Fire Control 4 Flashcards
Flammable Range of Gasoline
1.4% - 7.4%
Most common hydrocarbon fire
Gasoline
Gasoline auto ignition temperature
495f
What is good about aluminum containers?
It will melt before it BLEVE’s
Most common spill
Diesel
What are 3 dimensional fires?
Pressurized. Product needs to be shut off.
H
A
H
A
M
I
C
E
Gasses lighter than air
Helium
Acetylene
Hydrogen
Ammonia
Methane
Illuminating gases
Carbon Monoxide
Ethelene
Flash point of gasoline
-45
Flash point of diesel
130
Vapor density of gasoline
2-4
Vapor density of diesel
1.5
Vapor density of propane
1.6
Vapor density of butane
2
Specific gravity of gasoline
0.8
Specific gravity of diesel
0.85
Expansion ratio of gas and diesel
200 pure vapor
Propane expansion ratio
270 x
Butane expansion ratio
230 x
Flammable limit of diesel
.4% - 6%
Flammable limit of propane
2.1% - 9.5%
Flammable limit of butane
1.6% - 8.4%
Gasoline BTU
19000
Diesel BTU
18500
Propane BTU
21500
Butane BTU
21000
Gasoline flame spread
12’ per second
Diesel flame spread
1’ per second
DOT placard Gasoline
1203
What % foam for polar solvent?
6%
What % foam for hydrocarbon?
3%
DOT placard for diesel
1202
DOT placard for propane and butane
1075
4 ways foam works
SMOTHERS – fire by
removing oxygen
SEPARATES – flames from
fuel surface
COOLS – fuel and adjacent
metal surfaces
SUPPRESSES – vapors being
released
3 types of foam application
Rain down, Deflect, and Roll on
Foam bubbles hold water, but __ of water will drain out
in about ____ minutes
25% in 3 min
Polar Solvents
alcohol based-ethanol, methanol
thinners
acids
Ketones-methyl ethyl ketone
Hydrocarbons
gasoline
benzene
toluene
What foam is used on polar solvents?
What is a fire attack pattern? (Power Cone)
25 - 35 degree fog
In a flammable gas fire, what is a fog degree that helps to back out?
45 - 80 degree fog
