© 2014 by GHC/ADF. 

It is vitally important that any premises have the appropriate fire equipment for the nature of your business and space. We will determine this during your fire risk assessment.

Which extinguisher to use

 

The type of fire extinguishers you will need will be based on the fire type expected on your premises. There are six types of class of fire.

 

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Class

Definition of Class

Examples

Recommended Extinguishers

A

Solid materials of an organic nature; these normally produce glowing embers when burning

Paper, Wood, Textiles

Water, Foam, Powder

B

Flammable liquids and liquefiable solids

Petrol, White Spirit

Foam, Powder, Carbon Dioxide

C

Flammable gases

Butane, Propane

Powder*

D

Combustible metals

Potassium, Magnesium

Specialist Powders

E

Electrical equipment fires

Computer, Toaster

Carbon Dioxide, Powder

F

Cooking oil and fat fires

Chip Pan, Deep Fat Fryer

Wet Chemical

 

*Only specially trained professionals should attempt to extinguish a Class C fire.

 

There are five main types of fire extinguisher:

 

Water extinguishers are for use on Class A fires. These would commonly be found in office-like places that deal with a lot of paper. Some models of water extinguishers have passed an electrical conductivity test to work in proximity of electrical fires, though this type of extinguisher should never be used to extinguish an electrical fire.

 

Foam extinguishers are for use on Class A and BB fires. These could be found in offices and kitchens. Some models of foam extinguishers have passed an electrical conductivity test to work in proximity of electrical fires, though this type of extinguisher should never be used to extinguish an electrical fire.

 

Powder extinguishers are for use on Class A, B, C and E fires, as well as some Class D fires. These could be found in offices and kitchens. These extinguishers can be used on fires involving live electrical equipment.

 

Wet Chemical extinguishers are for use on Class F fires. They would typically be found in a kitchen using cooking oils and fat. These extinguishers prevent re-ignition of the fuel.

 

Carbon Dioxide extinguishers are for use on Class E and small Class B fires. Carbon Dioxide is non-conducting and so this type of extinguisher is suitable for use on live electrical equipment. This extinguisher will not leave any residue behind it; it is a clean agent.

Fire Extinguishers