CAT-C FIRES Fire Extinguishers

• /

CAT-C FIRES Fire Extinguishers 1.List the 5 classifications of fire: A- ordinary combustibles; B- flammable liquids C- energized electrical; D- flammable metals; K- Animal & vegetable oils

2.Fire Extinguisher: A a manually operated device for extinguishing small fires

3.What are Fire Extinguishers used as?: First line of defence against fires of

limited size.

4.What are the 4 ways in which a fire can be extinguished?: removing access to

oxygen, removing fuel, inhibiting the chemical chain reaction and removing heat.

5.Describe class A fire extinguishers and it's symbol: Class A fires have a fuel source consisting of common materials like paper, cardboard, lumber and plastics.Green Triangle 6.Describe Class B fire extinguishers and it's symbol: Class B fires are flamma- ble or combustible liquids such as gasoline, kerosene or common organic solvents. Red 1 / 2

• /

Square 7.Describe Class C Fire extinguishers and it symbol: Class C fires have com- mon fuel sources but are ignited by electrical equipment such as appliances, switches, panel boxes power tools, or hot plates. Blue Circle

8.Describe Class D Fire extinguishers and it's symbol: Class D fires involve

combustible metals such as magnesium, titanium, potassium, sodium and pyrophor- ic organometallic reagents. Yellow Star

9.Describe Class K Fire extinguishers: Class K fires are kitchen fires and have

fuels similar to those in class B (vegetable oil and animal oils).

10.CO2 extinguishers are effective on which classes of fires?: Class B and C. The Carbon Dioxide effectively suffocates the fire and leaves no residue

11.What is the range of class A ratings?: 1-A throught 40-A

• , , and fires must be extinguished for an ex-

tinguisher to receive a A through a A rating: Wood panel fire, excelsior fire and wood crib fire, 1 6

• / 2