Questions and Answers
What is Ammonium Phosphate used for?
What does Aqueous Film-Forming Foam (AFFF) create on the surface of hydrocarbon fuels?
What does a Carbon Dioxide (CO2) Fire Extinguisher use as its extinguishing agent?
Carbon dioxide gas
What distinguishes a Cartridge/Cylinder Fire Extinguisher from other types?
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What type of fire does Class A refer to?
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What types of materials are involved in a Class B fire?
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What does a Class C fire involve?
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What type of materials are involved in a Class D fire?
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What kind of fire does a Class K extinguisher target?
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What is a Clean Agent in fire extinguishing?
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What is the function of the cylinder in a fire extinguisher?
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What is a Dry-Chemical Fire Extinguisher?
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What is the purpose of a Dry-Powder Extinguishing Agent?
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What does an Extinguishing Agent do?
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What denotes Extra (High) Hazard Locations?
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What is the definition of Fire Load?
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What is a Halogenated-Agent Fire Extinguisher?
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What chemical name corresponds to Halon 1211?
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What is the function of a Handle on a portable fire extinguisher?
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What is the role of the Horn on a CO2 type fire extinguisher?
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What does Hydrostatic Testing refer to in fire extinguishers?
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Study Notes
Fire Extinguishing Agents
- Ammonium Phosphate: Used in dry-chemical fire extinguishers; effective on Class A, B, and C fires.
- Aqueous Film-Forming Foam (AFFF): Solution forming vapor-suppressing films on hydrocarbon fuels; consists of surfactants.
- Carbon Dioxide (CO2) Fire Extinguisher: Utilizes CO2 gas; rated for Class B and C fires.
- Dry Chemical Fire Extinguisher: Employs solid particles (sodium bicarbonate, potassium bicarbonate, ammonium phosphate) for Class B and C fires, with some rated for Class A.
- Clean Agent: Nonconducting, volatile extinguishing agents that evaporate without residue.
Fire Classifications
- Class A Fire: Involves ordinary combustibles, e.g., wood, paper, cloth.
- Class B Fire: Concerns flammable and combustible liquids such as greases, oils, and solvents.
- Class C Fire: Involves energized electrical equipment.
- Class D Fire: Combustible metals like magnesium and sodium ignite these fires.
- Class K Fire: Cooking-related fires involving vegetable or animal oils and fats.
Fire Extinguisher Types and Components
- Cartridge/Cylinder Fire Extinguisher: Features separate containers for the expellant gas and extinguishing agent.
- Dry-Powder Extinguishing Agent: Typically used for Class D fires; examples include sodium chloride and graphite powders.
- Dry-Powder Fire Extinguisher: Employs powder to extinguish Class D fires by crusting and smothering.
- Halogenated-Agent Fire Extinguisher: Utilizes halogenated agents to extinguish fires.
Key Fire Extinguisher Features
- Cylinder: Storage component for the extinguishing agent.
- Handler: Used to hold and carry portable extinguishers.
- Horn: Tapered nozzle found on CO2 extinguishers for directing the agent.
Additional Concepts
- Fire Load: Measurements of combustibles in a fire area, important for assessing fire risk.
- Hydrostatic Testing: Essential safety process for pressure testing fire extinguishers.
- Film-Forming Fluoroprotein (FFFP) Foam: Combines proteins and fluorinated surfactants for vapor suppression on hydrocarbon surfaces.
- Extra (High) Hazard Locations: Spaces exceeding normal combustibles and flammables, requiring specialized fire safety measures.
Halogenated Agents
- Halogenated Extinguishing Agent: Liquefied gases that interrupt combustion reactions.
- Halon 1211: A specific halogenated agent with multipurpose ABC rating effective against flammable liquid fires, recognized by its chemical name bromochlorodifluoromethane (CBrClF2).
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Description
Explore the important definitions and concepts related to portable fire extinguishers in this flashcard quiz. Learn about various extinguishing agents and their applications across different fire classes. Perfect for students of fire safety and emergency response.