Fire Hazards Flashcards
Ingredients of fire
Oxygen
Fuel
Heat
Solid flammables
CLASS A
Liquid Flammables
CLASS B
Plugged in electrical items
CLASS C
Metals
CLASS D
Kitchen Fires
CLASS K
Atmosphere contains ____% oxygen
21
Removal of heat
Cooling
Removal of fuel
Starving
Removing oxidizing agent
Smothering
Inert chemicals can be used to inhibits metallic faires or grease fires
Inhbition of chemical
chain reactions
All four requirements of fire are present
Ignition Stage
Heat released is increasing, more fuel is demanded. Shortest stage
Growth stage
Max temperature reached, rapid oxygen consumption
Fully Developed Stage
Oxygen and fuel starts to go away
longest stage
backdraft may happen
Decay Stage
Water can put out the fire
CLASS A FIRE
Water is not enough
CLASS B FIRE
DO NOT use water
CLASS C FIRE
Salt based special powders and clean dry sand are effective
CLASS D FIRE
DO NOT use water
If sizable, use fire extinguisher
CLASS K FIRE
Burning of buried decomposed organic matter
Ground Fires
Most common type, fallen leaves, bark, and stems serve as fuel
Surface Fires
Winds help spread this often as high parts of trees are in flames
Crown Fires
Causes that do not require human interaction
Natural Causes
Causes that require human interaction and repulsion occurs due to natures natural tendency
Anthropogenic Causes
