Aberthaw Power Station Sea Defence and Groyne Repair Project

Aberthaw Power Station Sea Defence and Groyne Repair Project

The sea defences at Aberthaw Power Station site were constructed during the mid-1950’s.  They comprise a perimeter sea wall, a series of groynes, and a revetment along the banks of the River Thaw.   The sea wall surrounds the south and west sides of the site and comprises a site cast concrete gravity retaining wall. The front of the wall has a concave face to deflect waves and stands approximately…

Tidal Flap Valve Installation

Tidal Flap Valve Installation

Installation of eel friendly tidal flap valve to existing concrete head wall for flood prevention.

Llandanwg Culvert Repairs

Llandanwg Culvert Repairs

Structural surveys identified that Llandanwg Culvert was structurally unsafe and required repair. To make the structure safe, a confined space team was required to rake out and reseal fractures to the barrel and wing walls.

Cartlett Brook Rail Embankment Scour Repair and Protection

Cartlett Brook Rail Embankment Scour Repair and Protection

Following investigation, it was identified that there was approximately 5.5m in length scour occurring to the earth embankment adjacent to the culvert; the culvert headwall and wing walls were also in relatively poor condition.

Llyn Teifi Reservoir Spillway Rehabilitation

Llyn Teifi Reservoir Spillway Rehabilitation

The Teifi dam spillway is under the Reservoirs Act 1975, this Act requires reservoirs to be under supervision at all times and periodically inspected by specialist qualified civil engineers. As a result of one of these inspections concerns were highlighted about the stability and deterioration of the concrete due to freeze/thaw action over many years. Therefore the need for refurbishment work was identified.