chemical flame inhibition Some extinguishing agents, such as dry chemicals and halogenated hydrocarbons (Halons), interrupt the flame-producing chemical reaction and stop flaming.This method of extinguishment is effective on gas and liquid fuels, because they must flame to burn.
How does chemical flame inhibition work to extinguish fire? Select one: a. Forms oxygen-excluding soapy foam surface on burning material b. Reduces burning material’s temperature c. Interrupts the chemical chain reaction in the burning process d. …
What chemicals are used in a fire extinguisher? How do …
HFCs extinguish fires in a manner similar to CO 2 or N 2–by absorbing heat and reducing the concentration of oxygen. Even so, several different companies are marketing such HFCs as CHF 3 , C 2 HF …
4.1.1962. Inhibition of combustion reactions. A summary technical report by The National Bureau of Standards, U. S. Department of Commerce. STUDY at …
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What chemicals are in a fire extinguisher?
Fire extinguishers contain different chemicals, depending on the application. Handheld extinguishers, which are commonly sold at hardware stores for use in the kitchen or garage, are pressurized with nitrogen or carbon dioxide (CO2) to propel a stream of fire-squelching agent to the fire. The active material may be a powder such as potassium …
How do HFCS extinguish fires?
HFCs extinguish fires in a manner similar to CO2 or N2 –by absorbing heat and reducing the concentration of oxygen. Even so, several different companies are marketing such HFCs as CHF3, C2HF5, and C3HF7 for a variety of applications.
What happens to bromine and chlorine in a fire?
Indeed, bromine and chlorine atoms are released as halons decompose in the heat of the fire, establishing a catalytic cycle involving HBr and HCl; the cycle converts active hydrogen atoms to stable H2 molecules, breaking the chain reaction.
How does a handheld fire extinguisher work?
Handheld extinguishers, which are commonly sold at hardware stores for use in the kitchen or garage, are pressurized with nitrogen or carbon dioxide (CO2) to propel a stream of fire-squelching agent to the fire.
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Fire and Flame 37 – Extinguishing Fire with CO2 Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher