U.S. Nuclear Output Little Changed on Millstone Boost

U.S. nuclear output was little changed at 95 percent of capacity as Dominion Resources Inc. boosted its Millstone 2 reactor in Connecticut and Exelon Corp. slowed its Oyster Creek unit in New Jersey, the Nuclear Regulatory Commission reported.

Production from U.S. plants increased by 67 megawatts from yesterday to 96,249 megawatts, according to the report today from the NRC and data compiled by Bloomberg. Four of 104 power reactors were offline.

Dominion increased output for its 884-megawatt Millstone 2 unit to 82 percent of capacity from 54 percent yesterday. Another reactor at the site, the 1,227-megawatt Millstone 3, is at full power. The plant is located about 3 miles (5 kilometers) southwest of New London.

Exelon took the turbine offline at its 619-megawatt Oyster Creek reactor as crews replaced a faulty transformer that was installed last month, David Benson, a company spokesman, said in an e-mailed release.

The station was disconnected from the grid while the reactor reduced power to 25 percent of capacity from 50 percent yesterday, Benson said. The 41-year-old plant, one of the nation’s oldest, is operating at reduced power for several weeks during the work. It is 33 miles north of Atlantic City.

American Electric Power Co. increased output at its 1,009-megawatt Cook 1 reactor in Michigan to 65 percent of capacity from 49 percent yesterday after a feedwater pump shut because of debris in its screen.

The plant is located on the eastern shore of Lake Michigan, 26 miles northwest of South Bend, Indiana. Cook 2, a 1,060-megawatt unit at the site, is operating at full power.

Entergy Corp.’s 1,297-megawatt Grand Gulf reactor in Mississippi is back at full power after slowing to 80 percent of capacity early today to perform tests on a feedwater heater, Suzanne Anderson, a plant spokeswoman, said in a telephone interview. The plant is about 25 miles southwest of Vicksburg.

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