Sellafield site
Everyday we are making Sellafield cleaner, safer, more productive, more cost effective and a better neighbour
The Sellafield site has been operational since the 1940’s, when it was used as a Royal Ordnance factory supporting the war effort. The site is also home to the world’s first commercial nuclear power station – Calder Hall, which operated successfully from 1956 to 2003.
Today the site comprises of a wide range of nuclear facilities, including redundant facilities associated with early defence work, as well as operating facilities associated with the Magnox reprocessing programme, the Thermal Oxide Reprocessing Plant (Thorp), the Sellafield Mox plant and a range of waste treatment plants.
The diagram below gives an overview of the main facilities on the Sellafield site and a brief outline of their functions. Select a section to learn more about what we do at Sellafield.
- Decommissioning and clean-up
- Commercial operations
- Nuclear Waste Treatment/Processing
- Waste and Product Storage Facilities































