Essentials of Fire Fighting 7, Chp 6 True/False

Portable fire extinguishers are often suitable for more than one class of fire.

Class C extinguisher agents are capable of conducting electricity.

A portable fire extinguisher should be used only for the fire type or types of which it is intended.

Water in water-based agents cannot be used on a Class C fire until the electricity has been shut off.

When using an Aqueous film forming foam (AFFF) extinguisher, the operator should apply foam directly on the fuel.

Clean agent extinguishers should not be used to extinguish fires in energized electrical equipment.

Dry chemical agent application may result in a cloud of airborne particulates that may reduce visibility and create respiratory problems.

Any dry powder extinguishing agent can be used on any combustion metal.

Dry powder extinguishing agent should be applied gently to avoid breaking the crust that may form over burning metal.

When using a portable fire extinguisher, the operator should approach a fire from the leeward side.

Portable Fire Extinguishers

Portable fire extinguishers are versatile and can be suitable for multiple classes of fire.
Important to use extinguishers only for the fire types they are designed to address.

Class C Extinguishers

Class C extinguisher agents do not conduct electricity, making them safe for use on electrical fires.
Water-based agents, including water itself, should not be used on Class C fires unless the electricity is shut off first.

Aqueous Film Forming Foam (AFFF)

AFFF extinguishers require the operator to apply foam gently, avoiding direct application; it should rain down or deflect off objects.

Clean Agent Extinguishers

Clean agent extinguishers are safe for use on energized electrical equipment as they are nonconductive.

Dry Chemical Agents

The application of dry chemical agents can reduce visibility due to airborne particulates and may pose respiratory hazards.
Not all dry powder extinguishing agents are suitable for all types of combustible metals; specific agents are needed for specific metals.
The application of dry powder should be done carefully to maintain any crust that forms on burning metal, preventing further ignition.

Fire Approach Techniques

Operators should approach fires from the upwind side to ensure safety, keeping the wind at their back.

Test your knowledge of fire extinguisher safety and classifications with these true/false flashcards from Chapter 6, Section B of Essentials of Fire Fighting. Learn about the types of extinguishers and their appropriate uses to enhance your firefighting skills.