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Fire tests with automatic sprinklers in an intermediate scale tunnel
RISE Research Institutes of Sweden, Safety and Transport, Fire and Safety.ORCID iD: 0000-0002-9340-6768
RISE Research Institutes of Sweden, Safety and Transport, Fire and Safety.ORCID iD: 0000-0001-7744-2390
RISE Research Institutes of Sweden, Safety and Transport, Fire and Safety.ORCID iD: 0000-0002-6264-7307
RISE Research Institutes of Sweden, Safety and Transport, Fire and Safety.ORCID iD: 0000-0001-9468-4586
2022 (English)In: Fire safety journal, ISSN 0379-7112, E-ISSN 1873-7226, Vol. 129, article id 103567Article in journal (Refereed) Published
Abstract [en]

A series of 1:3 intermediate scale tunnel fire tests was performed to investigate the performance of a fully automatic sprinkler system in a road tunnel. The experiments were carried in a container tunnel with scaled geometry, using wood pallets as the fire source to simulate HGV fires. The activation of the sprinklers was simulated by using thermocouples that corresponded to a given Thermal Response Index (RTI) of a sprinkler bulb or a link. A total of 12 tests were carried out with varying longitudinal velocities (0.8–1.7 m/s), sprinkler activation temperatures (68–141 °C), water densities (2.9–8.7 mm/min) and types of arrangement of the fuel. The activation times, number of activated sprinklers, maximum heat release rates and other key parameters are presented and analyzed. The results show that the water density plays a key role in the performance of the automatic sprinkler systems tested. A high tunnel ventilation velocity, low water density and low sprinkler activation temperature are not recommended. © 2022 The Authors

Place, publisher, year, edition, pages
Elsevier Ltd , 2022. Vol. 129, article id 103567
Keywords [en]
Activation, Automatic sprinkler, Model scale, Tunnel fire, Tunnel velocity, Chemical activation, Fires, Flammability testing, Sprinkler systems (irrigation), Thermocouples, Activation temperatures, Fire tests, Performance, Road tunnel, Sprinkler activation, Tunnel fires, Water density, Hose
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:ri:diva-58999DOI: 10.1016/j.firesaf.2022.103567Scopus ID: 2-s2.0-85127092273OAI: oai:DiVA.org:ri-58999DiVA, id: diva2:1668290
Note

Funding details: Svensk Kärnbränslehantering, SKB; Funding details: Trafikverket; Funding text 1: The research was sponsored by the Tunnel and Underground Safety Center (TUSC) with additional funding from the Swedish Transport Administration (STA). The financiers of TUSC are the Swedish Transport Administration (STA), the Swedish Fortifications Agency, the Swedish Nuclear Fuel and Waste Management Company (SKB), and RISE Research Institutes of Sweden. Thanks to Ulf Lundstr?m at STA who contributed extensively to the discussion and preparation for this work and the technical staff at RISE who made it possible to perform the tests.; Funding text 2: The research was sponsored by the Tunnel and Underground Safety Center (TUSC) with additional funding from the Swedish Transport Administration (STA) . The financiers of TUSC are the Swedish Transport Administration (STA), the Swedish Fortifications Agency, the Swedish Nuclear Fuel and Waste Management Company (SKB), and RISE Research Institutes of Sweden. Thanks to Ulf Lundström at STA who contributed extensively to the discussion and preparation for this work and the technical staff at RISE who made it possible to perform the tests.

Available from: 2022-06-13 Created: 2022-06-13 Last updated: 2023-06-08Bibliographically approved

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Ingason, HaukurLi, Ying ZhenArvidson, MagnusJiang, Lei

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