*TB 5- Automobile Fires Flashcards
Auto fires:
Fire conditions may cause Hydraulic Energy Absorbing Bumpers to travel up to ___ inches
3 inches
Auto fires:
Fire conditions may cause Mechanical Energy Absorbing Bumpers to travel up to ___ inches
4”
Auto fires:
Overheated brakes and/or ____ (over/under?) inflated tires are the usual causes of tire fires.
Under inflated
Auto fires:
Most auto glass is tempered and will break out in small chips. The exception is the front windshield, which should be _____ glass
Safety glass
Auto fires:
Where should you strike a car window in order to break it?
In the corner
Auto fires:
During an auto fire, is it ok to remove the fuel cap?
No. Removing the gas cap from a fuel tank, under heat and pressure conditions, could result in a reflash or explosion
Auto fires:
What is the flashpoint of gasoline?
Specific gravity?
- 45°F
0. 8
Auto fires:
What is the flashpoint of diesel?
Specific gravity?
125°F
Less than 1.0
Auto fires:
Standard operating procedure involves a minimum deployment of what equipment for auto fires?
1 1/2” line
Dry chem extinguisher
Auto fires:
The effective range of a 20 pound extinguisher is ___ to ___ feet.
15 to 20ft
What does BLEVE stand for?
Boiling Liquid Expanding Vapor Explosion
Auto fires:
The hazard of a BLEVE is an important consideration when addressing fires in vehicles utilizing ______.
Liquid Petroleum Gas (LPG)
Auto fires:
Recorded BLEVES have occurred within ___ minutes of fire exposure
10 min
Auto fires:
Bumper assemblies have launched a distance of ____ ft under fire conditions.
25 ft
Auto fires:
LPG is _____ (heavier/lighter) than air?
Heavier
For vehicle extrication, a safe ____ ft minimum working area must be established
30 ft
Auto fires:
For vehicle extrication, the _____ will normally assume the role of Safety Officer
Engine captain
Auto fires:
Working within ___ feet of any vehicle fire constitutes working in an IDLH
30 ft
Auto fires:
_____ system malfunction is a leading cause of fires in the engine compartment.
Fuel
Auto fires
What percentage of department fires are auto fires?
20%
When did automakers start using vapor canisters?
1970
Air conditioning systems use Freon gas. When exposed to heat What two toxic gases will be created?
Fluoride and Phosgene
Some automotive bumpers can be charged with___PSI nitrogen/helium
150 psi
Batteries are explosive hazard due to the presence of___vapors. When safe, always disconnect the ground cable first.
Hydrogen vapors
