Khodadadi-Mousiri Ahmad, Yaghoot-Nezhada Ali, Sadeghi-Yarandi Mohsen, Soltanzadeh Ahmad
Department of Chemical Engineering, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran.
Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Heliyon. 2023 Mar 21;9(4):e14628. doi: 10.1016/j.heliyon.2023.e14628. eCollection 2023 Apr.
The present study aimed to consequence modeling and root cause analysis of the real explosion of a methane pressure vessel in separation unit of a gas refinery in Iran.
ology: This study was performed in a gas refinery in the south of Iran. The studied scenario was the actual scenario that occurred in the studied pressure vessel. Modeling of possible consequences was performed using PHAST 7.2 software. Also, the root causes analysis of the accident was performed using experts' brainstorming.
At radii of 15 and 45 m, the radiation level reaches 12.5 and 4 kW/m, respectively. In the late explosion worst-case, the vapor cloud explodes after reaching a distance of 20 m from the pressure vessel. At radii of 20 m, 25 m, and 150 m from the center of the explosion, the pressure reaches 0.2068, 0.1379, and 0.02068 bar, respectively. In the Early Explosion Overpressure, the acceptable pressure is obtained at a distance of 193 m. Moreover, in the Early Explosion Overpressure radiation, at radii of 28 m, 38 m, and 193 m, the pressure reaches 0.2068, 0.1379, and 0.02068 bar, respectively.
The findings revealed that creating an appropriate risk management algorithm with a focus on consequence modeling can be an effective step towards reducing losses in the process industry. This results can create a novel insight in comparing the two reactive and proactive approaches and also reveal the effectiveness of consequence modeling in reducing the severity of risks.
本研究旨在对伊朗一家天然气炼油厂分离单元中甲烷压力容器实际爆炸进行后果建模和根本原因分析。
本研究在伊朗南部的一家天然气炼油厂进行。所研究的场景是在所研究的压力容器中实际发生的场景。使用PHAST 7.2软件对可能的后果进行建模。此外，通过专家头脑风暴对事故的根本原因进行分析。
在半径15米和45米处，辐射水平分别达到12.5千瓦/平方米和4千瓦/平方米。在爆炸后期最坏情况下，蒸汽云在距压力容器20米处爆炸。在距爆炸中心20米、25米和150米处，压力分别达到0.2068巴、0.1379巴和0.02068巴。在早期爆炸超压情况下，在193米处获得可接受压力。此外，在早期爆炸超压辐射中，在半径28米、38米和193米处，压力分别达到0.2068巴、0.1379巴和0.02068巴。
研究结果表明，创建一个以后果建模为重点的适当风险管理算法可以是朝着减少流程工业损失迈出的有效一步。这些结果可以在比较两种反应式和主动式方法方面产生新的见解，并且还揭示后果建模在降低风险严重性方面的有效性。
