Analysis of fire barriers with respect to fires with combustible gases and liquids

Patrick Van Hees, Jonathan Wahlqvist, Blanca Andres, Konrad Wilkens, Abhishek Bhargava, Karlis Livkiss

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingForskningPeer review

Sammanfattning

Fires including flammable gases and/or liquids differ from typical residential fires where the fuel is mainly composed of solid combustibles. The traditional ISO 834 curve was established to represent the timetemperature curve for a fully developed fire. However for combustible gases the type of thermal exposure might be substantially different and therefore other curves have been developed such as the hydrocarbon curve (HCC) and the jetfire exposure. Knowledge on how test results from traditional ISO 834 fire test can be used to estimate the behaviour under HCC or jetfire conditions is limited. The Swedish Contingency Agency MSB initiated research on this topic to find correlation or guidance rules. For this reason, both literature studies, statistical studies, calculation and fire tests were performed. Fire tests were performed at different scales and levels, and this paper focuses mainly on a real scale fire test conducted in a 2-container set-up where one of the containers doors was replaced by a typical fire barrier. It was observed that the exposure in a real fire is different with respect to pressure, temperature levels and temperature distributions. While the real fire test had a long period of lower room temperatures before it fully developed, the unequal temperature distribution as well as the radiative heat transfer from the pool fire resulted in a fire resistance, which was close to the rating of the wall according to ISO 834. Taking into account the results of the other fire test as well as calculations, it could be concluded that heat exposure from hydrocarbon fires will lead to a substantial decrease of fire rating. On top of this it was observed that certain materials do not resist sufficiently to, for example a jet fire exposure. Hence it is important to perform a full risk analysis when choosing an appropriate fire barrier for fires, which can include combustible gases and liquids.

Originalspråkengelska
Titel på gästpublikation15th International Conference and Exhibition on Fire and Materials 2017
FörlagInterscience Communications Ltd
Sidor146-157
Antal sidor12
Volym1
ISBN (elektroniskt)9781510846746
StatusPublished - 2017
Evenemang15th International Conference and Exhibition on Fire and Materials 2017 - San Francisco, USA
Varaktighet: 2017 feb 62017 feb 8

Konferens

Konferens15th International Conference and Exhibition on Fire and Materials 2017
Land/TerritoriumUSA
OrtSan Francisco
Period2017/02/062017/02/08

Ämnesklassifikation (UKÄ)

  • Annan samhällsbyggnadsteknik

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