Railway & PWay surveys:
Severn Partnership are PWay survey specialists and have been developing rail focussed management systems, site access planning and survey delivery workflows since 1994. We have survey hundreds of stations and bridge structures, thousands on miles of track and overhead lines over the country from Aardgay in Scotland to Cornwall in the South West. Working for engineering contractors, train operating companies (TOCs) and asset owners like Network Rail, Transport for London (overground & underground), Irish Rail and Docklands Light Rail (DLR).
Efficiency is more important now than ever before as access to the rail infrastructure is increasingly limited. To combat this, we have used the principles of lean to cut waste and minimise track access time, benefiting both safety and project delivery. Investment in railway specific equipment such as the Amberg IMS5000 system for rapid clearance analysis gives us the edge with efficient working methodologies.
Expertise: All our directors and project managers have first hand experience of working on the rail infrastructure, so getting us involved early in any project will allow them to pass on the benefits of their knowledge. Getting the right advice at specification stage could save weeks or months of costly track access time compared to using conventional survey methods and workflows.
While Severn Partnership employs the most up to date electronic instruments and relevant specialist equipment, we are also experienced in using traditional railway surveying techniques and have the sense to know when the traditional approach is still the best method to use.
Projects have covered a full spectrum of survey deliverables from S&C and plain line to embankments, OHLE, structures and deformation monitoring.
- Irish Rail – 165miles of High accuracy control survey, photogrammetry and structure surveys (Dublin to Cork)
- HS1 (Rail Link Engineering) in London, linking to Kings Cross and St Pancras
- HS2 from Euston
- Paddington approaches monitoring
- Parsons Brinckerhoff – 205 bridge structures, tunnels and signals, topographical survey and ClearRoute sections
- Network Rail secondment as Survey advisor on the A09 speed enhancement project
Going Mobile: In 2014, we invested in the first survey grade mobile mapping system in the UK (Leica Pegasus:two) which allowed us to revolutionise track survey times. Using the system to survey tens of miles per night instead of half a mile for a team. This workflow was then expanded to enable scanning above and below bridge structures by transferring the scanner to be both vehicle and boat mounted.
We followed this by gaining Network Rail product approval for the use of the Amberg IMS5000 for scanning platforms. and can offer a range of mobile solutions depending upon the required survey deliverables from 2D alignments to 3D CAD, BIM or clearance profile analysis (SCO files).
The benefits of both systems – very high speed, high accuracy, volume of data and valuable time on track reduced.