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- W2380454069 abstract "In order to make reasonable prediction of dynamic economic life in ageing offshore platforms and reduce their operational risk under complicated and uncertain environment,structural process of life extension decision-making model in ageing offshore platforms based on comprehensive fuzzy evaluation was established.Hierarchical structures were set up by analyzing and adjusting four dimensions-engineering factors,structural factors,load factors and risk factors which affect the platform service state.The weight of every factor was computed based on experts' viewpoints and positive reciprocal matrix was established by adopting fuzzy theory.Impacting factors were quantified reasonably by introducing depression factor,crack factor,corrosion factor,as well as the ice load factor,and then the evaluation criteria of life extension decision-making model in ageing offshore platforms in China's Chengbei Oilfield were constituted.The comprehensive score was computed by iterative logical arithmetic.Furthermore,life extension decision-making reference table was established and the reference period of life extension in offshore platform was determined according to this table.Life extension decisions for two platforms were made by using decision-making model and their results were compared with the traditional evaluations.Research results show that this model can describe the dynamic economic life of offshore platforms more accurately and offer a new thought for the research of life extension decisions in ageing offshore platforms under complicated and uncertain environment." @default.
- W2380454069 created "2016-06-24" @default.
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- W2380454069 date "2011-01-01" @default.
- W2380454069 modified "2023-09-26" @default.
- W2380454069 title "Life Extension Decision-making Model for Ageing Offshore Platforms" @default.
- W2380454069 hasPublicationYear "2011" @default.
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