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MH-1A
MH-1A was the first floating nuclear power station. Named ''Sturgis'' after General Samuel D. Sturgis, Jr., this pressurized water reactor built in a converted Liberty ship was part of a series of reactors in the US Army Nuclear Power Program, which aimed to develop small nuclear reactors to generate electrical and space-heating energy primarily at remote, relatively inaccessible sites.〔(Summary of the ANPP )〕 Its designation stood for ''mobile, high power''. After its first criticality in 1967, MH-1A was towed to the Panama Canal Zone that it supplied with 10 MW of electricity from October 1968 to 1975. Its dismantling was started in 2014 and it is anticipated to be completed in under four years.
==Design==
The MH-1A was designed as a towed craft because it was expected to stay anchored for most of its life, making it uneconomical to keep the ship's own propulsion system.〔http://asc.army.mil/docs/pubs/alt/archives/1966/Jun_1966.PDF〕
It contained a single-loop pressurized water reactor, in a 350-ton containment vessel, using low enriched uranium (4% to 7% 235U) as fuel.〔(''Highly Enriched Uranium: Striking A Balance'', p. 4, retrieved 2010 October 25 )〕〔(''Report to Congress on Small Modular Nuclear Reactors'', p. 16, retrieved 2010 October 25 )〕
The MH-1A had an elaborate analog-computer-powered simulator installed at Fort Belvoir.〔(Army Nuclear Power Program ), accessed 14 March 2012.〕 The MH-1A simulator was obtained by Memphis State University Center for Nuclear Studies in the early 1980s, but was never restored or returned to operational service. Its fate is unknown after the Center for Nuclear Studies closed.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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