Section 3--Material Readiness Flashcards
What is the fire tetrahedron?
Oxygen, Heat, Fuel, Chemical Chain Reaction. Without any one of these, the fire will not exist.
What fuels a Class A fire?
Wood, cloth, textiles and fibrous materials, and paper
How is a Class A fire extinguished?
Water in a straight or fog pattern
If a Class A fire is deep-seated how should it be combated?
AFFF to rapidly penetrate and extinguish the fire
What kind of fire is one from flammable combustible liquids such as gasoline, diesel fuel, jet fuel, hydraulic fluid, and lube oil?
Class B
How are liquid Class B fires extinguished?
AFFF, Halon, HFP, or PKP
What kind of fire is one from flammable gases such as acetylene?
Class B
How should gaseous Class B fires be extinguished?
They shouldn’t unless reasonable belief that flow of gas can be secured. Securing the source is the single most effective response.
What kind of fire is a Class C fire?
Energized electrical
How do you combat a Class C fire?
- -De-energize and combat as Class A
- -Non-conductive agents such as CO2 and Halon
What kind of fire is a Class D fire?
Combustible metals such as magnesium and titanium
How do you combat a Class D fire?
Water in large quantities, using a fog pattern. May cause small explosions.
