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http://hdl.handle.net/10397/92426
Title: | Fire zone diagram of flame-retardant cables: ignition and upward flame spread | Authors: | Xie, Q Gong, T Huang, X |
Issue Date: | Sep-2021 | Source: | Fire technology, Sept. 2021, v. 57, no. 5, p. 2643-2659 | Abstract: | Electrical cable is a common fire risk and hazard, and once ignited, a cable fire can spread to other rooms and floors by following the direction and location of cables. This work investigated the ignition and upward flame spread over the 1-m long cable under a growing heat flux. Results showed that the flame-retardant cables could be easily ignited by a small flame after a weak irradiation (5 kW/m2) if preheated to 70°C. As the external radiation increases, the cable surface temperature increases, and the upward flame spread rate increases significantly. Once the cable surface reaches 240°C, piloted ignition can be achieved. With the combined effect of external heating (> 18 kW/m2) and smoldering, auto-ignition could be achieved once the cable sheath reaches 500 °C. Moreover, flame-retardant cable fire is intense with severe melting, dripping, swelling, and cracking. The falling cracks and dripping flow can form a pool fire to increase the fire hazard. Finally, a new fire-zone diagram with the surface temperature and critical mass flux was proposed to quantify the cable fire hazard. This work provides important information about fire behaviors of the flame-retardant cable under a real fire scene and may guide the design of fire-resistant cables. | Keywords: | Fire hazard mapping Fire spread Growing fire heating PVC/PE cable Transient heat flux |
Publisher: | Springer | Journal: | Fire technology | ISSN: | 0015-2684 | DOI: | 10.1007/s10694-021-01133-x | Rights: | © 2021 The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use (https://www.springernature.com/gp/open-research/policies/accepted-manuscript-terms), but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s10694-021-01133-x. |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Xie_Fire_Zone_Diagram.pdf | Pre-Published version | 1.72 MB | Adobe PDF | View/Open |
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