Trenchless HDD Projects

We are committed to leading the way in utilities and energy transition contracting; our mission is to innovate and deliver sustainability. OCU’s passion for addressing complex challenges brings new standards of growth in our people and capabilities.

Power Transmission & Distribution

Energy Transformation

Trenchless HDD

Water & Environmental

Digital Infrastructure

Civil Engineering

Sustainability

Filter Case Studies By:

Kintore Substation - HDD Installation

OCU delivered a design-and-build HDD solution at Kintore Substation to install new cable ducts for twin 132kV circuits beneath the B977, replacing existing oil-filled cables.

School Hill & Addison Road HDD UTX

OCU delivered complex utility diversion and under-track crossing (UTX) works at School Hill and Addison Road as part of HS2’s Enabling Works Contract in Calvert, Buckinghamshire.

Corran Narrows

OCU delivered a critical 33kV underground cable installation beneath Loch Linnhe to replace ageing seabed cables that had repeatedly faulted due to harsh tidal and geological conditions.

Axford Pipeline Thames Water

OCU was appointed to deliver the Axford Pipeline scheme for Thames Water. The project involved constructing a 17.6km clean water pipeline, building a new booster station at Dorcan.

Orkney-Caithness HVAC 220kV Landfall

OCU Group delivered two 1,200m parallel landfall crossings as part of SSEN’s 220MW high-voltage transmission project linking Finstown in Orkney to Dounreay in Caithness.

Cork Harbour Horizontal Directional Drilling

OCU was contracted to design and install twin 1,025 metre lengths of 500mm Diameter SDR-9 PE100 Foul Main under Cork Harbour using Horizontal Directional Drilling (HDD).

Dee-crossing Connah's Key

OCU was awarded the Dee Crossing contract, located in Connah’s Quay. Our teams designed and installed two 860m-long barrier pipelines under the River Dee using Horizontal Directional Drilling (HDD).