The American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) held another Community of Practice (CoP) on April 26. For this event, the committee welcomed Mory Diané of Oklo. RP3C chair N. Prasad Kadambi led with a brief introduction before Diané shared Oklo's risk-informed, performance-based (RIPB) approach to seismic design categorization and seismic siting characterization.

Diané, a licensing manager with Oklo, is a structural engineer with a background in civil engineering

Power generation from nuclear fission as a clean and stable source of electricity has secured the interest of policymakers and industry leaders around the globe. Last fall, the United States spearheaded a pledge at COP28 to get countries to agree to triple nuclear capacity worldwide, and recently the members of the Group of 7 (G7) nations that currently use nuclear power have reaffirmed their pledges to invest in that power source to cut carbon emissions.

As of this writing, U.S. policymakers are trying to make good on that promise by passing legislation to support nuclear power, funding the domestic fuel supply chain, and working to pass the ADVANCE Act. On top of the support from Washington, D.C., power-hungry industries like data centers and chemical engineering are looking to secure stable, carbon-free power directly from power plants.

The board of governors for the International Atomic Energy Agency censured Iran this week for its failure to cooperate with access requests and materials needed to confirm that the Middle Eastern nation is adhering to nuclear safeguard obligations.

North Carolina-based Curtiss-Wright has entered into an agreement to acquire Ultra Energy, a subsidiary of the U.K.-headquartered Ultra Electronics Holdings. Ultra Energy is a designer and manufacturer of reactor protection systems, neutron monitoring systems, radiation monitoring systems, and temperature and pressure sensors. The $200 million deal is expected to close this year in the third quarter, subject to U.K. regulatory approval.

Craig Piercy
cpiercy@ans.org

On August 23, 2011, at 1:51 p.m., I was standing next to Matt Milazzo, a former ANS Congressional Fellow, on the sidewalk of a high-traffic D.C. street. We were saying goodbye after a pleasant lunch. At that exact moment, a seismic wave from a 5.9 magnitude earthquake in Mineral, Va.—one that would be felt as far away as Canada and cause hundreds of millions of dollars in damage—rippled under my feet. Perhaps it felt too familiar, like a heavy truck passing by, or maybe the oscillation peaked just as I was turning to walk back to my office. Either way, I didn’t feel a thing. The largest East Coast earthquake in 100 years, and I missed it. Completely. It wasn’t until I saw the stunned faces of my colleagues and a few picture frames scattered on the floor of my office that I understood the gravity of the moment.

Today, as I wrap my head around the stunningly large amount of energy that will be required to support advanced data center and AI functions in the coming years, I get the same feeling—that something big and consequential has happened in my larger world and I have been slow to perceive the magnitude of it.

Xcimer Energy announced June 4 that it has raised $100 million in Series A financing for a new facility in Denver, Colo., that will host a prototype laser system with “the world’s largest nonlinear optical pulse compression system.” As a private fusion developer, Xcimer wants to “extend the proven science of inertial fusion to industrial scale” with the help of that laser system and “key technologies and innovations from multiple fields.”

The U.S. Army is asking nuclear companies to submit their proposals for microreactors that can be commissioned at military bases to provide clean, reliable power at two domestic military sites.

The bid solicitation window is short—just two weeks—but the army is asking for very high-level proposals from advanced nuclear companies who are ready to jump into action. Following the initial submission period, top contenders for the project will be invited back for pitch sessions; full contracts then will be negotiated.

The Nuclear Regulatory Commission this week announced the window is open for members of the public to request a hearing on the construction permit application for TerraPower’s Natrium nuclear power plant, which is set to be built near Kemmerer, Wyo.

Ken Petersen
president@ans.org

Big news as I write this, my last column as ANS president: Legislation has been passed that will ban the importation of uranium from Russia (though waivers can be used in certain circumstances to continue imports through 2027). This ban has been discussed since the Russian invasion of Ukraine. I am sure all U.S. utilities have followed their risk-management policies.

With two years to plan, appropriate-use waivers, and access to American Assured Fuel Supply, there should not be any disruption to domestic reactor operations. The ban will force the United States and our Western allies to be independent and stronger. Congress has helped by providing $2.72 billion to support new domestic enrichment capacity. The challenge now is for the Department of Energy to turn this into actual new capacity as quickly as possible.

A new theoretical model about stabilizing plasma in tokamak fusion reactors is described in three papers from a study that was led by research physicist Jason Parisi of Princeton Plasma Physics Laboratory. Two papers—“Kinetic-ballooning-limited pedestals in spherical tokamak plasmas” and “Stability and transport of gyrokinetic critical pedestals”—appear in the International Atomic Energy Agency journal Nuclear Fusion. The other paper—“Kinetic-ballooning-bifurcation in tokamak pedestals across shaping and aspect-ratio”—appears in Physics of Plasmas.

John Wagner

As advocates for the environment, national security, and U.S. prosperity, and as believers that the substantial global expansion of nuclear energy is essential to these interests, let’s take a moment to recognize how far we have come.

In recent years, much has changed. Public opinion polls show increasingly broad support for nuclear energy, which has bipartisan and bicameral support in Congress. The U.S. is on the cusp of achievements that could usher in a new era of nuclear energy and reestablish U.S. global leadership. The prevailing question is no longer whether we need nuclear energy, but rather, how much more nuclear power do we need, how can we enable first movers, and how quickly can we deploy new reactors.

During the 2024 International Conference on Nuclear Security (ICONS) in May, representatives from the U.S. Department of Energy and the National Nuclear Security Administration discussed U.S. nuclear security priorities, noted their achievements and those of U.S. partners, and explained how to tackle the security challenges of today and tomorrow.

Researchers at the DIII-D National Fusion Facility, the National Energy Research Scientific Computing Center (NERSC) at Lawrence Berkeley National Laboratory (LBNL), and the Energy Sciences Network (ESnet) are teaming up to make the high-performance computing (HPC) powers of NERSC available to DIII-D researchers through ESnet—a high-speed data network. Their collaboration, described in a May 29 news release, in effect boosts the computing power behind DIII-D’s diagnostic tools to make more data from fusion experiments available to researchers at DIII-D in San Diego and to the global fusion research community.

Hanson

Nuclear Regulatory Commission chair Christopher Hanson was renominated today by a Senate vote of 81–17 for a five-year term expiring June 30, 2029.

Earlier, in May, the U.S. Senate Environment and Public Works Committee voted 18–1 to advance Hanson’s renomination to the NRC. Hanson has been a commissioner since 2020 and was named chair by President Biden in January 2021.

“The American Nuclear Society commends the Senate for confirming the renomination of Christopher T. Hanson as chair of the U.S. NRC,” said American Nuclear Society Executive Director/Chief Executive Officer Craig Piercy. “We look forward to Chair Hanson’s continued leadership in ensuring the safe and efficient operation of our existing nuclear power plants and in developing a robust licensing framework for new nuclear technologies. The NRC is vital in ensuring the safe use of nuclear technology for zero-carbon energy, cancer detection and treatment, food safety, and more.”

Last Energy, a Washington, D.C.-based microreactor developer, announced last week a partnership with the NATO Energy Security Centre of Excellence (ENSEC) to jointly research military applications for microreactor power and explore opportunities for future microreactor deployments on NATO military installations.

Eight graduate students from Ukrainian universities have completed a two-year Department of Energy internship program that included a visit to Argonne National Laboratory.

The Department of Energy’s Office of Fusion Energy Sciences (FES) wants Fusion Innovation Research Engine (FIRE) collaboratives to be a bridge between FES’s basic science research programs and the growing fusion industry. A funding opportunity announcement released May 22 explains that FIRE will be a “transformative initiative aimed at creating a fusion innovation ecosystem” with virtual, centrally managed collaboratives working on “end-use inspired” fusion science and technology R&D.

As he joined with other state officials and community stakeholders at a celebration last week marking the completion of Vogtle Units 3 and 4, Georgia Gov. Brian Kemp said there’s potential for a fifth nuclear reactor at the site.

White

Robertson

The Department of Energy has selected Candice Robertson to head the department’s Office of Environmental Management as acting assistant secretary (EM-1). Robertson has over 20 years of experience in radioactive waste management and previously served as principal deputy assistant secretary and as an associate principal deputy assistant secretary for DOE-EM.

Robertson replaces William "Ike" White, who was nominated by President Biden on May 23 to serve on the Defense Nuclear Facilities Safety Board, the independent agency responsible for ensuring that DOE facilities are protective of public health and safety. White, who has held the position of EM-1 since June 2019, will continue to serve as a senior advisor while he awaits confirmation to the DNFSB.

As small modular reactor (SMR) and advanced reactor (AR) developers look to build out their supply chains, NAC International (NAC) offers these companies a wide range of products and services for the full range of their nuclear energy facilities.