Multi-criteria risk assessment approach for components risk ranking - The case study of an offshore wave energy converter

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dc.contributor.authorOkoro, Uzoma
dc.contributor.authorKolios, Athanasios
dc.contributor.authorCui, Lin
dc.date.accessioned2017-02-03T16:15:38Z
dc.date.available2017-02-03T16:15:38Z
dc.date.issued2016-12-02
dc.description.abstractExperts’ judgement is employed in offshore risk assessment because reliable failure data for quantitative risk analysis are scarce. The challenges with this practice lies with knowledge-based uncertainties which renders risk expression and estimation, hence components’ risk-based prioritisation, subjective to the assessor – even for the same case study. In this paper, a new risk assessment framework is developed to improve the fidelity and consistency of prioritisation of components of complex offshore engineering systems based on expert judgement. Unlike other frameworks, such as the Failure Mode and Effect Criticality Analysis, it introduces two additional dimensions: variables and parameters, to allow more effective scoring. These additional dimensions provide the much needed and uniform information that will assist experts with the estimation of probability of occurrence, severity of consequence and safeguards, herein referred to as 3-D methodology. In so doing, it achieves a more systematic approach to risk description and estimation compared to the conventional Risk Priority Number (RPN) of FMECA. Finally, the framework is demonstrated on a real case study of a wave energy converter (WEC) and conclusions of the assessment proved well in comparison and prioritisation.en_UK
dc.identifier.citationOkoro U, Kolios A, Cui L. Multi-criteria risk assessment approach for components risk ranking - The case study of an offshore wave energy converter, International Journal of Marine Energy, Volume 17, April 2017, Pages 21-39en_UK
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/11385
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCondition-based risk assessmenten_UK
dc.subjectRisk estimationen_UK
dc.subjectMulti-criteria risk assessmenten_UK
dc.subjectWave energy converteren_UK
dc.titleMulti-criteria risk assessment approach for components risk ranking - The case study of an offshore wave energy converteren_UK
dc.typeArticleen_UK

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