Answer:
Stages of combustion: flaming stages (see pictures from lab)
Pre-heating temperature of the fuel is raised to the point where gases start to volatize
Pre-ignition volatile materials in the fuel are vaporized
Flaming the ignition temperature of the fuel is reached and combustion begins
Transition fuel is partially consumed by combustion while flaming continues in portions of the fuel resulting in initiation of smoldering and smoke generation
Smoldering combustion of the fuel is essentially complete where oxygen is available and smoldering continues resulting in smoke generation
Glowing a stage of combustion where oxygen is limited
The four most important stages of combustion for prescribed burners are,
pre-ignition (fuel is about to burst into flame)
flaming active combustion
transition smoke generation begins
smoldering residual smoke production
Suppressing fire and smoke generation (segment on Suppression)
