Questions and Answers
What must every portable fire extinguisher be labeled with?
Which material is a Class A combustible material?
wood
What types of materials do Class B fires involve?
combustible liquids and gases
Class C fires involve what?
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Which is a Class D combustible material?
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Where is a Class K fire likely to be found?
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Which method of fire extinguishment forms an oxygen-excluding soapy foam over the surface of the burning material?
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In a(an) ____ extinguisher, compressed air or inert gas within the container forces the agent out of the extinguisher nozzle when the operator presses the handle.
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Which type of extinguisher is intended to be used on a Class B fire?
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A Class D fire should be extinguished using a?
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Which factor should be considered when selecting the appropriate type of extinguisher to use on a given fire?
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After selecting the appropriate extinguisher to use on a fire, the firefighter should?
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When in position to attack the fire, what is the first step that should be taken when using a portable fire extinguisher?
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Wind can limit the reach of the extinguishing agent after it is expelled.
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An empty portable fire extinguisher should be laid on its side.
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Study Notes
Fire Extinguishers Overview
- Portable fire extinguishers must be labeled to indicate the specific type of fire they are designed to combat.
- Class A fires commonly involve materials such as wood.
- Class B fires are characterized by the presence of combustible liquids and gases.
- Class C fires involve energized electrical equipment, necessitating specific extinguishing methods.
Class D and K Fires
- Class D fires include combustible materials such as sodium.
- Class K fires are predominantly found in restaurant settings, requiring specialized extinguishing techniques.
Extinguishing Methods
- Saponification is a method that forms a soapy foam, excluding oxygen from burning material.
- The stored-pressure extinguisher uses compressed air or inert gas to expel the agent through the nozzle when the handle is pressed.
Extinguisher Types and Usage
- Stored-pressure extinguishers are effective on Class B fires.
- Class D fires should be extinguished using a dry powder extinguisher, specifically designed for metal combustibles.
- Selecting the appropriate extinguisher involves considering the classification of the burning fuel.
Firefighting Procedures
- Firefighters should visually inspect extinguishers after selecting the appropriate type for the fire.
- The first step in using a portable fire extinguisher is pulling the pin and breaking the wire or seal.
- Wind conditions can affect the reach of the extinguishing agent when expelled from the extinguisher.
Maintenance and Storage
- Empty portable fire extinguishers should be stored on their side to prevent accidental discharge or damage.
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Description
Test your knowledge on fire safety and extinguisher classifications with this Chapter 6 quiz. Each question focuses on essential definitions and classifications regarding portable fire extinguishers and fire classes. Perfect for those preparing for safety training or certification.
