File Name: types of fire extinguishers and their uses .zip
This is The Fire Triangle. Not all fires are the same.
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While our aim is to continue to provide an uninterrupted service, we will continue to monitor the ever changing situation while taking all necessary steps to ensure the wellbeing of both our staff and customers. Fire extinguishers are designed to tackle specific types of fire. There are six different classes of fire and several different types of fire extinguishers.
Water extinguishers are one of the most cost-effective ways to fight Class A fires, those fuelled by solid materials such as paper, wood and textiles. There are four different types of water extinguishers: water jet, water spray, water with additives and water mist or fog.
Foam fire extinguishers can be used on Class A and B fires. They are most suited to extinguishing liquid fires such as petrol or diesel and are more versatile than water jet extinguishers because they can also be used on solids such as wood and paper.
The foam extinguishes liquid fires by sealing the surface of the liquid, preventing flammable vapour reaching the air and starving the fire of fuel. They are not suitable for use on free flowing liquid fires. Powder extinguishers are a good multi-purpose fire extinguisher because they can be used on Class A, B and C fires. They can also be used on fires involving electrical equipment however, they do not cool the fire so it can re-ignite. Powder extinguishers can also create a loss of visibility and may create breathing problems.
They are not generally recommended for use inside buildings unless there is absolutely no alternative. CO2 extinguishers are ideal for places with a lot of electrical equipment such as offices or server rooms because they are safe to use on fires involving electrical apparatus.
Carbon dioxide extinguishers do not leave any residue, unlike a foam extinguisher. They can also be used on Class B fires, those involving flammable liquids such paraffin or petrol. CO2 extinguishers work by smothering the fire and cutting off the supply of air.
Wet chemical extinguishers are suitable for use on Class F fires involving cooking oils and fats, such as lard, olive oil, sunflower oil, maize oil and butter. They are extremely effective, when used correctly.
The wet chemical rapidly knocks the flames out, cools the burning oil and chemically reacts to form a soap-like solution, sealing the surface and preventing re-ignition. Although they are primarily designed for use on Class F fires, cooking oils and deep fat fryers.
They can also be used on Class A fires wood, paper and fabrics and Class B fires flammable liquids. Fire blankets are primarily for use on hot oil fires such as frying pans or small deep fat fryers. They can also be used on someone whose clothing has caught fire. They work by smothering the fire, stopping access to the oxygen fuelling it and extinguishing it. Browse range. Coronavirus update Following the recent covid announcement regarding the closure of non-essential businesses, we would like to reassure our customers that as suppliers of essential emergency equipment to the healthcare sector, we are still open for business.
Classes of fire Class A - fires involving solid materials such as wood, paper or textiles. Class B - fires involving flammable liquids such as petrol, diesel or oils. Class C - fires involving gases. Class D - fires involving metals. Class E - fires involving live electrical apparatus. Types of extinguishers Water extinguishers Water extinguishers are one of the most cost-effective ways to fight Class A fires, those fuelled by solid materials such as paper, wood and textiles.
Water jet extinguishers work by spraying a jet of water at the burning materials, cooling them and preventing re-ignition. They should not be used on live electrical equipment. Water spray extinguishers use a very fine spray of water droplets, each droplet is surrounded by air which is non-conductive.
Most water spray fire extinguishers carry a 35 kV dielectric test approval which means they have been tested on a 35, Volt electrical source at one meter. Water extinguishers with additives are water extinguishers with foaming chemicals added. The water loses its natural surface tension meaning that it can soak into the burning materials more effectively. Adding the chemicals to the water means that a smaller extinguisher can produce the same fire rating as a larger, water only, extinguisher.
Water mist, or fog, extinguishers apply water in the form of mist, or fog, the droplets are much smaller than those from the water spray extinguisher. The smaller the droplet, the larger its surface area in relation to its size, the quicker the droplet evaporates which absorbs the heat energy faster.
The downside is the smaller the droplet the less it weighs and therefore the less powerful the cloud of water. All water extinguishers have a red label.
Foam extinguishers Foam fire extinguishers can be used on Class A and B fires. Foam extinguishers have a cream label. Powder extinguishers Powder extinguishers are a good multi-purpose fire extinguisher because they can be used on Class A, B and C fires. Powder extinguishers have a blue label. Carbon dioxide extinguishers CO2 CO2 extinguishers are ideal for places with a lot of electrical equipment such as offices or server rooms because they are safe to use on fires involving electrical apparatus.
Carbon Dioxide Extinguishers CO2 have a black label. Wet chemical extinguishers Wet chemical extinguishers are suitable for use on Class F fires involving cooking oils and fats, such as lard, olive oil, sunflower oil, maize oil and butter. Wet chemical extinguishers have a yellow label. Fire blankets Fire blankets are primarily for use on hot oil fires such as frying pans or small deep fat fryers.
If a fire starts, it can spread quickly. Stored in its liquid form, when it is sprayed and hits the air, it converts to its gas form which is non-conductive, safe for use while humans are present, leaves no residue, and has a very short atmospheric lifetime, making it eco-friendly. Today's most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires. Select the appropriate type of fire extinguisher. Every state has a State Fire Code with a section on fire extinguisher requirements. Does your building require fire extinguishers throughout? For the sake of the exam appearing candidates, we had furnished the complete details of the MIDC Assistant […] It is not intended for use on an out-of-control fire, such as one which has reached the ceiling, endangers the user i.
It's important to make sure you have the right types of fire extinguishers on hand to put out common household fires. Read our fire extinguisher safety tips to learn how to stay safe and don't forget to make sure you have the right coverage if your home sustains fire damage. The first thing to do when choosing a fire extinguisher is to decide which rooms in your house need one. You should keep at least one on each level of your house. Make sure you keep fire extinguishers handy where fires are more likely to start, like in the kitchen and garage. There are four classes of fire extinguishers — A, B, C and D — and each class can put out a different type of fire. Multipurpose extinguishers can be used on different types of fires and will be labeled with more than one class, like A-B, B-C or A-B-C.
If you use the wrong type of fire extinguisher on the wrong class of fire, you can Different types of fire extinguishers are designed to fight different classes of fire.
There are four classes of fires: Class A : Ordinary solid combustibles such as paper, wood, cloth and some plastics. Class B : Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering. Class C : Electrical equipment, appliances and wiring in which the use or a nonconductive extinguishing agent prevents injury from electrical shock.
When it comes to fire safety, making sure your home or workplace is prepared with the right type of fire extinguisher is a big deal. Of course, if the fire is significant, your priority should be to evacuate your home or office immediately and wait for firefighters outside. There are five different categories :. Many homes and offices will either use general-purpose or kitchen extinguishers, but other environments, like laboratories or warehouses, might need more specific extinguishers.
There are different types of fire extinguishers because there are various types of fires. Being able to immediately distinguish which extinguisher you need in an emergency apart could make a lifesaving difference. Throughout this article, we will explain the different classes of fires, the symbols that identify these, and the different types of extinguishers and their uses.
A fire extinguisher is a first attack tool for use in the early stages of a fire. It should only be used on a small fire no larger than a waste paper basket and by someone who is confident and physically capable of using the extinguisher. A one kilogram 1kg dry powder extinguisher is recommended for domestic home use.