Ørsted contracted Murphy to install the onshore cables along the allocated 11.5km cable route, from the landfall area to Race Bank onshore substation. The project is part of an overall programme, which will transform incoming energy from the offshore wind turbines and then export it to onshore converter stations.
The Race Bank offshore wind project consists of two 220kV export cable systems. They are the length of approximately 70km at the offshore section and approximately 11km at the onshore section.
The route runs cross country with 58 crossings of watercourses and roads and 11 open-cut watercourse crossings. Due to the route, there were a number of ecological and environmental constraints, including the presence of water voles and nesting birds. Areas of high water table also meant that specialist dewatering techniques were required, so that the works could continue.
Thermal resistivity testing was carried out along the entire route, which proved that the existing ground was suitable to use for the duct surroundings. A processing bucket was brought in to ensure there were no sharp objects or stones around the ducts, which cut down traffic on the project considerably.
Murphy provide the UK and Ireland with solutions across many areas of power, including overhead and underground cross-country cabling, substations, rail infrastructures and renewable energy infrastructures. Our power team is known for its extensive in-house expertise and continual drive to innovate within the industry.