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首页> 外文期刊>Ocean Engineering >Quantitative risk assessment of fuel preparation room having high-pressure fuel gas supply system for LNG fuelled ship
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Quantitative risk assessment of fuel preparation room having high-pressure fuel gas supply system for LNG fuelled ship

机译：用于LNG燃料船的具有高压燃料气供应系统的燃料准备室的定量风险评估

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摘要

This paper systematically investigates the safety of fuel preparation room containing high pressure fuel gas supply systems in order to identify shortcomings and practical gaps of the current regulations. A very large ore carrier of 300,000 DWT was taken as an example and the LNG fuel system was designed for it. An event tree analysis was conducted on the fuel system to identify events that can lead to an explosion. Along with a fault tree analysis model, generic failure data from various sources were used to estimate frequency of potential explosion. For the consequence analysis computational fluid dynamics and finite element analysis software were used to estimate the impact of explosions on the boundary structure of the fuel preparation room. Research findings show that the current rules and regulations concerning the safety of fuel preparation rooms and that the high pressure fuel gas supply system is subject to an unacceptably high level of explosion risk with the frequency of explosion as high as 3.13E-04 per year. The impact of an explosion within the fuel preparation rooms can cause stresses in excess of allowable stress in the bottom structure if not being strengthened. It is proposed that special attention is given to the structural design and/or enhanced safe measures for the FPRs and the relevant regulations updated to account for this.
机译：本文系统地研究了包含高压燃气供应系统的燃油准备室的安全性，以找出当前法规的缺陷和实际差距。以一个30万载重吨的超大型矿石运输船为例，并为此设计了液化天然气燃料系统。在燃油系统上进行了事件树分析，以识别可能导致爆炸的事件。除故障树分析模型外，还使用了来自各种来源的通用故障数据来估计潜在爆炸的频率。对于结果分析，使用计算流体动力学和有限元分析软件来估计爆炸对燃料制备室边界结构的影响。研究结果表明，当前有关燃料准备室安全的法规和规章以及高压燃料气体供应系统承受着不可接受的高爆炸风险，爆炸频率每年高达3.13E-04。如果不加强，在燃料准备室内爆炸的冲击会导致底部结构中的应力超过允许的应力。建议特别注意FPR的结构设计和/或加强的安全措施，并为此更新相关法规。

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