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Fire development

Fire development leading to flashover occurs when: (choose 1)

A. the high temperatures developed activate sprinkler heads.
B. smoldering embers restart a fire presumed to be extinguished.
C. flames from one roof jump to the next building's roof, igniting it.
D. all materials or surfaces in a space reach combustion temperature at once.
E. oxygen is reintroduced to a fire's oxygen-starved product gases causing a backdraft explosion event.

AnswerD. all materials or surfaces in a space reach combustion temperature at once. Although debate still exists on these terms, flashover is distinguished from backdraft in that backdraft is an explosion and flashover is not.
ARE 4.0 exam prep: BDCS

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