List the 4 ways firefighting foam works to extinguish fire.
- Cools
- Smothers
- Suppresses
- Separates
What are the safety considerations of safe working in high expansion foam?
- BA must be worn
- Toxic gases may be trapped in foam, visibility is nil and hearing is impaired
- Guidelines must be used
- It is a weak conductor of electricity
What are the colour codes for the following extinguishers?
- Water
- Foam
- CO2
- Dry Chem
- Vapourising Liquid
- Wet chem
- Water: Red
- Foam: Blue, or Red with Blue band/label
- CO2: Red with black band
- Dry Chem: Red with white band
- Vapourising Liquid: Red with yellow band (specialist use only)
- Wet chem: Red with oatmeal band
What are the classes of fire? List their name and an example of each.
Class A: fire involving solid carbonaceous materials e.g. wood, paper, straw, rubber.
Class B: Fire involving flammable liquids e.g. petrol, oil, alcohol, kerosene, paint
Class C: fires involving flammable gases e.g. LP gas
Class D: Fires involving combustible metals e.g. magnesium, sodium, calcium, aluminum shavings
Class E: Fires involving energised electrical equipment. CONSIDERED A SUBCLASS OF CLASS D AS ELECTICITY NOT A FUEL.
Class F: Fires involving cooking oil and fat e.g. deep fryer
What is used in dry chemical extinguishers?
Mono ammonium phosphate (ABE)
Features and uses of fire blankets?
Industrial size 1.5m X 1.5m
Household size 1m X 1m
Ideal for stovetop fires
Can be used for class A, B and F fires
Can be used to wrap around a person whose clothes have caught alight
Can be used as a personal shield when escaping a fire
Safety considerations of a fire blanket?
Risk of burns to hands and risk of fire re-ignition if blanket is removed too soon
What type of extinguisher would you use on the following classes of fire?
- A
- B
- C
- D
- E
- F
- A: Water
- B: Foam
- C: CO2/Dry Chemical
- D: Specialist
- E: CO2
- F: Wet chemical
