Quad Cities Nuclear Generating Station

Quad Cities Nuclear Generating Station

Quad Cities is a two-unit nuclear power plant located near Cordova, Illinois, USA on the Mississippi River. The two General Electric boiling water reactors give the plant a total electric capacity of approximately 1,824 MW. It was named for the nearby cities of Moline, East Moline, Rock Island, and—on the Iowa side of the Mississippi—Davenport, [http://www.eia.doe.gov/cneaf/nuclear/page/at_a_glance/reactors/quadcities.html] which at the time of its construction in the early 1970s were known as the Quad Cities. (Neighboring Bettendorf, Iowa, has since been added to the ranks of the Quad Cities.)

The Quad Cities plant is owned and operated by Exelon Corporation.

BWR= Boiling Water Reactor

Extended Power Uprate

During an extended power uprate test on March 5, 2002 designed to extend the power efficiency of existing BWR reactors the Quad Cities Nuclear Generating Station unit 2 (Illinois) began to experience vibrations in a steam line. On March 29 the plant was manually shut down due to high vibrations causing leaks in the main turbine control system. Unit 2 had a restart on April 2, but vibration broke a main steam pipe drain line. The line was repaired and the restart resumed but by June 7 the main steam lines were showing unexplained aberrations. On June 18 it became obvious that the power uprate was causing damage so the power was reduced but the damage had been done. Once again the plant was taken offline for repairs on July 11. The problem was traced to a hole in the steam dryer—it was repaired and braced, then unit 2 was restarted on July 21, 2002. The steam dryer failed again on May 28, 2003 with a ¾ in x 9 ft (20 mm by 2.7 m) crack. The incident did not result in any increased probability of an accident. The NRC inspected all repairs and the extended power uprate was completed successfully. [ [http://www.nrc.gov/reading-rm/doc-collections/commission/secys/2001/secy2001-0124/2001-0124scy.html NRC: SECY-01-0124 - Power Uprate Application Reviews ] ]

References

External links

* [http://www.exeloncorp.com/ourcompanies/powergen/nuclear/quad_cities_generating_station.htm Exelon Corporation Quad Cities Plant Page]
* [http://www.nrc.gov/info-finder/reactor/quad1.html Quad Cities Unit 1 NRC Page]
* [http://www.nrc.gov/info-finder/reactor/quad2.html Quad Cities Unit 2 NRC Page]
* [http://www.eia.doe.gov/cneaf/nuclear/page/at_a_glance/reactors/quadcities.html DoE Page]
* [http://www.nukeworker.com/pictures/albums/North_America/usa/maps/Quad_Cities_IFR.jpgNukeWorker]


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