TB 5 - Auto Fires

Question 1

Approximately what percentage of the departments fire responses involve motor vehicles?

Answer 1

20%

Question 2

CHP research has indicated that the use of excessive warning lights may cause focus fixation particularly in what drivers?

Answer 2

Drunk drivers

Question 3

For apparatus placement, you should spot the apparatus where to avoid accidental contact with hazardous/flammable liquids and vapors and to protect by reducing smoke in work area?

Answer 3

Uphill

Upwind

Question 4

The interior release for the hood is usually made out of what?

Answer 4

Plastic

Question 5

If the interior hood release is destroyed by fire, search the general fire wall area under the dashboard for a bare cable, pull the cable using what will usually release hood?

Answer 5

Pliers

Question 6

Use what tool to prop hood open as this will protect against spring failure of hood?

Answer 6

Hayward

Crowbar

Question 7

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

Answer 7

Hydrogen vapors

Question 8

You should always wear what when working in engine compartment if not wearing face piece?

Answer 8

Safety goggles

Question 9

When sage, always disconnect which cable first from the battery?

Answer 9

Ground cable

Question 10

Control of emissions from evaporation of fuel has been required in car models since what year?

Answer 10

1970

Question 11

Rupturing of the vapor canisters May release flammable vapors, where are the canisters located?

Answer 11

Lower forward portion of engine compartment

In one of the front wheel wells

Question 12

Freon has used in AC is under pressure and may emit what toxic gases if heated to the point of decomposition?

Answer 12

Phosgene and fluoride

Question 13

What system malfunction is a leading cause of fires in the engine compartment?

Answer 13

Fuel system

Question 14

In order to extinguish the resultant fire of ruptured fuel lines, it can be accomplished by what?

Answer 14

Crimping fuel line

Deactivating fuel pump

Question 15

For fires involving dash instrumentation, disconnect the electrical power and treat as what classification of fire?

Answer 15

Class A fire

Question 16

What area of the vehicle is a more contributing factor to the spread of fire and a source of toxic smoke rather than an ignition factor?

Answer 16

Interior passenger area

Question 17

The interior passenger area must be well ventilated, what shall be used when ventilation is inadequate or impractical?

Answer 17

Breathing apparatus

Question 18

For energy absorbing bumpers, hydraulics consist of gas chamber filled with a mixture of inert, non flammable nitrogen/helium gas pressurized to what psi?

Answer 18

150 psi

Question 19

Hydraulic bumpers have 2 chambers speedster by a floating piston and can travel up to how many inches?

Answer 19

3 inches

Question 20

Mechanical bumpers employ heavy a heavy spring to absorb impact and can travel up to how many inches?

Answer 20

4 inches

Question 21

Bumper assemblies which failed under sever fire exposure and traveled a horizontal distance of approximately how many feet?

Answer 21

25 feet

Question 22

What is the cause of tire fires?

Answer 22

Overheated brakes

Under inflation of tires

Question 23

What are metal fuel tanks constructed of?

Answer 23

Sheet metal with crimped and welded seams

Question 24

What are plastic fuel tanks constructed of?

Answer 24

Molded high density polyethylene or similar material

Question 25

Do not remove the gas cap from a fuel tank under heat and pressure conditions because it could result in what?

Answer 25

Reflash or explosion

Question 26

The mode severe casualties in terms of loss of life and property occur from fires following what type of collisions?

Answer 26

Rear end collisions

Question 27

What is the flashpoint of gasoline?

Answer 27

-45 degrees

Question 28

What is the specific gravity of gasoline?

Answer 28

0.8

Question 29

What is the flash point of diesel?

Answer 29

125 degrees

Question 30

What is the specific gravity of diesel fuel?

Answer 30

Less than 1

Question 31

You should avoid using road flares to eliminate ignition sources, use what instead?

Answer 31

Traffic cones

Question 32

For absorption of small spills, the absorbed material must be properly disposed of, contact MFC to request the response of who?

Answer 32

City street maintenance or appropriate agency

Question 33

How many feet within any vehicle fire constitutes working in an IDLH?

Answer 33

30 feet

Question 34

Who should consider establishing a water supply or calling for an additional engine company?

Answer 34

IC

Question 35

What should you use to prevent unexpected movement of vehicle during firefighting operations?

Answer 35

Chock blocks | Equipment lines

Question 36

When possible you should position the dry chem extinguisher on what side of the vehicle?

Answer 36

Windward

Question 37

What is the effective range of a 20 pound extinguisher?

Answer 37

15-20 feet

Question 38

The LPG storage cylinder is usually found on the exterior of the vehicle on which side?

Answer 38

Either side or the rear

Question 39

The LPG storage tank may be found where if properly sealed and separated from passenger compartment?

Answer 39

In vehicle interior

Question 40

How can flow of LPG through piping can be controlled?

Answer 40

Closing valves found on storage cylinder

Question 41

Pressure relief valves are required at the storage cylinder for LPG, if vapors coming from relief valve ignite what should you allow the LPG to do?

Answer 41

Burn and protect exposures

Question 42

BLEVEs have occurred within how many minutes of fire exposure?

Answer 42

10 minutes

Question 43

Is LPG heavier or lighter than air?

Answer 43

Heavier