The Joseph M. Farley nuclear plant, in Columbia, Ala.

The Nuclear Regulatory Commission has approved Southern Nuclear Operating Company’s request to increase the capacity of the two Farley reactors by approximately 1.7 percent. The company applied for the requisite operating license amendments on October 30 of last year. The NRC issued the amendments on October 9.

Located in Columbia, Ala., the Farley plant houses two three-loop Westinghouse pressurized water reactors. Unit 1 was connected to the grid in 1977, and Unit 2 came on line in 1981.

According to an NRC press release on October 21, NRC staff determined that Southern Nuclear could safely increase both reactors’ heat output, primarily through more accurate means of measuring feedwater flow. Southern Nuclear is also improving some plant systems not regulated by the NRC to more efficiently convert the increased reactor output to electricity.

Graph: EIA

Of the 10 U.S. power plants that generated the most electricity in 2019, nine were nuclear plants, a recent report from the U.S. Energy Information Administration states.

These 10 facilities produced a combined 230 million megawatt hours of electricity last year, accounting for 5.6 percent of all electricity generation in the United States, according to the report. The report also notes a shift in the makeup of the top plants over the past 10 years, from a mix of nuclear and coal-fired generators in 2010 to nearly all nuclear in 2019.

Coal’s share of U.S. electricity generation dropped from 45 percent in 2010 to 23 percent in 2019, the reports says. Stricter air emission standards and decreased cost competitiveness relative to other generators are given as the key reasons for coal’s decade of decline.

From left: Vogtle-3 and -4. Photo: Georgia Power

Southern Company subsidiary Georgia Power, primary owner of the Vogtle nuclear power plant, announced on June 23 that it is resequencing certain planned activities at Vogtle-3 and -4, the two Westinghouse AP1000 units under construction at the site near Waynesboro, Ga.

Southern Nuclear has accepted a “white” finding (one of low to moderate safety significance) and an associated violation notice from the Nuclear Regulatory Commission for a problem at the company’s Vogtle nuclear plant, near Waynesboro, Ga. Earlier this year, Southern had contested the severity of the finding, arguing to no avail that the finding be more appropriately characterized as “green” (very low safety significance).

The lead test rods for the world’s first installed accident tolerant fuel (ATF) have completed a full cycle at Unit 1 of the Hatch nuclear power plant in Baxley, Ga. Southern Nuclear Operating Company operates the two-unit plant.

During a planned spring 2020 maintenance and refueling outage at Unit 1, operators transferred a sampling of the lead test rods from the reactor to the spent fuel pool. An initial inspection of the fuel in comparison to standard zirconium rods has been completed.