油罐事故泄漏大气环境风险评价

Quantified Analysis on Environmental Risk Assessment for Accidental Leaking of Gasoline Tank

结合广州某企业建设项目的环境影响评价工作,展开了汽油储罐泄漏的环境风险评价定量分析。通过对油品泄漏后进入环境后的相关行为特征的分析,对所产生的汽油团扩展范围及其危险半径进行了定量模拟计算。计算表明,该项目的事故泄漏危害是较为严重的,汽油泄漏速度为1179.25kg/s,质量蒸发速度约为8.0kg/s,距球罐35m范围内均应撤离人群。上述环境事故后果计算结果为油品储罐突发性泄漏事故的应急处理和决策提供了科学依据。

Based on the environmental risk assessment for a construction project in Guangzhou city, the paper made a quantified analysis of accidental leaking of gasoline storage tank. It analyzed the features of the related behavior of the liquid gasoline when it leaked into the atmosphere and then made quantified calculation for the extending area and hazardous radius of the generated gaseous gasoline mass. The calculation proved that the accidental leaking will be serious, for example, the leak speed of the liquid gasoline is 1179.25 kg/s and the quality evaporation speed is 8.0 kg/s. The population within 35 meters apart from the gasoline storage tank must be evacuated. The results of the consequence assessment provide scientific basis for emergency treatment and decision-making for accidental leaking of gasoline storage.