3.2.2.6 Vehicle fire response Flashcards

1
Q

How many engines typically respond to a vehicle fire?

A

One

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2
Q

Approximately how far from a vehicle fire should the apparatus be positioned?

A

75ft

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3
Q

What is the minimum size attack line for a vehicle fire?

A

1.75”

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4
Q

When rescue is not a factor, where should water initially be applied to the vehicle fire?

A

to extinguish the fire

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5
Q

What should be done ASAP in the case of a fire in a vehicle with LPG or LNG?

A

close the valve as soon as possible

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6
Q

How cool should the LNG/LPG tank be before cooling efforts can be discontinued?

A

Cool to the touch

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7
Q

What type of foam is recommended for vehicle fires with flammable liquids burning?

A

Class B foam

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8
Q

If the officer in charge determines that the vehicle fire is undetermined, suspicious, or incendiary in cause, who should be notified?

A

Shift commander

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9
Q

Energy absorbing bumper assemblies have been known to travel how far when rupturing?

A

25-75ft

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10
Q

Batteries are an explosion hazard due to the presence of what type of vapors?

A

hydrogen

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11
Q

When the situation is stable, what battery cable should eb disconnected first, and how?

A

Negative, by removing a chunk

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12
Q

Well sealed interiors of modern vehicles present the potential for what?

A

backdraft

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13
Q

What should be in place before making entry to a vehicle interior?

A

Charged hoseline

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14
Q

What type of extinguisher can be effective on a combustible metal fire?

A

dry chemical

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15
Q

High voltage drivetrains in hybrid/electric vehicles can operate at what voltages?

A

144-675 volts

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16
Q

High voltage drivetrains in hybrid/electric vehicles can operate at what amperage?

A

125 amps

17
Q

What color cable is the dangerous one in a hybrid/electric vehicle?

A

bright orange

18
Q

Hydrogen is combustible at what atmospheric concentrations?

A

4-74.2%

19
Q

What gas has the highest flame velocity?

A

Hydrogen

20
Q

The ignition energy of hydrogen is very low at _____% less than methane gas.

A

32%