Classification of Fire Extinguishers & Extinguishing Agents

OBJECTIVES:

Upon completion of this lesson, you will be able to:

• Describe the Classification of Fire and Extinguishing Agents.
• Describe the Some Common Extinguishing Agents.
• Describe the Classification of Fire by Volume.
• Describe the Portable Fire Extinguishers Color Code.
• Describe the Method to use of Fire Extinguishers.
• Describe the Section View of a Fire Extinguisher.

All Fire Extinguishers Classification by Color Codes and Volume & Extinguishing Agents

Classification of Fire and Extinguishing  Agents:

Fire class	Status of fire	Material of fire	Extinguisher Type
A	Solid combustible Material	Wood, Cloth, Rubber, Wool, plastics	Water
B	Flammable liquids	Benzene, Oil products, Paints, Alcohol	Foam (AFFF ‘ PROTIENE)’
C	Flammable Gas	Natural gas, LPG, Methane, Propane	Dry Chemical ‘ Powder, Halotron
D	Fire in combustible light metals	Magnesium, Titanium, Potassium etc.	Dry Powder
E	Fires in Electrical circuits/ equip.	Electrical equipment and appliances.	CO2. Halotron
F	Kitchen fire	Oils, Cooking oils.	Wet Chemical Extinguisher

Some Common Extinguishing Agents:

Agent	Contents	Extinguishing Method
Water	Water	Cooling
Foam	Protein Flouro Protein foam AFFF (Aqueous Film Forming Foam) FFFP {Film Formina Flouro Protein Foam)	Smothering
C02	Carbon Dioxide Gas	Smothering

 

Agent	Contents	Extinguishing Method
Dry Chemicals	TypeA,B,C,&E	Breakdown of Chain reaction
Combustible Metal Extinguishers	Special dry Chemical	Breakdown of Chain reaction

Classification of Fire by Volume:

Sr.	Classification	Criteria
1	Minor Fire	Fire Extinguisher, Hose Reel
2	Small Fire	1 to 2 Jets.
3	Medium Fire	3 to 8 Jets.
4	Large Fire	9 to 18 jets.
5	Major Fire	18 + jets.

Portable Fire Extinguishers Color Code:

Class	Type of Fire	Extinguisher	Colour Code
A	Carbonaceous Materials	Water	Red
B	Flammable Liquid	Foam	Cream
C	Flammable Gas	Dry Chemical Powder, Halotron	Blue, Green

Portable Fire Extinguishers Color Code:

Class	Type of Fire	Extinguisher	Color code
D	Light Metal Fires	Dry Powder	Blue
E	Electrical	Co2	Black
F	Kitchen Fire	Wet Chemical	Golden

Method to use Fire Extinguisher:

P = Pull the safety pin

A =  Aim at the seat of the fire

S = Squeeze the handle

S = Sweep the fire

 

Section View of Fire Extinguisher

SECTION VIEW OF FIRE EXTINGUISHER