ICCP technology and wind turbine protection
CORROSION’s highly sophisticated Impressed Current Cathodic Protection
(ICCP) offshore wind system is the most cost-effective, easy-to-maintain and environmentally friendly solution on the market for the protection of offshore wind turbine foundations against corrosion.
Better performance at better value
While Galvanic Anode Cathodic Protection (GACP) systems operate on the natural driving force between two metals, our ICCP system uses a continuous external power source. CAPEX/OPEX calculations demonstrate that the ICCP-systems offer a far more economical solution for offshore wind turbine corrosion protection in the long term.
With this innovation, we respond to the developments in the market, the increasingly challenging weather conditions, and the need to protect increasingly larger foundations, also known as the XX(X)L monopiles, in an environmentally friendly way.
The newly designed sustainable Impressed Current Cathodic Protection (ICCP) anode is already proving very effective on offshore turbine foundations worldwide. CORROSION’s new ‘slim fit’ anode design delivers the same quality and reliability as the current ICCP system, but is more efficient, versatile, and future proof.
The launch of our new ICCP anode design represents a huge step forward in efficiency. The anode head is more powerful and can therefore ‘impress’ more current. This makes it possible to protect the largest monopiles and reduce the amount of coating on monopiles to no coating at all.
In addition, this design offers a unique and new installation option. Besides to mounting on a TP and boat landing ladder, this anode can also be installed on the foundation itself. Which leads to big savings in time and money.
Durability and longevity
What’s more, traditional technologies require large quantities of heavy sacrificial anodes to meet the offshore foundation design life of over 25 years. In contrast, CORROSION’s ICCP system requires only a limited number of ICCP anodes and sensors to work effectively for well over 25 years, which is in excess of the initial design life of the wind turbines. As a result, the same system can continue to be used even in the event of the offshore wind farm lifetime being extended.
A further advantage of our ICCP wind systems is that they are equipped with a standard feature to take data readings and make adjustments at the touch of a button from an offshore wind farm control center rather than having to do so on location – something particularly important given the hard-to-reach locations of many offshore wind farms. System performance is monitored, and a warning is triggered if any of the values are too high or too low.
For GACP systems, regular offshore campaigns are necessary to execute a performance and protection level check. These are both costly and time consuming.
Offshore Wind Projects
Protecting over 2.300 foundations, and counting
|Baltic II Substation||1||Jacket|
|Borkum West II||1||Jacket|
|Borkum west II – Phase II||32||Monopile|
|Borssele III & IV||77||Monopile|
|Changle A Substation||1||Jacket|
|DanTysk OAP Substation||1||Jacket|
|Global Tech Substation||1||Jacket|
|Horns Rev III||49||Monopile|
|Les Eoliennes Flottantes du Golf du Lion||4||Monopile|
|Northwester II Substation||1||Monopile|
|Xinghua Bay Substation||1||Monopile|
Offshore Wind Projects
Protecting over 2.300 foundations, and counting
|Baltic II Substation||1||Jacket||External||29-10-2015|
|Belwind II||50||Monopile||External and Internal||09-12-2010|
|Borkum West II||1||Jacket||External||03-07-2020|
|Borkum west II – Phase II||32||Monopile||External and Internal||03-07-2020|
|Borssele III & IV||77||Monopile||External and Internal||06-01-2021|
|Borssele V||2||Monopile||External and Internal||25-02-2021|
|Changle A||26||Jacket||External and Internal||01-10-2021|
|Changle A Substation||1||Jacket||External||01-10-2021|
|DanTysk OAP Substation||1||Jacket||External||30-04-2015|
|Deutsche Bucht||31||Monopile||External and Internal||30-09-2019|
|Global Tech Substation||1||Jacket||External||02-09-2015|
|Hollandse kust zuid||140||Monopile||External||01-06-2023|
|Horns Rev III||49||Monopile||External and Internal||22-08-2019|
|Kaskasi Substation||1||Monopile||External and Internal||01-10-2022|
|Kaskasi II||38||Monopile||External and Internal||01-10-2022|
|Les Eoliennes Flottantes du Golf du Lion||4||Monopile||External||01-09-2023|
|Merkur||66||Monopile||External and Internal||24-06-2019|
|Seamade (Seastar)||30||Monopile||External and Internal||15-12-2020|
|Seamade (Mermaid)||28||Monopile||External and Internal||15-12-2020|
|Northwester II||23||Monopile||External and Internal||14-05-2020|
|Northwester II Substation||1||Monopile||External||14-05-2020|
|Noshiro Port||20||Monopile||External and Internal||31-12-2022|
|Riffgat||30||Monopile||External and Internal||07-03-2014|
|Saint Nazaire||80||Monopile||External and Internal||31-12-2022|
|Sandbank||72||Monopile||External and Internal||25-01-2017|
|Triton Knoll||90||Monopile||External and Internal||01-01-2022|
|Xinghua Bay Substation||1||Monopile||External||01-01-2017|
|Yunlin||80||Monopile||External and Internal||31-03-2022|
GACP systems have a very significant carbon footprint long before they are even installed on wind turbine foundations. The production process of aluminum – from extracting bauxite to producing a suitable aluminum alloy, in addition to that of heavy metal alloying elements such as Zinc – requires the transportation of metals over long distances, sometimes from one side of the world to another. Moreover, every additional sacrificial anode leads to the further depletion of resources such as aluminum and all the alloying elements.
Post-installation, GACP systems release tons of potentially harmful metals into the world’s seas and oceans. A 1,000-megawatt windfarm with 100 monopiles requires an average of 1000 tons of aluminum anodes, in addition to heavy metal zinc alloying element of approximately 50 tons – all of which will dissolve in the seawater and affect the marine life.
In comparison, for the very same 1,000-megawatt windfarm, CORROSION’s ICCP system anodes only require a 750-gram coating of Metal Mixed Oxide (MMO). These oxides are made of precious metals such as Iridium, Platinum, Ruthenium and not of heavy metals.
This means around 60,000 times less zinc and 1.5 million times less aluminum is emitted into marine environment than our ICCP system than with traditional sacrificial anodes. More information can be found in our whitepaper ‘ICCP vs GACP’.
Preventative maintenance should in general be carried out on offshore wind turbines two or three times a year. The frequency of maintenance of offshore wind turbine foundations depends on whether the turbines are protected using an Impressed Current Cathodic Protection or a (ICCP) system or a Galvanic Anode Cathodic Protection (GACP) system, with the latter requiring more frequent checks.
The average design life of wind turbines is approximately 25 years, depending on environmental conditions such as wind speed. Turbine foundations are designed to last longer, taking into account the time of installation and disassembly