Fire Extinguisher & Emergency Response Flashcards

A CO2 extinguisher is least effective outdoors because:

Answer: Wind disperses the CO2 gas before it can smother the fire

CO2 is a gaseous agent that wind can rapidly disperse, significantly reducing its fire-suppression effectiveness in outdoor or windy environments.

Which extinguisher class rating covers fires in energized electrical equipment?

Answer: Class C

Class C ratings indicate the extinguishing agent is non-conductive and safe for use on fires involving live electrical equipment.

When the fire guard calls 911 during a torch operation fire, which information should be given FIRST?

Answer: The exact location and address of the fire

Dispatchers need the exact location first so they can begin routing units while gathering additional details.

If a fire spreads beyond what a portable extinguisher can control, the fire guard must:

Answer: Immediately evacuate and ensure others leave the area

Once a fire is beyond the capacity of a portable extinguisher, evacuation of all personnel is mandatory and no further extinguishment attempts should be made.

For torch operations on a roof, how long must the fire guard maintain watch after work is completed?

Answer: 60 minutes

FDNY requires a fire guard to maintain a watch for at least 60 minutes after torch operations on a roof have ceased.

Which type of fire extinguisher should NEVER be used on a magnesium or titanium fire?

Answer: Water extinguisher

Water reacts violently with burning metals such as magnesium, potentially causing explosive spattering and spreading the fire.

The primary role of the fire guard during torch operations is to:

Answer: Monitor the work area continuously and respond to fire emergencies

The fire guard's primary duty is continuous monitoring of the work area for fire hazards and responding immediately to any fire that starts.