Topographic Survey for new cable with 44km surveyed in Ireland and 31km surveyed in the UK.

Project Scope

The East–West Interconnector is a high-voltage direct current submarine and subsoil power cable which connects the British and Irish electricity markets.

The Eirgrid East–West Interconnector has a total length of 261 kilometres (162 mi), of which 186 kilometres (116 mi) is submarine cable and 75 kilometres (47 mi) is subsoil cable.

Apex Surveys were commissioned to undertake a topographic survey and produce a long section along the route of the proposed subsoil cable.

Our Solution

Survey consisted of a topographic route survey for Woodlands, Co Meath to Rush, Co Dublin (44Km) and from Prestatyn to Chester Road in the UK (31Km). Long section was produced along the route.

Starting in woodland, Co Meath the route was surveyed using a GNSS mobile mapping solution. Tolerances were set to 30mm to ensure quality of data with known base station checked along the route for quality control.

Survey data was processed using Trimble Geo Office with final ING coordinates generated for Grid Inquest. Long section was generated in Atlas SCC with final edits completed in AutoCAD.

Survey Outputs

  • Long Section generated along length of route.
  • Digital drawings delivered in MICROSTATION, AutoCAD, ASCII, MOSS and PDF formats.
  • Digital Report delivered in hard copy and PDF format.