Rail Tech complete Signalling works at North Fambridge

The Rail Tech Group recently completed its signalling work at North Fambridge on behalf of C Spencer who in turn were undertaking the main platform extension works for Network Rail. The primary aim of the North Fambridge Loop Extension project was to provide the appropriate infrastructure to facilitate the introduction of 12 car trains between Liverpool Street and Wickford stations, some of these continuing albeit with rear 4 carriages locked out of use to Southminster Station.

The Rail Tech Group was selected by C Spencer Ltd to undertake all the signalling changes that were required as part of this overall platform extension scheme. This included all GRIP 6-8 deliverables such as the project management, CRE responsibilities, task briefing, work package planning and the procurement, installation and test & commissioning of all signalling assets.

The signalling in the station area was controlled from London Liverpool Street via a SSI style interlocking and utilised colour light signals and track circuit block. The existing arrangements for train detection in the area around Fambridge station were predominantly DC medium voltage, AC immune track circuits and these were retained throughout to maintain uniformity of design and to retain the required levels of immunisation.

Deliverables that were encountered during the project included: 

• Alterations to existing track circuits (BC, BD, BE, BH & BJ)
• Installation of New LED Signals 696 & 651
• Installation of New TPWS Equipment
• Installation of New AWS
• Installation of New In-Bearer Clamplock Point Machine
• Installation of New Pre-fabricated Location Case
• Alterations & Wiring Modifications to the existing interlocking & locations.
• Repositioning of Signal Post Telephones
• Signal Works Testing / Commissioning of New Signalling equipment.
• Decommission and Removal of redundant signalling equipment

During the programme of works, the major blockade date was significantly brought forward and an accelerated programme was put in place. Despite this major change all deliverables were met and the project remained on time and within budget.