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,
Pilgrim Nuclear Power Station effect kills plant and animal life around reactor discharge systems by curtailing the light and oxygen they need to survive; however, the intake and discharge canals remain a popular and lucrative local recreational fishing spot for local residents. The Nuclear Regulatory Commission's estimate of the risk each year of an earthquake intense enough to cause core damage to the reactor at Pilgrim was 1 in 14,493, according to an NRC study published in August 2010. Pilgrim Nuclear Power Station Pilgrim Nuclear Power Station (PNPS) is the only nuclear power plant operating in Massachusetts. It is located in the Manomet section