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Limit-Based Fire Ha...
Limit-Based Fire Hazard Model for Evaluating Tunnel Life Safety
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- Gehandler, Jonatan (författare)
- RISE,Branddynamik
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- Eymann, Loriane (författare)
- Ecole des mines d’Ales, France
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- Regeffe, Maxime (författare)
- Ecole des mines d’Ales, France
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(creator_code:org_t)
- 2014-04-30
- 2015
- Engelska.
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Ingår i: Fire technology. - : Springer Science and Business Media LLC. - 0015-2684 .- 1572-8099. ; 51:3, s. 585-614
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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visa färre...
Abstract
Ämnesord
Stäng
- Despite the simple one-dimensional symmetry of a tunnel with a longitudinal ventilation flow, risk analysis often comprises resource intensive and complex calculations. The purpose of this article is to present a simple yet precise limit-based model for assessing the possibility for a safe tunnel evacuation. To estimate the model uncertainty, fire dynamics calculations were compared to experimental data. The calculations performed well compared to experimental test data, showing an average difference between 5 and 40% in predicting the time available for evacuation, when criteria for visibility, air temperature, CO, CO2 and O2 concentration and heat flux were calculated. For steadily growing fires, visibility showed a low sensitivity to variability in input parameters with a relative difference at 9% compared to experimental data. Due to several factors it was not possible to estimate the accuracy of HCN calculations. Visualizing the hazards in a time–distance diagram revealed visibility to be the key indicator for calculating ASET for a broad set of plausible input parameters. This resulted in a simple expression for calculating ASET and consequently a simple condition for evaluating life safety.
Nyckelord
- Tunnel fire safety
- Fire dynamics
- Fire hazards
- Evacuation
- Risk analysis
- ASET/RSET
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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