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Winfrith Atomic Energy Establishment (or AEE Winfrith) was a United Kingdom Atomic Energy Authority site near Winfrith Newburgh in Dorset. It covered an area on Winfrith Heath to the west of the village of Wool between the A352 road and the London Waterloo to Weymouth railway line. It was home to a demonstration steam-generating heavy water reactor (SGHWR) providing power to the National Grid, as well as to a nuclear research facility. ==Nuclear research== Winfrith Atomic Energy Establishment was built for the construction and operation of experimental and research reactors. Construction began in 1957, and the first low-energy reactor (ZENITH) was completed and in operation by the end of 1959.〔 This was quickly followed by two others (NESTOR) in 1961 and (DIMPLE) in 1962.〔 The last reactor was shut down in 1995, although decommissioning of the site will not finish till 2021.〔(Research Sites Restoration Limited website )〕 Winfrith housed several experimental reactors during its lifetime. There were also impact test facilities, and a used nuclear fuel examination facility with the associated hot cells. Experimental reactors included: *ZENITH (Zero Energy High Temperature Reactor) built in 1959. It was a zero-energy reactor which was used to study the physics of high temperature reactors. *NESTOR (Neutron Source Thermal Reactor) built in 1961. Based on the JASON reactor operated by the Hawker Siddeley Nuclear Power Corporation at Langley, Berkshire. NESTOR was a small research reactor which produced a large amount of neutrons making it a useful tool for investigating the design of power-producing reactors and carrying out sub-critical experiments on core assemblies.〔 *DIMPLE (Deuterium Moderated Pile of Low Energy) built in 1962. Originally built at Harwell in 1954, Dimple was Britain's first heavy water reactor. It was moved to Winfrith in 1962 and extensively modified and rebuilt for studies of the physics of reactor systems moderated by light or heavy water and by an organic moderator. *ZEBRA (Zero Energy Breeder Reactor Assembly) built in 1962. Designed for studying the neutron physics of a wide variety of fuel assemblies containing uranium and plutonium. *HECTOR (Hot Enriched Carbon-moderated Thermal Oscillator Reactor) built in 1963. Designed to examine the suitability of various materials for use in power reactors. *JUNO, built in 1964. Built from the components of a zero-energy graphite moderated reactor called NERO, and from a sub-critical assembly used for steam generating heavy water reactor investigations, it was used to provide the information needed for the design of small power reactor cores. *Dragon. The Dragon reactor was built in 1964.〔 It was the first power reactor built at Winfrith.〔 It was an experimental reactor built as a European inter-governmental research and development project.〔 It was the first demonstration high-temperature gas-cooled reactor (HTGR) and had a thermal output of 20 MW. It operated until 1976. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Winfrith」の詳細全文を読む スポンサード リンク
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