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

Van Hees, Patrick LU ; Wahlqvist, Jonathan LU ; Andres, Blanca LU ; Wilkens, Konrad LU ; Bhargava, Abhishek LU and Livkiss, Karlis LU (2017) 15th International Conference and Exhibition on Fire and Materials 2017 In 15th International Conference and Exhibition on Fire and Materials 2017 1. p.146-157
Abstract

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... (More)

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.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Combustible gases and liquids, Fire barriers, Fire resistance
in
15th International Conference and Exhibition on Fire and Materials 2017
volume
1
pages
12 pages
publisher
Interscience Communications Ltd
conference name
15th International Conference and Exhibition on Fire and Materials 2017
external identifiers
  • scopus:85036450886
ISBN
9781510846746
language
English
LU publication?
yes
id
82173e23-b670-484f-82de-5cde2156918a
date added to LUP
2017-12-14 07:35:43
date last changed
2018-01-07 12:28:40
@inproceedings{82173e23-b670-484f-82de-5cde2156918a,
  abstract     = {<p>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.</p>},
  author       = {Van Hees, Patrick and Wahlqvist, Jonathan and Andres, Blanca and Wilkens, Konrad and Bhargava, Abhishek and Livkiss, Karlis},
  booktitle    = {15th International Conference and Exhibition on Fire and Materials 2017},
  isbn         = {9781510846746},
  keyword      = {Combustible gases and liquids,Fire barriers,Fire resistance},
  language     = {eng},
  pages        = {146--157},
  publisher    = {Interscience Communications Ltd},
  title        = {Analysis of fire barriers with respect to fires with combustible gases and liquids},
  volume       = {1},
  year         = {2017},
}