Which phase of fire is characterized by diminishing fire?

The phase of fire characterized by diminishing fire is the decay phase. During this stage, the intensity of the fire significantly decreases due to the depletion of available fuel, diminished heat, and reduced oxygen levels. As the fire consumes the remaining combustible materials, it enters a phase where the flames become less vigorous, leading to lower temperatures and a transition toward extinguishment.

Understanding the decay phase is crucial for firefighters, as it typically indicates a shift from aggressive firefighting tactics to strategies aimed at safely extinguishing the remaining embers and preventing flare-ups. Knowledge of this phase helps in assessing fire conditions and implementing appropriate containment measures.