Thames Tideway Tunnel - C405 Main Works West - Project wide Access Covers

The Thames Tideway Tunnel project (the Project) will control CSO discharges by intercepting and diverting combined sewage flows into a new storage and transfer tunnel. The main tunnel will run from Acton Storm Tanks in west London to Abbey Mills Pumping Station in the east, where it will connect to the Lee Tunnel, which will transfer the combined sewage to Beckton Sewage Treatment Works for treatment. The Project extends from Acton Storm Tanks in west London, to Abbey Mills Pumping Station in east London. The Project includes associated works at Beckton STW, Shad Thames Pumping Station and Bekesbourne Street.

The geographic layout of the Project and local authorities through which it passes is shown in Figure 1.

The Project comprises:

• a.tunnels:
• i.a main tunnel which will capture and store combined sewage from CSOs along its route and transfer it to Abbey Mills Pumping Station, from where the Lee Tunnel will transfer it for treatment at Beckton Sewage Treatment Works
• ii.11 connection tunnels, which will link flows from CSOs to the main tunnel.
• b.Worksites:
• i.five main tunnel Worksites (drive and/or reception sites)
• ii.16 CSO Worksites
• iii.two System modification Worksites Thames Tideway Tunnel
• iv.works at Beckton Sewage Treatment works.

Scope of Works

The scope is for the supply of Stainless Steel, Galvanized & Ductile Iron Access Covers as detailed in TTW - Access Covers Specification Extracts v2 and Access Covers Procurement Schedule v3 together with all documents and specifications listed within this Invitation To Tender. The Access Covers will be required for our Carnwath Road, Putney, Acton, King Georges Park and Barn Elms Worksites.

Technical Responses

Commercial Response

Additional information: Acton Storm Tanks Worksite