Flashcards in Block VI - Firefighting Fundamentals Deck (13)
Primary and Secondary duties of a firefighter.
Primary: Saving lives.
Secondary: Extinguish fires and limit the damage to aircraft, shipboard, airfield installed equipment, and/or airfield structures.
What is the fire triangle?
Simple model that includes heat, fuel, and oxygen as the key components.
The fire triangle has been partially replaced by what?
What is the difference between the triangle and tetrahedron?
The addition of a 4th element is what makes the triangle become a tetrahedron. (Chemical Reaction)
What are the 4 elements (Fire)?
Heat, fuel, oxygen and chemical reaction.
How many classes of fire are there and name each?
Four. ALPHA, BRAVO, CHARLIE, DELTA
Define class ALPHA fire.
Occur in combustibles materials that produce an ash such as burning wood and wood products, cloth, textiles and fibrous materials, and paper products.
What are the effective extinguishing agents to fight a class ALPHA fire?
Water and Aqueous Film Forming Foam.
Define a class BRAVO fire.
Occur with flammable liquid substances such as gasoline, jet fuels, oil, and other petroleum based products.
Effective extinguishing agents to fight a class BRAVO fire are?
AFFF, Halon 1211, Purple K Powder (PKP), and carbon dioxide (CO2)
Define a class CHARLIE fire.
Energized electrical fires that are attacked by using non conductive agents.
Effective extinguishing agents for a class CHARLIE fire are?
Energized: CO2, Halon, PKP, and H2O in fog patterns with a minimum distance of 4 Ft.