previous projects

DLR Power Resilience

Dyer and Butler

Installation of new negative cabling to provide greater resilience to the existing DLR system between Beckton and Custom House; London City Airport and Woolwich; Bank and Limehouse; Tower Gateway and Royal Mint Street.

Works included the pulling in of large quantities of 935sqmm and 1000sqmm cables via RRV, Unimog and Engineering Train, terminating and connecting cables to the running rails at intervals along each section.

Works also included the installation of a series of cross bonds along the same sections.

Beckton DLR Depot Substation

UK Power Networks

Electrical Support provided for installation works for the staged works within the Substation and the depot.

ETE installation within the substation, including at Rectifiers, Track Feeders and Negative Returns to new and existing equipment.

LV and HV cable pulling in the Substation, throughout the Depot, within equipment rooms and to the new LV substation, in accordance with the staged installation programme.

CP6 Kent Depot & Sidings safer walking routes

BAM Nuttall

At Gillingham, Ramsgate, Victoria, West St Leonards, Grove Park and Slade Green depots, safety walkways for staff required improvement, the works consisted of the following:-

Replacement of Guard Boarding in areas where the conductor rail was in correct gauge with the track.

Widening/ creation of compliant cross track walking routes (Conductor rail and cable installation).

Replacement of TD, installation of lighting to allow for the safe manual operation at Bo- Peep Substation for West St Leonards Depot feeder.

Port of Felixstowe - Power Upgrade

UK Power Networks

Power Upgrade which included the installation of a new HV ring to new substations within the shipping port. HV Cable pulls from existing to new HV switching stations via new and existing buried ducts within the live and operational port, carried out in stages to minimise disruption.

Installation works also included the cable pull and installation for EV feeders from new substation to Changing stations for electric forklifts.

Clapham Junction Depot Safer Walking Routes

Sunville Rail

Electrical and ETE Design to improve the depot walkways and access for drivers and staff within the depot. including the following:-

Creation of compliant cross track walking routes, cutting back conductor rail and installing new/ modifying guard boarding sections. ensuring that electric trains were not gapped.

Transposition of conductor rails to assist with safer walking routes along side of siding and depot roads.

Installation of shoe protection boarding on CET apron, to provide a barrier between shoe gear in this location.

Installation of new and repair of existing lighting to improve dark areas within the depot, including under the stations pedestrian walkway, at the buffer stops and in some areas outside of sheds.

Primrose Hill - CTS

UK Power Networks

The replacement of 4no. TIS located on track with manual only CTS units at Primrose Hill, positioned away from the track in an readily accessible location, to allow staff to quickly and safely operate switches which are positioned in complexed and hard to access areas on track, resulting in improved safety and quicker isolations in this location.

Detailed Civil and ETE Design undertaken from the previously completed original design, including intrusive surveys, bespoke solutions to the existing layout and infrastructure to allow for a compliant installation.

The Installation including the undertaking of Civil works for the equipment bases and surrounding area, cable apertures, wall mounted cable ladders and troughing. In addition, utilising the existing cable management systems and cross passage sections.

Equipment delivery, cable pulling for both positive and negative, installation of high and low level negative cable connection boxes (spider plates). Successful commissioning and section proving was completed over a series of stages.

Mersey Rail - Hunts Cross

Pod - Trak

Installation of positive and negative cables at Hunts Cross Station, works were part of the Mersey Rail Project and carried out with along with a combined Track and Signalling renewal. Provided CRE- C for the ETE works.

PCRID and COLR installation of the Northern Line Extension

NG Bailey

Installation of PCRID Permanent Current Rail Indicator Devices and COLR

Current On-Line Relays (COLRs) and negative bonding for the Northern Line Extension, from Battersea to Kennington Station on the Northbound and Southbound lines.

Museum of London - Snowhill Protection Deck

Kier

Electrical bonding of scaffolding erected to the underside of railway arches and between live overhead catenary. to facilitate the strengthening of the structure for the creation of the museum of London beneath Smithfield's market.

Works including the installation, modifications, weekly non-intrusive and intrusive inspections (carried out before, during and after COVID measures in place) and the staged removal.

South East NSCD Phase 3 Package 3

BAM Nutall

Project Overview

TRE successfully completed a multi-site infrastructure upgrade involving the installation and modification of DC track feeder and negative return cables across key substations and trackside locations. The works were executed to improve electrical reliability and support future operational capacity in the 3rdrail area.

Key Achievements

· Total DC Track Feeder Cables Installed: Over 50 cables across 8 substations and 3 trackside locations, totalling approx. 3,000m of 1000mm² cable.

· Negative Return System Upgrade: At Paddock Wood Substation, a full renewal of the negative return system was completed with 8 × 800mm² aluminium cables (1635m).

· Conductor Rail Modifications: Ramp ends formed and conductor rail pots installed at Old Kent Road, Roffey Road and Victoria, improving safety and accessibility.

· Hookswitch Removals: Hookswitches removed at Nunhead, Old Kent Road and Paddock Wood, streamlining the electrical layout.

Highlights

· Dunton Green: Installed 8 × 1000mm² cables (444m); across sections P205–P208.

· Ford: Installed 2 × 1000mm² cables (140m).

· Nunhead: Installed 12 × 1000mm² cables (approx. 610m); removed 2 Hookswitches.

· Paddock Wood: Largest scope - 12 × 1000mm² DC feeders and 8 × 800mm² negative return cables; full system renewal completed (5722m).

· Victoria: Installed 2 × 1000mm² cables (200m); removed 32m of conductor rail.

Execution Strategy

· Cable Installation: Conducted during track access shifts using a combination of manpower and winch systems to minimize disruption.

· Termination & Commissioning: Terminated all cables at substations via Track Disconnectors (TDs) where required, and conductor rails. Existing cables were safely removed and disposed of.

· Safety & Compliance: All works were completed in accordance with NSCD scope requirements and BAM’s / Network Rail’s safety protocols.

South East NSCD Phase 4

BAM Nutall

Works were to undertake surveys and produce detailed designs at 6 sites in London and South East for the ETE element of works associated with NSCD installations. which included the replacement of DC track feeder and negative return cabling, the modification of substation/ TP Hut switchgear entry points, the re- utilisation of existing UTXs at a number of these sites.

Sites included Chislehurst, Voltaire Road, Walworth, Bromley South, Latchmere, and Balham

DC Lug Replacement Keymer Junction to Lewes

UK Power Networks

Undertaking survey and carrying out correlation of record drawings between the scoped mileages at Keymer Junction and Lewes during midweek night access.

Undertaking works in various weekend possessions between Keymer Junction and Lewes, cable replacement on a like for like basis to ensure that works were delivered on time and with minimal risk to the operational railway.

DC Lug Replacement Sydenham Corridor

UK Power Networks

Undertaking survey and carrying out correlation of record drawings between the scoped mileages at London Bridge and Norwood Junction during weekend and midweek night access opportunities.

Undertaking works in various weekend possessions between London Bridge and Norwood Junction, cable replacement on a like for like basis to ensure that works were delivered on time and with minimal risk to the operational railway.

DC Lug Replacement CP6 Wandsworth Common to Crystal Palace;

UK Power Networks

Undertaking survey and carrying out correlation of record drawings between the scoped mileages at Wandsworth Common and Crystal Palace during weekend and midweek night access opportunities.

Undertaking works in various weekend possessions between Wandsworth Common and Crystal Palace, cable replacement on a like for like basis to ensure that works were delivered on time and with minimal risk to the operational railway.

DC Lug Replacement South East CP6

Network Rail, Works Delivery (Kent)

· Led replacement of failing DC conductor rail lugs with new-style positive DC lugs across high-demand routes

· Delivered successful installation volumes of 900 no. in Year 1 and 2,000 no. in Year 2

· Maintained exemplary safety performance and met tight delivery timescales

· Adapted work processes to comply with COVID-19 protocols

· Contributed to Network Rail’s wider combined delivery strategy through continued multi-year support

DC Lug and Track Feeder replacement at Brighton Depot CP6

Network Rail, Works Delivery (Kent)

· Led replacement of failing DC cables and conductor rail lugs with new-style positive DC lugs within the depot.

· Maintained exemplary safety performance and met tight delivery timescales

· Adapted work processes to comply with COVID-19 protocols

· Contributed to Network Rail’s wider combined delivery strategy through continued multi-year support

South East NSCD Phase 2

Kier

Successfully carrying out ETE positive and negative cables, including NSCD and conductor rail modifications at various site through London and Kent, ensuring that the clients programme of works and timescales for completion are met to meet milestone dates agreed with NWR.

Works at Meopham Substation, West Dulwich, Catford Substation, Slade Green Substation, Sydenham Hill Substation and Ludgate Cellars Substation.

In addition to the works above - Provided staged CTDs to the client for issuing to Network Rail drawing office at the following sites:-

o Elmers End

o Greenwich

o Charlton

o New Eltham

o Woolwich Dockyard

o Lee Substation

o Crayford Substation

o Shortlands Substation

o Penge Substation

o Littlehampton Substation

o Brixton Substation

o Blackheath Substation

o Eltham Well Hall Substation

o Dartford Substation

Wessex CTS

McNicholas (Kier)

Installation of new positive and negative cable, carrying out connections and carrying out modifications/ removal of existing cabling for 15 new remotely controlled CTS units at critical locations across the Wessex area.

These locations were located between Addlestone to Weybridge; Berrylands to New Malden; Alderhot to Pirbright and Woking.

Wessex B5 isolations, CMSD Phase 1 & Phase 2

McNicholas (Kier)

Collaborating with various teams to provide engineering support and act as CRE for Construction, ensuring all works within a number of NSCD related projects were completed safely and ensuring that timelines and key milestones were met.

The scope included:

Engineering and construction support for 36 substations/TP huts and 112 DC track feeder circuits, following TFD, direct, or TD recommendations.

Undertaking the installation of positive and negative cable installations and connections, positive and negative CMSD cable connections to DCCB, negative busbar, and NSCD devices throughout sites located in South West and West London, Hampshire and Wessex.

Thameslink Resilience Project

Kier

· Supported infrastructure resilience by removing obsolete and unreliable lineside equipment

· Delivered negative bonding disconnection and installation on existing and new track equipment

· Implemented new signalling and negative bonding arrangements in line with staged project programme and RRD

· Ensured compliance with technical standards and safe delivery within defined project phases

Canal Junction RFL/ELL Substation - DC track feeder replacement

Transport for London (TfL) and London Overground via Cleshar

Circuits (L960A, L960B, L926A, and L962B) at Canal Junction Substation were incorrectly indicating that track sections were live when they were actually dead. To resolve this, Cleshar and TRE were contracted to design and install new DC cables. These upgraded cables follow a shorter, more efficient route from the substation’s DC circuit breaker busbars to the conductor rails, replacing the existing faulty cables

Sussex PSE - ETE Enhancements

McNicholas (Kier)

· Provided engineering support and acted as CRE (Contractor’s Responsible Engineer) for ETE (Electrification Traction Engineering) and HV (High Voltage) construction.

· Delivered GRIP 5 design and executed works aligned with project timelines, targeting a key electrical compliance milestone within Control Period 5 (CP5).

Spanned 100 miles across 24 ELRs (Engineering Line References), including:

· Streatham to Leatherhead

· Three Bridges to Arundel

· Chichester and Bognor to Eastbourne and West St Leonards

· Preston Park to Brighton

Key Deliverables:

· Upgraded 34 substations and TP huts

· Replaced and doubled 152 DC track feeder circuits

· Installed 129,000 meters of DC cable

· Replaced 10 hookswitches, and upgraded 350 hookswitches to TIS

· Installed 2 new CTS (Cable Termination Structures) and enhanced 4 existing CTS

Reinforced negative return cabling in 23 critical areas

New Cross Gate RFL/ELL Depot – DC track feeder replacement

Transport for London

Resolved a long-standing issue affecting DC track feeder power supply to the MFB.

TRE led intrusive surveys, reporting, and design to re-line existing in-situ ducts with a second skin, preventing further cable damage

Acted as Principal Contractor: planned, resourced, and delivered works safely and on schedule

Ensured zero disruption to depot operations during execution

Reading 10 Car - ETE Enhancements

McNicholas (Kier)

Reading to Virginia Water (28 miles across 4 ELRs: PAA1, AAV, RDG1 & RDG2)

Provided engineering and on-site construction support in line with project milestones

Provided CRE for ETE construction activities, ensuring compliance with technical standards

Delivered works across 12 substations/TP huts

Replaced and doubled 44 DC track feeder circuits

Installed 9,400m of DC cable

Replaced 21 hookswitches and upgraded 77 to Trackside Isolation Switches (TIS)