Associated Press cited Plant officials as saying that the water flow problem identified affecting in a turbine-driven auxiliary pump at the Millstone 2 reactor.

The station’s crews failed to fix a poorly functioning backup feedwater pump.

Theday.com quoted Plant spokesman Ken Holt as saying: "Our initial troubleshooting couldn’t identify the cause, so we took the unit off line.

Testing is underway on and the unit and will resume operations upon completion of repairs.

Located in southeast Connecticut, the Millstone power station can generate enough electricity from its two operational units to power about 500,000 homes.