A dry chemical fire extinguisher is a fire extinguisher designed to put out fires of several types. They contain chemicals that can smother flames and coat fuel with a thin layer of dust. That helps extinguish fires on the spot.
A dry chemical extinguisher sprays a very fine powder of sodium bicarbonate (NaHCO3, baking soda), potassium bicarbonate (KHCO3, nearly identical to baking soda), or monoammonium phosphate ( (NH4)H2PO4). These solids coat the fuel and smother the fire.
What are dry chemical fire extinguishers?
. A Dry Chemical Fire Extinguisher is the most common type used in Australia. It is also known as a DCP, BE, or ABE fire …
Dry chemical extinguishers put out fire by coating the fuel with a thin layer of dust, separating the fuel from the oxygen in the air. The powder also works to interrupt the chemical reaction of fire, so these extinguishers are extremely …
People Also Ask what is a dry chemical fire extinguisher
What does the dry chemical in a fire extinguisher do?
A Fuel – some sort of combustible solid, liquid or gasOxygen – to react with the fuelHeat – there must be enough heat to get the fuel above its flash point. There is paper on your desk right now that is surrounded by oxygen. …
What is the purpose of a dry chemical fire extinguisher?
ABC extinguishers are red and range in size from 5 lbs to 20 lbs on campus. …It is extremely important to identify which types of dry chemical extinguishers are located in your area.Read the labels and know their locations! …
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What fire extinguisher do you use on a chemical fire?
These extinguishers have one of the following propellant sprays:Carbon DioxideFoamDry Chemical PowderWet ChemicalClean AgentWater / FoamWater MistHalotron or Halon (no longer made for fire extinguishers)
How to inspect dry chemical or dry powder fire extinguishers?
Water and foam extinguishers, which should only be used on class A fires (fueled by ordinary flammables, such as paper or wood). …Carbon dioxide extinguishers. …Dry chemical fire extinguishers, which interrupt the chemical reactions that cause a fire. …
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DRY CHEMICAL POWDER FIRE EXTINGUISHER WHAT WHERE AND WHEN TO USE IT Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher