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- Fire Extinguisher Types (Free PDF Download)
- Different Types of Fire Extinguishers
- Different Types of Fire Extinguishers Used on Ships
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. 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.
Fire Extinguisher Types (Free PDF Download)
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. Fires must be fought carefully depending on the materials involved.
That is why they have been classified in 6 different categories:. We have a range of completely online courses, whether that is Fire Safety Training for general awareness, specific training if you work in a school or care home , Fire Warden Training for individuals in your business, or Fire Extinguisher Training to supplement your Fire Warden Training and practical extinguisher training.
All extinguishers will have one or more of the following classes symbols, to indicate which they are suitable for. Each type of fire extinguisher contains different materials that make them suitable for fighting certain types of fires, and is designed to safely and effectively discharge its contents. The correct one must be used for the right class of fire, otherwise they may prove ineffective or in fact worsen the situation.
For example, using a water extinguisher on an electrical fire or a carbon dioxide one on a burning oil fire is extremely dangerous.
Each type is easily identifiable by their names, colours, and sometimes their hoses. Depending on their size, some may not come with a flexible hose, such as smaller foam or aqua water spray extinguishers.
They are your classic model: they dispense water at a high pressure to extinguish flames. Water extinguishers are only suitable for class A fires , which means they can fight fires that involve wood, cardboard, paper, plastics, fabric and textiles, and other solid materials. Warning: do not use water extinguishers on burning fat and oil fires and electrical appliances. Dry water mist extinguishers are unique in that they can combat almost all types of fires, including class F fires that are usually difficult to attack.
They are also effective for fire-fighting because they form a safety barrier between the user and the fire — which repels some of the heat — and do not leave hard-to-clean residue behind. Other types will be better suited for fighting electrical fires, but dry mist extinguishers have usually had dielectrical tests carried out on them which means that if they are accidentally used on electrical fires, they will not pose as significant a hazard as normal water extinguishers.
As their name suggests, these are designed to combat class A, B, and C fires — those involving solids, liquids, and gases. The powder acts as a thermal blast that cools the flames so burning cannot continue. Due to their non-conductive nature, they are also suitable for fighting electrical fires. However, they do not effectively penetrate the spaces in equipment easily, so the fire could still re-ignite. The downside to ABC powder extinguishers is that they pose a danger of inhalation when used in close spaces.
They also leave residue behind that is difficult to clean up and causes damage to soft furnishings, carpets, and electrical equipment. They will state below the rectangle whether they are M28 or L2. M28 and L2 are unique extinguishers in that they are designed for tackling Class D fires — those involving combustible metals including swarf or powder , which are often produced in engineering factories. Metals includes lithium, magnesium, sodium, or aluminium, for example. The extinguisher has a low velocity applicator to ensure that the M28 or L2 powder is applied gently and efficiently to burning metal and to prevent the swarf from spreading.
This prevents the fire from spreading to other flammable materials and smothers the fire to prevent oxygen from reacting with the metal again. L2 is suitable for all types of metal fires, whereas M28 cannot be used on lithium need a way to remember that? Warning: do not use on any other fire type, especially live electrical fires. Also, bear in mind that water should not be allowed to come in to contact with burning metal. They are primarily water based but contain a foaming agent, which has rapid flame knock-down and a blanketing effect.
It smothers the flames and seals vapours so that re-ignition cannot occur. When used against class A fires, the user can simply point and spray. However, when used against class B fires — those with flammable liquids — they should not be sprayed directly into the liquid. This could cause the fire to be pushed and spread to surrounding areas. The best method of application is to spray the foam nearby so that it can build up and flow across it.
Warning: these should not be used on any other fire classes, especially electrical fires or chip or fat pan fires. Most foam extinguishers will have had dielectrical tests performed on them, so foam is less hazardous than water if it is accidentally sprayed on live electrical equipment. However, they should still not be used to fight electric fires. They also have a distinct type of hose. Carbon dioxide extinguishers are used for combating class B and electrical fires — they suffocate the fire by displacing oxygen in the air.
Because they do not leave any substances behind and so minimise damage done to equipment, unlike other extinguishers, they are particularly useful for offices and workshops where electrical fires may occur. Warning: they must not be used on hot cooking oil and fat class F fires. The strong jet from the extinguisher would push the burning oils or fats and spread the fire to surrounding areas.
Also bear in mind that while carbon dioxide is effective at smothering fires, once the gas has floated away, the fire may reignite if the source has not been removed. Furthermore: you must not hold the horn, base, or pipework on a C02 extinguisher while operating it.
The gas becomes extremely cold during its discharge and so this could damage your hands. It also has an extended hose that you can hold and point, which is useful when fighting fires on a kitchen top.
Wet chemical extinguishers are designed for combating fires that involve class F fires. They are effective because they are capable of stopping fires that are of an extremely high temperature, particularly cooking oils and fats. They also discharge gently, stopping the burning oils and fats from being pushed and splashing to surrounding areas or even the user.
The chemicals contained within the canister dispels the flames, cools the burning oil, and produces a soap-like solution that seals the surface and prevents re-ignition of the fire.
The best method of application is to spray in slow circular motions. The user should empty the entire contents onto the oils or fats. Otherwise, the fire may re-ignite. Warning: wet chemical extinguishers are usually not recommended for class B fires — those involving liquids. Also, although they are capable of combating class A fires, they are not as effective as other extinguishers at doing so. Fire extinguishers are an important addition to fire safety measures, as they can help to stop small fires.
The information throughout this article has provided some key guidance on the different types of extinguishers and their uses, but keep in mind that you also need practical training to learn how to safely handle extinguishers. Skip to content. What Are the Different Classes of Fires? That is why they have been classified in 6 different categories: Class A — Fires that involve solid flammables and dusts, such as wood, plastics, paper and cardboard, fabric and textiles, and dusts such as grain dust and flour.
Class B — Fires that involve flammable liquids, such as gasoline, petroleum oil, paint, or diesel. Class C — Fires that involve flammable gases, such as propane, butane, or methane. Class D — Fires that involve combustible metals, such as magnesium, lithium, sodium, potassium, titanium, or aluminium.
Class F — Fires that involve cooking oils and fats, such as vegetable oil, sunflower oil, olive oil, maize oil, lard, or butter typically those used for deep-fat fryers. Tags: Fire Safety Safety Management. Like This Article? Post Author Liz Burton. Liz has been writing for the Hub since and specialises in writing about technical topics in a style anyone can understand. Liz has written a variety of articles, ranging from fire safety, through food hygiene and anti-bribery, to dignity in care.
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Different Types of Fire Extinguishers
Everyone knows that their workplace is required to have fire extinguisher s , and everyone should know where the nearest one is. However, most do not realize that a single fire extinguisher does not work on all types of fire. There are many different types, or classes, of fire extinguishers just as there are many different classes of fire. To achieve true safety for your place of work, you need to ensure that you have the proper extinguisher installed relevant for the potential fire hazards for your building. The theory behind portable fire extinguishers is that the fire can be extinguished by removing any one or more of these four elements.
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. If the fire cannot be extinguished using a 1kg extinguisher it is too large and you should evacuate. Kitchens are where most domestic fires occur.
A fire extinguisher is an active fire protection device used to extinguish or control small fires, often in emergency situations. It is not intended for use on an out-of-control fire, such as one which has reached the ceiling , endangers the user i. Typically, a fire extinguisher consists of a hand-held cylindrical pressure vessel containing an agent that can be discharged to extinguish a fire. Fire extinguishers manufactured with non-cylindrical pressure vessels also exist but are less common. There are two main types of fire extinguishers: stored-pressure and cartridge-operated.
Not all fires are the same, they are classified according to the type of fuel that is burning. If you use the wrong type of fire extinguisher on the wrong class of fire.
Different Types of Fire Extinguishers Used on Ships
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. The water component of this extinguisher removes the heat of the fire, while the foam component removes the oxygen.
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.