Which of the following is not recognized as a stage of fire?

In fire dynamics, the stages of fire progression are typically categorized into three main phases: the incipient stage, the growth stage, and the fully developed stage. These stages describe the development of a fire from its inception to its peak intensity.

The incipient stage is the beginning phase, where flames have not yet started to spread significantly. The growth stage is where the fire begins to expand, and the heat and combustion products increase. Finally, the fully developed stage represents the maximum intensity of the fire, where it has reached its peak.

Flashover is not classified as a stage of fire; rather, it is a phenomenon that occurs during the growth phase of a fire. Flashover is characterized by rapid fire spread due to the simultaneous ignition of combustible materials in a room or space, leading to a sudden increase in heat and fire intensity. While it is a critical event in fire development, it falls within the broader context of the growth stage, rather than being a distinct stage itself.