Friday, January 21, 2011

21 Jan 2011, Fri, Nuclear News: U.S. Nuclear Output Falls as Duke Shuts North Carolina Reactors

Bloomberg: U.S. Nuclear Output Falls as Duke Shuts North Carolina Reactors
U.S. nuclear-power production fell 1.8 percent to its lowest level in seven weeks after Duke Energy Corp. shut both units at its McGuire plant in North Carolina, according to the Nuclear Regulatory Commission.

Production from U.S. reactors fell by 1,661 megawatts from yesterday to 93,111 megawatts, or 92 percent of capacity, the least since Nov. 30, according to a report today from the NRC and data compiled by Bloomberg. Seven of 104 power units were offline.

Duke Energy shut the McGuire 1 and 2 reactors after fish clogged an intake strainer from a pond used as a backup water source in case of an earthquake, the NRC said. The pond was treated about a year ago to kill the fish, the federal agency said. During the shutdown, unit 1 was manually tripped offline from 28 percent of capacity after a feedwater pump quit.

The reactors were operating at their full capacities of 1,100 megawatts each yesterday before the shutdown began at 11 a.m. local time. The plant is located 15 miles (24 kilometers) north of Charlotte.

Exelon Corp. slowed its 619-megawatt Oyster Creek unit in New Jersey to 70 percent of capacity from full power yesterday. The plant is located 33 miles north of Atlantic City.

Scana Corp. boosted its 966-megawatt Virgil C. Summer reactor in South Carolina to 99 percent of capacity from 23 percent yesterday after planned maintenance on a reactor coolant pump that began three days ago. The plant is located near Jenkinsville, about 26 miles northwest of Columbia.

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