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Splash Zone Coating Performance after Long Term Offshore Exposure

Picture for Splash Zone Coating Performance after Long Term Offshore Exposure
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Following the worlds growing need for sustainable energy solutions, offshore wind farms are important contributions to the generation of renewable energy. One key element for a profitable and sustainable operation of offshore wind farms is that the installations are protected with the most cost-effective corrosion protective solution for the entire lifetime. In practice, this means that today’s projects are planned with an estimated lifetime of a minimum of 25 years without major maintenance of the corrosion protective solution.

Product Number: 51323-19143-SG
Author: Anette Pedersen, Kari Lønvik, Erik Krogstad Sverre, Lars Lichtenstein, Anders W. B. Skilbred, Andreas Løken
Publication Date: 2023
$0.00
$20.00
$20.00

Several operators in the Oil&Gas industry have good experience with the use of glass flake reinforced polyester (GFP) coatings, however, limited information of documented long-term performance can be found in the open literature. During decommissioning of an aged Oil&Gas installation, a visual inspection was carried out at a decommissioning yard and a brace cut out from the splash zone of the jacket structure was examined in laboratory. The examination has included visual inspection, inspection in microscope, adhesion testing and EIS measurements. The durability and service life of GFP coating in offshore splash zone environment have in this work been documented to be good after 25-30 years exposure without any maintenance.


Based on experience from Oil&Gas industry, it may in future update of design codes for offshore wind foundation structures be considered to explicitly define a higher coating design useful life and a lower corrosion allowance in splash zone for GFP coated structures.

Several operators in the Oil&Gas industry have good experience with the use of glass flake reinforced polyester (GFP) coatings, however, limited information of documented long-term performance can be found in the open literature. During decommissioning of an aged Oil&Gas installation, a visual inspection was carried out at a decommissioning yard and a brace cut out from the splash zone of the jacket structure was examined in laboratory. The examination has included visual inspection, inspection in microscope, adhesion testing and EIS measurements. The durability and service life of GFP coating in offshore splash zone environment have in this work been documented to be good after 25-30 years exposure without any maintenance.


Based on experience from Oil&Gas industry, it may in future update of design codes for offshore wind foundation structures be considered to explicitly define a higher coating design useful life and a lower corrosion allowance in splash zone for GFP coated structures.

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Offshore wind farms are important contributions to the growing need for the generation of renewable energy. The number of offshore wind farms is growing, and multiple projects are under planning and construction around the world. One key element for a profitable and sustainable operation of offshore wind farms is that the installations are protected with the most cost-effective corrosion protective solution for the entire lifetime of the offshore wind farm. In practice, this means that today’s projects are planned with an estimated lifetime of a minimum of 35 years without major maintenance of the corrosion protective solution. To achieve this it is instrumental that the entire lifetime cost is considered when a corrosion protective solution is selected.  
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Corrosion and Corrosion Protection of Offshore Wind Energy Towers

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The paper provides a review about the corrosion and corrosion protection of offshore wind energy devices (OWEA) with a focus on the support structure. Firstly, special features resulting from location and operation of wind energy devices offshore are being discussed. This includes the definition of a load collective. Secondly, types of corrosion and corrosion phenomena are summarized in a systematic way. 
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04022 Experiences on Thermal Spray Aluminum (TSA) Coating for Offshore Structures

Product Number: 51300-04022-SG
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Since 1982, there has been a move to Thermal Sprayed Aluminum (TSA) coating in the “splash zone” of offshore structures.  Our experience indicates that an experience applicator, good surface preparation and quality of wire combined to achieve required thickness and apply the sealer to seal the entire surface.

 
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