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An MILP model for safe multi-floor process plant layout using the Domino Hazard Index
Process Safety and Environmental Protection ( IF 7.8 ) Pub Date : 2021-04-01 , DOI: 10.1016/j.psep.2020.09.029
Jude O. Ejeh , Songsong Liu , Lazaros G. Papageorgiou

Abstract In this paper, an optimisation-based approach to obtain safe multi-floor process plant layout designs using the domino hazard index (a sub-index of the integrated inherent safety index) is presented. A mixed integer linear programming (MILP) model is proposed to obtain the economically optimal multi-floor layout design considering connection by pipes, horizontal and vertical pumping of process fluids, purchase of land, fixed and area-dependent construction of floors, the financial risk associated with hazardous events and their escalation potential, and the installation of passive protection devices. Hazardous events such as pool fires, jet fires, flash fires, fireballs and blast waves resulting from explosions are considered using a novel and more realistic estimation of safety distances between equipment items. A bi-objective optimisation problem is also considered, minimising the layout costs and the total domino hazard index values for the plant, adopting the ϵ -constraint method. The proposed model is then applied to an 11-unit case study susceptible to each of these hazardous events, obtaining results with the optimal layout and protection device configurations in a relatively short amount of time.

中文翻译:

使用多米诺危害指数的安全多层过程工厂布局的 MILP 模型

摘要 在本文中,提出了一种使用多米诺危害指数(综合固有安全指数的子指数)获得安全的多层过程工厂布局设计的基于优化的方法。提出了一种混合整数线性规划(MILP)模型,以获得经济最优的多层布局设计,考虑管道连接、工艺流体的水平和垂直泵送、土地购买、楼层固定和面积相关的建设、财务风险与危险事件及其升级潜力相关,以及安装被动保护装置。危险事件,如池火、喷射火、闪火、火球和爆炸引起的冲击波等,使用一种新颖且更现实的设备项目之间的安全距离估计来考虑。还考虑了双目标优化问题,采用 ϵ 约束方法最小化布局成本和工厂的总多米诺风险指数值。然后将建议的模型应用于易受这些危险事件影响的 11 单元案例研究,在相对较短的时间内获得具有最佳布局和保护设备配置的结果。
更新日期:2021-04-01
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