Fire Theory Flashcards
What kind of threat is fire?
A universal threat to life
Why is the severity of the threat of fire increased on an aircraft?
There are large amounts of flammable ignition sources, fuel and the limited possibilities of escape.
What are the prime causes of death from fire?
The inhalation of smoke and toxic fumes
If smoke or fire is found in the cabin who needs to be notified immediately?
The flight crew
When fire or smoke has been found what 2 PA’s need to be made?
One to the cabin crew team “Cabin Crew FCB to [location], Cabin Crew FCB to [location]”. and an additional PA to the passengers to calm them if they are distressed.
What are the 3 elements of fire?
- Heat
- Oxygen
- Fuel
What is classed as fuel?
Anything which will burn
What is classed as Oxygen?
The surrounding air
What is classed as heat?
The heat from electrical sources or burning materials
What is meant by the chemical reaction of fire?
The interaction between fuel, oxygen, and heat creates a chemical reaction which results in fire.
What happens if you remove one element of the fire triangle?
There is no fire
What happens to the fire when you remove the fuel?
You starve the fire
What happens to the fire when you remove the oxygen?
You smother the fire
What happens to the fire when you remove the heat?
You cool the fire
If you wanted to interfere with the chemical reaction of fire what would you do?
Apply FX
Once FX has been applied what should you do?
Further actions to prevent the fire from starting again- i.e. putting the source of the fire into a metal box.
What is a Class A fire?
A fire which is started from solid materials of an organic nature in which combustion takes place with the formation of glowing embers.
Give examples of sources of a Class A fire
Wood, paper, plastic, textiles, rubber.
What is a Class B fire?
A fire started by flammable liquids.
Give examples of sources of a Class B fire
Oil, grease, tar, paint, lacquers.
What is a Class C fire?
A fire caused by flammable gases.
Give an example the source of a Class C fire
Butane lighter gas.
What is a Class D fire?
A fire started by combustible metals.
Give examples of sources of a Class D fire
Sodium, magnesium, titanium, lithium.