Active Effluent Pumping Station at SGHWR and DRAGON at Winfrith Site

Tender description

Magnox Winfrith site is currently being decommissioned. One of the site's decommissioning activities is the design and installation of a standalone 'active' effluent pumping station within the Steam Generating Heavy Water Reactor (SGHWR) and DRAGON facilities. SGHWR - Minimally 'active' effluent is to be pumped from an existing 75m3 delay tank into 1250 litre IBCs located on the ground floor of the SGHWR. DRAGON - Minimally 'active' effluent is to be pumped from an existing 2m3 delay tank into 1250 litre IBCs located externally at the DRAGON facility. Once filled, Magnox will arrange for the IBCs to be transported off-site for disposal. The Employer requires a suitably qualified and experienced supplier to design, install, test and commission the pumping systems in accordance with national standards and the Employers acceptance criteria. The systems are to be designed to operate for a minimum of 10 years from the date of installation. At SGHWR, the supplier will be required to survey the existing effluent storage, pump, and filtration systems to assess their compatibility with, and suitably for, Magnox's planned IBC filling requirements. At DRAGON, the supplier will be required to connect into the existing effluent storage, pump, and filtration systems for Magnox's planned IBC filling requirements. The supplier is required to install a safe and controlled method of transferring effluent from the existing delay tanks at both SGHWR and at DRAGON into 1250 Litre IBCs. At SGHWR, the Contractor is also to design and install a safe method of pumping any effluent spilled during IBC filling back into the delay tank via the existing return lines. The delay tanks within the SGHWR and DRAGON facilities are in radioactive controlled areas and the contractor will be required to work to a written system of work. There is no requirement for 'classified' workers. The work is to be completed by end of December 2022.