The FitzPatrick nuclear plant in Oswego County, NY, ended up taken offline this past weekend so crews could make repairs on a feedwater heater tube leak, said officials at the Nuclear Regulatory Commission (NRC).
The feedwater heater tube devices heat water before it pumps into the reactor. NRC officials said workers identified the leak a week ago.
NRC inspectors were on-site to observe the shutdown, and will work with plant owner, Entergy, as the company plans to return the reactor to full service.
FitzPatrick is one of two New York state nuclear plants getting stepped up oversight by federal regulators.
At the FitzPatrick plant, the number of unplanned power changes exceeded six per 7,000 hours of operation. FitzPatrick’s rolling average was 6.5.
The increased oversight at the plants includes supplemental inspections at each site to assure plant operators are addressing the concerns.
The other plant under the NRC eye is Constellation Energy Nuclear Group’s Nine Mile Point 1.
The increased oversight is a result of changes in indicators used by the NRC to assess performance at reactors.