Diablo Canyon will host a commercial installation of the first on-site generative artificial intelligence deployment at a U.S. nuclear plant.

Pacific Gas & Electric is deploying Atomic Canyon’s Neutron Enterprise to assist the utility’s management of datasets associated with operations of Diablo Canyon. The software, which runs on Nvidia’s full-stack AI platform, enables intelligent document processing, computation of semantic embeddings, and generative capabilities. Its infrastructure allows nuclear facilities to process and analyze vast amounts of complex documentation with unprecedented speed and accuracy, according to the company.

Holtec International announced that it has completed the campaign to transfer Diablo Canyon’s spent nuclear to dry storage ahead of its planned schedule, paving the way for the continued operation of the central California nuclear power plant.

The Nuclear Regulatory Commission is asking for public comment on its draft supplemental environmental impact statement for Diablo Canyon’s license renewal request.

Interest in new reactor deployments and existing reactor life extensions is surging, encouraged by production and investment tax credits from the Inflation Reduction Act and led by electricity demand from tech companies. Last week alone saw Google and Amazon investing in Kairos Power’s fluoride salt–cooled reactor and X-energy’s high-temperature, gas-cooled reactor, respectively. On October 16, the DOE’s Office of Clean Energy Demonstrations issued a solicitation to award $900 million to support the initial domestic deployment of light water–cooled small modular reactor technologies.

In response to a petition filed by environmental groups earlier this year, the Nuclear Regulatory Commission will reinvestigate earthquake fault lines and the potential for seismic activity and ensuing damage at California’s Diablo Canyon nuclear power plant.

The California legislature has signaled its intent to cancel a $400 million loan payment intended to help finance a longer lifespan for the state’s last nuclear power plant, Diablo Canyon.

In budget discussions conducted last week, the California legislature rejected a $400 million budget item to help keep the state’s sole remaining nuclear plant operational.

Diablo Canyon—owned by Pacific Gas & Electric—has been the subject of much debate in California. To meet grid demands during a record hot summer in 2022, Gov. Gavin Newsom had cut a deal to give $1.4 billion to support continued operations at the 2,200-MWe nuclear facility.

A review from the Ninth Circuit Court of Appeals this week denied a challenge to the Diablo Canyon nuclear plant’s license renewal application extension granted by the federal government.

In late 2023, the Nuclear Regulatory Commission agreed to formally docket the California plant’s request to extend plant operations beyond the current license expiration dates of 2024 and 2025 for the two respective units.

The owners of the Diablo Canyon nuclear power plant plan to dredge a massive buildup of shoaled sediment from its seawater intake cove.

Pacific Gas and Electric spokesperson Suzanne Hosn said, “The dredging project in the Diablo Canyon marina will remove approximately 70,000 cubic yards of sediment to prevent circumstances that could impact the power plant’s cooling system. Dredging will take place for the first time since operations began because of a rapid increase in sediment.”

Ken Petersen
president@ans.org

There have been significant changes in the outlook for the existing U.S. nuclear fleet in the last few years. In 2021, we were looking at the early closure of units and could not even think of license extension. Since then, the combination of the U.S. government recognizing the clean-air benefits of nuclear and the impact of the war in Ukraine has resulted in a lot of positive activity on Capitol Hill for nuclear.

Several pieces of legislation have been passed in support of nuclear as law- and policymakers have recognized the important role nuclear power can play in achieving the nation’s clean-air goals. New legislation also is supporting reducing reliance on Russia for uranium enrichment by supporting the domestic production of high-assay low-enriched uranium (HALEU).

The Civil Nuclear Credit (CNC) Program, which was part of the 2021 Infrastructure Investment and Jobs Act, included $6 billion to prevent premature retirement of existing zero-carbon nuclear plants. On January 17, the Department of Energy awarded Diablo Canyon $1.1 billion from the CNC Program to support continued operations of the plant.

Three climate groups filed a motion for the immediate closure of Diablo Canyon nuclear power plant in California, saying the nuclear plant poses an “unacceptable safety risk.”

The Nuclear Regulatory Commission has scheduled two meetings in February to discuss the environmental evaluation and review process for the license renewal application of the two-unit Diablo Canyon nuclear power plant in Avila Beach, Calif.

Another calendar year has passed. Before heading too far into 2024, let’s look back at what happened in 2023 in the nuclear community. In today's post, compiled from Nuclear News and Nuclear Newswire are what we feel are the top nuclear news stories from January through March 2023.

Stay tuned for the top stories from the rest of the past year.

The Nuclear Regulatory Commission has accepted for review Pacific Gas and Electric’s formal request to extend Diablo Canyon nuclear power plant’s operating licenses for another 20 years.

The California Public Utilities Commission (CPUC) voted last Thursday to extend the life of Diablo Canyon an additional five years. The decision was the final step in the extension of the state's last remaining nuclear power plant, whose two reactors will now operate until at least 2029 and 2030, respectively, instead of closing in 2024 and 2025.

DOWNERS GROVE, ILLINOIS — Statement from 2023-24 American Nuclear Society (ANS) President Kenneth Petersen on the California Public Utilities Commission's December 14 decision to extend operations of Diablo Canyon Power Plant for an additional five years:

“The American Nuclear Society applauds the decision by the California Public Utilities Commission to extend the operations of Diablo Canyon nuclear power plant through 2030.

A California court has dismissed a lawsuit brought in April by Friends of the Earth (FOE), an inveterate enemy of nuclear power, to derail last year’s state-supported plan to keep the two-unit Diablo Canyon plant running past 2025.

Steven Arndt
president@ans.org

This will be my last column in Nuclear News as president of the American Nuclear Society. Where has the year gone? For me and for all of us in the nuclear community it has been an exciting and productive 12 months. We have cheered the decision to extend Diablo Canyon operations, witnessed fuel loading and—hopefully by the time the June issue of NN is out—the start of commercial operations of Unit 3 at Vogtle, and seen significant strides forward in the licensing and deployment of small modular reactors. Internationally, we have watched the progress in the deployment of new units in the United Arab Emirates and other countries, as well as renewed commitment to nuclear in countries including Japan, South Korea, India, and the United Kingdom. All of this has been a result of both public and private investment in and commitment to nuclear.

Recently, the Inflation Reduction Act and other government actions in the United States have provided opportunities for increased investment in nuclear energy, including production tax credits and investment tax credits.

Officially established on November 15, 2021, with the signing of the $1.2 trillion Infrastructure Investment and Jobs Act—aka the Bipartisan Infrastructure Law, or BIL—the Department of Energy’s Civil Nuclear Credit Program was designed to give owners/operators of commercial U.S. reactors the opportunity to apply for certification and competitively bid on credits to help support the continued operation of economically troubled units. Finally, the federal government, and not just certain farsighted state governments, would recognize nuclear energy for its important grid reliability and decarbonization attributes.

Forty years ago, Nuclear News published an analysis of U.S. nuclear plant operations over the three years that followed the Three Mile Island-2 accident in 1979, scrutinizing capacity factors as a measure of how well a reactor was performing compared to its potential. The purpose: “To call attention to the units that have had the best results, and to explore the question: What have the personnel at these top units been doing right?”