FIRE SAFETY CORRECT 100%
Type A extinguisher - ANSWERExtinguisher that uses pressurized water
Fire tetrahedron - ANSWERModel of the four elements/conditions required to have a
fire. The four sides of the tetrahedron represent fuel, heat, oxygen, and chemical
chain reaction. (Shaped like a 3 sided pyramid)
Fire - ANSWERChemical reaction called combustion, or rapid oxidation of
combustible material or fuel
producing heat and light
Components of fire - ANSWERFuel
Heat or ignition source
Oxygen (air)
Reaction chain
Fire reaction chain - ANSWERburning continues and accelerates
breakdown and recombination of molecules of burning material with oxygen
Classifications of fire - ANSWERBased on nature of the combustible material and
requirements for extinguishment
Class A
Class B
Class C
Class D
Class A fire - ANSWERFuel: Ordinary solid combustible materials that aren't metal
(paper, wood, plastic, and fabric)
Prevention: Good housekeeping, no smoking, keep itemsaway from heat source.
ABC extinguisher - ANSWERExtinguisher that uses
dry chemical/foam
ammonium phosphate
BC extinguisher - ANSWERextinguisher that uses carbon dioxide
Class B fire - ANSWERFuel: Flammable liquids/gases and combustible petroleum
products (in home- oil, grease, gasoline) (in clinical laboratory- ether, xylene,
acetone)
Prevention- fuel must be stored in explosion proof refrigerator and vented
How to use a fire Extinguisher - ANSWERstand a minimum of 6-10 feet from fire
Hold extinguisher in upright position
Apply to base of fire and work with a sweeping movement
Keep yourself between fire and door
P.A.S.S. - ANSWERTo use an extinguisher
Pull pin, Aim nozzle, Squeeze trigger, Sweep nozzle
