OS Fire Fighting and Fire Prevention

Question 1

What three elements must be present simultaneously to sustain a fire (the fire triangle)?

Accepted Answer

Heat, fuel, and oxygen

Answer

Heat, water, and oxygen

Answer

Fuel, smoke, and nitrogen

Answer

Heat, fuel, and carbon dioxide

Question 2

Which class of fire specifically involves flammable liquids such as fuel oil, diesel, and paint?

Accepted Answer

Class B

Answer

Class A

Answer

Class C

Answer

Class D

Question 3

Which type of fire extinguisher should NEVER be used on an electrical fire?

Accepted Answer

Water extinguisher

Answer

CO2 extinguisher

Answer

Dry chemical extinguisher

Answer

Halon extinguisher

Question 4

What is the primary purpose of a fire damper installed in a ship's ventilation system?

Accepted Answer

To prevent fire and smoke from spreading through ventilation ducts

Answer

To increase airflow to assist firefighting efforts

Answer

To supply fresh air to the engine room during emergencies

Answer

To cool the fixed fire suppression system components

Question 5

What is the correct technique for an ordinary seaman advancing toward a fire with a hose?

Accepted Answer

Stay low, advance slowly while maintaining a water spray curtain

Answer

Run directly toward the fire while spraying at full jet

Answer

Stand upright to maintain a clear view of the fire

Answer

Spray water on the overhead first to cool the space above

Question 6

Which fixed fire suppression system is most commonly installed in ship engine rooms?

Accepted Answer

CO2 total flooding system

Answer

Water sprinkler deluge system

Answer

Aqueous film-forming foam (AFFF) system

Answer

Dry powder suppression system

Question 7

What is the FIRST action an ordinary seaman should take upon discovering a fire on board?

Accepted Answer

Sound the general alarm and alert the crew

Answer

Immediately attempt to extinguish the fire using the nearest extinguisher

Answer

Close all watertight and fireproof doors throughout the vessel

Answer

Proceed directly to the lifeboat muster station