Fire begins with a growth period which either transits to a rapid flashover period or, if that stage is not reached , starts to decay and fire ends . Growth phase is usually defined as the preflashover stage. Traditionally , compartment fires are either a fuel-controlled or ventilation controlled .
Fuel controlled fire is when the oxygen is available to combust all available fuel vapors in enclosure . Whereas ventilation controlled fire is when there is no enough oxygen to combust all the fuel available inside the enclosure.
