What is dry chemical fire extinguisher? Fire is an incident that resulted in losses of both material and non material. In the handling of the fires, there are a few things to note, among other types of fires. The fire itself divided into classes A, B, and C. Class A Fire is the kind of fires that occur on paper, cloth, plastic, and wood. Class B fires are the kind of fires that occur on liquid fuels and gas.
The class C fires are the kind of fires that occur due to an electric current. When we already know the type of fire that took place. Then, we can determine the type of fire extinguisher put out the fire. An error in the determination of the fire extinguisher can be fatal. The result not the fire that extinguished but the fires grow bigger. This needs to be avoided.
Dry chemical fire extinguisher ABC
Water used as a medium for putting out a fire class A. Basic principles of water gives cold effect on the heat source. The heat source is one of the three conditions of the formation of fire until the fire will be extinguished gradually. For class B fires, namely fires that occur in fuel and gas. We must know water cannot be used as a fire extinguisher agent because water will only spread the fire point.
Therefore, the right tools to put out the fire in this class is the foam. Water and foam cannot extinguish the fire class C that happens from electricity because water is a strong electrolyte can conduct electricity. The foam is a component of a mixture between air and froth, foam, therefore cannot use as a fire extinguisher agent for class C.
In anticipation of the third type of fire above. Then, any buildings such as shopping centers, museums, theaters and like should prepare three fire extinguishers. Based on the background above, the factory created fire extinguishers that can use to extinguish three class of fires called dry chemical fire extinguisher
Dry chemical fire extinguisher use
The working principle of the dry chemical fire extinguisher is to decide on one of the three terms of the fire formed. A dry chemical fire extinguisher will cover material that burned. So, the oxygen can not supply at least the fire will gradually die out. The chemical powder used in the form of fine particles such as sodium bicarbonate, potassium bicarbonate, or ammonium phosphate-based.
The above chemical is a major component and the additional components that used as a compliment. Also, the moisturizing ingredients and chemicals that reduce the viscosity of the powder in order to easily flow. Basically, the dry chemical fire extinguisher used chemical inert powders and silica powder mixed with sodium bicarbonate as agent. Inside the tube, there is a small tube that serves to store the carbon dioxide gas. The powder comes out will soon cover the burning material so that oxygen can not enter fire area.
If spraying a dry chemical fire extinguisher types, note on the perimeter of the room point of fire. Try no corrosive tools when exposed to the dry chemical fire extinguisher. Also, the spraying may result in many health disorders particularly respiratory
Below are some of the chemicals that recommended for dry chemical fire extinguisher agent:
– 97% Sodium bicarbonate
– Magnesium stearate 11/2%
Magnesium carbonate – 1%
– Carbonic Trikalsium ½%