Seminar:
Corrosion protecting paints and coatings

DNV has extensive global experience in offshore wind and corrosion protection. The recommended practice DNVGL-RP-0416:2016 was the first dedicated guideline for corrosion protection in wind turbines. After a minor update in 2021, the 2025 revision introduces comprehensive updates, including component-specific requirements, evaluation methods, and quality assurance.

Corrosion protection is a long-term challenge, with risks emerging during manufacturing, installation, or after 20+ years of operation. A balanced approach is needed, considering repair options and retrofit strategies. Design decisions should be based on proven coating performance and offshore experience. Lessons from the oil and gas sector should be applied to avoid past mistakes.

DNV presents solutions for these challenges, offering a holistic corrosion protection strategy based on the latest standards and global project experience.

Corrosion protection in industrial applications involves multiple surface treatment techniques to enhance durability and performance of metal components. Cathodic Electro Deposition (CED) provides uniform, high-adhesion coatings using an electrically charged paint bath, ideal for complex geometries. Powder and wet painting methods offer aesthetic finishes and environmental resistance, with powder coating known for its solvent-free application and strong protective layer. Phosphating is a chemical pretreatment process that creates a corrosion-resistant base layer, improving paint adhesion and extending coating life. Together, these methods

This presentation is concerned with a case of how to deal with handed down designs of sensitive offshore wind-power equipment that did not properly consider corrosion protection.

Additionally, there is an evolving aspect to the case, as ongoing lifetime extension and cost-out measures threaten to aggravate difficulties inherent in the original design.

The presentation will walk through the basics of the problem and key aspects of its continued development. Moving on from there a short overview of current and considered corrosion protection strategies will be provided. Finally, the stage is set for an open group discussion of possible measures and solutions to the problems at hand.

This session is planned as a short presentation-style introduction followed by open group discussion of the issues at stake and joint exploration of possible improvements to the situation going forward.

To be announced.

Corrosion protective coatings are essential for ensuring material durability and asset integrity across industries. This presentation will examine the key protection mechanisms, review characterization techniques alongside ISO 12944 test protocols, and discuss their limitations in predicting real-world coating performance. Finally, key unresolved questions driving current research on corrosion protection coatings will be highlighted.

This presentation shares practical experience with the application of a liquid electrolyte-free portable device based on electrochemical impedance spectroscopy (EIS) for in situ assessment of coating impedance and water uptake. The device enables rapid, non-destructive evaluation of barrier properties and early detection of degradation. The presented cases will include laboratory testing of newly formulated coatings, field application on new and aged coatings, and failure analysis of a delaminated coating. Attendees will gain insight into how this method supports coating selection, maintenance, and troubleshooting in real-world environments.

Coatings are intricate, multicomponent systems designed to meet a wide range of often conflicting performance requirements. Key attributes include strong adhesion to substrates or underlying layers, optimal viscosity, long-term durability, and a consistently appealing appearance—all while remaining cost-effective. Functional coatings add further complexity by offering protective features such as corrosion resistance, biofouling prevention, or enhanced fire safety through extended escape times. This presentation showcases the Coatings Science and Technology Center at DTU, dedicated to educating future coating experts and advancing the coatings industry.

The day concludes with a guided tour of the Hempel Foundation Coatings Science and Technology Centre (CoaST) at DTU, offering a unique look into cutting-edge research facilities.