FIRE Flashcards
Fire - Class F
Cooking oils and fats
Extinguisher: Wet-Chemical
Fire - Class A
Combustible materials (Wood, Paper, Textiles)
Extinguisher: Water, Foam, Powder
Fire - Class B
Flammable liquids (Petrol, Spirit)
Extinguisher: Foam, Powder
Fire - Class C
Flammable gases
Turn off!
Extinguisher: Powder
Fire - Class E
Electrical fires
Extinguisher: Powder, CO2
Fire - Class D
Burning metals
Extinguisher: T.E.C.
Flashpoint?
Fire
lowest temperature which vapours begins
Convection
Fire
is the process of heat transfer by movement of fluids. Hot air raises, in room also horizontal
Smothering
Fire
**removal of oxygen ** (ersticken)
use of fire blanket
CO2 displacing the air
ventilation control
Starvation
Fire
starvation = aushungern
removal of the fuel
shut of oil, gas, fuel valves
boundary starvation?
4 ways a fire spreads
Convection
Conduction
Radiation
Direct Burn
Backdraft / Backdraught
Fire
an explosion that occurs when oxygen is rapidly enter in a superheated but oxygenpoor room.
From outside: when you see smoke comes out and almost disapears
Radiation
Fire
transfer of heat by electromagnetic waves
example: sun
(Strahlung)
flame inhibitation
Fire
breaking down the monecular chain reaction of combustible in a flame
triangle of fire
O2 (oxygen) - heat - fuel
Flashover
Fire
when in a good ventilated room the fire is everywhere, everything burns all at once
direct burning
Fire
process of fire spread by direct contact between the flame and material
Cooling
Fire
Remove the heat
- us of spray/jet
- us of water in internal spaces
- boundary cooling
Conduction
Fire
is transfering heat through a material by direct contact between particles.
example: metal is a good conductor
(Leiten)
Firepoint
Fire
lowest temperature at which vapors of the material will catch fire
what is the worst thing to do when Fire class B?
try to put out with water
