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Combustion products toxicity risk assessment in an offshore installation


Dadashzadeh, M and Khan, FI and Abbassi, R and Hawboldt, K, Combustion products toxicity risk assessment in an offshore installation, Process Safety and Environmental Protection, 92, (6) pp. 616-624. ISSN 0957-5820 (2014) [Refereed Article]

Copyright Statement

Copyright 2013 The Institution of Chemical Engineers

DOI: doi:10.1016/j.psep.2013.07.001


Products of a hydrocarbon fire accident have both chronic and acute health effects. They cause respiratory issues to lung cancer. While fire is the most frequent phenomenon among the offshore accidents, predicting the contaminants' concentration and their behavior are key issues. Safety measures design, such as ventilation and emergency routes based only on predicted contaminants' concentration seems not to be the best approach. In a combustion process, various harmful substances are produced and their concentration cannot be added. The time duration that any individual spends in different locations of an offshore installation also varies significantly. A risk-based approach considers the duration a person is exposed to contaminants at various locations and also evaluates the hazardous impacts. A risk-based approach has also an additivity characteristic which helps to assess overall risk. Through the current study, an approach is proposed to be used for risk assessment of combustion products dispersion phenomenon in a confined or semi-confined facility. Considering CO, NO2 and CH4 as the contaminants of concern, the dispersion of the substances over the layout of the facility after a LNG fire is modeled. Considering different exposure times for three major parts of the facility including the processing area, office area and the accommodation module, the risk contours of CO, NO2 and CH4 over the entire facility are developed. The additivity characteristic of the risk-based approach was used to calculate the overall risk. The proposed approach helps to better design safety measures to minimize the impacts and effective emergency evacuation planning. © 2013 The Institution of Chemical Engineers.

Item Details

Item Type:Refereed Article
Keywords:Acute effects; CFD; Combustion products; Pool Fire; Risk-based approach; Toxic dispersion
Research Division:Engineering
Research Group:Environmental engineering
Research Field:Air pollution modelling and control
Objective Division:Energy
Objective Group:Energy exploration
Objective Field:Oil and gas exploration
UTAS Author:Khan, FI (Professor Faisal Khan)
UTAS Author:Abbassi, R (Dr Rouzbeh Abbassi)
ID Code:94993
Year Published:2014 (online first 2013)
Web of Science® Times Cited:19
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2014-09-22
Last Modified:2017-01-18

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