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| Maryland Station Arcing from the overhead lines was detected when trains passed through certain sections of Maryland station . A survey was required of each wire run and bridges/structures to identify the cause of the arcing and to provide plans that would allow for design to rectify the problem. Each wire run is quite complex, and with many wire runs all converging it was felt that 3D scans could manage the complex nature of the runs far easier than conventional non-contact surveying. The scanners allowed capture of all data without the need for access to the track or OLE, and surveying was carried out from a place of safety while trains were running. The scans allowed us to easily identify where the contact wire was within the minimum distance permitted from bridge soffits. Sections where the catenary wire was lower than the contact wire were also identified. A complete 3D plan of the entire area was delivered including rails, contact wire, catenary wire, droppers, stovepipes, registration points, bridge soffits and gantries. All data came from the scans. Long sections of each wire run and Heights and Staggers were also abstracted from the scan data. |
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