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NOTES

There four stages of fire development: incipient, growth, fully developed and decay.

Ignition is the beginning of the Incipient stage - Fuel air and heat come together.

Establish burning - Likely to enter the growth stage.

Growth - heat release rate increases - fire spread to other fuel packages is likely.

Flashover - transition event from growth to fully developed - discussed later.

Fully developed stage - relatively steady heat release rates.

Decay stage - diminishing heat release rates.