Fire

about fire and its type and how can we use extinguisher.

1. Fire Emergencies BY :- UDIT KUMAR DIXIT KHARAGPUR

2. Lesson Objectives Upon completion of this lesson, you will be able to 1. Define what is fire 2. List the elements of fire 3. Identify the classes of fire 4. Identify the methods of extinguishment 5. Name the parts of a portable fire extinguisher 6. The use of a fire extinguisher 7. Use of the “bucket brigade

3. FIRE Fire is the visible effect of the process of combustion-a special type of chemical reaction. It occurs between oxygen in the air and some sort of fuel. The products from the chemical reaction are completely different from the starting material.

4. There are three components necessary to produce a fire. 1.Heat 2.Fuel 3. Oxygen(Air) ( chemical chain reaction)

5. CLASSES OF FIRE Class A Class B Class C Class D Class E Class F Kitchen fires: Cooking oil, fat fryers Organic combustible materials: wood, cloth, paper, plastics Flammable and combustible liquids and gases: grease, gasoline Natural Gases metals:(ex)-magnesium. Sodium, Titanium, potassium Electrical equipment SL 7-8

6. Methods of Heat Transfer conduction Convection Radiation

7. FIRE EXTINGUISHMENT THEORY A fire may be extinguished by: a.) Temperature reduction (Cooling) b.) Fuel removal (Starving) c.) Oxygen exclusion (Smothering)

8. Extinguishing Agents Water Sand Wet Rags CO2 Dry Chemical

9. The Portable Fire Extinguisher A fire extinguisher is an active fire protection device used to extinguish or control small fires, often in emergency situations. It is not intended for use on an out-of-control fire

10. Parts of the Fire Extinguisher Handle and Operation lever Pressure gauge Safety pin Cylinder Hose Inspection tag Nozzle Label Hose Clip

11. How to use a fire extinguisher Pull the pin Aim the nozzle Squeeze the lever Sweep

12. The Bucket Brigade It refers to a method of fire fighting, where by people would form a line from the water source to the fire scene and would pass buckets to each other to extinguish a blaze.

13. REVIEW Define what is fire List the elements of fire Identify the classes of fire Identify the methods of extinguishment Name the parts of a portable fire extinguisher The use of a fire extinguisher 7. Use of the “bucket brigade

14. ANY QUESTION ?

15. THANKS