Fire Safety Chapter 6 Quiz

What must every portable fire extinguisher be labeled with?

Which material is a Class A combustible material?

What types of materials do Class B fires involve?

Class C fires involve what?

Which is a Class D combustible material?

Where is a Class K fire likely to be found?

Which method of fire extinguishment forms an oxygen-excluding soapy foam over the surface of the burning material?

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.

Which type of extinguisher is intended to be used on a Class B fire?

A Class D fire should be extinguished using a?

Which factor should be considered when selecting the appropriate type of extinguisher to use on a given fire?

After selecting the appropriate extinguisher to use on a fire, the firefighter should?

When in position to attack the fire, what is the first step that should be taken when using a portable fire extinguisher?

Wind can limit the reach of the extinguishing agent after it is expelled.

An empty portable fire extinguisher should be laid on its side.

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.