Which stage is characterized by diminishing heat and smoke as the fire declines?

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Prepare for the Edmonton Fire Rescue Services 159 Exam. Use flashcards and multiple choice questions, with hints and explanations. Ace your exam!

Multiple Choice

Which stage is characterized by diminishing heat and smoke as the fire declines?

Explanation:
Decay is the stage where the fire loses its momentum as fuel is exhausted and the heat release tapers off. With less fuel available to burn, temperatures drop and smoke production decreases, leaving behind hot embers and pockets of smoldering material rather than large flames. This stage follows the fully developed phase, and recognizing it helps with overhaul and safety, since fresh air can still trigger rekindling if residual fuels are present.

Decay is the stage where the fire loses its momentum as fuel is exhausted and the heat release tapers off. With less fuel available to burn, temperatures drop and smoke production decreases, leaving behind hot embers and pockets of smoldering material rather than large flames. This stage follows the fully developed phase, and recognizing it helps with overhaul and safety, since fresh air can still trigger rekindling if residual fuels are present.

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