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Rollover (also known as flameover) is a stage of a structure fire when fire gases in a room or other enclosed area ignite. Since heated fire gases, the product of pyrolysis, rise to the ceiling, this is where a rollover phenomenon is most often witnessed. Visually, this may be seen as flames "rolling" across the ceiling, radiating outward from the seat of the fire to the extent of gas spread. Rollover is not the same as flashover, although it may precede it, and the terms may be confused. In the case of rollover, only gases present in the room, not the room contents, ignite.

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  • Eine Rauch(gas)durchzündung (engl. rollover oder flameover) ist das plötzliche Durchzünden und Abbrennen von Pyrolysegas. Dieses Gasgemisch entsteht durch Hitzeeinwirkung oder Verbrennung. Bei einer Rauchgasdurchzündung, primär in dedizierten Räumen, ist genug Sauerstoff für die Zündung vorhanden. Dies unterscheidet die Rauchdurchzündung von der Rauchgasexplosion (engl. backdraft), für deren Entzündung dem Rauchgas zunächst weiterer Sauerstoff zugeführt werden muss. Hauptbestandteile des Rauchgases sind Pyrolysegase. (de)
  • Rollover o Flameover es el término con el que se denomina un fenómeno que se observa en incendios en los que la capa de gases producto de la combustión acumulados bajo el techo se inflaman de forma que las llamas corren por el techo. Este fenómeno se considera el paso previo para alcanzar las condiciones necesarias para que se produzca un flashover o combustión súbita generalizada ya que supone un aumento significativo de la radiación. (es)
  • Rollover (also known as flameover) is a stage of a structure fire when fire gases in a room or other enclosed area ignite. Since heated fire gases, the product of pyrolysis, rise to the ceiling, this is where a rollover phenomenon is most often witnessed. Visually, this may be seen as flames "rolling" across the ceiling, radiating outward from the seat of the fire to the extent of gas spread. Rollover is not the same as flashover, although it may precede it, and the terms may be confused. In the case of rollover, only gases present in the room, not the room contents, ignite. (en)
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  • Eine Rauch(gas)durchzündung (engl. rollover oder flameover) ist das plötzliche Durchzünden und Abbrennen von Pyrolysegas. Dieses Gasgemisch entsteht durch Hitzeeinwirkung oder Verbrennung. Bei einer Rauchgasdurchzündung, primär in dedizierten Räumen, ist genug Sauerstoff für die Zündung vorhanden. Dies unterscheidet die Rauchdurchzündung von der Rauchgasexplosion (engl. backdraft), für deren Entzündung dem Rauchgas zunächst weiterer Sauerstoff zugeführt werden muss. Hauptbestandteile des Rauchgases sind Pyrolysegase. (de)
  • Rollover o Flameover es el término con el que se denomina un fenómeno que se observa en incendios en los que la capa de gases producto de la combustión acumulados bajo el techo se inflaman de forma que las llamas corren por el techo. Este fenómeno se considera el paso previo para alcanzar las condiciones necesarias para que se produzca un flashover o combustión súbita generalizada ya que supone un aumento significativo de la radiación. (es)
  • Rollover (also known as flameover) is a stage of a structure fire when fire gases in a room or other enclosed area ignite. Since heated fire gases, the product of pyrolysis, rise to the ceiling, this is where a rollover phenomenon is most often witnessed. Visually, this may be seen as flames "rolling" across the ceiling, radiating outward from the seat of the fire to the extent of gas spread. Rollover is not the same as flashover, although it may precede it, and the terms may be confused. In the case of rollover, only gases present in the room, not the room contents, ignite. (en)
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  • Rauchdurchzündung (de)
  • Rollover (es)
  • Rollover (fire) (en)
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