Brighton Mainline is a key commuter line, quadruple track for much of its length, historically operated by a simplified Bi-Directional signalling system. Where only a single track was available only one train could pass in the reverse direction every 10 minutes.
Passing traffic in both directions meant the capacity was at best three trains per hour either way. In addition to signalling operating issues, the poor condition of Balcombe Tunnel meant that major works were required. Solutions were needed to keep the service running smoothly during periods of ‘reverse’ working.
The nature of the line, with many rail connections on flat junctions, means it is very susceptible to delays. Train operations required six trains per hour, minimum, in each direction utilising one line. Kier was awarded the project to install the Westplex system, replacing all main lineside cables in the long bidirectional section between Keymer Junction and Preston Park.
Kier provided full bidirectional working between Balcombe Junction and Haywards Heath. This resulted in a significant operational improvement on the BML under perturbed working and was a welcomed success. Kier replaced nine 650V power feeders and cabling with new incoming feeding arrangement FSR’s and FSPs. Each FSR was designed to each Substation, saving valuable programme time and money. All 650V feeders were fitted with insulation monitoring units, monitored by Intelligent.
The Westplex equipment is a safety-critical microprocessor-based data transmission system designed to interface directly with signalling relays and provides a positive impact on sustainability, maintenance and train operations.
By installing Westplex, all the lineside main cable is replaced with a 6pr telecoms cable which transmits signalling controls and indications safely via the Westplex transmission system. The existing lineside infrastructure is maintained and controlled from the Westplex modules. In the event of cable failure, diversity is provided through the FTN system.
Increased operational reliability was achieved on BML through renewal of trackside signalling equipment such as replacing existing Reed track circuits & AC track circuits with EBI200 track circuits; recovery of redundant IBJ's; replacing filament type signal heads with Dorman LED type and replacement of multicore cables with Westplex transmission system. The new Dorman LED signal heads offer increased reliability, ease of maintenance, and lower fault attendance. Standardising these signal types presents a better profile to drivers.
One of the key benefits of Westplex is that the system configuration data is stored in an EEPROM within the interconnecting connector, allowing the maintainer to replace modules without the need for the downloading/configuring of site-specific configuration data. This provides faster fault rectification time and reduces spares holding requirements. These improvements on the BML, especially completing the introduction of Westplex, will provide a more resilient signalling system for years to come.
Delivering a 100% BIM3 compliant utilities design at one of London’s busiest interchanges, Bank Station. Serving 73 million passengers annually, situated between London Bridge and the Bank of England.
Constructing two railway tunnels that run for 6.4km between the Royal Oak portal and the new Farringdon Crossrail station in Central London. Huge scale building of station tunnel caverns at Bond Street, Tottenham Court Road and Farringdon for the new Elizabeth line.
The Luton DART project is a joint venture project between VolkerFitzpatrick and Kier (VFK). This new state-of-the-art guided mass passenger transit system will link the airport terminal building to Luton Airport Parkway station. Due to open in 2021 it will reduce journey time from the terminal to central London to under 30 minutes.
Delivering a new secondary school on the Great Western Park Development in Didcot, ensuring it was completed in time for the start of the new school year, creating extensive outdoor sports facilities as well as a building for 1,200 students and working alongside contractors delivering housing projects.
Working with Network Rail to keep the line between Ipswich and Lowestoft up and running. Replacing the line's Radio Electronic Token Block (RETB) system after the frequencies were allocated to the MOD, coming up with a workable solution with the client and ensuring this vital rural connection remained in service.
A step change in the way DNO capital works and connections are delivered. Together with UK Power Networks and our Alliance partners, we deliver the improvements necessary to achieve OFGEM-mandated outputs in Customer Service, Safety, Sustainability and Network Health and Reliability.
Designing and building the UK’s first dedicated centre for cancer immunology research to bring together world-leading cancer scientists and enable interdisciplinary teams to expand clinical trials and develop more lifesaving drugs.
Working with Surrey County Council and the supply chain to deliver £120m of work for £100m on the fourth busiest road network in the UK, dramatically improving the condition of the roads in the county, driving down the cost of materials and increasing investment in new techniques and equipment.
The Ogilvie (formerly known as the Sanger Sequencing Building) provides 4,430m² of flexible laboratory and office space and an integrated energy centre which will feed future developments on the greenfield site.
Identifying this 20.5 acre site in Reading as a strategic development opportunity, delivering a retail and leisure scheme including new homes, a hotel, retail space, car showrooms and industrial units, trailing new innovations and generating 263 jobs and £138m of social value.
The redevelopment of Wexham Park Hospital Women’s Services consisted of the remodelling of the Maternity and Gynaecology Facilities. This forming brand new, state of the art facilities for Slough and the surrounding areas.
Regenerating Britain's oldest market in 10 weeks, collaborating with a wide range of supply chain partners, engaging with the local residents, businesses and traders and bringing a delicate touch to a much loved historical site.
A high profile 3km route clearance of 1500 utility conflicts through Edinburgh city centre, delivered within budget and achieving all programme milestones, whilst minimising disruption to local businesses and residents.
Partnering Surrey County Council with an innovative scheme that brings vulnerable people in social care into the workplace, supporting these candidates to be able to carry out basic highway works in the community and helping tackle the national social care time bomb.
Supporting the power requirement for ongoing Brighton Main Line signalling renewal works. We installed a Westplex System in order to upgrade a key commuter line to increase the quantity of trains able to utilise the line.
The design and construction of a highly sustainable Passivhaus ‘Plus’ 1,400m2 office building. Laid out over three floors to accommodate up to 125 people, providing local office space for individuals and small businesses.