Types of Fire Extinguisher To meet current
regulations, businesses must have the correct type of fire extinguisher
required for different kinds of fire.
In this week’s blog at KBM
Fire Safety Service we look at the different types of fire
extinguisher and what they are used for.
Water & Foam Extinguishers There are 6 classes of fire risks that include fires caused by organic materials or combustible metals. These classes are dealt with in different ways. For example, water extinguishers are the most suitable type for Class A risks, such as paper or coal. The water cools the flames and removes the heat required for the materials to continue burning.
Foam is commonly used for Class B risks which are hazards involving fabrics, wood, cardboard and coal. Additionally, they can be used for Class A fires as the foam is water-based and remove heat from the flames. This type can also work by forming a barrier between the flames and the fuel, immediately putting it out.
Premises that will require these appliances include:
Schools Offices Hospitals Shops They should be stored at exit points where either Class
A or B risks have been identified in the most recent risk assessment .
Dry Powder Extinguishers Also known as ABC extinguishers, dry powder appliances
are suitable for risks that come under classes A, B and C. Businesses that will
require this type of appliance include welding companies, garages and LPG
dispensing plants to fight flames involving:
Flammable Gases Electrical Equipment Flammable
Liquids Fabrics The powder puts out the flames by separating the fuel from oxygen or removing the heating element so it can no longer burn. This appliance can only be used on electronic equipment up to 1000 volts, but there are specialist dry powder types available for anything over this.
Carbon Dioxide Extinguishers For electrical fires, Carbon Dioxide (CO2)
extinguishers are the primary option. CO2 appliances work by starving the flames of oxygen, so they burn out quickly. They are suitable for premises with server rooms, office spaces and businesses such as technology stores.
CO2 appliances can also be used to deal with fires involving flammable liquids such as petrol. However, unlike the other types mentioned, they can’t be used for putting out flames involving cooking oils,
paper or textiles.
Wet Chemical Extinguishers Class F fires involve cooking oils and fats. Wet chemical extinguishers are the most suitable appliance for these instances. The
potassium is expelled as a fine mist and creates a film on the surface that starves the flames of oxygen.
Anywhere that uses cooking oil and fat will require wet chemical appliances. These include commercial kitchens and restaurants.
Get in Touch Contact our team in Cornwall today on 01208 73001 or
07870 665551 for more information. Alternatively, send us a message via the Contact form for a prompt response.
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