Georgia Power’s Vogtle-4, located near Waynesboro, Ga., reached initial criticality this week, hitting a major milestone in the start-up of the reactor.

The company announced the news on February 14. Initial criticality demonstrates that operators have safely started the nuclear reactor, or, in other words, the fission reaction within the unit is now self-sustaining and the nuclear reactor is ready to produce heat.

Today’s U.S. commercial nuclear power plants are fueled with uranium dioxide pressed into cylindrical ceramic pellets—and have been for decades. These pellets are stacked inside long fuel rods made of a zirconium alloy cladding. Innovation in nuclear fuel, however, can improve safety, reduce operating costs, and further enable the development of a new generation of non-light-water reactors.

Workers in nuclear must be free to report potential problems without fear of retaliation. When it comes to issuing adverse actions, employers have a responsibility to ensure that protected activity rights are not infringed.

Fanning

Tom Fanning, president and chief executive officer of Southern Company, on July 10 announced via Twitter that he has tested positive for COVID-19. One of the largest U.S. utilities, Southern is the parent company of the owners and operators of the Farley, Hatch, and Vogtle nuclear power plants.

Also on July 10, the state of Georgia obliterated its record for the number of COVID-19 cases in a single day, reporting 4,484 new cases, topping the previous record by more than 1,000. Fanning lives in Atlanta.