Crossness Sewage Treatment Works

Crossness Sewage Treatment Works (STW) in East London is one of the largest treatment works in the UK, serving approximately two million people. The £145m upgrade project forms part of Thames Water’s London Tideway Improvements programme,which comprises major engineering schemes to improve water quality in the River Thames. This programme includes upgrading London’s five major STWs, so they can treat more sewage and to a higher standard; and creating the Lee Tunnel and proposed Thames Tunnel, designed to prevent pollution entering the Thames from 35 sewer overflow points along the river. Thames Water appointed Tamesis, a joint venture between Laing O’Rourke and Imtech Process, as the contractor for theCrossness STW upgrade.

Project Overview:

  • End User: Thames Water
  • Client: TAMESIS Joint Venture
  • Project: Mechanical Installation Works, New AerationSystem, Crossness STW
  • Project Value: £ 145 Million
  • GMK Contract Value: £ 1.3 Million

GMK Services Provided:

  • Project Management
  • Health & Safety Management
  • Supply, Fabrication and Installation of Stainless Steel Pipework System ranging from DN1600 to DN100
  • NDT Testing of Pipework to 10% X-Ray and 100% Dye-Pen
  • Supply, Fabrication and Installation of Galvanised Mild Steel Pipework SupportStructures
  • Full Testing and Commissioning of Installed Systems
  • Provision of As-built Drawings and Operation and Maintenance Manuals

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