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城市燃气管线风险评估

, PP. 84-91

Keywords: 燃气管线,失效,风险分析,泄漏率,热辐射,个人风险

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Abstract:

城市燃气管线是城市的重大危险源,事故后果多为燃气泄漏后发生的火灾、爆炸造成人员伤亡及建筑物坍塌,其风险评估方法的研究对于燃气管线的风险管理非常重要。对管线发生断裂的事故概率及其热辐射伤害进行了分析。引入了管线的致死长度,并定义其为在此管线长度内的失效能对特定地点的人产生致死效应。在此基础上,进行了个人风险的定量计算,即管线失效率与致死长度的乘积,并基于个人风险的可接受水平确定了管线的危险距离,为抢险救援工作提供参考。

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