A fire extinguisher‘s agent is stored within its _____. Cylinder. Which motion best accomplishes the removal of the pin and tamper seal from a portable fire extinguisher? Twisting motion. What expels the extinguishing agent from a …
A fire extinguisher’s agent is stored within its. cylinder. A loaded stream extinguisher is designed to. resist freezing. A portable fire extinguisher is bested suited for which situation. Fire in a wastebasket. A potential problem with application of …
Chapter 8: Portable Fire Extinguishers Flashcards | Quizlet
A fire extinguisher’s agent is stored within its… Resist freezing. A loaded stream extinguisher is designed to? Fire in a wastebasket. A portable fire extinguisher is best suited for which situation? Neutralization of other agents applied to the fire.
The bromochlorodifluoromethane (Halon 1211) fire extinguisher has an agent that is similar to carbon dioxide in that it is suitable for cold weather installation and leaves no residue. It is important to note that the production of Halon has been phased out because of the environmental damage it causes to the earth’s ozone.
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How is the extinguishing agent applied to the fire extinguisher?
The extinguishing agent can be applied from a fire extinguisher or by scoop and shovel. Using a scoop or shovel is often referred to as a hand propelled fire extinguisher.
What is an AFFF fire extinguisher used for?
Typical applications include operating rooms, museums, and book collections. AFFF (aqueous film-forming foam) and FFFP (film-forming fluoroprotein) fire extinguishers are rated for use on both Class A and Class B fires. As the name implies, they discharge a foam material rather than a liquid or powder.
What is the role of the liquid agent in a fire?
The liquid agent typically has a pH of 9.0 or less. On Class A fires, the agent works as a coolant. On Class K fires (cooking oil fires), the agent forms a foam blanket to prevent reignition. The water content of the agent aids in cooling and reducing the temperature of the hot oils and fats below their autoignition point.
How are multipurpose agents used on Class A fires?
Multipurpose agents are used in exactly the same manner as ordinary dry chemical agents on Class B fires. For use on Class A fires, the multipurpose agent has the additional characteristic of softening and sticking when in contact with hot surfaces.
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Understanding the Stored Pressure Fire Extinguisher Working in detail Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher