Sellafield the Ministry of Supply (MoS), then from 1954 by the United Kingdom Atomic Energy Authority (UKAEA) and then, following the division of UKAEA in 1971, by British Nuclear Fuels Ltd (BNFL). Since 1 April 2005, it has been owned by the Nuclear Decommissioning Authority (NDA) and is now operated by Sellafield Ltd. In 2008, the NDA awarded Nuclear Management Partners (NMP) the position of Parent Body Organisation of Sellafield Ltd. under their standard management model for NDA sites. This consortium, composed of US company URS, British company AMEC, and AREVA of France, was initially awarded a contract for five years,
Oldbury Nuclear Power Station an urban area twice the size of Bristol. Reactor 1 went critical on 18 September 1967 and first generated electricity on 9 November 1967, Reactor 2 started generating electricity in April 1968. The construction was undertaken by a consortium known as The Nuclear Power Group ('TNPG'). The reactors were supplied by TNPG and the turbines by AEI and C. A. Parsons & Co. The main civil engineering contractor was Sir Robert McAlpine. Construction on site began in 1961. Oldbury was the first nuclear power station in the UK to use prestressed concrete pressure vessels, earlier Magnox reactors having used steel