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,
Hartlepool Nuclear Power Station Dungeness, the Central Electricity Generating Board (CEGB) proposed their third AGR station in 1967 to be situated on the edge of the Durham coalfield, near the seaside resort of Seaton Carew. The proposal came at a time when the CEGB's move toward alternative fuels to coal, threatened the coal industry's existence. Despite this, and a short ministerial delay, the plans for the Seaton Carew station (which became known as Hartlepool nuclear power station) went ahead. Because the construction of the station was given the go ahead, the National Coal Board were not able to get the CEGB behind the plans