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Byron Nuclear Generating Station
The Byron Nuclear Generating Station is a nuclear power plant located in Ogle County, Illinois, east of the Rock River. The reactor buildings were constructed by Commonwealth Edison and house two Westinghouse pressurized water reactors, Unit 1 and Unit 2, which first began operation in September 1985 and August 1987 respectively. The plant was built for Commonwealth Edison and is currently owned and operated by its parent company, Exelon Corporation.
The plant provides electricity to northern Illinois and the city of Chicago. In 2005 it generated on average about 2,500 MWe, enough power to supply about 2 million average American homes. The station employs over 600 people, mostly from Ogle and Winnebago Counties and features two prominent 495-foot (150.9 m) cooling towers. The Byron plant has been subject to some controversy with respect to a lawsuit in 1981 with concerns over tritium contamination in groundwater. Tritium contamination at Byron and other Illinois nuclear power plants led the state of Illinois to pass legislation requiring plants to report such contamination to the state within 24 hours. Plant security was increased after the terrorist attacks on September 11, 2001.
==Surrounding population==
The Nuclear Regulatory Commission defines two emergency planning zones around nuclear power plants: a plume exposure pathway zone with a radius of , concerned primarily with exposure to, and inhalation of, airborne radioactive contamination, and an ingestion pathway zone of about , concerned primarily with ingestion of food and liquid contaminated by radioactivity.〔http://www.nrc.gov/reading-rm/doc-collections/fact-sheets/emerg-plan-prep-nuc-power-bg.html〕
The 2010 U.S. population within of Byron was 25,679, an increase of 5.9 percent in a decade, according to an analysis of U.S. Census data for msnbc.com. The 2010 U.S. population within was 1,273,771, an increase of 14.5 percent since 2000. Cities within 50 miles include Rockford (17 miles to city center).〔Bill Dedman, Nuclear neighbors: Population rises near US reactors, ''msnbc.com'', April 14, 2011 http://www.msnbc.msn.com/id/42555888/ns/us_news-life/ Accessed May 1, 2011.〕
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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