Emergency Services Fire Safety and Firefighting 3

Question 1

What type of hose attack is used to protect exposures at a wildland-urban interface fire?

Accepted Answer

Exposure protection

Answer

Exposure protection focuses water application on structures or vegetation adjacent to the fire to prevent ignition spread.

Question 2

Which firefighting foam is approved for fighting Class B hydrocarbon fires?

Accepted Answer

AFFF (Aqueous Film Forming Foam)

Answer

AFFF creates a film over flammable liquids that excludes oxygen and suppresses vapors to extinguish Class B fires.

Question 3

What is the minimum safe distance from a wildland fire recommended for initial attack crews without escape routes?

Accepted Answer

There is no minimum — rely on safety zones

Answer

NWCG guidelines emphasize that no minimum distance is safe without an identified escape route and safety zone.

Question 4

What does 'PPV' stand for in firefighting ventilation?

Accepted Answer

Positive Pressure Ventilation

Answer

PPV uses a fan to push fresh air into a structure to remove smoke and improve visibility and air quality for firefighters.

Question 5

Which chemical is used in dry chemical fire extinguishers for Class ABC fires?

Accepted Answer

Monoammonium phosphate

Answer

Monoammonium phosphate is the active agent in multipurpose dry chemical extinguishers rated for Class A, B, and C fires.

Emergency Services Practice Test