Fire Alarm Flashcards
1
Q
To get a fire you need what 4 things
A
Oxygen
Fuel
Heat
Chain reaction
2
Q
An electrical fire needs ____________ fuel, which could be ___________ on _____________.
A
Organic
Plastic on wires
3
Q
Wire insulation is ____________ based
A
Carbon
4
Q
When a wires insulation turns yellow it is turning into a _____________
A
Semi conductor
5
Q
In electrical fires at _________⁰C fire begins, combustion occurs in _____________ above the fuel, not the fuel itself.
A
350
Vapours
6
Q
Pool fires would be considered as?
A
Liquids that burn
7
Q
Explain flashover in regards to fires
A
When the heat at the top of the room 1300⁰C meats the heat at the bottom of the room 200⁰C and instantly the whole room goes up
8
Q
Explain the function of an afci
A
Used in sleeping areas of residential occupancies to prevent the wires from starting fires
9
Q
What are the 3 common types of fire classifications
A
Ordinary combustion
Flammable liquids
Energized electrical equipment
10
Q
What are the two types of specialty fire classifications
A
Combustable metals such as sodium and magnesium
Cooking oils
11
Q
What are the letter classifications for each type of fire classifications and which do they represent
A
Class A ordinary fire
Class B flammable liquids
Class C electrical equipment
Class D combustable metals
Class K is cooking oils
12
Q
What is the acronym for a fire extinguisher and what does each letter represent
A
P pull
A aim
S squeeze
S sweep
13
Q
Dry chemical agent prevents the reaction between __________ and _________. What fires is it good for.
A
Heat and fuel
Good for ABC
14
Q
What extinguishing agent takes oxygen from the equation and prevents flashback and is good for class D
A
Foam
15
Q
What extinguishing agent is used in most city hydrants at high pressure
A
Water
16
Q
What extinguishing agent removes heat and dissipates oxygen and leaves no residue (advantage)
A
Co²
17
Q
______________ are designed to detect same characteristics of each stage
A
Fire detectors
18
Q
What are the four distinct fire stages
A
Incipient
Smouldering
Flame
Heat
19
Q
What fire stages has no visible smoke, and very little heat. A significant amount of invisible combustion particles are created
A
Incipient
20
Q
What fire stages is the slowest
A
Incipient
21
Q
Best detector for the incipient stage
A
Smoke detector or ionization
22
Q
What fire stages has developed smoke but no flame
Not much heat but more than before
A
Smouldering stage
23
Q
What is the best detector for the smouldering stage
A
Photoelectric
24
Q
A smoulder stage could last for _________
A
Hours
25
What fire stages has visible flames and often less or no smoke
Flame stage
26
What is the best detector for the flame stage
Flame detector or fire eyeb
27
What fire stages has large amounts of heat and flames are present
Smoke and toxic gasses are also prevalent.
Heat stage
28
The transition for stages _____ to _____ is very fast
3 to 4
29
Best detector for the heat stage
Heat detector
30
What is the deadliest fire stage and why
Stage 2 smoulder. It consumes oxygen and replaced it with toxic gasses
31
Normal air is about ____ % oxygen
21
32
Oxygen level _______ exposure time is indefinite
Symptoms: loss of coordination, thinking becomes difficult, shortness of breath
17-21%
33
Oxygen level ______
Exposure time 30 minutes
Symptoms: rapid pulse and dizziness
14-17%
34
Oxygen level _______
Exposure time 5 minutes
Symptoms:unconscious
9%
35
Oxygen level ____
Exposure time 1-2 minutes
Symptoms: death
6%
36
What is the main purpose of a fire alarm system
To save lives
37
What is the second purpose of a fire alarm system
Property protection
38
In regards to main players who determines the type of fire alarm system to be used in any building
Bc building code
39
Fire alarm type is based on what
Size of building and type of occupancy
40
In regards to main players who is responsible to publish the standards for device installation and verification testing
ULC
Underwriters laboratories of Canada
41
You must have a _______ device on all FA devices
ULC
42
Who is known as the authority having jurisdiction
Bc fire Marshall act
43
In regards to main players what gives them the power to inspect FA installations for compliance
Bc fire Marshall act
44
In regards to main players what is used by fire marshals and designers for the requirements concerning occupancy and alterations of fire protection systems
Bc fire code
45
What are 3 main parts of a fire alarm system
Initiated device circuits
Control panel
Signalling device circuits
46
What are other parts of a fire alarm system other than the 3 main parts
Annunciator panel
Ancillary devices
47
Should have a __________________ at every main entrance
Annunciator panel
48
Dampers
Fans
Door holders
Elevator capture are what kind of devices
Ancillary
49
A com system with one way communication is called a
Simplex
50
A com system that can communicate either way but can only have one side at a time
Half duplex
51
A com system that can communicate both directions all the time is a
Full duplex
52
Fa panel accepts _________________ from idcs
Low current signals
53
Fa control panels operate ______________ and ___________& signals.
Audible and visual
54
Fa pabels provide _____________________ monitoring field wiring for faults.
Electrical supervision
55
A fa panel performs other _______________ and _________________ functions.
Ancillary and auxillary
56
A FA panel must have a ___________________
Back up power supply
57
What are the characteristics of a single stage FA system
Operate all audible and signalling devices
Indicate at the remote annunciator
Operate the city tie module
Operate all ancillary devices
58
What is the ppm of a bell
120ppm
59
What is the general stroberate
1-3 pulses/s
60
What are the characteristics of a two stage systems first stage
Operate all audible and signalling devices
Indicate at the remote annunciator
Operate the city tie module (ctm)
61
What is the alert rate ppm
20
62
Advantage of two stage systems
1st stage allows trained personnel to investigate the alarm
If after 5 minutes or a second device alarm automatic stage 2 or evacuation
63
What are the characteristics of a type 1 FA system
Non indicating
Non zoned
General alarm
64
Characteristics of a type 2 FA system
Indicating
Zoned
General alarm
65
Characteristics of a type 3 FA system
Indicating
Zoned
Coded
General alarm
66
Characteristics of a type 4 FA system
Indicating
Zoned
Alert/alarm
67
Characteristics of a type 5 FA system
Indicating
Zoned
Coded
Alert/alarm
68
_____________ is a location that is watched by an initiating device in a circuit or an area
A zone
69
A zone must be _____________ and less than ____ stories
Under 2000m²
3
70
Hospitals must have _______________ of individual zones
100's
71
Nursing homes have ___ zones per floor or wing
2
72
Buildings with zones must have ____________ and _______________
Annunciators
Secondary EM power
73
What does idc stand for
Initiated device circuits
74
What does sdc stand for
Signaling device circuits
75
All _________ including pull stations are shown as NO contact which causes a short circuit and triggers the alarm
IDCs
76
Pull stations must be what colour
Bright red
77
Pull stations can be _______________ or ______________
Flush mount
Surface
78
Pull stations must be near every ____________________.
Entrance and exit
79
Pull stations must be found in ____________________ rooms (+60 people)
Large assembly rooms
80
Pull stations must be found ____________ in long hallways
Midway
81
What is the distance that makes a long hallways
200'
82
Pull stations height must be
1.05-1.15m Aff
83
What is the oldest form of protection that is considered a property protector
Heat detectors
84
_________ detectors are responsive to changes in ambient temperature
Heat
85
_______ detectors are the least expensive and slowest in the detecting a fire
Heat
86
What are the types of heat detectors
Fixed temperature restorable
Fixed temperature non restorable
Rate of rise
87
A bi metal strip is used to close a circuit when increase in heat for which detector
Fixed temperature restorable
88
Heat will cause a solder pot to melt releasing a plunger in contacts for a one time use is what kind of detector
Fixed temperature non restorable
89
Common temps for a non restorable fixed heat detector
58⁰c 88⁰c
90
In a rate of rise, temperature near the devices needs to rise by _____ in ______ minutes(s)
9⁰c
1 minute
91
What kind of detector usually has a fixed temperature element for backup
Rate of rise
92
What is good electrical practice in regards to location of heat detectors
To place heat detectors instead of smoke in environments that would be described as hostile
93
Flexible detector can be placed around items requiring fire protection is what kind of detector
Line type
94
Two twisted steel wires carry a small supervisor current in a loop style is make kind of detector
Line type
95
When the fire breaks the polymer melts and conducts a short circuit is what kind of detector
Line type
96
In line type detection _________ is initiated however most cases __________ also occurs simultaneously
Alarm
Suppression
97
______________ detection is used mostly in industrial applications
Line type
98
What like type is more rigid than other types
Thermister core
99
What detector has a negative temperature coefficient
Thermister core line type
100
____________ core when heated allows more current to flow
Thermister
101
When smoke detectors are activated the smoke spread can be controlled by the panel in what four ways
Closing dampers and ducts
Activating exhaust fans
Energized positive pressure fans in stairwells
Release magnetic door holders
102
What are the two types of smoke detectors
Ionization
Photo electric
103
Ionization smoke detectors contains a small amount of ________________ material. Which ionizes an ___________ between two plates
Radioactive material
Airgap
104
_________________ detectors will allow a small amount of current to flow which is good
Ionization
105
When fire molecules enter they neutralize the ions and less current will flow between the plates is what kind of detector
Ionization
106
What is the fastest detector
Ionization
107
Light scattering and light obstruction is what kind of detector
Photo electric
108
Smoke detectors require a _________ to annunciate an alarm
FAcu
109
Smoke _______ will have its own audible ability
Alarms
110
What kind of detector would you use if you had high rooms, atriums etc
Projected beam
111
________________ detectors are good for places where maintenance is hard, corrosive or highly turbulent
Projected beam
112
Beam detectors typically have two parts the ____________ and ____________
Transmitter
Receiver
113
______________ detector is not fooled by other sources of IR
Beam
114
A ____________ smoke detector is mounted to watch air inside of air ducts transporting air between floors
Duct
115
The purpose of a duct smoke detector is
To shutdown the HVAC when smoke is present
116
Duct smoke detectors must be used in _______________ with other forms of ________________
Conjunction
Protection
117
Why can't duct smoke detectors be relied on by themselves
HVAC systems can be shut off
Often fresh air is mixed with recirculated air
Clogged air filters are common
118
What detector is usually able to see a naked flame
Uv/ir or fire eye
119
What is the hz of a flames signature flicker
5-30hz
120
What detector is the only one that gives 3 stage protection
Uv/Ir (fire eye)
121
A ___________ detector is a line of sight device
Uv/ir (fire eye)
122
____________ detectors once activated always trigger suppreson systems as they are property detectors
Uv/ir (fire eye)
123
Fuels like naptha, butane and propane burn with a blue colour and are picked up by the ______ detector
UV
124
Gasoline, jet fuel and diesel burn with a red hue and this is picked up by the _____ detector
IR
125
SDCs are ___________ sensitive
Polarity
126
What does dip in dip switch stand for
Dual inline package
127
Horns have a range of ______
200'
128
________ are used in commercial and industrial locations where high ambient noise is likely
Horns
129
Horns can play ___________ or ____________ signals
Coded
Sustained
130
Horns approximately about _______V
And __________mA
120v
180mA
131
__________4 are not a replacement for Bells
Strobes
132
________________ act requires these flashing lights for the hearing impaired
96 disability act
133
Strobes must be installed so they are _______________ to all people in the room
Visible
134
Every ___ dB is sound doubling
3
135
What are the four main types of sprinkler systems
Wet pipe
Dry pipe
Pre action
Deluge
136
Which sprinkler system has the fastest response time
Wet type
137
When a flow switch is engaged what would that signal to the FACU
Alarm
138
When a tamper switch is opened what would it signal to the FACU
Trouble
139
What is used to boost the water pressure on the sprinkler side of the check valve
Jockey pump
140
What can be installed to reduce false alarms due to water hammering
Jockey pump
141
__________ pumps typically have their own controls and are supervised by the FACU
Jockey
142
What type of sprinkler is used in areas where freezing is likely to occur
Dry type
143
What system of sprinklers have a interlocked system
Pre action
144
What kind of sprinkler system is used to reduce damage from accidental discharge
Pre action
145
Which sprinkler system is designed for high hazard areas
Deluge
146
Which sprinkler system has open heads which when activated floods the whole area
Deluge
147
Which sprinkler system has unpressurized pipe. Sprinkler heads are open.
Deluge
148
Minimum height for a fire bell
1.8m
149
Maximum height permitted for a annunciator panel
2.4m
150
Maximum height for a control panel
2.4m
151
Maximum height for an EOL
1.8m
152
Institutional buildings like nursing homes require a minimum of ______ zones per floor
2
153
Where are end of line resistors usually located
In the field after the last device
154
In regards to trouble shooting IDCs what could be the problems of you read a short
Pull station on
Faulty smoke or heat
Incorrect wiring
155
In regards to troubleshooting IDCs what could be the causes of your meter reads open
Missing EOL
Missing shorting strip on I type detectors
Loose or broken wiring behind device
156
In regards to troubleshooting SDCs what if you read infinite both ways
Open before the first bell
157
In regards to troubleshooting SDCs of you read low ohms both ways means
At least one bell is connected wrong
158
In regards to troubleshooting SDCs if you read less than 500 ohms both ways means
One or more bells is backwards
159
In regards to SDCs is your meter a dead short or 0 ohms it is likely a
Pinched or stripped wire do not energized
160
In regards to addressing explain what polling is
The FACU asks
Who are you
What is your status
