VVB

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Thames Tideway

DESIGN, INSTALLATION, COMMISSIONING & MAINTENANCE OF TEMPORARY ELECTRICAL & COMMUNICATION SYSTEMS

The Thames Tideway project is an urgently required new major sewer serving the capital and protecting the tidal river Thames from pollution. Sprawling 25km and closely following the rivers course from Acton storm tanks in the west to Abbey Mills pumping station in the east of London.

VVB Contract Value: £15m

Our Role Involved

  • Design, Supply, Installation and Commissioning of Temporary Electrical Services
  • Design, Supply, Installation and Commissioning of Temporary Communication Services
  • Electrical Site Setup for TBM Assembly, Launch & Surface Support
  • Maintenance of Temporary Tunnel Services
  • Site Demobilisation

OUR SCOPE INCLUDED

TEMPORARY TUNNEL SYSTEMS

DESIGN

  • Early involvement (pre site)
  • Design of temporary electrical systems
  • Design of temporary Communication systems

TEMPORARY ELECTRICAL SYSTEMS

  • Site setup
  • TBM Temporary electrical supplies above and below ground
  • Installation & Commissioning of HV/LV and lighting systems
  • Maintenance and Electrical Safety Checks
  • HV Switching

TUNNEL MONITORING AND COMMUNICATIONS

  • Telephones
  • Fibre Optic Cabling
  • Surface Data System
  • Fixed Gas Monitoring

MAINTENANCE OF ELECTRICAL & COMMUNICATION SYSTEMS

  • Maintain temporary electrics throughout tunnel
  • Surface support for electrical and communication systems
  • Demobilisation of all temporary systems

The overall programme has been divided into three sections; Western, Central and Eastern and joint ventures have been formed with tier one contractors. VVB Engineering has been awarded its contract with the Ferrovial Agroman and Laing O’Rourke joint venture (FLO JV) who are responsible for the delivery of the central section – the largest tunnel drive section worth around £745m. The central section contract is comprised of two tunnel drives covering a total distance of 12.7km (7.2m ID), both launch from Kirtling Street in Battersea; the first heads West 5km to Carnwath Road in Fullham, the second sets off East 7.7km to Chambers Wharf in Bermondsey.

VVB Engineering began its works with the joint venture in September 2015, primarily at the main drive site, located at Kirtling Street and at Black Friars Foreshore. There are eight shafts along the route, varying in depth of between 42m and 62m with six connecting tunnels. The engineering support being provided to the Central Contract is for the site setup design and installation of HV and site wide power distribution and temporary lighting to support the construction of the main tunnel drives and shafts and also the D-Wall construction by Spanish contractor Geocisa.