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Modelling an integrated impact of fire, explosion and combustion products during transitional events caused by an accidental release of LNG

Citation

Baalisampang, T and Abbassi, R and Garaniya, V and Khan, F and Dadashzadeh, M, Modelling an integrated impact of fire, explosion and combustion products during transitional events caused by an accidental release of LNG, Process Safety and Environmental Protection, 128 pp. 259-272. ISSN 0957-5820 (2019) [Refereed Article]

Copyright Statement

2019 Published by Elsevier B.V. on behalf of Institution of Chemical Engineers.

DOI: doi:10.1016/j.psep.2019.06.005

Abstract

In a complex processing facility, there is likelihood of occurrence of cascading scenarios, i.e. hydrocarbon release, fire, explosion and dispersion of combustion products. The consequence of such scenarios, when combined, can be more severe than their individual impact. Hence, actual impact can be only represented by integration of above mentioned events. A novel methodology is proposed to model an evolving accident scenario during an incidental release of LNG in a complex processing facility. The methodology is applied to a case study considering transitional scenarios namely spill, pool formation and evaporation of LNG, dispersion of natural gas, and the consequent fire, explosion and dispersion of combustion products using Computational Fluid Dynamics (CFD). Probit functions are employed to analyze individual impacts and a ranking method is used to combine various impacts to identify risk during the transitional events. The results confirmed that in a large and complex facility, an LNG fire can transit to a vapor cloud explosion ifthe necessary conditions are met, i.e.the flammable range, ignition source with enough energy and congestion/confinement level. Therefore, the integrated consequences are more severe than those associated with the individual ones, and need to be properly assessed. This study would provide an insight for an effective analysis of potential consequences of an LNG spill in any LNG processing facility and it can be useful for the safety measured design of process facilities.

Item Details

Item Type:Refereed Article
Keywords:LNG spill, accident transition, i7ntegrated consequence, CFD
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ocean Engineering
Objective Division:Energy
Objective Group:Mining and Extraction of Energy Resources
Objective Field:Oil and Gas Extraction
UTAS Author:Baalisampang, T (Mr Til Baalisampang)
UTAS Author:Garaniya, V (Dr Vikram Garaniya)
ID Code:133197
Year Published:2019
Web of Science® Times Cited:8
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2019-06-18
Last Modified:2019-12-16
Downloads:0

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