Tuesday, 18 July 2017

Fire Extinguishing Methods Used in Emergency Stages


Fire Extinguishing Methods that you learn during the fire safety training. Now the First thing you have to understand the Fire Extinguishing Methods how best to extinguish a fire. When a fire first ignites, it small enough that you can extinguish it with a fire extinguisher or fire blanket on hand. By being prepared and immediately determining the type of fire with which you are dealing, you have an even better chance of not only extinguishing the fire but also of doing it without any risking injury. If the fire is suddenly spreading, producing dangerous amounts of smoke, or taking longer than the five seconds to defeat with a fire extinguisher, then you must pull the fire alarm, evacuate the building, and call 911.

1. Using a Flame Inhibitor


The Flame inhibitors are substances that chemically react with the hot material, thus extinguishing the fire. Dry-chemical fire extinguishers work in that way and can contain monoammonium phosphate, sodium and potassium chloride and potassium bicarbonate. Vaporizing Liquids, such as Halon, also have a flame inhibiting action. Though, most of these substances have been phased out due to the high levels of toxicity.

2. Excluding Oxygen from the Fire


Smothering agents are the materials used to extinguish a fire by cutting off the oxygen supply. Foam, which is the content of fire extinguishers, It can help to cool down and isolate the fuel surface from the air, and eliminating combustion and being able to resist wind and drought disruption. However, don't use the foam on energized electrical equipment, because it is an electrical conductor. Other smothering agents include carbon dioxide, which is found in some fire extinguishers and is used in electrical equipment and sand, which is used only on small burning places.

3. Cooling the Burning Material


This method is the most commonly used to extinguish the fire for cooling the burning material. Water is widely available and the best cooling agent to use in fires involving the solid materials. By evaporating in contact with fire, water also blankets the fire, cutting off the oxygen supply. But don't apply the water to fire because hot cooking oil or fat water can cause the fire to spread.

4. Removing Fuel from the Fire



The method of extinguishing the fire is to remove the fuel supply by switch off the electrical power, isolating the issue of flammable liquids or removing the solid fuel, such as textiles or wood. In woodland fires, a fire break cut around the fire helps to isolate more fuel. In the case of gas fire, closing the main valve and cutting off the gas supply is the best way to extinguishing the fire.

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