Value: £25m
Timeline: 2018 – 2021
Client: Ferrovial Laing O’Rourke (FLO) JV
Contract Conditions: NEC Option A

Project Description: The new Northern Line Extension (NLE) into Battersea Power Station Development. New Tunnel, Shafts & Headhouse and two new Stations. The Northern Line Extension between Kennington and Battersea has helped regenerate the Vauxhall, Nine Elms and Battersea areas by supporting new jobs and homes. The extension was completed in autumn 2021.

The Kennington Loop currently provides a turning facility for the terminating Charing Cross Branch Northern Line trains at Kennington Station. The extension to Battersea required connections to be made at two locations in the loop to allow new northbound and southbound running tunnels to be constructed. These connections had to be made at the existing northbound and southbound straight sections of the Kennington Loop.

• Electrical Engineering
• Design

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Design & Delivery Detail:

• RIBA Stage 5 design & RIBA 4 Critical Packages
• Tunnel vent system, electrical, fire and controls
• Shafts and headhouse electrical & fire installation
• OTE – fire rated ductwork
• Mechanical plant – fans, transitions, attenuators, dampers inc. secondary steelwork
• Structural steelwork
• Fire strategies
• Control system – PLC’s – SIL Compliance
• Cable management systems for all electrical services
• Small power including supplies for specialist systems such as fire alarm, security, mechanical supplies together with the associated earthing
• Internal and external Lighting with emergency lighting supplied from a UPS / central battery system
• Installation of LV Distribution boards, ATS unit, Isolators and associated containment
• Supply of all plant and equipment to complete the installation
• Testing & Commissioning

Client Key Issues: Critical Opening Date for TfL and Critical Systems Integration
Client Benefits: Front end constructability of design, Line extension opened 4 months early

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