The Fire Triangle is a fundamental concept in fire science that explains the three essential elements required for a fire to exist.

A fire can only start and continue when all three elements are present simultaneously.

Three Elements of the Fire Triangle

Heat

Heat provides the energy required to ignite and sustain combustion.

Common heat sources on board ships include:

Open flames

Hot surfaces

Electrical equipment

Friction and sparks

Without sufficient heat, ignition cannot occur.

Fuel

Fuel is any material capable of burning.

Examples of fuels on ships:

Solid materials (wood, paper, textiles)

Flammable liquids (oil, fuel, solvents)

Gases (LPG, vapours)

Without fuel, a fire cannot be sustained.

Oxygen

Oxygen supports the combustion process.

Sources of oxygen:

Atmospheric air

Ventilation systems

Oxidizing substances

Without oxygen, combustion is not possible.

Principle of Fire Control

Fire prevention and firefighting are based on breaking the Fire Triangle.

A fire can be extinguished by removing any one of the three elements:

Cooling → Removes Heat

Smothering → Removes Oxygen

Starvation → Removes Fuel

Importance in Fire Fighting

Understanding the Fire Triangle helps crew members:

Identify fire risks

Select appropriate firefighting methods

Apply correct extinguishing techniques

Prevent re-ignition