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Optimization of the corrosion protection for offshore windfarm monopile foundation - Engineering design lessons learnt
Saipem sa, France.
Saipem sa, France.
Saipem sa, France.
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
2019 (English)In: NACE - International Corrosion Conference SeriesVolume 2019-March, 2019, Article number 13378Corrosion Conference and Expo 2019; Nashville; United States; 24 March 2019 through 28 March 2019;, National Assoc. of Corrosion Engineers International , 2019Conference paper, Published paper (Refereed)
Abstract [en]

Protection barriers are implemented to provide corrosion protection for offshore windfarm monopile foundations. Such protection methods have been applied since the beginning of the offshore windfarm industry with regard to the external surfaces and more recently, since 2010's for the internal surfaces. Design life extension combined with an increase of foundations dimensions lead currently to the requirement for high efficiency / high capability protection barriers. Main findings and engineering lessons learned on how to optimize the above protection barriers design are reviewed in this paper, specially: i. Appropriate interpretation of the new revision (2017-2018) of ISO(1) 129441-5 to define the right environment corrosivity category and subsequent painting systems durability. ii. Relevance of design current densities and drained current into sediments for cathodic protection system from codes & standards. iii. Use of cathodic protection modelling to optimize cathodic protection system design; Findings on mitigation of galvanic anodes interferences are presented to illustrate the purpose. iv. Design of a passive water/air renewal system to prevent side effects resulting from cathodic protection system installed in a nearly closed environment like monopile foundation internal areas. v. Environmental impact of galvanic anodes: ''Myth or reality''?.

Place, publisher, year, edition, pages
National Assoc. of Corrosion Engineers International , 2019.
Keywords [en]
Cathodic protection, Engineering, Galvanic anodes, Modelling, Monopile foundation, Offshore windfarm, Painting system, Anodes, Environmental impact, Foundations, Models, Offshore oil well production, Cathodic protection systems, Closed environment, Corrosivity category, Foundation engineering, Monopile, Wind farm
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-39994Scopus ID: 2-s2.0-85070076498OAI: oai:DiVA.org:ri-39994DiVA, id: diva2:1361654
Conference
NACE - International Corrosion Conference Series Volume 2019-March, 2019, Article number 13378 Corrosion Conference and Expo 2019; Nashville; United States; 24 March 2019 through 28 March 2019;
Available from: 2019-10-16 Created: 2019-10-16 Last updated: 2019-10-16Bibliographically approved

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