Jotun Releases Offshore Wind Coating Report
Marine and protective coatings company Jotun recently announced that one of its glass flake polyester (GFP) coatings has provided more than 30 years of maintenance-free corrosion protection at the splash zone of an offshore asset. The findings come from a new independent report completed by classification society DNV.
According to Jotun, its GFP coatings solution Baltoflake has provided decades of protection on an offshore wind substructure and has reduced lifecycle costs by up to 50%.
For the study, Baltoflake was applied to an offshore oil platform in the North Sea in the late 1980s. DNV inspected a section of jacket from the platform, which was installed in 1972 and decommissioned in 2020.
Despite over three decades of exposure to the North Sea’s harsh environment, Jotun reports that the analysis revealed that the coating at the splash zone was intact, still smooth and showing no signs of delamination.
“Although glass flake coatings have been used in the energy industry for over 40 years, there has traditionally been very little research into the material’s long-term benefits. However, by partnering with DNV on this report, we now have the relevant in-field data required to demonstrate Baltoflake’s full asset lifecycle protection performance,” said Ismail Tan, Global Category Manager - New Construction Primers.
“Baltoflake removes the requirement for offshore wind developers to undertake expensive repairs or replacement due to corrosion. By reducing overall maintenance costs and downtime, we can empower operators to focus their efforts on clean energy generation.”
Recent figures reportedly show that global offshore wind capacity is expected to reach 630 gigawatts by 2050, up from 40 gigawatts in 2020. However, the company notes that the cost of steel is skyrocketing due to global steel stocks, production declining due to the COVID-19 pandemic and the conflict in Ukraine locking out about 10% of the global steel trade.
This is reportedly putting pressure on offshore wind projects. These rising prices can impact large turbine sizes, longer foundations structures and substation requirements.
Because of this, Jotun reports that solutions like Baltoflake have the potential to extend the life of new and existing turbines, which are designed to last for 20 to 25 years, by more than 10 years. It can also reduce life cycle costs by 50% in the process.
Baltoflake, which was introduced in the 1970s, was reportedly one of the first performance coating products targeted for offshore environment deployment. The coating has glass flake materials incorporated into polyester to create structure that is 5-20 times more impermeable than resin.
GFP coatings can provide corrosion resistance to a range of acids, alkalis, solvents and salt solutions, in addition to displaying thermal stability. Baltoflake can be applied to substrates such as carbon steel, stainless steel, concrete and coated surfaces, and the coating is also pre-qualified in several NORSOK coatings systems.
The report was launched at this year’s ONS exhibition in Stavanger, Norway, that closed at the beginning of this month.