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首页> 外文期刊>Transactions of The Institution of Chemical Engineers. Process Safety and Environmental Protection, Part B >Conducting HAZOPs in continuous chemical processes: Part II. A new model for estimating HAZOP time and a standardized approach for examining nodes
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Conducting HAZOPs in continuous chemical processes: Part II. A new model for estimating HAZOP time and a standardized approach for examining nodes

机译：在连续化学过程中进行HAZOP：第二部分。估计HAZOP时间的新模型和检查节点的标准化方法

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摘要

The HAZOP organization phase entails two main tasks to ensure the success of the study, especially when reviewing complex continuous chemical processes (e.g., petroleum-refining processes). The first task deals with selecting the nodes, as we discussed in Part I of this paper. It addresses that task by proposing and justifying tools for and criteria on how to break a process into manageable sections that could be reviewed independently (i.e., nodes selection). Part II describes the development of a time-estimation model for planning HAZOP sessions. Its practical value was confirmed with field work and data analyses of five HAZOPs. Furthermore, we focus on optimizing the time spent in examining selected nodes. This papers also introduces a Deviations Structural Hierarchy (DSH) for treating deviations. Finally, considering the Nodes Selection Methodology (NSM) defined in paper I, the HAZOP time-estimation model (HTEM), and the Deviations Structural Hierarchy (DSH), we present the key tools, criteria, and guidelines for leading HAZOPs for highly complex processes.
机译：HAZOP组织阶段需要两项主要任务来确保研究的成功，尤其是在审查复杂的连续化学过程（例如石油精炼过程）时。正如我们在本文的第一部分中所讨论的，第一个任务是选择节点。它通过为如何将流程划分为可独立管理（即节点选择）的可管理部分提出建议和标准，从而解决了该任务。第二部分描述了用于计划HAZOP会话的时间估计模型的开发。它的实用价值已通过五个HAZOP的现场工作和数据分析得到证实。此外，我们专注于优化检查选定节点所花费的时间。本文还介绍了用于处理偏差的偏差结构层次结构（DSH）。最后，考虑论文I中定义的节点选择方法（NSM），HAZOP时间估计模型（HTEM）和偏差结构层次结构（DSH），我们介绍了针对高度复杂的领先HAZOP的关键工具，标准和指南流程。

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