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首页> 外文期刊>Journal of structural fire engineering >A risk-based approach for structural assessment against fire considering escalation and passive fire protection (PFP) optimization
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A risk-based approach for structural assessment against fire considering escalation and passive fire protection (PFP) optimization

机译：考虑升级和被动防火（PFP）优化，防止火灾的结构评估的基于风险方法

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Purpose - Accidental loadings such as fire constitute a great majority of potential and actual fatalities in both onshore and offshore installations. In order to prevent human loss and for a safe design of an asset, the risk of fire loading needs to be quantified, in terms of both probability/frequency and consequence aspects. In this paper the authors propose a novel risk-based approach for the assessment against accidental fire loading. Design/methodology/approach - In a conventional passive fire protection (PFP) analysis using ductility level analysis (DLA), fire loads are deterministically applied to a structure whose response is then analyzed. The initial PFP scheme is developed based on the analysis and then optimized. This approach is sometimes misinterpreted as a "risk-based" approach; however, it does not take into account the frequency aspect of the risk assessment In a risk-based PFP analysis using DLA, fire scenarios are developed in a particular target zone. Then DLA is performed to determine the structural consequence. If personnel safety is of interest, the consequence of the structure is then linked to individual risk (IR) to determine fatalities. The amount of PFP to be applied on the structure is fully based on the risk that is produced by the fire scenarios in target zones. Findings - A new perspective on safe design of onshore/offshore structures for accidental loadings is outlined to estimate the associated risk to potential targets such as personnel as well as asset. The proposed assessment methodology will contribute toward identifying the mitigation measures and safety-critical procedures and equipment and toward a safer design. Originality/value - This paper presents a new perspective in a safer design of onshore and offshore structures for a fire accidental loading based on risk calculation. Risk is defined as a combination of the frequency and consequence. An event frequency analysis is carried out to determine how often one should expect the event to occur. A consequence analysis is carried out to determine the severity levels of the event In a risk-based consequence analysis, the severity levels are fully determined based on the risk associated with the event The proposed novel risk-based assessment methodology against accidental fire loading contributes toward fully understanding the risk from an impact to personnel and to asset perspectives and leads toward safer and optimal design.
机译：目的 - 诸如火灾之类的意外装载构成陆上和海上设施中的大多数潜力和实际死亡。为了防止人类丢失和安全设计，在概率/频率和后果方面，需要量化火灾载荷的风险。本文提出了一种新的基于风险的风险方法，用于评估意外火灾荷载。设计/方法/方法 - 在使用延展性水平分析（DLA）的传统被动防火（PFP）分析中，火灾载荷确定地应用于其响应的结构。初始PFP方案是基于分析开发的，然后优化。这种方法有时被误解为“基于风险的”方法;但是，它没有考虑使用DLA的基于风险的PFP分析中风险评估的频率方面，在特定目标区域中开发了火灾情景。然后进行DLA以确定结构后果。如果人员安全是感兴趣的，那么结构的后果与个人风险（IR）相关联，以确定死亡率。待应用于该结构的PFP的量完全基于目标区域的火灾情景产生的风险。调查结果 - 概述了欧语/海上结构安全设计的新视角，概述了估计人员和资产等潜在目标的相关风险。拟议的评估方法将有助于确定缓解措施和安全关键程序和设备以及更安全的设计。原创性/价值 - 本文提出了一种基于风险计算的火灾意外装载的陆上和海上结构的更安全设计的新视角。风险被定义为频率和后果的组合。执行事件频率分析，以确定应该期望发生事件的频率。进行后果分析以确定事件在基于风险的后果分析中的事件的严重程度水平，严重程度基于与事件相关的基于风险的基于风险的评估方法与意外火灾负荷有关的风险来充分确定充分了解对人员的影响和资产观点的风险，并导致更安全和最佳的设计。

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