1. Fire Safety April 2012 Oak Lawn Park District

2. Pre-Lecture Quiz True or False 1.Oxygen is one of the four elements of fire. 2.Carbon dioxide is one of the key elements of fire. 3.They type of fuel being burned is one of the considerations when classifying a fire. 4.Class A fires are fueled by ordinary combustibles like wood, paper, cloth, etc.

3. Pre-Lecture Quiz True or False 5.Class B fires are electrical in nature. 6.Water can be used to extinguish any type of fire. 7.Some extinguishers can be used on more than one class of fire. 8.To extinguish a fire, aim the extinguisher at the top of the flames.

4. Pre-Lecture Quiz True or False 9.When using an extinguisher, you should sweep it slowly back and forth, covering the entire fire with the extinguishing substance. 10. Extinguishers should be clearly labeled with which class of fire they extinguish.

5. Elements of FIRE 4 elements –Fuel source – something to burn –Oxygen (21% oxygen in the air – fires need only 16%) –Heat –Chemical chain reaction ALL four elements are needed Removing any element STOPS fire

6. Classes of FIRE Determined by: –Type of fuel burned –Source of heat Must know class to fight fire!

7. Class A Fire FuelFuel –Wood –Paper –Other combustibles

8. Class B Fire Fuel is liquid or gasFuel is liquid or gas –Kerosene –Propane

9. Class C Fire ElectricalElectrical Heat SourceHeat Source –Faulty wiring –Short circuits –Electrical equipment

10. Class D Fire Fuel is combustible metalFuel is combustible metal –Magnesium –Sodium

11. Types of Fire Extinguishers Use different substances to control fire –Water –Dry chemical –Dry powder. Rated by class they extinguish –A,B,C or D –Combination of classes (ABC). Clearly labeled.

12. Proper Use of a Fire Extinguisher Know where extinguishers are located. Instructions for use on label.

13. PASS Method P ull pin or push button A im at base of flames S queeze the trigger S weep slowly back and forth.

14. Evacuate If extinguisher isn’t putting out fire If fire is spreading Close doors behind you Call for help.

15. Post-Lecture Quiz 1. Oxygen is one of the four elements of fire. TRUE 2.Carbon dioxide is one of the key elements of fire. FALSE Carbon dioxide is often used to help PUT OUT Class B & C fires. 3.They type of fuel being burned is one of the considerations when classifying a fire. TRUE 4.Class A fires are fueled by ordinary combustibles like wood, paper, cloth, etc. TRUE

16. Post-Lecture Quiz 5.Class B fires are electrical in nature. FALSE Class B fires involve liquids and gases. Class C fires are electrical in nature. 6. Water can be used to extinguish any type of fire. FALSE Water can actually spread a grease fire & can even cause an explosive reaction in some Class D fires. 7.Some extinguishers can be used on more than one class of fire. TRUE

17. Post-Lecture Quiz 8.To extinguish a fire, aim the extinguisher at the top of the flames. FALSE You should aim the extinguisher at the BASE of the flames 9.When using an extinguisher, you should sweep it slowly back and forth, covering the entire fire with the extinguishing substance. TRUE 10. Extinguishers should be clearly labeled with which class of fire they extinguish. TRUE