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TFD BC > Vehicle Fires > Flashcards

Vehicle Fires Flashcards

1
Q

According to the power point, vehicle fires and deaths have overall been increasing or decreasing?

A

Decreasing

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2
Q

True or false…

Technological advancements in automobile safety for passengers has made it safer for firefighters as well

A

False

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3
Q

The powerpoint lists 12 modern automobile hazards. Try to list them all

A 
Plastic components                  
Energy Absorbing bumpers     
Suspension systems                 
Safety/restrain systems           
Fuel Systems                             
Hybrid vehicles
Electrical Systems
Drive Lines
Wheels and tires 
Cast aluminum/alloy
Magnesium
Human stupidity
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4
Q

Most vehicle interiors are made up of __% plastic

A

95%

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5
Q

Increased use of plastic means increased intensity of ____

A

Burning

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6
Q

Plastic components contribute to greater BTU production. Examples range from _____ to _____

A

750,000 to 2 million

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7
Q

The main type of plastic in cars is ____

A

Polyurethane

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8
Q

Another type of plastic used on cars is _____

A

Enduraflex

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9
Q

Enduraflex produces what type of gas?

A

Hydrogen cyanide

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10
Q

Under fire conditions, plastics produce what 3 deadly vapors?

A

Carbon monoxide
Hydrogen cyanide
Hydrogen chloride

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11
Q

Energy absorbing bumpers were produced and required by the DOT on all passenger cars in what year?

A

1973

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12
Q

True or False

The original design of energy absorbing bumpers was not a threat to firefighters

A

True

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13
Q

What kind of design do today’s bumpers have that can explode with deadly results?

A

Hydraulic piston design

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14
Q

What are the 4 types of suspensions listed on the powerpoint?

A

Standard “leaf spring and shock”
Iso-strut “Macpherson”
Air suspension
Owner modified lifting or lowering

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15
Q

Which of the 4 types of suspensions is listed as “potential extreme threat”?

A

Iso-strut “Macpherson”

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16
Q

Which of the 4 types of suspensions is listed as “mostly commercial with no threat”?

A

Air suspension

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17
Q

Why are owner modified lifted or lowered vehicles dangerous?

A

Bigger struts. Higher off the ground so shrapnel has a potential to reach you easier

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18
Q

What is a pressure vessel?

A

Any vessel that contains a fluid, gas, or air

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19
Q

What are the 6 examples of pressure vessels listed on the power point?

A 
Bumpers
Shocks
Struts
Drive shafts
Tires
A/C system
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20
Q

Hatchback and hood struts have a ____ ____ filled piston have a potential for ____

A

Hydraulic fluid

Exploding

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21
Q

What causes air bags to rapidly fill up with air?

A

Sodium azide

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22
Q

If a car crashes and the airbag does not go off, can the airbag still deploy after the battery is detached?

A

Yes

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23
Q

Why is rapid cooling of an airbag area important during a fire?

A

Sodium azide is flammable and heat can make it explode

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24
Q

To be safe, you should stay out of ____ of undeployed bags

A

Range

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25
Q

Sodium azide can do what 4 thing to the human body?

A

Can be fatal if absorbed through the skin
Could be fatal if swallowed
Can cause respiratory, skin, and eye irritation
Can cause CNS problems

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26
Q

In many cases with sodium azide, people will complain of ____, ____, and ____ irritation

A

Skin, tracheal, and eye irritation

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27
Q

What are the NFPA ratings for sodium azide?

A

Health 4
Fire 1
Reactivity 3

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28
Q

The powerpoint lists 9 fuels for vehicles

Try to list them all

A 
Gasoline
Diesel
Propane
Ethanol
Methanol
CNG (compressed natural gas)
LNG (liquid natural gas)
Multiple batteries for hybrid
Hydrogen
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29
Q

Does gasoline in it’s liquid state burn?

A

NO

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30
Q

What is the vapor density of gasoline?

A

3-4 times heavier than air

31
Q

What is the specific gravity of gasoline?

A

.8

32
Q

What is the flash point of gasoline?

A

Negative 45 degrees

33
Q

What is the autoignition temperature of gasoline?

A

536 degrees

34
Q

1 gallon of gasoline has the same amount of potential energy as ___ pounds of nitroglycerin or ____ pounds of dynamite

A

85

54

35
Q

What is the vapor density of propane?

A

1.6

36
Q

What is the LEL and UEL of propane?

A

2.1-9.5

37
Q

BLEVE potential of propane-

Expands ___ times its volume out of container

A

270

38
Q

What does BLEVE stand for?

A

Boiling Liquid Evaporating Vapor Explosion

39
Q

Compressed natural gas is mostly ____

A

Methane

40
Q

What is the LEL and UEL of CNG?

A

5-15%

41
Q

What is the vapor density of CNG?

A

.6

42
Q

One good thing about CNG and Hydrogen is that they disperse ____

A

Easily

43
Q

What PSI is CNG stored at?

A

2400-4000 psi and is dispensed to the vehicle at that same psi

44
Q

What is the LEL and UEL of hydrogen?

A

4-75%

45
Q

What is the vapor density of hydrogen?

A

.0899

46
Q

What psi is hydrogen stored at in vehicles?

A

5,000 AND 10,000 psi and is dispensed to the vehicle at the same psi

47
Q

What is the typical capacity of a fuel tank?

A

10-40 gallons

48
Q

Newer fuel tanks are made out of….

A

High-density polyethelene plastic

49
Q

Fuel tanks have the potential for rapid….

A

Release of product

50
Q

What three “vehicles” have different fuels, tanks, and storage items?

A

Campers, motor homes, and “lunch wagons”

What da H E double hockey stick is a lunch wagon?

51
Q

What is the typical psi in a fuel system?

A

40 psi

52
Q

Fuel systems are closed and that means that pressure ____

A

Builds

53
Q

Propane tanks are constructed of ____

A

Steel

54
Q

CNG tanks are constructed of what 3 materials?

A

Steel
Aluminum
Fiberglass

55
Q

What do fuel systems have to prevent catastrophic failure?

A

Pressure relief mechanisms

56
Q

How many manual shutoffs to the fuel system do CNG vehicles have?

A

2

57
Q

Hydrogen tanks are made out of…

A

Carbon fiber epoxy resin

58
Q

What is the normal operating temperature of a catalytic converter?
What temperature can one that is malfunctioning reach?

A

1000 degrees

2500 degrees

59
Q

Drive lines can potentially____

A

Explode

60
Q

What are 2 hazards that have to do with tires and rims?

A 
Split rims (can be deadly)
Exploding tires
61
Q

What kind of acid is in batteries?

A

Sulfuric acid

62
Q

Can batteries explode?

A

YES

63
Q

What are the 3 types of vehicles listed for “dual batteries”?

A

4WDs
RVs
Diesel

64
Q

Which battery cable do you disconnect first?

A

Negative

65
Q

What color is the negative battery cable?

A

Black

66
Q

What may give an indication of the contents of the vehicle?

A

Placards
Labels
Business name

67
Q

If you see weird fire or smoke during a vehicle fire, don’t be afraid to…

A

Call for HazMat

68
Q

What 5 things are you observing during a vehicle fire size up?

A 
Color of smoke
Color of fire/flames
Location of fire
What fire is impinging on
Exposures
69
Q

What are the 7 tools listed on the powerpoint that you will need for a vehicle fire?

A 
1 3/4 hoseline
Irons
Pry bar
Dry chemical extinguisher
Hand tools and/or cutters
Flash light
Wheel chocks
70
Q

What is the ideal and safe angle to approach a vehicle fire?

A

45 degrees

71
Q

If you must approach from an unsafe angle, what must you keep in mind?

A

Explosions

Bumpers

72
Q

The fire apparatus should be placed at least ___ feet away from the vehicle fire

A

75 feet

73
Q

What are some of the first things you should cool in a vehicle fire?

A

Tires
Struts
Bumpers

74
Q

If a fire cause looks suspicious, what should you do?

A

Use as little water as possible to conserve evidence

TFD BC (26 decks)

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