- The first phase of the DRAGON reactor decommissioning was completed two months ahead of schedule. Built during the 1960s and operational until 1975 decommissioning re-started in 2011 after a period of care and maintenance. The additional funding became available for critical path decommissioning projects at the site as a pre-cursor to the Winfrith optimisation plan which has now been fully approved.
- Decommissioning of Winfrith’s Steam Generating Heavy Water Reactor (SGHWR) primary containment plant has begun. The reactor, operational from 1968 to 1990, is now undergoing substantial decommissioning as part of the Winfrith Optimisation Programme.
- Winfrith’s Waste Encapsulation Treatment Plant (WETP) was decommissioned and demolished in 2012 after five years of operation. WETP was built as a one-off facility to process and encapsulate legacy sludge arising from the historic operations of the SGHWR reactor. It processed a total of 1,068 encapsulated drums in its lifetime.
- 0.6M thick concrete walls of Winfrith’s External Active Sludge Tanks (EAST) have been decommissioned, removed and loaded ready for waste consignment. The tanks built to store sludges generated during the operations of SGHWR were decommissioned using innovative diamond wire cutting techniques.
- In 2012 the extensive decommissioning and demolition of three large buildings in the A5 area, along with ancillary buildings, was completed.
- Some 10 hectares of land at Winfrith was delicensed in 2012, representing an important milestone in the Dorset Site’s decommissioning programme.
- During 2009 Active Handling Building (A59) was successfully decommissioned within sanctioned programme and cost. A59 was a significant category 1 nuclear facility and is one of the first of its type to be decommissioned. Since the early 1960s the A59 building operated as a Post Irradiation Examination facility and included high activity cave lines, pressurised suit operations area, as well as general workshops and operations areas. An excellent safety record was maintained throughout the decommissioning process.
For more information see our achievements brochure.
Updated August 2013