Offshore Wind Farm Anodes for Foundation & Substation Protection
Sacrificial anode solutions designed for cathodic protection of offshore wind farm foundations, substations and associated submerged marine structures.
OFFSHORE WIND FARM ANODES
Offshore Wind Farm Anodes for Marine Corrosion Protection
Offshore wind farm structures operate in demanding marine environments where steel foundations and submerged components are continuously exposed to seawater. Sacrificial anodes form an important part of the cathodic protection system used to help control corrosion on these structures.
RELI SLEEVE has extensive experience in the design and supply of sacrificial anodes for cathodic protection of offshore wind farm foundations and substations. Anode solutions can be developed according to the structure, cathodic protection requirements, operating environment and approved project specifications.
Offshore wind farm anodes can be integrated into cathodic protection systems for foundation structures and other submerged steel components. Their configuration, dimensions, mounting arrangement and alloy selection can be established according to the engineering requirements of the individual project.
The offshore environment demands careful consideration of seawater exposure, structural geometry, current requirements, coating systems and required protection life. RELI SLEEVE approaches anode supply with these project conditions in mind to support long-term asset integrity.
Key Features of Offshore Wind Farm Anodes
Foundation Protection
Sacrificial anode systems designed for cathodic protection of offshore wind turbine foundation structures.
Substation Protection
Anode solutions for submerged steel components associated with offshore wind farm substations.
Marine Environment
Developed for demanding offshore environments where structures are continuously exposed to seawater.
Project-Specific Design
Anode dimensions, configuration and mounting arrangements can be developed according to project requirements.
Offshore Wind Farm Anodes Technical Specification
| Product Type | Sacrificial Offshore Wind Farm Anode |
|---|---|
| Protection Method | Sacrificial Cathodic Protection |
| Primary Applications | Offshore Wind Foundations & Substations |
| Operating Environment | Offshore Marine / Seawater |
| Anode Material | Aluminium Alloy / Zinc Alloy, as applicable to project design |
| Configuration | Project-Specific |
| Dimensions | As per Approved Engineering Design |
| Mounting Arrangement | As per Foundation / Structure Design |
| Electrical Continuity | As per Approved Cathodic Protection Design |
| Design Life | As per Project Cathodic Protection Design |
| Manufacturing Basis | Applicable Alloy Standard, Customer Specification or Approved Project Drawing |
Available Grades & Standards
The appropriate anode alloy is selected according to the cathodic protection design, seawater environment, current requirements and applicable project specification.
Galvalum III Equivalent
Aluminium alloy anode system available for applicable offshore cathodic protection requirements.
DNV & ISO
Aluminium anodes can be manufactured according to applicable DNV and ISO requirements where specified.
Alanode
Applicable aluminium alloy requirements can be followed according to approved project specifications.
US Mill Specification
Zinc sacrificial anode systems can be manufactured according to applicable specification requirements.
ASTM B148-II
Zinc alloy compositions can be supplied according to applicable ASTM requirements.
Customer Specification
Project-specific alloy, dimensions, configuration and mounting requirements can be considered.
Final alloy grade, anode quantity, current output, dimensions and design life should be established from the approved offshore wind farm cathodic protection design.
Chemical Composition
Aluminium and zinc alloy systems can be supplied for applicable offshore cathodic protection requirements. Final alloy selection is subject to the approved project specification and cathodic protection design.
Aluminium Anodes
Aluminium anodes can be manufactured as per Galvalum III equivalent, DNV, ISO, Alanode standards or customer specifications.
| Element | Galvalum III (Eqv.) | DNV & ISO | Alanode |
|---|---|---|---|
| Zn | 2.0–6.5 | 2.5–5.75 | 0.50–5.00 |
| In | 0.01–0.02 | 0.016–0.04 | 0.005–0.05 |
| Si | 0.08–0.20 | 0.12 Max. | 0.10 Max. |
| Fe | 0.12 Max. | 0.09 Max. | 0.13 Max. |
| Cu | 0.006 Max. | 0.003 Max. | 0.01 Max. |
| Cd | 0.002 Max. | — | — |
| Others (Each) | 0.02 Max. | 0.02 Max. | 0.02 Max. |
| Others (Total) | 0.06 Max. | — | — |
| Al | Remainder | Remainder | Remainder |
Zinc Anodes
Zinc anodes can be manufactured according to applicable US Mill specifications, ASTM standards or customer requirements.
| Element | US Mill Spec | ASTM B148-II |
|---|---|---|
| Al | 0.10–0.50 | 0.005 Max. |
| Si | 0.125 Max. | — |
| Cd | 0.025–0.15 | 0.03 Max. |
| Fe | 0.005 Max. | 0.0014 Max. |
| Pb | 0.006 Max. | 0.003 Max. |
| Cu | 0.005 Max. | 0.002 Max. |
| Zn | Remainder | Remainder |
Aluminium Anode Electrochemical Characteristics
The following aluminium anode electrochemical characteristics are based on the supplied performance data for seawater operation at 23°C.
| Operating Environment | Seawater at 23°C |
|---|---|
| Reference Electrode | Ag / AgCl |
| Open Circuit Potential | More negative than −1.10 V |
| Closed Circuit Potential | More negative than −1.05 V w.r.t. Ag / AgCl reference electrode |
| Anode Capacity | 2,550–2,750 A·hr/kg |
Actual anode performance depends on the selected alloy, seawater conditions, structure geometry, current demand, coating condition and approved cathodic protection design.
Offshore Wind Farm Anode Applications
Wind Turbine Foundations
Sacrificial anodes for cathodic protection of submerged offshore wind turbine foundation structures.
Offshore Substations
Anode systems for submerged steel components associated with offshore electrical substations.
Offshore Wind Structures
Cathodic protection solutions for steel structures exposed to the offshore marine environment.
Foundation Components
Project-specific anode configurations for applicable submerged foundation components.
Marine Infrastructure
Sacrificial anode systems for associated marine steel infrastructure where cathodic protection is required.
Offshore Renewable Energy
Anode solutions developed for the corrosion protection requirements of offshore renewable energy assets.
Offshore Wind Farm Project Experience
Moray Offshore Windfarm East
Scotland
Offshore wind farm project associated with sacrificial anode solutions for cathodic protection requirements.
Seagreen Offshore Wind Farm
Scotland
Offshore wind farm project experience supporting cathodic protection requirements for demanding marine structures.
Offshore Engineering
Design & Supply
RELI SLEEVE has experience in the design and supply of sacrificial anodes for offshore wind farm foundations and substations.
Marine Corrosion Protection
Project Specific
Anode solutions can be developed around structural geometry, operating conditions and approved CP requirements.
Advantages of Offshore Wind Farm Anodes
About RELI SLEEVE
Reliable Group Experience Since 1975
RELI SLEEVE is part of the Reliable Group, which has served the Oil & Gas, Petrochemical, Power, Water, Infrastructure and Process Industries for more than five decades. Beginning as a trading business supplying steel pipes, plates and industrial raw materials, the Group evolved into an international organization involved in trading, importing, manufacturing, exporting and engineering solutions.
The Group's flagship Reliable Pipes & Tubes Ltd. supplies stainless steel, carbon steel, alloy steel and special steel products including pipes, tubes, fittings, flanges, plates, coils, bars and industrial components. RELI SLEEVE was established as a specialized division for corrosion protection and internal coating solutions, serving Oil & Gas companies, EPC contractors and pipeline operators.
Building on this foundation, RELI SLEEVE has expanded into advanced anode products and cathodic protection systems. This development strengthens the Group's ability to provide broader pipeline integrity and asset protection solutions for customers in India and international markets.
Offshore Wind Farm Anodes FAQ
Offshore Wind Farm Anodes are sacrificial anodes used as part of cathodic protection systems for offshore wind turbine foundations, substations and applicable submerged marine structures.
They are primarily used on submerged offshore wind turbine foundations, substations and other steel structures exposed to marine environments.
Aluminium and zinc sacrificial anode systems can be considered depending on the approved cathodic protection design, operating environment and project specification.
Yes. Anode dimensions, quantity, configuration and mounting arrangements can be established according to the approved engineering and cathodic protection requirements of the project.
RELI SLEEVE has experience in the design and supply of sacrificial anodes for offshore wind farm foundations and substations, including the Moray Offshore Windfarm East and Seagreen Offshore Wind Farm projects in Scotland.
Selection depends on the structure, seawater conditions, coating system, current requirements, required design life, alloy characteristics and the approved cathodic protection calculation.
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