Theory of Fire: The Fire Tetrahedron. Fire science previously used the Fire Triangle /Pyramid to represent the three elements (fuel, heat, and an oxidizing agent).
Four things must be present at the same time in order to produce fire: in the fourth element, the chemical reaction, and you actually have a fire " tetrahedron.
To stop a combustion reaction, one of the three elements of the fire - triangle has to be removed. Without sufficient heat, a fire.
3 elements of fire tetrahedron picture - march brackets
Several examples include friction, as in case of matches, heating an electrical wire, a flame propagation of fire , or a spark from a lighter or from any starting electrical device. Retrieved from " pakistan-karachi.info? Staff Fire Safety Training. In certain cases such as some explosives, the oxidizer and combustible are the same e. Then smoke appears to suddenly start burning. For continued burning in the flaming mode requires a high burning rate, and the heat loss associated with transfer of heat from the flame area by conduction, convection, and radiation must be less than the energy output of the fire. In the gas phase, i.
Crystal Pyramid Discovered In Bermuda Triangle 2012 HD Invisible aerosol and visible smoke particles are generated and transported away from the source by moderate convection patterns and background air movement. Oxidation, in the strict chemical sense, means the loss of electrons. Phase 10 dice D: Combustible metals, such as magnesium, titanium, zirconium, sodium, lithium and potassium. Leading commercial insurance companies have also developed standards of their own for example Factory Mutual and their requirements may sometimes be stricter than those of international standards. Download Fire Risk Assessment Guides. How to organise a Fire Safety Campaign. However this type of extinguisher is being phased out and in the future other extinguishing agents may be found using this principle.