Cable Engineering

We were involved in developing both the cable route, outline and detailed design for construction for the 400 kV HVAC circuit. Supporting the development of the detailed design by completing and witnessing the required ground and site investigations. Following these investigations site specific cable and utility crossings were developed to ensure the design could operate unhindered. The design also had to incorporate the local environmental considerations. Finally, we completed the as built design pack and rating schedules for the route records.

We were involved in multiple 132 kV schemes throughout Scotland assisting with feasibility studies for undergrounding sections of overhead line (OHL) to offer significant reductions in visual impact, while avoiding unwanted economic and environmental impacts. When feasibility had been assessed we developed both the routes and outline cable system design to provide a preferred design solution.

This project comprised route design for the onshore southern cables which comprised circa 33 km of 600 kV DC cable and 4 km of 400 kV AC cable. We undertook the technical route development for both of these routes and the cable system design for the 400 kV AC route. Additionally, we carried out PM duties, tender evaluation, design assurance, and acting as cable technical lead throughout the Compulsory Purchase Order (CPO) process.