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Often, those who need a fire extinguisher is an ABC fire extinguisher without much real risk of fire, they need to buy protection against the thought. With the purchase of fire extinguishers, you need to know some things about fire extinguishers to make an informed decision and have the type of fire is necessary to take into account the protection and the specific conditions you have to (computer-electronics, for example).
Classes of fire extinguishers
If youreach the fire extinguisher, there are five classes of fires: A, B, C, D and K.
have Class A – Fire extinguishers provided for a class A green triangle with an "A" in the middle, and a symbol of a garbage can and a wood stove. This fire extinguisher used to extinguish fires common fuels such as paper, cloth, rubber and some plastics (materials, leaving the burning ashes, so that the "A").
have Class B – fire extinguishers provided for Class B with a red square"B" in the middle and a symbol of a gasoline can with a pool of burning. These extinguishers are used to extinguish fires of flammable liquids such as gasoline, lubricating oils, diesel, and many organic solvents found in laboratories (found in barrels, or "B").
have Class C – Class C fire extinguishers provided for a blue circle with a "C" in the middle and a symbol of a plug with a socket burning. These are used to eliminate fire extinguisherElectrical fires are live electrical equipment, electric motors, switch boards, switches and instruments ("C" for electricity).
Class D – Class D fire extinguishers provided for a yellow pentagram (star) and a "D" in the middle and a symbol of the burning gears and bearings. These extinguishers are used to extinguish fires of metals and alloys such as titanium, sodium and magnesium.
Class K – Class K extinguishers are used specifically for cooking firesfat, grease and cooking oil ("K" for the kitchen).
You may receive one or more fire extinguishers to fire class rating rating category (BC or ABC, for example).
Fire extinguishing materials
Extinguisher use different materials for extinguishing fires. When choosing your extinguisher, you must determine to fight the type of extinguishing the fire and then the best thing for your application.
Water: Water extinguishers or APWUse pressurized water system to extinguish fires. APW extinguishers may be used) only for Class A fires (flammable items such as paper, cloth, etc., can not be used for marketing of other classes of forest fires.
Cleaning: Dry chemicals are used to remove A, B, C or D type fires. They work with a thin layer of dust on chemical material that is burning. powder extinguishers are very effective at stopping fires. However, dry chemical extinguishers can be abrasive and corrosiveelectronics and some other materials.
Carbon dioxide: Carbon dioxide works by eliminating oxygen from the immediate vicinity of the fire. Carbon dioxide fire extinguishers are always used only for B (flammable liquids) and C (electric fires) fire extinguisher. For computers, medical equipment and scientific and electronic equipment, carbon dioxide would be a better choice than chemical powder fire extinguisher, because the carbon dioxide leaves no residue.
Metal / Sand: Some of the Class D firefire extinguisher use metal or sand, such as sodium chloride (NaCl) or copper metal powder to smother the fires of metals and metal alloys.
Special Applications
Some risks require special fire extinguishers. Examples of these applications.
fire extinguishers, metal or sand are used to put out Class D (metals and metal alloys) fires:
The salt (sodium chloride – NaCl) is the most widely used material in metal / sand extinguisher. NaCl extinguisherwork well with the fires of magnesium, sodium, potassium, powdered alloy of potassium and sodium, uranium, aluminum e.
extinguishing sodium fires are sodium, potassium and sodium potassium alloys. Where the corrosion of stainless steel is a consideration, it would be this type of extinguisher is a better choice than a fire extinguisher of NaCl.
Powdered copper (Cu) metal is used for fires involving lithium and lithium alloys.
Graphite powderThe fire extinguishers are used on lithium, and include fire, high melting point metals such as titanium and zirconium.
extinguishers based on sodium bicarbonate are fires pyrophoric metal alkyls and liquids.
Halotron I is a clean agent replacement for Halon 1211, which was forbidden to use because of its ozone depleting properties. The fire extinguishers to put out fires Halotron in computer rooms, clean rooms, uses, and where telecommunications and electronicsare present. Halotron leaves no residue and is non-conductive, but is more expensive than carbon dioxide. Note that Halotron not want to be produced after 2015.
FE-36 (Clean Guard) to pay off a clean agent replacement for Halon 1211th FE-36 extinguishers are less toxic than Halon 1211 and I Halotron and reportedly have no ozone depletion potential. FE-36 is also responsible for fires in computer rooms, clean rooms used, and where the telecommunications and electronicsare present. Unlike Halotron I, FE-36 is not for the phase-out plan.
anti-magnetic fire extinguishers: Everywhere, where strong magnets are in use, must be chosen, for example, near the magnetic resonance imaging (MRI) or nuclear magnetic resonance spectrometer (NMRSs), non-magnetic fire extinguisher. The strong magnetic fields, which can be generated by this type of equipment to fly cause extinguisher steel cylinder in a room with deadly force.
It 'important to ensure properExtinguisher to the environment or potential fire hazard. You can make the difference between whether your focus is eliminated or caused a catastrophe.
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