Abstract In large crude oil tank farm, fire is a major primary event in domino effects according to past accidents. The quantitative risk assessment of domino fire accident is a key issue for the accident prevention of large storage tank farm. The most widely used equation for the estimation of the tank's time to failure (TTF) exposed to pool fire is not suitable for 100,000 m3 external floating roof tank. The purpose of this study is to establish simplified models for the calculation of the tank TTF with respect to heat radiation intensity, filling level and the availability of safety protections under different fire conditions. The finite element transient heat transfer modeling of 100,000 m3 external floating roof tank in the case of fire scenarios was performed. The quantitative assessment of safety protection performance in delaying the tank failure under fire conditions was performed according to the simulation results. The application of the TTF equation to case-studies of crude oil tank farm showed the importance of safety protection for the prevention and mitigation of the domino effect. The TTF model provides a basis to the risk management and emergency response in large tank farm.

中文翻译：

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大型原油储罐暴露于池火的故障时间评估

摘要 在大型原油罐区，火灾是过去发生的多米诺骨牌效应的主要事件。多米诺火灾事故的定量风险评估是大型储罐区事故预防的关键问题。用于估算暴露于池火中的储罐失效时间 (TTF) 的最广泛使用的公式不适用于 100,000 立方米的外浮顶储罐。本研究的目的是建立简化模型来计算储罐 TTF 在不同火灾条件下的热辐射强度、填充水平和安全保护的可用性。100,000 m3 外浮顶罐在火灾情况下的有限元瞬态传热建模。根据仿真结果对火灾条件下延迟储罐失效的安全防护性能进行定量评估。TTF方程在原油罐区案例研究中的应用表明安全保护对于预防和缓解多米诺骨牌效应的重要性。TTF模型为大型罐区的风险管理和应急响应提供了依据。