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A robust risk assessment methodology for safety analysis of marine structures under storm conditions


Abaei, MM and Arzaghi, E and Abbassi, R and Garaniya, V and Chai, S and Khan, F, A robust risk assessment methodology for safety analysis of marine structures under storm conditions, Ocean Engineering, 156 pp. 167-178. ISSN 0029-8018 (2018) [Refereed Article]

Copyright Statement

Copyright 2018 Elsevier Ltd.

DOI: doi:10.1016/j.oceaneng.2018.02.016


Accidents involving vessels and/or offshore structures (henceforth referred to as marine structures) may pose high financial, environmental and fatality risk. To effectively manage these risks a methodical approach is required to model accident load and the stochastic behaviour of the marine structure that are arising from storm effects. This paper introduces a proactive framework that identifies and considers all the initial relevant risks. Compared to the conventional approaches that rely on precursor data for accident modelling, the developed methodology utilizes the critical stochastic variables directly from the hydrodynamic analysis of the floating structure. For this purpose, a novel numerical model is proposed to replicate a storm based on Endurance Wave Analysis (EWA) method. This approach reduces the computational cost (time and load) of the simulations. The critical stochastic variables are subsequently used in Bayesian Network (BN) to develop the risk model. The EWA and BN based integrated methodology assists in better understanding of accident causation and associated risk in changing operational conditions. The application of the methodology is demonstrated through a Floating Storage Unit (FSU) experiencing capsizing scenario.

Item Details

Item Type:Refereed Article
Keywords:risk assessment, safety analysis, marine structures, harsh conditions
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:Transport
Objective Group:Water transport
Objective Field:Water transport not elsewhere classified
UTAS Author:Abaei, MM (Mr Mohammad Abaei)
UTAS Author:Arzaghi, E (Dr Ehsan Arzaghi)
UTAS Author:Abbassi, R (Dr Rouzbeh Abbassi)
UTAS Author:Garaniya, V (Associate Professor Vikram Garaniya)
UTAS Author:Chai, S (Professor Shuhong Chai)
UTAS Author:Khan, F (Professor Faisal Khan)
ID Code:125394
Year Published:2018
Web of Science® Times Cited:24
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2018-04-16
Last Modified:2018-11-23

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