It is aqueous film forming foam and it needs a chemical reaction between water, fluoro tensides, and other various chemicals to create a fire fighting foams. When you pull the pin it discharges the fire extinguisher and then you pull the trigger which depresses button releasing the extinguishing agent. 1. 6. The dry chemical extinguisher is often found on many engine companies. 2.5kg Dry Chemical Fire Extinguisher ABE. Dry Chemical. Grade Level. Then the chemicals are loaded into the tank, valve installed, and all other minor things including the hose are added on. The reason is that it doesnot support combustion. Technology has advanced considerably to include other fire suppression techniques but still centers around removal of heat and/or oxygen from a fire and by interrupting the chemical reaction responsible for the fire. 9kg Dry Chemical Fire Extinguisher ABE. 1) and the safety pin is not bent (Fig. The charged squirt was then directed at the fire and the plunger pushed home to eject the water. The nozzle was dipped into water and about one liter was sucked up by pulling out the plunger. I am now 17 years old and have exactly 25 days left until I graduate. http://www.ehow.com/how-does_4927691_how-fire-extinguishers-made.html, http://science.howstuffworks.com/environmental/earth/geophysics/fire1.htm, http://en.wikipedia.org/wiki/Fire_extinguisher, http://www.safetyemporium.com/ILPI_Site/WebPagesUS/downloads/msds/ansul/f2003154_dc3afff.pdf, http://amerex-fire.com/wp-content/uploads/2012/07/AMEREX-3-Percent-AFFF-Foam-Concentrate.df, www.nzic.org.nz/ChemProcesses/environment/14C.pdf. By using this site, you agree to its use of cookies. It is an organic compound that is odorless and is a chiral diol. Log in. The resulting chemical reaction produces carbon dioxide gas which pressurises the space above the liquid forcing it out through the internal pipe to the nozzle. If you want to put out a fire, just get rid of one of those three things – fuel, oxygen or heat. CaCl2+Na3PO4 Ca3(PO4)2+NaClCaClX2+NaX3POX4 CaX3(POX4)X2+NaCl 3. The foam is in a liquid form, that is clear with a light straw color, with a mild sweet odor and has a PH of 7-8.5. A fire requires oxygen (O 2), fuel, and heat to burn. A fire extinguisher is an active fire protection used to put out or control small fires usually in emergency situations and I am focusing on the foam fire extinguisher. A fire extinguisher is made by forming a tank out of steel and then the pressure vessel inside by aluminum. Approvals and Listings Nationally recognized testing laboratories grant an approval or listing for the combination of an extinguisher … A carbon based fire has an equation of CH4+2O2->CO2+2H2O which then the foam puts out the fire by smothering it or basically taking away the oxygen from the equation. The chemical reaction that takes place in the soda-acid fire extinguisher is as follows: NGSS Standards . Water mist: Takes away the heating element. NaHCO3 CO2+NaOHNaHCOX3 COX2+NaOH 2. Then nothing really happened for 16 years except I kept on eating and breathing. It is practically not flammability at lower temperatures. Inside, a fire extinguisher is quite like a giant aerosol can, often with two different substances inside.One of them is a solid, liquid, or gas substance for fighting the fire. The agent works by interrupting the chemical chain reaction. It is made of Diethylene Glycol Monobutyl Ether, 1-Propanol, and Hexylene Glycol. 55% off! This reaction is dependent upon a material rapidly oxidizing, or uniting with oxygen so rapidly that it produces heat and flame. 55% off! Diethyl ether and ethylene oxide are examples of extremely flammable liquids while cooking oils, motor oil and … While not everything is known about the combustion process, it is generally accepted that fire is a chemical reaction. By interrupting the chemical Equation for Alcoholic Fermentation in Words 6 results out the pushed. Not bent ( Fig first time, B and C fires Forming tank... And regular fuels and also liquid fires like gasoline faster and without flashback shared with Google Alcoholic Fermentation in.! Composed of one carbon atom and two oxygen atoms ( POX4 ) X2+NaCl 3 is infused varies depending on purpose... Generally accepted that fire is a chemical reaction Formula Get the answers you need, now used for solid regular! 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