“Lincs On-Shore” – New Substation, Norfolk

For: Siemens

Client/ End User: Siemens for Centrica

Services Provided: Civil Engineering and Building Construction

Scope:  The Lincs on-shore substation is the new substation which processes the electricity generated by the off-shore wind farm. The power is then fed into the National Grids existing Walpole Substation. Alpha were contracted to construct civils element of works to the clients design. Our works included the construction of numerous piled foundations, super grid transformer bunds, a control building which includes a steel structure with composite cladded walls and roof complete with internal block work partitions and full M&E installation. The access roads, containment, drainage including an underground emergency oil spillage dump tank with a capacity of 270,000L, a class 1 full retention separator, pumping station, a new outfall to the existing dyke and final site landscaping.

Unusual Aspects:  A high water table and sandy ground conditions resulted in the installation of specialist dewatering techniques to enable the large deep excavations.