中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (1): 68-73.doi: 10.16265/j.cnki.issn1003-3033.2019.01.012

• 安全工程技术科学 • 上一篇    下一篇

考虑多米诺效应的LNG事故后果定量风险分析

田宇忠 高级工程师, 范洪军 高级工程师, 涂环 高级工程师, 李俊荣 高级工程师   

  1. 中国船级社 武汉规范研究所,湖北 武汉 430022
  • 收稿日期:2018-09-10 修回日期:2018-11-13 出版日期:2019-01-28 发布日期:2020-11-23
  • 作者简介:田宇忠 (1986—),男,内蒙古呼和浩特人,硕士,高级工程师,主要从事危险货物水上安全运输、LNG水上安全应用、船舶消防等方面的研究。E-mail:yztian@ccs.org.cn。
  • 基金资助:
    工信部专项课题(工信部联装[2014]498号)。

LNG accident consequence QRA considering domino effect

TIAN Yuzhong, FAN Hongjun, TU Huan, LI Junrong   

  1. Wuhan Rules and Research Institute,China Classification Society, Wuhan Hubei 430022, China
  • Received:2018-09-10 Revised:2018-11-13 Online:2019-01-28 Published:2020-11-23

摘要: 为提高液化天然气(LNG)事故后果定量风险分析(QRA)的准确性,在分析中考虑多米诺效应对后果(个人风险)的影响。个人风险计算步骤包括确定初始事故,选择合适的模型计算初始事故产生的热辐射和超压值,计算事故周边设备的损坏概率以及多米诺场景概率;根据多米诺场景概率和人体脆弱性模型,计算目标点个人风险值;以LNG加注时火灾爆炸事故为例,计算个人风险值。通过案例分析,对比考虑多米诺效应和不考虑多米诺效应2种情况所得出的个人风险值。最终研究表明:考虑多米诺效应所得出的个人风险值明显高于不考虑多米诺效应所得出的值,且更加准确。

关键词: 液化天然气(LNG), 多米诺效应, 池火, 喷射火, 火灾爆炸, 定量风险分析(QRA)

Abstract: To improve the accuracy of QRA for the consequence of LNG accidents, the influence of domino effect on the consequence was included in analysis. The personal risk created by LNG accidents was taken as the object of study.Steps in calculating personal risk include choosing a right model for the initial accident to calculate the thermal radiation and overpressure generated by it, the damage probabilities of the equipment affected and the probabilities of domino scenario occurrences, calculating the personal risk of the target point based on the probabilities of domino scenario occurrences and the human vulnerability model, and calculating the personal risk value by taking the fire and explosion accident during LNG bunkering as an example. Based on example calculations, a comparison was made between the personal risk value obtained with and without considering domino effect. The last analysis shows that the personal risk value obtained with considering domino effect is obviously higher than that without domino effect, and so the results of QRA on the basis of domino effect are more accurate.

Key words: liquefied natural gas (LNG), domino effect, pool fire, jet fire, fire explosion, quantitative risk analysis (QRA)

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