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Bullitens > FF OPS BULL Vehicle Fires > Flashcards

FF OPS BULL Vehicle Fires Flashcards

1
Q

Most accidental vehicle fires are caused by…

A

either electrical or fuel system malfucntions.

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2
Q

How may an electrical system malfunction be solved in an emergency?

A

by either turning off the ignition source or d/c all applicable batteries.

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3
Q

What are the major components of the fuel system of a vehicle?

A

fuel injector and lines, catalytic converter, and fuel evaporation system (which includes the fuel tank).

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4
Q

What is the catalytic converter designed to do?

A

reduce hydrocarbon and carbon monoxide emissions before they reach the atmosphere?

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5
Q

What vehicle component is designed to reduce hydrocarbon emissions?

A

the catalytic converter

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6
Q

What vehicle component is designed to reduce CO emissions?

A

the catalytic converter

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7
Q

What is the normal internal temperature range for a catalytic converter?

A

1300 to 1600F

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8
Q

What is the normal external temperature range for a catalytic converter?

A

about 1000F

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9
Q

When may higher than normal catalytic converter temperatures be reached?

A

when the engine is in poor operating condition (especially if fuel/air mixture is too rich), under severe load, or has several misfiring cylinders.

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10
Q

A rich fuel/air mixture can cause a catalytic converter to exceed _______ F.

A

1600

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11
Q

What is the fuel evaporation control system designed to do?

A

prevent the loss of fuel vapors from the carburetor and fuel tank due to evaporation, and prevent fuel expansion overflow.

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12
Q

What does the evaporation control system consist of?

A

a closed fuel tank, a holding canister, and a series of lines and line connectors

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13
Q

What is the fuel tank cap vacuum relief set to?

A

approximately 3/8th of a psi.

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14
Q

What is the fuel tank cap pressure relief set to?

A

1psi

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15
Q

What should be considered appropriate from both a tactical and a safety standpoint?

A

the act of cooling the tank with a second hose

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16
Q

Why will F/Fs initially respond wearing full PPE including SCBA?

A

due the evolving technology and materials involved in vehicle fires.

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17
Q

How far from a vehicle must apparatus be positioned?

A

50’+ to the front (100’ is preferred) or 100’+ to the rear. Adjust accordingly if the vehicle is known to have a fuel tank in front.

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18
Q

What is the purpose of approaching a vehicle fire from a 45 degree angle?

A

to reduce the chance of apparatus or personnel being caught by an unintentional fuel tank rupture.

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19
Q

What will be used to provide maximum protection to personnel and effectively extinguish an extensively involved vehicle?

A

Two (2) 1 1/2 inch lines.

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20
Q

What will the two lines used at an extensively involved vehicle fire do?

A

1st line: pax compartment; 2nd line, in a wider fog pattern, under car to fuel tank

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21
Q

When should consideration be given to immediately calling for a second engine company?

A

When distance from a water source is an issue, or if, u/a there is a large pax vehicle that is well involved.

22
Q

What may removing the fuel cap do?

A

Allow superheated gasoline vapors to excape to an oxygen rich environment and ignite.

23
Q

Some airbags are inflated with compressed gases pressurized between

A

1400 and 3000 psi

24
Q

Where can airbag inflation cylinders be found?

A

in the firewall, B-post, and C-post.

25
Q

What temperature causes the rupturing of a protective disk and venting argon?

A

480 degreees

26
Q

What temperature causes the autoignition of the initiator component?

A

750 degrees

27
Q

Some airbags are designed to auto-inflate at repeated and prolonged temperatures above _____?

A

250 degrees

28
Q

In case of leaking fuel tank….

A

…request the Haz Mat unit.

29
Q

Under what circumstances should the gas tank be punctured to increase the fuel flow?

A

Under NO circumstances

30
Q

What are the major electrical systems of the EV?

A

the charging mechanism, the traction (propulsion) battery, the controller, and the electric traction (propulsion) motor

31
Q

At an EV fire, a firefighter standing on the ground (does/does not) complete a circuit when a stream of water hits an EV?

A

Does not

32
Q

When is a F/F at risk of electrical shock at an EV fire?

A

When touching certain components.

33
Q

What kind of EV fluids might be encountered at an emergency incident?

A

Potassium Hydroxide (KOH), Marlotherm, and Sulfuric Acid

34
Q

What is a telltale sign of an EV?

A

The International Orange associated with the wiring system that provides traction power. It usually bundled and runs along the lower frame or beneath the seats

35
Q

How long does it take for an EV system to be completely dumped?

A

5 to 10 minutes

36
Q

What is it imperative to do immediately upon arrival at an accident or vehicle fire?

A

The power to an electric or hybrid vehicle must be cut.

37
Q

If an EV fire involves the batteries and is minor in nature, consider utilizing…

A

… a type D dry chemical extinguisher.

38
Q

What should be used to dilute toxic smoke from a burning sodium and sulfur battery?

A

a water fog

39
Q

What should be used for information for exposure to substances on board an EV?

A

The dot erg

40
Q

Nationally, one out of every ____ fires involves automobiles?

A

Four

41
Q

Nationally, how many car fire deaths?

A

500

42
Q

Nationally, how many car fire injuries?

A

over 3,000

43
Q

Since December 2006, what increase in incendiary vehicle fires?

A

100%

44
Q

What percent of vehicles burned in DC used in serious crimes?

A

84%

45
Q

What is arson?

A

maliciously burning or attempting to burn any …building….watercraft….or railroad car….the property of another person, or any church or public building.

46
Q

What is an incendiary fire?

A

one that is intentionally ignited under circumstances in which the person knows that the fire should not be ignited

47
Q

District law has made the act of intentionally burning an automobile a….

A

destruction of property classification

48
Q

How many pounds of combustible material in vehicles

A

over 900

49
Q

What circumstances might warrant the call for investigators?

A

location in the vehicle, time of fire, location of fire, suspicious circumstances, removal of ID items, damage to vehicle

50
Q

What should company officers do at all vehicle fires?

A

check the trunk to ensure no bodies

51
Q

When developing a criminal case that involves automobiles, the first ____ hours is the most critical.

A

48

Bullitens (4 decks)

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