United Kingdom

United Kingdom

New electron beam welding tech used on wind turbine monopile set for Dogger Bank

An innovative new welding technology claimed to greatly speed up wind turbine monopile production while cutting costs and emissions was used to produce a monopile transition piece destined for the 2.4GW Dogger A and B wind farms in UK waters. 

Consortium partner Sif is also supplying monopile foundations to Dogger Bank C
Consortium partner Sif is also supplying monopile foundations to Dogger Bank C

Cambridge Vacuum Engineering (CVE), the firm behind the technology, said it had welded together a section for a turbine monopile foundation set for Dogger Bank using a new version of electron beam welding for greater efficiency. 

The firm is now applying this technology at the 2400MW Dogger Bank A & B Dogger Bank A & B (2400MW) Offshoreoff Yorkshire, UK, Europe Click to see full details project in the North Sea, partnering with UK developers SSE Renewables, which co-owns the wind farm with Equinor and Eni, plus offshore foundations company Sif Group, and the Welding Institute (TWI). 

Electron beam welding uses a focused beam of electrons targeted with magnets inside a vacuum to weld components together with high precision. 

According to CVE, the tailored version of the technology it uses, named Ebflow, improves outcomes by creating a small vacuum around the seam that is being welded without the need for a large vacuum chamber often associated with the process. 

The company claims it can weld monopiles 25 times faster than typical methods like arc welding while "using 90% less energy, costing 88% less and producing 97% less CO2". 

CVE installed the Ebflow system at Sif’s Maasvlakte 2 facility in Rotterdam, where its performance was inspected by regulatory body DNV, which subsequently issued a technology qualification for the process.  

The monopile is set to be installed at Dogger Bank A&B in late 2023. 

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