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What are the Four Classes of Fires based on Portable Fire extinguishers?
Wiki User
∙ 11y ago
There are actually FIVE classes of fires now defined for purpose of determining the type of extinguisher to use: A, B, C, D and K.
Wiki User
∙ 11y ago
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What class of fires are carbon dioxide fire extinguishers most commonly used on?
Carbon Dioxide based extinguishers are classified by the letters BC and ABC. They are primarily used in laboratories and should not be used in homes or businesses.
How many fire extinguishers are there?
There is one class of fire extinguisher for each of the 5 classes of fires: A,B,C,D,K. There are different mechanical types of extinguishers, based upon how their internal agent is expelled: contained pressure, external pressure cartridge, and manual pump. There are dozens of different types of agents found inside various fire extinguishers, ranging from ordinary air-pressurized water to many exotic gases and dry chemicals.
What type of fire extinguisher should you use for an electrical fire?
It is the Class C fires that invlove electrically energized equipments, and they are suppressed using CO2 extinguishers or dry chemical extinguishers. Certainly the use of water or water-based extinguishers or other water-based suppression equipment is not to be considered.
What are the different type of fire extinguishers you can have?
There is atype A (ordinary combustibles, leaving Ash),type B (flammable and combustible liquids),type C (conductive electrical equipment),type D (to put out burning metal), andtype K, used in commercial Kitchens for frying grease fires.
How fires involving metals are dealt with?
Metallic substances which can cause fires are alkali metals such as Sodium or sometimes alkaline earth metals like Magnesium. Water is not to be used under these circumstances because it will combine with the metal and form Hydrogen gas, which is very inflammable. These fires are best extinguished with sand, CO2 or bicarbonate based extinguishers.
What type of fire extinguisher should be used for extinguishing oil fire?
Class B: Class B extinguishers are used on fires involving flammable liquids, such as grease, gasoline, oil, and oil-based paints.
What fire fighting equipment do you use for nonelectrical fires?
Extinguishers rated Type A which can be water based. These are not effective (and cause more harm than good) with B and C fires which are chemical ( such as gasoline fuels, and electrical- these must be snuffed out with Co-2 or other non-water-based extinguishers. an all-purpose fire extinguisher- equally effective on A B and C blazes, has yet to be developed but some are primarily for BC fires ( gas, chemical electrical) with SOME effect on class A blazes- which are normally dousable with Water. Contact a fire-extinguisher manufacturer or supplier for more info- fire prevention is a matter for us all.
What kinds of fire should you not use a water based fire extinguisher on?
Foam spray extinguishers are not recommended for fires involving electricity, but are safer than water if inadvertently sprayed onto live electrical apparatus.
How does chemical energy affect our lives?
As it is portable it makes our travel by vehicles simple.
Can fire extinguishers pressurized release burns the skin?
Absolutely - most fire extinguishers are either chemical or CO2 based, and any one of them can burn the skin. CO2 kills fires by removing heat, and as such is extremely cold when it comes out of the nozzle - that's why you see ice crystals on it.The only type that isn't much of a danger is the old water type that has a hose on it that you turn upside down - but it isn't pressurized.
How many different fire extinguishers?
There are 6 different types of categories for extinguishers.Class A: SOLIDS such as paper, wood, plastic etcClass B: FLAMMABLE LIQUIDS such as paraffin, petrol, oil etcClass C: FLAMMABLE GASES such as propane, butane, methane etcClass D:METALS such as aluminium, magnesium, titanium etcClass E:Fires involving ELECTRICAL APPARATUSClass F:Cooking OIL & FAT etc
Where would you use a water extinnguisher?
Nowhere, there is no such thing, water does not need extinguishing! However if you mean "where would you use a water filled fire extinguisher", you would use one of these on fires other than those that are electric and petrochemical, eg on wood and paper fires, organic material - water based fire extinguishers work by taking the heat out of the com busting material so that it is below the temperature at which it burns.
