Elizabeth Line Signalling Power and E&P

Production of detailed designs for over 160 locations integrating new PSPs and FSPs for the migration to Class II signalling power systems.

Client

Network Rail

Project Completed

Mar 2018

The Challenge for Softech

On the Elizabeth line (formally known as Crossrail), between Shenfield and Liverpool Street, signalling location cases faced a myriad of challenges including earthing faults and a single power dependancy. The existing infrastructure utilized IT Class 1 radial feeders feeding BX650 supply, which did not comply with the requirements of BS 7671. Double end feeding of signalling power was provided to increase reliability in case of single power failure. Complicating matters, source records were scattered across various projects, making the consolidation of information and design production an arduous task.

Softech’s Solutions

Softech efficiently tackled the challenge by implementing a comprehensive strategy, replacing non-compliant radial feeders with dual end-fed Class II ring networks. Overcoming logistical hurdles, we meticulously designed solutions for over 160 locations along the Great Eastern Railway between Liverpool Street and Shenfield, integrating new Power Supply Points (PSPs) and Functional Supply Points (FSPs).

criss crossed rail alignment design engineered by a railway pway design team

Our approach prioritised safety, managing touch voltages and ensuring proper termination of CPCs. By securing necessary ODAs for source records, we seamlessly executed the migration to a Class II signalling power system, demonstrating both technical prowess and effective project management. In order to reduce the installation, test and commissioning cost and time, Softech incorporated special design considerations.

The Result

By implementing these changes, the entire signalling power supply system received enhanced protection, ensuring compliance with safety standards and addressing the shortcomings of the previous Class 1 system. This comprehensive upgrade not only met the regulatory requirements but also contributed to the overall reliability and safety of the signalling infrastructure between Shenfield and Liverpool Street on the Elizabeth Line.

Feedback

“Softech have done a fantastic job…it has been a real pleasure working with them.”

5/5

How would you rate the technical knowledge and skills of Softech Rail’s staff?

5/5

How likely is it that you would be happy to work with Softech Rail in the future?

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Sean Tarpey

“Softech have done a fantastic job in delivering the full scope of work. The Crossrail Engineering Team found their work to be very thorough and it has been a real pleasure working with them.”

Senior Project Engineer (DPE) Crossrail

Our Work: Case Studies

Haxby Telecoms Design
Carrying out site survey and telecoms detailed design for NR owned assets which includes station information and surveillance system.
Jan 26, 2024
Eastbourne Siding
Softech conducted a condition assessment to confirm that the existing signalling system is capable of performing the required train movements.
Dec 5, 2023
Radlett
This study was completed to assess how best to path down direction freight trains between the Midland Main Line and the proposed SRFI at Radlett.
Jan 12, 2016
Richmond Platform 3
Enhanced rail signalling for Richmond Platform 3 under LOCIP ensures efficient 5-car operations. Softech's ensures optimal design solutions.
Jul 16, 2015
Clapham Junction Platform 16
difficulties at Platform 16 in dispatching longer trains led to Softech's engagement to look into Signalling alterations to overcome operational issue...
Sep 16, 2014

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