The Nuclear Regulatory Commission has amended the operating licenses of the two boiling water reactors at Constellation Energy's Limerick nuclear power plant, giving the company the green light to replace the units' analog safety-related instrumentation and controls systems with a state-of-the-art digital system.

Collecting belt buckles from nearly every nuclear power plant in the U.S. wasn’t the goal for Don Hildebrant when he obtained his first one. Over time, it just turned out that way.

One day years ago, Hildebrant came across a buckle from the nuclear plant where he worked, and it seemed before he knew it, he had collected more than 250 of them—some from plants that were never even completed. “When you look at the collection, you will see an interesting story of where nuclear power has been, and how far it has come,” he said.

Any method that can enhance safety, reduce risk, and lower costs is worth a second look. When that method proves it has the potential to optimize aging management at any nuclear power plant, it’s time to spread the word.

In 2019, a small team focused on selective leaching began looking for a way to use risk insights to optimize the implementation of deterministic aging management programs (AMPs). What they started soon grew into a large team effort by Constellation, Ameren, the Electric Power Research Institute (EPRI), and the Nuclear Energy Institute (NEI), along with contractors Enercon and Jensen Hughes, to develop a generic framework and then test it in two very different pilot applications.

Constellation, formerly Exelon Generation, owner and operator of the nation’s largest nuclear reactor fleet, announced this morning the completion of its separation from Exelon Corporation and its launch as a stand-alone, publicly traded company. Headquartered in Baltimore, Md., the new company began trading today on the Nasdaq Global Select Market under the symbol “CEG.”

Exelon announced last February that it had begun the effort to separate its utility businesses from its competitive power generation and customer-facing energy businesses.

The Nuclear Regulatory Commission has approved the indirect transfer of the licenses for 23 operating and five decommissioning reactors, as well as their associated independent spent fuel storage installations, from Exelon Corporation to a new company as part of a corporate restructuring, the agency announced yesterday.

The Department of Energy is providing $50 million in a cost-sharing project with Exelon Generation to digitalize the control room at the company’s Limerick nuclear power plant, the department announced yesterday. Once implemented, the facility will house the first fully digital safety system upgrade at a U.S. nuclear power plant.

The 2021 Pennsylvania Climate Action Plan recommends 18 “strategies” for realizing Gov. Tom Wolf’s goal of an 80 percent reduction in the state’s greenhouse gas emissions (from 2005 levels) by 2050. Two of the strategies are for the electricity-generation sector: (1) maintain operation at Pennsylvania’s nuclear power plants through at least 2050, and (2) achieve a 100 percent carbon-free grid by 2050.

In addition to focusing on electric power generation, the plan includes strategies for other major carbon-emitting sectors in the fossil fuel–heavy state, including transportation, industry, agriculture, and residential and commercial buildings. For each strategy, emission reductions, costs, and benefits in jobs and economic growth are quantified and health and social benefits analyzed.

Here are some important updates to our April 10 story on COVID-19 cases at nuclear power plants:

Cases of the COVID-19 virus have been confirmed at nuclear power facilities in Pennsylvania, Georgia, and Illinois at this writing: five at the Limerick plant, one at the Susquehanna plant, one at Vogtle, and one at Quad Cities.