APWs are designed for Class A (wood, paper, cloth) fires only. Never use water to extinguish flammable liquid fires. Water is extremely ineffective at extinguishing this type of fire, and you may, in fact, spread the fire if you try to use water on it. Never use water to extinguish an electrical fire.
Which type of fire can be put out with water?
Class A fires have a solid combustible fuel source like wood or paper. You can use water, or a Class A fire extinguisher, to put out this type of fire. Class B fires, on the other hand, have a flammable liquid fuel source, like gasoline. Do not use water to put out a Class B fire as it will just spread the fire.
Can fire be extinguished by water?
Water cools and smothers the fire at the same time. It cools it so much that it can’t burn anymore, and it smothers it so that it can’t make any more of the oxygen in the air explode. You can also put out a fire by smothering it with dirt, sand, or any other covering that cuts the fire off from its oxygen source.
Why water Cannot be used to extinguish an oil fire?
Answer: Oil being lighter than water floats over it, so water cannot be used to extinguish oil fires. Moreover, as the water spreads it carries along the oil with which in turn extends the fire.
Does hot water extinguish fire?
Hot water readily converts to steam absorbing enormous amounts of heat and therefore hot water is better for fire extinguishing purposes than cold water.
How can fire burn on water?
Water is not flammable and can’t catch on fire. This is because it is made of hydrogen, which has been fully oxidized and can’t react with oxygen any further. However, the hydrogen and oxygen can fuel and increase a fire when they are separated.
Why water should not be used in B class fire?
Already the existing temperature of the atmosphere will be high due to the fire, most of the water poured will evaporate faster. So, we cannot stop the petrol fires using water.
Can fire be extinguished by ice?
Ice would be a bad way to fight a fire. You would have to wait for the ice to melt into water while all that time the fire is growing. Liquid water is the best medium for rapid extinguishment.