Foam (Week 2)

Question 1

Where is foam stored for industrial and municipal uses?

Answer 1

Apparatus tanks

Question 2

What is one application used with the Venturi effect when using foam?

Answer 2

Inline educators and foam nozzle educator, and air aspirating nozzle. (They are all correct but test answer is “Air Aspirating Nozzle”

Question 3

AFFF stands for….?

Answer 3

Aqueous Film Forming Foam

Question 4

What are the advantages to the CAFS’s? (only need 3)

Answer 4

• Longer fire stream
• Lightweight hoseline
• Drain down time
• Safer fire suppression action
• Uniformly sized, small air bubbles
• Adheres to fuel surface
• Resist heat longer

Question 5

CAFS’s stand for?

Answer 5

Compressed Air Foam System

Question 6

What is High Expansion Foam?

Answer 6

Special purpose foams, have a detergent base and have a low water content, which minimizes water damage.

Question 7

What are the three applications for High Expansion Foam?

Answer 7

• Concealed spaces such as basements, mines and other subterranean spaces
• In Class A fire applications
• In fixed-extinguishing systems for specific industrial uses

Question 8

Which element is NOT needed to result in high quality foam?

Answer 8

-Foam, H2O, Mechanical airation are all things needed

VACUUM PUMP is NOT needed

Question 9

What is Class A foam and what textures do they consist of?

Answer 9

They are not proportioned as other foams. Their % can be adjusted (with-in) to achieve specific objectives.

• Dry = (thick) foam suitable for exposure protection and fire breaks require higher %
• Wet = (thin) foam that rapidly sinks into a fuel surface can be adjusted to a lower %