London Tideway Improvements Scheme
Client Requirement
The Thames Tideway Tunnel (TTT) project, part of the London Tideway Improvements Scheme, was initiated to address combined sewage overflows (CSOs) into the River Thames, as mandated by European and UK environmental regulations.
The project involved constructing a new 25km storage and transfer tunnel to intercept and divert sewage flows, along with associated works at various sites including Beckton Sewage Treatment Works (STW) and pumping stations. To ensure the successful operation of this new infrastructure, TTT required a comprehensive solution for the Motor Control Centres (MCCs), Local Control Panels (LCPs), and Uninterruptable Power Supplies (UPSs) to manage air treatment and venting of sewer gases.
Our Solution
In response to the subcontract works outlined by TTT, we proposed a comprehensive package covering the design, provision, and installation of MCCs, LCPs, and UPSs at each of the tunnel’s 20 Combined Sewer Overflows (CSOs) designed to collect, store and release waste in a controlled manner.
We took full responsibility for the design of the entire subcontract works, ensuring compliance with the Construction (Design and Management) Regulations and liaising with the main contractor to coordinate temporary works design as necessary. The MCCs and LCPs were manufactured in one of our offsite manufacturing facilities to minimise site deliveries, snagging and reduce our carbon footprint.
The design ensured strict criteria related to safe sewage interception and transfer, environmental compliance, operational efficiency, and longevity. We aligned our design with the project’s objective for standardisation of MEICA (Mechanical, Electrical, Instrumentation, Control, and Automation) plant and materials, access arrangements, and operational methods, ensuring consistency, efficiency and the highest standards of workmanship across the project.
The solution not only met the immediate requirements outlined by TTT but also contributed to enhanced project efficiency, quality, compliance, and stakeholder satisfaction. Once complete, the tunnel, will help to transform the water quality in the River Thames.
