An Experimental Study for Deriving Fire Risk Evaluation Factors for Cables in Utility Tunnels

IF 3 3区 农林科学 Q2 ECOLOGY
Hyun Jeong Seo, Yon Ha Chung, Tae Jung Song
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Abstract

In this study, we performed three tests to measure the fire-retardant performance of power cables installed in utility tunnels. The standards we applied for testing are ISO 5660-1, NES 713, and IEEE 1202. Specifically, we performed a cone calorimetric analysis, calculated the toxicity index, and measured the flame spread length on material surfaces. Even though the same fire-retardant chemical composites were applied, various differences in fire-retardant performance were found depending on the chemical properties of the cable sheath and insulation. We also found that gaseous substances generated during the burning of cables can serve as important risk assessment factors in fires. We determined that, in addition to the heat generated when the cable burns, the toxic gases emitted at this time can also be a risk factor. This is because it is important to consider any potential risk to a person entering as part of an initial response to an event or accident involving cables installed in utility tunnels. Moreover, in the event of a fire in the cable, there is a risk of hazardous substances flowing into the city center as toxic gases are released. Therefore, we determined that the risk of hazardous gases emitted during cable fire should be reflected in the fire-retardant performance standard.
公用工程隧道电缆火灾危险性评价因子的实验研究
在这项研究中,我们进行了三项测试,以测量安装在公用工程隧道中的电力电缆的阻燃性能。我们用于测试的标准是ISO 5660-1、NES 713和IEEE 1202。具体而言,我们进行了锥形量热分析,计算了毒性指数,并测量了材料表面的火焰蔓延长度。尽管使用了相同的阻燃化学复合材料,但根据电缆护套和绝缘层的化学性能,阻燃性能存在各种差异。我们还发现,电缆燃烧过程中产生的气体物质可以作为火灾的重要风险评估因素。我们确定,除了电缆燃烧时产生的热量外,此时排放的有毒气体也可能是一个风险因素。这是因为,作为对涉及安装在公用工程隧道中的电缆的事件或事故的初步响应的一部分,考虑人员进入的任何潜在风险是很重要的。此外,如果电缆发生火灾,由于有毒气体的释放,危险物质有流入市中心的风险。因此,我们确定电缆火灾过程中排放的有害气体的风险应反映在阻燃性能标准中。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Fire-Switzerland
Fire-Switzerland Multiple-
CiteScore
3.10
自引率
15.60%
发文量
182
审稿时长
11 weeks
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