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Scotland railways modelled with 3D scanner

Scots tunnel

Network Rail Scotland has modelled its infrastructure with a track-based scanner for the first time as it gears up for the arrival of new rolling stock.

Absolute track geometry engineers have been collecting high-resolution data about track and surrounding features such as bridges, platforms and parapets with the Trimble GEDOScan system.

The information is used to create three-dimensional images for use in track clearance assessments on structures and tunnels.

Network Rail Scotland has undertaken the surveys as it prepares for the introduction of new train classes, such as the LNER Azuma and class 158s.

The system is used to check trains fit on existing lines, carry out maintenance and monitoring and reduce the time rail engineers need to spend on the track.

Graham Hutchison, absolute track geometry engineer with Network Rail in Scotland said: “This system is ideally suited to tunnel surveys where irregular construction can make it difficult to locate the main pinch points. The three-dimensional scan measures the full extent of a tunnel precisely in about a fifth of the time than it took previously.”

Surveys have also been carried out to assess the network for future freight capacity growth such as at Mossgiel tunnel near Kilmarnock, Drumlanrig, Blochairn and Duke St tunnels as the railway prepares for larger and longer freight trains on the network.

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