Podcast
Questions and Answers
Class C fires involve:
Class C fires involve:
Stored-pressure water extinguishers are used on Class _____ fires.
Stored-pressure water extinguishers are used on Class _____ fires.
When in position to attack the fire, what is the first step that should be taken when using a portable fire extinguisher?
When in position to attack the fire, what is the first step that should be taken when using a portable fire extinguisher?
Class K fires involve:
Class K fires involve:
Signup and view all the answers
A portable fire extinguisher must be labeled with the:
A portable fire extinguisher must be labeled with the:
Signup and view all the answers
Which statement about using a portable fire extinguisher is accurate?
Which statement about using a portable fire extinguisher is accurate?
Signup and view all the answers
Which statement about using a portable fire extinguisher on an incipient stage fire is accurate?
Which statement about using a portable fire extinguisher on an incipient stage fire is accurate?
Signup and view all the answers
_____ is an example of a Class D fuel.
_____ is an example of a Class D fuel.
Signup and view all the answers
Which factor should be considered when selecting the appropriate type of extinguisher to use on a given fire?
Which factor should be considered when selecting the appropriate type of extinguisher to use on a given fire?
Signup and view all the answers
Which material is a Class A combustible material?
Which material is a Class A combustible material?
Signup and view all the answers
Class A portable fire extinguishers are rated from 1-A through 40-A based upon the amount of water and:
Class A portable fire extinguishers are rated from 1-A through 40-A based upon the amount of water and:
Signup and view all the answers
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.
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.
Signup and view all the answers
An empty portable fire extinguisher should be:
An empty portable fire extinguisher should be:
Signup and view all the answers
The air-aspirating foam nozzle used with an aqueous film forming foam (AFFF) extinguisher produces:
The air-aspirating foam nozzle used with an aqueous film forming foam (AFFF) extinguisher produces:
Signup and view all the answers
Where is a Class K fire likely to be found?
Where is a Class K fire likely to be found?
Signup and view all the answers
A _____ extinguisher should be used in areas with highly sensitive computer equipment because it will cause less damage to the equipment than other extinguishers.
A _____ extinguisher should be used in areas with highly sensitive computer equipment because it will cause less damage to the equipment than other extinguishers.
Signup and view all the answers
Which extinguisher would be effective for use on a burning puddle of gasoline at a vehicle incident?
Which extinguisher would be effective for use on a burning puddle of gasoline at a vehicle incident?
Signup and view all the answers
Which is a Class D combustible material?
Which is a Class D combustible material?
Signup and view all the answers
Every portable fire extinguisher must...
Every portable fire extinguisher must...
Signup and view all the answers
Study Notes
Fire Classes and Extinguishers
- Class C Fires involve energized electrical equipment, combustible liquids and gases, regular combustibles like wood, and combustible metals.
- Class A Fires are extinguished using stored-pressure water extinguishers, specifically rated for this class.
- Class K Fires are related to cooking oils and fats.
Portable Fire Extinguisher Usage
- The first step in using a portable fire extinguisher is to pull the pin and break the wire or seal.
- Portable fire extinguishers require labels with letters/symbols showing their class ratings.
- Wind can affect the effectiveness of extinguishing agents, limiting their reach after expulsion.
Safety and Technique
- It’s crucial to operate at a distance to avoid scattering solid fuels and penetrating liquid fuel surfaces.
- One portable extinguisher should be used at a time for liquid fuel fires to enhance safety measures.
Material Classifications
- Class D fuels include combustible materials such as magnesium, which require specific extinguishing agents.
- Class A combustibles consist of organic materials like wood, which need specific types of extinguishers rated from 1-A to 40-A based on their performance in testing.
Extinguisher Types and Features
- Stored-pressure extinguishers utilize compressed air or inert gas to expel the agent when the handle is pressed.
- Aqueous film forming foam (AFFF) extinguishers produce higher quality foam with air-aspirating nozzles, suitable for fighting various fire classes.
Specialized Extinguishers
- Clean agent extinguishers are less damaging to sensitive computer equipment, making them ideal for areas with such technology.
- For gasoline fires specifically, a Aqueous Film Forming Foam (AFFF) extinguisher is the most effective option.
Maintenance and Handling
- An empty fire extinguisher should be laid on its side rather than standing upright or sent back to the manufacturer, indicating readiness for refill or disposal.
Key Environments for Fires
- Class K fires commonly occur in restaurants, highlighting the need for specialized extinguishers in the culinary environment.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on fire safety with these flashcards focused on Class C fires and portable fire extinguishers. The quiz covers essential definitions and concepts from Chapter 6 of the 7th edition, helping you prepare for fire safety situations effectively.
