1 decade ago. These can be fires where cooking liquid , oil , gasoline , kerosene or paint. On Type B extinguishers, the number tells you the square footage of the fire the extinguisher can put out. Thus, a 4A will equal about five gallons of water. Class B extinguisher ratings are based on square footage. However, note that due to how quickly the CO2 gas disperses, this extinguisher is only effective at a relatively close range – about 3-8 feet from the fire. If you’re faced with putting out these types of fires, rely on the Class A and Class B size ratings. A water fire extinguisher can be used on Class A fires. Two commonly used chemicals are effective in fighting these types of fires. It will also depend on whether you’re protecting your home or using the equipment for wider commercial applications. Boats 26'-40' need to have at least two B-1 fire extinguishers on board. Fire Extinguisher Classification Class A Fires - ordinary combustibles: The most common fire, called Class A, involves burning wood, cloth, paper and plastic. The numerical rating for this class of fire extinguisher refers to the amount of water the fire extinguisher holds and the amount of fire it will extinguish. Asked By: Lilianne Tilemann | Last Updated: 30th June, 2020, They are normally rated something like 2A10BC. Closed compartments where portable fuel tanks may be stored. In fact, recent polls indicate that people may have the correct fire extinguisher for the facility it’s meant to service but still don’t understand the symbology printed on the tank. CO2: A carbon dioxide fire extinguisher works on a Class B fire by expelling CO2 to suffocate the fire, removing the oxygen necessary to keep it burning.It also helps with removing the heat, as the discharge is very cold. However, if you purchase a 50-lb canister, your employees … Class B – Class B fires are a little more dangerous, on the whole. The number before the B indicates the area that the extinguish can cover in square feet. Mathematics. Numbers with the letter B refer to how many square feet of fire the extinguisher can put out. So a "1" next to the A means the extinguisher has the equivalent of 1.25 gallons of water, a "2" equals 2.5 gallons and so on. How many pounds is a 2a fire extinguisher? This will totally depend on the length and type of your boat. “B” LIQUIDS Fire extinguishers with a Class B rating are effective against flammable liquid fires. Class B – Class B fires are a little more dangerous, on the whole. The 1 has to do with weight of the extinguisher, 1 being smaller than 11. The Coast Guard quantifies extinguisher abilities differently from UL, and they use the terms B-I and B-II. Hitting the tops of the flame with the extinguisher won't be effective. However, note that due to how quickly the CO2 gas disperses, this extinguisher is only effective at a relatively close range – about 3-8 feet from the fire. For Class A fires the Size test is conducted using a fire comprising an open latticework of wooden sticks approx 40mm square x 500mm long piled 14 high. A. SELECT ALL THAT APPLY. This code, for example 13A/55B, defines the Class (or type) of fire and the size of fire this type of fire extinguisher is capable of extinguishing. For example, you can use this extinguisher to put out wood and card fires. C & K : These letters indicate that an extinguisher can be used effectively against these fire classes. Please post your answer: LOGIN TO POST ANSWER. A factory-new Halon fire extinguisher does not require an 8130-3 because it is not considered an aircraft part. How Many Fire Extinguishers Do I Need On A Boat? If you’re faced with putting out these types of fires, rely on the Class A and Class B size ratings. This is the type of extinguisher you’ll want to use on a fire caused by oil or fuel. Still have questions? Amerex B-II Fire Extinguishers must be: Dry Chemical, ABC, or Purple K: 10 lbs or larger Carbon Dioxide (Co2): 15 lbs or larger Halon: 10 lbs or larger Halotron: 15.5 lbs or larger. Type C is intended for putting out. A is for ordinary combustibles and C is for electrical fires. Fires are classified as A,B, and C. B is for combustible liquids. Class B Fires involve flammable liquids and gases such as gasoline, kerosene, propane, etc. Class B Fires - flammable liquids: Class B fires involve flammable and combustible liquids. The letter "b" here indicate the b-1 extinguisher is effective against flammable liquid fires. Fires that originate from flammable liquids and gas can be extinguished by a class B fire extinguisher. Likewise, what does the designation B on a B 2 fire extinguisher indicate? These can be fires where cooking liquids, oil, gasoline, kerosene, or paint have become ignited. For example, a 1-A;10-B:C extinguisher is effective on Class A, B, and C fires, and a 40-B:C extinguisher isn’t rated for Class A fires, but has four times the extinguishing capacity of a 10-B:C extinguisher. A is for wood or trash. The numbers on a B or C rating will indicate the square footage that extinguisher can handle. Do you think that a black boat inspires fear to the sea? Class A: Easily the fire you’re most likely to encounter, Class A means common combustibles like paper, plastic, wood, cloth, etc. According to AC 20-42C, “Hand Fire Extinguishers for Use in Aircraft:” D.The mean of data set A is 27.95 and the mean of data set B is 30.
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