PALO, Iowa (AP) — A repair to a flaw in a weld on the reactor at the Duane Arnold Energy Center near Palo has been completed.

Spokeswoman for the eastern Iowa nuclear power plant, Renee Nelson, says the work was done along with other activities during this month's planned shutdown for maintenance. She says repairing the weld won't extend the planned outage, but she would not disclose when the plant will be back online.

The Gazette in Cedar Rapids reports that the plant's owner, NextEra Energy, found the flaw during recent inspections. The company says the flaw penetrated 70 percent through a pipe wall. It is being blamed on "stress corrosion."

NextEra says the kind of fault found in the reactor is not unique to Duane Arnold.

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