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- Organic peroxide (1) (entfernen)
The burning behaviour and thermal radiation of pool fires of organic peroxides (OP) have
been studied by several authors in the past. It was shown that mass burning rates, flame
temperatures and thus the Surface Emissive Power (SEP) of OP exceed to that of hydrocarbons
considerably. These facts lead to further investigations of even dangerous worst
case scenarios i.e. related to storage and transportation. A metal drum containing 200 l of
DTBP (Di-tert-butyl peroxide) is investigated under a surrounding wood fire. Due to a
higher heat flux to the substance, the mass burning rate reaches multiples of an equivalent
pool fire and results in several fireballs. The analyses of thermographic camera images
and radiometer measurements show higher flame lengths, higher temperatures and therefore
increased thermal radiation compared to OP pool fires. The resulting greater safety
distances for a DTBP fireball event are discussed.