Fire extinguishers are portable devices used to extinguish small fires or reduce their destruction before firefighters arrive at the scene. 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. The Class D graphic has a drawing of a gear on it. The number in front of the A, B, or C indicates the rating size of fire the unit can extinguish. For use in environments with combustible metal hazards including magnesium, sodium, and potassium, this Class D fire extinguisher can help to fight spontaneous fires. There are several class D fire extinguisher agents available; some will handle multiple types of metals, others will not. 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. Dry Powder (Class D Fires) MET-L-X POWDER (SODIUM CHLORIDE) FIRE EXTINGUISHERS Use for Class D Fires. The copper compound smothers the fire and provides and excellent heat sink for dissipating heat. Knowing fire extinguisher types is important, so you can act fast. 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. Class D Fires. Class F Fires involve cooking oils and fats. Class D – a fire started by flammable metals such as sodium, potassium and lithium; Class K – kitchen fires; Types of Fire Extinguishers . 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. An extinguisher rated 2A is twice as powerful as one rated 1A. The label colour for wet chemical fire extinguishers is Yellow. Using water would produce hydrogen and cause an explosion. These fires are very rare in domestic settings as metals require extreme temperatures to ignite. A halon fire extinguisher uses bromochlorodifluoromethane, halon 1211, as its extinguishing agent. Water and Foam. Class D dry powder and other agents for metal fires. White Powder B, (E) ‘AB(E)’ type powder is also suitable on Class A fires. Blue Foam BA Not safe on other classes of fire. Water & Foam. * Technically ‘Class E’ doesn’t exist. Search for: Using a Dry Powder Extinguisher on a Class D Fire. To achieve a Class “A” rating, the extinguisher must be capable of putting out the wood crib, wood panel and excelsior (shredded paper) tests. Therefore, these fires only usually occur in industrial settings. Think of the word "PASS" to remember the steps. Fire Extinguisher Quiz; Interactive Fire Safety Map; Types of Fire Extinguishers. These are kept handy at places, namely fire points, in buildings, factories, public paces or transportation. This table shows the types of Fire Extinguisher suitable for each class of fire. Operation is similar to the ABC extinguisher. Water extinguishers are for Class A fires only - they should not be used on Class B or C fires. Class D: Use this type of extinguisher on flammable metals, such as aluminum, sodium, or magnesium. Pull the pin, aim at the base of the fire, and sweep from side to side. ft.. Class B 50 Feet Maximum area that one extinguisher can protect and meet the 50 ft. rule = 5,000 sq. The various types of fire extinguisher put out fires started with different types of fuel – these are called ‘classes’ of fire. contents. What is the proper way to use a Class ABC, multi-purpose, dry chemical fire extinguisher? What type of fires can be extinguished with a MET-L-X powder extinguisher? UL ratings are numbers that refer to the extinguisher’s relative power against that class of fire. 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. It has a range of about 15 feet. A special class K extinguisher will safely smother the fire by turning the oil into a foam. A Class D fire is characterised by the presence of burning metals. Has a noisy and cold discharge. Class D- Combustible Metals. Fire Protection Equipment and Systems , Fire Technology 106, Suzanne Freeman . FM Approved. Metal fires involving magnesium, sodium, potassium and sodium-potassium alloys can be successfully extinguished with this extinguisher. 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. Sand also can smother the fire. Pull the pin. Black Carbon dioxide (E), B Beware of discharge pressure. Class D fires – combustible metals: – These are fires caused by metals and chemicals such as magnesium, or potassium. Extinguishers have a safety pin to prevent accidental discharge. The UL rating for Class A and B extinguishers includes a number; the higher the number, the greater the firefighting capability. 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. Magnesium, titanium, and aluminium are examples of combustible metals. 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. Fire extinguishers contain different chemicals, depending on the application. Electrical fires – electrical equipment: – These are fires caused by electrical items, like heaters. Class C, D, and K extinguishers do not have numerical ratings. It features a soft flow extension applicator and long-range nozzle to help keep hands away from heat and to prevent toxic fume inhalation. 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. Distance To Fire Extinguisher Class A 75 Feet Maximum area that one extinguisher can protect and meet the 75 ft. rule = 11,250 sq. Holding the extinguisher by the handle with the nozzle pointing away from you, pull out the pin located below the trigger. Fire extinguishers should tell you what type they are, and what class of fire you can use them on. 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. 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 … Class B Fire Extinguishers For Class B Fires. Water and Foam fire extinguishers extinguish the fire by taking away the heat element of the fire triangle. Unit 5: Fire Extinguishers. Heat from the fire causes it to cake and form a crust excluding air and dissipating heat from burning metal. There is data showing that zirconium, uranium, titanium, and powdered aluminum fires can be controlled and extinguished with this unique extinguisher. 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. In an emergency, do you have the time to check? Let's find out about the common types and colours you might need to use. 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.. Accordingly, is a powder ABE fire extinguisher. Specialised dry powders are available to control this class of fire. D Class fires are fires involving combustible metals such as sodium, magnesium, lithium and potassium. Know what type (class) of material is burning. Foam agents also separate the oxygen element from the other elements. 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. Many homes and offices will either use general-purpose or kitchen extinguishers, but other environments, like laboratories or warehouses, might need more specific extinguishers. This would be a rare type of fire to have at your home. Band Colour extinguisher type suitable for (class of fire) Comments All Red Water A Not safe on other classes of fire. Halon is an extremely clean agent that leaves no residue, making it a good agent for use around computers and other sensitive equipment. Dry powders use a different extinguishing method than do standard dry chemicals. Class K: A Class K fire extinguisher is rated for use with cooking oil fires. (See our Home Fire Safety Fact Sheet – Fire Extinguishers for Domestic Use.) 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