of light focused across an area being monitored onto a receiving device
Projected beam application
36
Type of photoelectric detector that is particularly useful in buildings were large area of coverage is desired
Projected beam application
37
Type of smoke detector that contains a sensing chamber consisting of two electrically charged plates one positive and one negative, and radioactive source
Ionization smoke detector
38
Physical process of converting an Adam or molecule into an ion by adding or removing charged particles such as electrons
Ionization
39
What can cause a malfunction of an ionization detector
Changes and humidity and atmospheric pressure
40
Type of smoke detector that work satisfactorily on all types of fires although generally respond more quickly to flaming fires
Ionization smoke detector
41
Smoke detector best suited for rooms that contain highly combustible materials such as cooking grease newspapers flammable liquid paint cleaning solution
Ionization smoke detector
42
Type of ionization smoke detector that is designed to continuously monitor small amount of air from the protected area
Air sampling smoke detector
43
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
Air sampling smoke detector
44
Sometimes called a light detector
Flame detector
45
Three types of flame detectors
UV. IR. Both
46
Type of detector that's fast to respond to fires but also easily tricked I know on fire conditions like welding sunlight
Flame detector
47
Infrared flame requires what action of the flame before it sends an alarm
Flickering action of the flame
48
Some gasses released by fire may include
``` Water vapor h20 Carbon dioxide co2 Carbon monoxide Hydrogen chloride hcl Hydrogen cyanide hcn Hydrogen fluoride hf Hydrogen sulfide h2s ```
49
Only what gases are released from all carbonaceous material that burns
H20 Co2 And co
50
It is only practical for a fire gas detector to monitor levels of what gases
CO2. CO
51
A fire gas detector operates faster than a heat detector but not as fast as
A smoke detector
52
Devices used to supervise automatic sprinkler systems
Temper switches
53
Device for occupants to manually initiate the alarm.
Manual alarm initiating devices | Aka pull stations or pull boxes
54
Manual alarm systems depends on occupants for activation and therefore requires
The occupancy be occupied.
55
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
No less than 3.5' and no more than 4.5' from the floor
56
In all cases, travel distances to the pull station should not exceed how many feet
200'
57
Pull stations are required how far from every exit
Within 5' of exits
58
Most building codes do not require manual pull stations when what is present
Automatic sprinklers wrinkles
59
Pull station that operates after a single motion is made from the user
Single action
60
Pull station that requires the operator to perform two steps in order to activate the alarm. Lifting a door the activating switch
Double action
61
Type of system installed in an occupancy depends on the following
``` Level of life hazard Structural features Hazard from building contents Availability of fire suppression resources. State local code requirement. Federal regulation. ```
62
Alarm system that is used to notify occupants of an emergency and direct them in the proper course of action
Emergency voice/alarm communications system
63
System that is used to connect fire alarm boxes or protected occupancy directly to the fire department
Parallel telephone system
64
Alarm system designed to transmit both a visible and audible alarm only in the immediate premises with no off-site reported
Protected premises/local
65
Three basic types of local alarm systems
Non-coated local alarm . Zoned/annunciated alarm. Addressable alarm system
66
Simplest type of local alarm system. When detector send signal to the control panel all of the alarm signaling devices operate simultaneously
Non-coded local alarm
67
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
Zoned/annunciated alarm
68
Of the three types of protected promise/local alarm systems, this type is the most effective and becoming more prevalent
Addressable alarm system
69
Type of local alarm system where each initiating device is connected to a specific visible indicator on the alarm control or annunciator panel.
Addressable alarm system
70
Fire alarm system that is connected to a municipal fire alarm system transmitted over same manual fire alarm boxes on the street
Auxiliary fire alarm
71
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
Local energy system
72
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
Shunt system
73
NFPA 72 allows what detection devices to be used on a shunt system
Only manual pull stations and waterflow detection.
74
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
Proprietary alarm system
75
The primary difference between a central station system and a proprietary system is
The receiving point for alarms in a central station system is located outside the protected premises and monitored by contracted service
76
A remote receiving system is common in localities that are not served by
Central station systems
77
Remote receiving system is like an auxiliary system except
They're attached through nondedicated fire department alarm lines. may use alternative monitor station like PD
78
Supplementary system placed in a facility in addition to other alarm signaling system. Purpose is to provide reliable communication for residents and firefighters
Emergency voice/alarm communication
79
Two basic types of emergency voice/alarm communication system
One Way system. Two way system
80
Emergency voice communication system that warns building occupants the action is needed and tells them what actions to take
One way system
81
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
Two-way system
82
Dedicated telephone line between each individual alarm box or protect the property and the fire department communication center
Parallel telephone system
83
Fire alarm test conducted when systems are installed are commonly called
Acceptance tests
84
Periodic testing the fire alarms is often referred to as
Service testing
85
What an be used to check restorable heat detectors
Heat gun or hair dryer
86
Non restorable pneumatic heat detectors should be tested how
Mechanically
87
The actual performance of the alarm system test is the responsibility of
The owner occupant. Or fire alarm company
88
Dry cell batteries, or lead acid and primary batteries, should be inspected how often
Monthly
89
Nicad and sealed lead acid batteries should be inspected how often
Semi annually
90
Reliability of the entire alarm system is entirely dependent on the reliability of what
The detection devices
91
When should automatic initiators be inspected.
After install After a fire recurring schedules
92
A permanent record of all detector and system tests must be kept by the AHJ for how long.
At least 5 years
93
Following minimum information should be included in the alarm test file
``` Date Detector type Location Type of test Result ```
94
For a non restorable fixed temp Heat detector, it cannot be tested periodically, and therefore must be tested when
15 years after install with 2% of them removed for lab testing
95
Restorable heat detectors should have one detector on each circuit tested how often
Semiannual
96
Fusible link detector with replaceable links should be checked by removing link and seeing if contacts close how often
Semi annually
97
Replaceable fusible links are recommended for replacement how often
Every 5 years
98
Pneumatic heat detectors should be tested with a heating device or pressure pump how often
Semi annually
99
Smoke detectors should be tested semi annually and sensitivity testing be performed when
After first year of service every two years after that
100
Flame and gas detection devices require testing from trained individuals. Inspectors are only responsible for
Witnessing the test.
101
Auxiliary devices a fire alarm panel may control are
Hvac fictions Evac alarms Fire dampers

Fire: Fire Inspection And Code Enforcement (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions