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51317--9364-New Developments in Coatings for Extended Lifetime for Offshore Wind Structures

Picture for New Developments in Coatings for Extended Lifetime for Offshore Wind Structures
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Requirements for corrosion protection for new large offshore wind farms are extended to 25 years’ maintenance-free service lifetime. Therefore, ISO 12944 is being updated. To bring down construction cost for offshore wind, initiatives have been taken to industrialize the coating application process and use standard components.

Product Number: 51317--9364-SG
ISBN: 9364 2017 CP
Author: Jakob Mølholm
Publication Date: 2017
Industries: Maritime , Energy Generation
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$20.00
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After more than 15 years’ service life of the first large offshore wind farms in the North Sea mostly positive experiences are reported regarding the condition of the protective coating systems. Today however the requirements for corrosion protection for new projects are often extended to at least 25 years’ maintenance-free lifetime. In comparison the highest durability class described in ISO 12944 is more than 15 years until first expected maintenance. Therefore much needed committee work is in progress with the intent to update ISO 12944 with extended durability classes. In order to bring down the construction cost of the support structures for offshore wind initiatives have been taken to industrialize the coating application process and to use standard components wherever possible. Extended pre-qualification tests are needed in order to convince owners and certifiers that new coating systems may actually have 25 years’ maintenance-free lifetime. The chosen coating breakdown factor for the design of cathodic protection is another focus area since less conservatism in the design may reduce the cost for cathodic protection. The paper discusses the need for more documentation on coating systems for extended lifetime and the possibilities of reducing the costs for corrosion protection. Valuable information from decommissioning of old wind farm structures may provide crucial information and documentation.

Key words: Offshore Wind, Marine Corrosion, Protective Coatings, Decommissioning

After more than 15 years’ service life of the first large offshore wind farms in the North Sea mostly positive experiences are reported regarding the condition of the protective coating systems. Today however the requirements for corrosion protection for new projects are often extended to at least 25 years’ maintenance-free lifetime. In comparison the highest durability class described in ISO 12944 is more than 15 years until first expected maintenance. Therefore much needed committee work is in progress with the intent to update ISO 12944 with extended durability classes. In order to bring down the construction cost of the support structures for offshore wind initiatives have been taken to industrialize the coating application process and to use standard components wherever possible. Extended pre-qualification tests are needed in order to convince owners and certifiers that new coating systems may actually have 25 years’ maintenance-free lifetime. The chosen coating breakdown factor for the design of cathodic protection is another focus area since less conservatism in the design may reduce the cost for cathodic protection. The paper discusses the need for more documentation on coating systems for extended lifetime and the possibilities of reducing the costs for corrosion protection. Valuable information from decommissioning of old wind farm structures may provide crucial information and documentation.

Key words: Offshore Wind, Marine Corrosion, Protective Coatings, Decommissioning

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Specifying Corrosion Protection for the Offshore Wind Turbine Industry

Product Number: 51317--9091-SG
ISBN: 9091 2017 CP
Author: Birit Buhr Jensen
Publication Date: 2017
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Specifying corrosion protection for the offshore wind turbine industry in the European CEN TC219(2) committee. This comprises corrosion protection specification for external as well as internal parts of the turbine foundations.
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51315-5896-Corrosion Protection of Offshore Wind Foundations

Product Number: 51315-5896-SG
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51315-5762-Corrosion Protection of Offshore Wind Farms—Protecting Internal Sides of Foundations

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