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51312-01305-Corrosion in Deepwater

Picture for Corrosion in Deepwater
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Product Number: 51312-01305-SG
ISBN: 01305 2012 CP
Author: Paulinus Emeka Ogu
Publication Date: 2012
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ABSTRACT Parameters their corrosion forms and mechanisms important in defining the deepwater environment in relation to the reliability of offshore and subsea facilities have been studied. The aim of this research is to provide baseline information for predicting deepwater corrosion behaviour and its design-oriented solutions. Experimental results of two major case studies_ a pioneering deep ocean studies performed by shallow and deep waters exposures and computational modelling of seawater resistivity changes on impressed current cathodic protection system_ were analytically reviewed. Whereas analysis of the former case study identified different material’s responses indicating five forms of corrosion which initiated electrochemically and propagated in a localized manner by general corrosion embrittlement or dissolution mechanisms the latter confirmed marked water resistivity influences on the cathodic protection system. Various prominent parameters associated with the observed forms and mechanisms of the corrosion process or which are significant in determining the durability of subsea structures in the ocean as a function of the efficiency of protective coating and cathodic protection were identified.
ABSTRACT Parameters their corrosion forms and mechanisms important in defining the deepwater environment in relation to the reliability of offshore and subsea facilities have been studied. The aim of this research is to provide baseline information for predicting deepwater corrosion behaviour and its design-oriented solutions. Experimental results of two major case studies_ a pioneering deep ocean studies performed by shallow and deep waters exposures and computational modelling of seawater resistivity changes on impressed current cathodic protection system_ were analytically reviewed. Whereas analysis of the former case study identified different material’s responses indicating five forms of corrosion which initiated electrochemically and propagated in a localized manner by general corrosion embrittlement or dissolution mechanisms the latter confirmed marked water resistivity influences on the cathodic protection system. Various prominent parameters associated with the observed forms and mechanisms of the corrosion process or which are significant in determining the durability of subsea structures in the ocean as a function of the efficiency of protective coating and cathodic protection were identified.
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