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Cost-effective electrification of low clearance bridges

Cost-effective electrification of low clearance bridges
Cost-effective electrification of low clearance bridges
Civil engineering works are a significant cost factor when electrifying a legacy rail network. In order to satisfy the clearing distances according to BS EN 50124-1, a number of structures from the Victorian era would need to be rebuilt. These clearing distances were established in the 1970s and have not been reviewed in light of advances in electrical insulation coordination and materials research. Network Rail and the University of Southampton investigated the effect of different mitigation strategies in order to reduce the clearing distances in a safe manner. Different combinations of the use of a surge arrestor, different types of polymeric wire covering, bridge arms and an insulating coating on the simulated bridge structure have been tested under laboratory conditions. The empirical results demonstrated that the combination of a surge arrestor and polyurea coating offer the most effective reduction of the clearing distance, with wire covers having a minor contribution under certain circumstances. These findings were then applied to the Cardiff Intersection Bridge in Wales, UK, leading to cost savings of approximately £30-40 million as part of this electrification project.
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Palmer, Neil
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Stainton, Richard
f4e9ee50-3b7e-479d-9a2a-8a6f06977dc8
Naylor, Paul
49605814-9bc1-4193-bf36-b164624339f1
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Lewin, Paul
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Palmer, Neil
c0581034-4d51-4734-9570-252f80432462
Stainton, Richard
f4e9ee50-3b7e-479d-9a2a-8a6f06977dc8
Naylor, Paul
49605814-9bc1-4193-bf36-b164624339f1

Andritsch, Thomas, Lewin, Paul, Palmer, Neil, Stainton, Richard and Naylor, Paul (2022) Cost-effective electrification of low clearance bridges. World Congress on Railway Research 2022, ICC, Birmingham, United Kingdom. 06 - 10 Jun 2022.

Record type: Conference or Workshop Item (Paper)

Abstract

Civil engineering works are a significant cost factor when electrifying a legacy rail network. In order to satisfy the clearing distances according to BS EN 50124-1, a number of structures from the Victorian era would need to be rebuilt. These clearing distances were established in the 1970s and have not been reviewed in light of advances in electrical insulation coordination and materials research. Network Rail and the University of Southampton investigated the effect of different mitigation strategies in order to reduce the clearing distances in a safe manner. Different combinations of the use of a surge arrestor, different types of polymeric wire covering, bridge arms and an insulating coating on the simulated bridge structure have been tested under laboratory conditions. The empirical results demonstrated that the combination of a surge arrestor and polyurea coating offer the most effective reduction of the clearing distance, with wire covers having a minor contribution under certain circumstances. These findings were then applied to the Cardiff Intersection Bridge in Wales, UK, leading to cost savings of approximately £30-40 million as part of this electrification project.

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Published date: June 2022
Venue - Dates: World Congress on Railway Research 2022, ICC, Birmingham, United Kingdom, 2022-06-06 - 2022-06-10

Identifiers

Local EPrints ID: 462770
URI: http://eprints.soton.ac.uk/id/eprint/462770
PURE UUID: 401204bc-37af-4c06-8e8d-36581db62442
ORCID for Thomas Andritsch: ORCID iD orcid.org/0000-0002-3462-022X
ORCID for Paul Lewin: ORCID iD orcid.org/0000-0002-3299-2556

Catalogue record

Date deposited: 04 Jul 2022 19:52
Last modified: 05 Jul 2022 01:47

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Contributors

Author: Thomas Andritsch ORCID iD
Author: Paul Lewin ORCID iD
Author: Neil Palmer
Author: Richard Stainton
Author: Paul Naylor

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