Sellafield with extension options to 17 years. On 13 January 2015, the NDA announced that NMP would lose the management contract for Sellafield Ltd. as the "complexity and technical uncertainties presented significantly greater challenges than other NDA sites", and the site was therefore "less well suited" to the NDA's existing standard management model. The new structure, which came into effect on 1 April 2016, saw Sellafield Ltd. become a subsidiary of the NDA. Activities at the Sellafield site primarily support decommissioning of historic plants, and reprocessing fuel from UK and international nuclear reactors. Decommissioning projects include the Windscale Piles, Calder Hall,
Heysham nuclear power station Heysham nuclear power station Heysham Power Station is a nuclear power station located in Heysham, Lancashire, England, operated by EDF Energy. The site is divided into two separately-managed stations, Heysham 1 and Heysham 2, both with two Reactors of the advanced gas-cooled reactor (AGR) type. On 18 October 2010, the British government announced that Heysham was one of the eight sites it considered suitable for future nuclear power stations. On 1 August 2016, Heysham 2's Unit 8 broke the world record for longest continuous operation of a nuclear generator without a shutdown. This record-breaking run exceeds the previous record of