Fire Safety and Extinguishers Quiz

Questions and Answers

What are the three components that make fire?

Heat, fuel, and oxygen.

What class of fire has flammable liquids as fuel?

Class B.

What does a class C fire involve?

Energized electrical equipment.

What type of fire involves ordinary combustible materials such as paper and wood?

Class A. Signup and view all the answers

How are fire extinguishers labeled to indicate what type of fire they are appropriate for?

Pictograms and class of fire they are appropriate for. Signup and view all the answers

What indicates that a fire extinguisher is NOT appropriate for a specific class of fire?

The pictogram for the class will be included with a black background for 'NO' and a red slash. Signup and view all the answers

Which types of fire extinguishers are appropriate for use aboard aircraft?

Water and halogenated agent. Signup and view all the answers

Halogenated Agent extinguishers are considered to be more effective and have a greater range than Carbon Dioxide extinguishers.

True Signup and view all the answers

Which type of extinguisher should ONLY be used on Class D fires?

Dry powder. Signup and view all the answers

Where would you find the record of the last visual inspection conducted on a fire extinguisher?

The inspection tag log on the extinguisher. Signup and view all the answers

How often is hydrostatic testing required for Halon extinguishers?

12 years. Signup and view all the answers

When should a rechargeable fire extinguisher be recharged?

After use or when otherwise needed. Signup and view all the answers

For a typical workplace, what should be the maximum travel distance to a Class A or D fire extinguisher?

75 feet. Signup and view all the answers

What is the minimum number of fire extinguishers that all aircraft are required to carry?

A fire extinguisher in the flight deck. Signup and view all the answers

How often should the fire extinguisher aboard aircraft be checked?

During every preflight inspection. Signup and view all the answers

For aircraft with interior access to the cargo compartment, where should the fire extinguisher be located?

At the interior of the entrance. Signup and view all the answers

What does the P in P.A.S.S. stand for?

Pull the pin at the top of the extinguisher. Signup and view all the answers

What does the A in P.A.S.S stand for?

Aim the nozzle or hose of the extinguisher at the base of the fire. Signup and view all the answers

If you encountered a fire in your hangar, when should you NOT try to fight the fire?

All of the answers are correct. Signup and view all the answers

Should an inflight fire occur, what is the first step the pilot(s) should take?

Immediately don protective equipment, such as smoke goggles and oxygen masks. Signup and view all the answers

During a flight, you smell smoke and fumes but do not see an obvious fire. How should you locate the hidden fire?

Search the aircraft using the back of your hand to feel for heat behind wall panels and doors. Signup and view all the answers

The biggest hazard caused by a fire is the fire itself.

False Signup and view all the answers

Why are vapors considered dangerous during a fire?

It may be toxic or poisonous when inhaled or absorbed through the skin. Signup and view all the answers

Impaired judgment occurs when oxygen drops to what percentage?

17 percent. Signup and view all the answers

What is the most common cause of fire on an aircraft?

Electrical wiring and failure of electrical components. Signup and view all the answers

When discharging a Halon fire extinguisher on an unpressurized aircraft, how low should the aircraft descend?

8,000 feet or as low as practical. Signup and view all the answers

What is the term for the overheating of a lithium-ion battery causing flames and smoke?

Thermal runaway. Signup and view all the answers

In the recommended procedure to put out a lithium battery fire, what should be done after extinguishing the fire?

Cool down the device and let rest untouched for 15 minutes. Signup and view all the answers

Study Notes

Components of Fire

Fire requires three essential components: heat, fuel, and oxygen, in addition to a chain reaction.

Classes of Fire

Fires are categorized based on fuel types:
- Class A: Ordinary combustibles like paper and wood.
- Class B: Flammable liquids.
- Class C: Involves energized electrical equipment.
- Class D: Typically involves combustible metals.

Fire Extinguishers: Labeling and Use

Fire extinguishers are labeled with pictograms and class designations to indicate appropriate fire types.
Pictograms with a black background and a red slash denote inappropriateness for certain fire classes.
Water and halogenated extinguishing agents are suitable for aircraft.

Halogenated Agents vs Carbon Dioxide

Halogenated Agent extinguishers are more effective with a greater range than Carbon Dioxide ones, and they leave no residue, making them suitable for low temperatures.

Fire Extinguisher Maintenance

Dry powder extinguishers are specifically designed for Class D fires.
Visual inspection records of fire extinguishers are found on the inspection tag log.
Hydrostatic testing for Halon extinguishers is required every 12 years.
Recharge extinguishers post-use or when needed.

Accessibility and Regulations for Aircraft

In a typical workplace, travel distance to a Class A or D extinguisher should not exceed 75 feet.
All aircraft must carry at least one fire extinguisher within the flight deck.
Fire extinguishers aboard aircraft should be checked during each preflight inspection, ensuring they're secured and ready.

Fire Response Protocols

Fire extinguishers should aim at the fire's base where the fuel burns.
If faced with a hangar fire, avoid attempting to extinguish it under certain unsafe conditions.
In the event of an inflight fire, pilots should immediately don protective gear.

Hidden Fires and Risks

To locate hidden fires during flight, feel for heat behind walls and doors.
Most fatalities from fire are due to smoke inhalation rather than burns; hence, smoke poses significant danger.
Fire vapors may be toxic or poisonous when inhaled or absorbed.

Implications of Low Oxygen Levels

Oxygen levels dropping to 17% can impair judgement in emergency situations.

Causes of Aircraft Fires

The leading cause of fires on aircraft is electrical wiring and component failures.

Special Cases: Lithium Ion Battery Fires

Overheating of lithium-ion batteries may lead to thermal runaway, producing flames and heavy smoke.
After extinguishing a lithium battery fire, cool down the device and allow it to rest for 15 minutes to prevent re-ignition.

Descent Recommendations

To increase oxygen concentration during a fire aboard an unpressurized aircraft, descend to 8,000 feet or as low as practical.

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Description

Test your knowledge on the essential components of fire, the classifications of fires based on fuel types, and the proper use and maintenance of fire extinguishers. This quiz covers important aspects of fire safety that everyone should understand.