Chapter 5 Fire Behavior Flashcards
A chemical reaction that produces heat
Exothermic
Fires involving combustible cooking oils and fats are Class..
Class K
What does smoke puffing in and out of a building indicate
Backdraft conditions
What is another term for fire point
Flame point
What % of oxygen is normally found in air
21
What is the process of heating a solid fuel so that it liberates gaseous fuel vapors
Pyrolysis
What is a common indicator of backdraft conditions
Smoke that appears to be pressurized
What is a common method of extinguishing class B fires
Excluding the oxygen
Which stage of fire results from decreasing oxygen and/or fuel supply
Decay
A gas with a vapor density of ___ will rise in air
0.1
Flashover is a rapid transition into the ____ stage of fire development
Full developed
The rapid chemical process in which the combination of a substance with oxygen produces heat and light is
Combustion
Turbulent smoke is an indication of impending
Flashover
What is the lowest temperature at which a fuel-air mixture will ignite in the presence of air and continue to burn
Ignition temperature
What is the lowest temperature at which a liquid produces enough vapor to sustain a continuous fire
Fire point
