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 Classification of Fire Extinguishers & Extinguishing Agents

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 Fluoro Protein foam

AFFF (Aqueous Film Forming Foam)

FFFP {Film Forming 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

Dry Powder Fire Extinguisher Section View All Parts

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