Concept Of Fire Triangle

What Is Fire?

Fire is a chemical reaction among oxygen; it distinguishes heat and combustible material which results in the release of heat, flames, light and smoke.


Concept of Fire Triangle

Concept of Fire Triangle

Three Components are Required For Combustion To Occur:

  1. Fuel – to vaporize and burn,
  2. Oxygen – to combine with fuel steam,
  3. Heat – to lift the temperature of the fuel steam to its ignition temperature.

Fire Triangle



How Is Fire Created?

The Fire Tetrahedron

The fire triangle (above-mentioned figure) is a simple means of illustrating the three components required for the existence of fire.


However, it lacks one necessary part once attempting to know the character of fireside and therefore the effectiveness of termination mechanisms obtainable.


In particular, it does not consider the chemical reaction of the oxidation process and the chain reaction needed for a fire to continue to exist.


The fire tetrahedron (under mentioned figure) provides a better representation of the combustion process.

Process of Fire Dissemination

Heat is the main element for the dissemination of fire, through a process of conductivity of heat to expand fire. There are three ways for the conductivity of heat.

  1. Conduction,
  2. Convection,
  3. Radiation.

Conduction: Conduction is the transfer of warmth through a solid body.


Convection: Convection is the transfer of heat through the motion of heated Affair (e.g.-through the rate of smoke, hot air, heated gases produced by the fire and flying embers).


Radiation: Heat radiation is that the transfer of warmth from a supply across Associate in Nursing intervening area.  No material substance is involved.


What Are Flammable Materials?

A flammable material is a burning substance. Such as – Cotton, Jute, Cloth, Iron, Chemical agent, etc.

Types of Flammable Materials: According to the modern life burning system the flammable materials density and the variation of burning substance, there are three types of flammable materials like –

  1. Tinder Flammable Materials,
  2. Kindling Flammable Materials and
  3. Bulk Flammable Materials


Tinder Flammable Materials

The fuel that burns easily is called Tinder Flammable Materials. This type of flammable material with low density can burn at 73℉ temperature. Example: Crude petroleum oil, Ethanol, etc.


Kindling Flammable Materials

Kindling Flammable Materials are that type of fuel which has comparatively heavier density then tinder flammable materials. It can burn at (73 – 150) ℉ temperature. Example: White Spirit, Jet fuel, etc.


Bulk Flammable Materials

Bulk types of flammable materials have a higher level of density than any other flammable materials. To burn, bulk flammable materials require greater heat. It can burn at more than 150℉ temperature. Example: Clothes, Fabrics, Cotton, Carton, Yarn, etc.