Case Studies

Norwich Victoria Sidings

Mosaic Rail were contracted by Keltbray Aspire to provide signalling design services in order to re-instate Victoria Sidings just outside Norwich. Victoria Sidings became a stabling facility for the new fleet of Bombardier 720/5 EMU sets leased to Greater Anglia.

Mosaic Rail was initially awarded the GRIP 5 signalling contract in April 2019 to reinstate the sidings by removing existing permissive working from Norwich Interlocking as well as altering existing routes from Last to first wheel replacement in the area.

Upon contract award, it was quickly realised that the GRIP 4 documentation received was deficient in terms of compliance and Mosaic Rail was awarded an additional package of work to provide an updated scheme plan and supporting calculations, a compliance report in accordance with NR/L2/SIG/30009/E810, an Operating Requirements Specification and a Driveability assessment.

Working closely with all stakeholders, AiP for the project was accepted by MiSRP and the project moved into GRIP 5 detailed design.

The design team took on the challenge of a reduced programme to produce, check and assure a number of deliverables including Control Tables, detailed Location and Relay Room design, Bonding design, panel designs at Colchester PSB, Trowse Signal Box and the local Maintenance Panel at Norwich RR to achieve full AFC in December 2019.

Mosaic Rail was also asked, as an aside to signallling design, to support Keltbray with procurement of a mainline 4-aspect Dorman iLS signal and auxiliary bonding design which we managed through our subcontractors Unipart Dorman and Andromeda Engineering respectively.

The commissioning was successfully handed back to Greater Anglia and Network Rail on Monday 27th January 2020 as planned without any accidents or injuries.