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Performance of various water-based fire suppression systems in tunnels with longitudinal ventilation
Safety and Transport - Fire and Safety, RISE Research Institutes of Sweden, Borås, Sweden.ORCID iD: 0000-0001-7744-2390
Safety and Transport - Fire and Safety, RISE Research Institutes of Sweden, Borås, Sweden.
Safety and Transport - Fire and Safety, RISE Research Institutes of Sweden, Borås, Sweden.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Fire Engineering. Safety and Transport - Fire and Safety, RISE Research Institutes of Sweden, Borås, Sweden.ORCID iD: 0000-0002-7140-4737
2024 (English)In: Fire safety journal, ISSN 0379-7112, E-ISSN 1873-7226, Vol. 146, article id 104141Article in journal (Refereed) Published
Abstract [en]

Low pressure, medium pressure and high pressure water-based fire suppression systems were tested in a medium scale tunnel (scale 1:3). The primary objective was to investigate which of these systems are most effective in the suppression or control of different types of tunnel fires. The default low, medium and high pressure systems refer to full scale water flow rates of 10 mm/min, 6.8 mm/min and 3.7 mm/min, respectively. Some other water densities were also tested to investigate the effects, as well as different ventilation velocities and activation criteria. Several series of fire tests were conducted for different fire scenarios. The fire scenarios considered included idle wood pallet fires, loosely packed wood crib fires, loosely packed wood and plastic crib fires, and pool fires, with or without a top cover on the fuel load. Comparisons of the three default systems based on the three parameters: heat release rate, energy released and possibility of fire spread, show that the performance of the default low pressure system is usually the most effective based on the parameters studied. The default high pressure system usually yields results less effective in comparison to the default low pressure system. The performance of the default medium pressure system usually lies in between them. The high pressure system behaves very differently in comparison to the others, in terms of tunnel ventilation velocity, water density, operating pressure, and the presence of the top cover.

Place, publisher, year, edition, pages
Elsevier, 2024. Vol. 146, article id 104141
Keywords [en]
Tunnel fire, Fire suppression, Heat release rate, Water density, Operating pressure
National Category
Other Civil Engineering
Research subject
Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-104960DOI: 10.1016/j.firesaf.2024.104141Scopus ID: 2-s2.0-85189859035OAI: oai:DiVA.org:ltu-104960DiVA, id: diva2:1848453
Funder
Swedish Research Council Formas, 2019-00521
Note

Validerad;2024;Nivå 2;2024-04-22 (joosat);

Full text license: CC BY

Available from: 2024-04-03 Created: 2024-04-03 Last updated: 2024-04-22Bibliographically approved

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Försth, Michael

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