Fire extinguishers contain different chemicals, depending on the application. D Class fires are fires involving combustible metals such as sodium, magnesium, lithium and potassium. Dry powders use a different extinguishing method than do standard dry chemicals. For use in environments with combustible metal hazards including magnesium, sodium, and potassium, this Class D fire extinguisher can help to fight spontaneous fires. Sodium chloride (Super-D, Met-L-X, M28, Pyrene Pyromet*) contains sodium chloride salt, which melts to form an oxygen-excluding crust over the metal. Distance To Fire Extinguisher Class A 75 Feet Maximum area that one extinguisher can protect and meet the 75 ft. rule = 11,250 sq. Specialised dry powders are available to control this class of fire. Water and Foam fire extinguishers extinguish the fire by taking away the heat element of the fire triangle. It has a range of about 15 feet. There is data showing that zirconium, uranium, titanium, and powdered aluminum fires can be controlled and extinguished with this unique extinguisher. (See our Home Fire Safety Fact Sheet – Fire Extinguishers for Domestic Use.) Skip to main content. Heat from the fire causes it to cake and form a crust excluding air and dissipating heat from burning metal. UL ratings are numbers that refer to the extinguisher’s relative power against that class of fire. A halon fire extinguisher uses bromochlorodifluoromethane, halon 1211, as its extinguishing agent. Class D fires – are fires involving burning metals (eg aluminium swarf) ... band or circle covering at least 5% of the surface area of the extinguisher in a second colour indicating the contents of the extinguisher. This table shows the types of Fire Extinguisher suitable for each class of fire. Before this classification system, there was a classification of electrical fires, but since electricity itself is a cause of fire, these types of fires have been incorporated into the main classes. Holding the extinguisher by the handle with the nozzle pointing away from you, pull out the pin located below the trigger. The UL rating for Class A and B extinguishers includes a number; the higher the number, the greater the firefighting capability. An extinguisher rated 2A is twice as powerful as one rated 1A. Many homes and offices will either use general-purpose or kitchen extinguishers, but other environments, like laboratories or warehouses, might need more specific extinguishers. What type of fires can be extinguished with a MET-L-X powder extinguisher? There are several class D fire extinguisher agents available; some will handle multiple types of metals, others will not. Class F Fires involve cooking oils and fats. To achieve a Class “A” rating, the extinguisher must be capable of putting out the wood crib, wood panel and excelsior (shredded paper) tests. Class D: Use this type of extinguisher on flammable metals, such as aluminum, sodium, or magnesium. A Class K extinguisher is more effective in controlling fires involving primarily vegetable oils as it causes a chemical change to the oils or fats making re-flash far less likely. Knowing fire extinguisher types is important, so you can act fast. Fire Extinguisher Quiz; Interactive Fire Safety Map; Types of Fire Extinguishers. Ratings are based on the size of the material that can be repeatedly extinguished. Class K: A Class K fire extinguisher is rated for use with cooking oil fires. Using water would produce hydrogen and cause an explosion. The number in front of the A, B, or C indicates the rating size of fire the unit can extinguish. Unit 5: Fire Extinguishers. ft.. Class B 50 Feet Maximum area that one extinguisher can protect and meet the 50 ft. rule = 5,000 sq. White Powder B, (E) ‘AB(E)’ type powder is also suitable on Class A fires. Water and Foam. This would be a rare type of fire to have at your home. FM Approved. Know what type (class) of material is burning. For extinguisher use on a Class D fire, the relative effectiveness is detailed on the extinguisher nameplate for the specific combustible metal fire for which it is recommended. Handle the three most common types of fire— those involving wood and paper, liquids and gases, and electrical equipment. Halon is an extremely clean agent that leaves no residue, making it a good agent for use around computers and other sensitive equipment. 1 About 2 Classes 3 OSHA Requirement 4 References 5 Links A fire extinguisher, flame extinguisher, or simply an extinguisher, is an active fire protection device used to extinguish or control small fires, often in emergency situations. Accordingly, is a powder ABE fire extinguisher. When looking at fire extinguishers for your workplace, you want to make sure they that are rated for fighting class B fires. Metal fires involving magnesium, sodium, potassium and sodium-potassium alloys can be successfully extinguished with this extinguisher. There are 5 main fire extinguisher types in Australia – Water, Foam, Dry Powder, CO2 and Wet Chemical.You should have the right types of fire extinguisher for your house or business premises, or you may not meet current regulations.. Class D Fires involving certain combustible metals, including potassium, ... make sure that you are using the right method or fire extinguisher to put out the fire, especially if electricity or burning fat is involved. Band Colour extinguisher type suitable for (class of fire) Comments All Red Water A Not safe on other classes of fire. Class D – a fire started by flammable metals such as sodium, potassium and lithium; Class K – kitchen fires; Types of Fire Extinguishers . Use the correct fire extinguisher type to fight the fire. Class D fires only involving combustible metals - magnesium, sodium (spills and in depth), potassium, sodium-potassium alloys uranium, and powdered aluminum. Whilst this type of fire extinguisher can be used in Class A fires, it is recommended that you have a foam or water extinguisher to tackle a fire that fits into this class. A water mist can also be used to extinguish such fires. Operation is similar to the ABC extinguisher. Fire extinguishers should tell you what type they are, and what class of fire you can use them on. Magnesium, titanium, and aluminium are examples of combustible metals. It features a soft flow extension applicator and long-range nozzle to help keep hands away from heat and to prevent toxic fume inhalation. Class D fires – combustible metals: – These are fires caused by metals and chemicals such as magnesium, or potassium. Blue Foam BA Not safe on other classes of fire. Sand also can smother the fire. Fire Protection Equipment and Systems , Fire Technology 106, Suzanne Freeman . The label colour for wet chemical fire extinguishers is Yellow. A Class D fire is characterised by the presence of burning metals. Dry Powder (Class D Fires) MET-L-X POWDER (SODIUM CHLORIDE) FIRE EXTINGUISHERS Use for Class D Fires. Extinguishers have a safety pin to prevent accidental discharge. Electrical fires – electrical equipment: – These are fires caused by electrical items, like heaters. These are kept handy at places, namely fire points, in buildings, factories, public paces or transportation. A special class K extinguisher will safely smother the fire by turning the oil into a foam. Foam agents also separate the oxygen element from the other elements. Types Of Fire Extinguishers NZ New Zealand fire extinguisher types differ from those found around the world. Class D- Combustible Metals. Of course, having a fire extinguisher that is equipped to deal with class B fires is certainly ideal, especially in a workplace environment vulnerable to Class B fires. Let's find out about the common types and colours you might need to use. The Class D graphic has a drawing of a gear on it. Class D Fires. Therefore, these fires only usually occur in industrial settings. Has a noisy and cold discharge. Class D dry powder and other agents for metal fires. Think of the word "PASS" to remember the steps. * Technically ‘Class E’ doesn’t exist. Class C, D, and K extinguishers do not have numerical ratings. Class B Fire Extinguishers For Class B Fires. What is the proper way to use a Class ABC, multi-purpose, dry chemical fire extinguisher? Water & Foam. As with Class B fires, a solid stream of water should never be used to extinguish this type because it can cause the fuel to scatter, spreading the flames. Pull the pin. The various types of fire extinguisher put out fires started with different types of fuel – these are called ‘classes’ of fire. There are four basic operating steps. contents. Choosing fire extinguisher types for the relevant class of fire could literally be the difference between life and death. Amerex B571 - 30 lb Class D Copper Fire Extinguisher MODEL B571 contains a copper extinguishing agent specially developed by the U.S. Navy for fighting lithium and lithium alloy fires. In an emergency, do you have the time to check? The copper compound smothers the fire and provides and excellent heat sink for dissipating heat. Only certain metals are flammable and examples of combustible metals include sodium, potassium, uranium, lithium, plutonium and calcium, with the most common Class D fires involve magnesium and titanium. Pull the pin, aim at the base of the fire, and sweep from side to side. It is essential that you are familiar which fire extinguisher is suitable for each class of fire.It’s simple to identify the type of fire extinguisher by the band of … Fire extinguishers are portable devices used to extinguish small fires or reduce their destruction before firefighters arrive at the scene. No single extinguisher can be used to tackle every fire, and because each type of fire extinguisher has different classes of fire on which it is effective, selection can be a minefield. These fires are very rare in domestic settings as metals require extreme temperatures to ignite. Be sure that you are trained to use a fire extinguisher before you try to fight a fire. 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