Interviews

After three years in the Department of Energy, including two as assistant secretary of the Office of Nuclear Energy, Katy Huff stepped down in May to return to the world of academia as a professor at the University of Illinois–Urbana-­Champaign.

Among her many accomplishments while serving as NE-1, Huff pushed for energy security—both at home and abroad, in places like war-torn Ukraine—and for the development of additional advanced and traditional nuclear plants, the potential restart of shuttered nuclear facilities, and a better funding stream for college nuclear programs.

Bradley Williams

The United States is already off to a good start with respect to new nuclear deployment. The completion of Vogtle Units 3 and 4, the Natrium groundbreaking, and X-energy’s partnership with Dow Chemical to deploy an advanced reactor for industrial applications are all important first steps. These efforts are being complemented by the flurry of licensing activity with the Nuclear Regulatory Commission and overwhelming support in Congress and the White House. But to achieve the current administration’s goal of tripling nuclear capacity by 2050, more needs to be done.

Lynne Degitz

Public and private sectors are actively advancing research and development and concepts to realize a path to practical, clean, safe fusion energy. New fusion performance records continue to be set around the world, including at the National Ignition Facility (Lawrence Livermore National Laboratory), which demonstrated fusion ignition in 2022 and 2023.

However, significant obstacles for practical fusion remain. One challenge is to create and sustain a fusion power source. That is the mission of the international ITER project and the fundamental reason ITER is so valuable to the United States and the other ITER members (China, Europe, India, Japan, Korea, and Russia). Now under assembly in France, ITER is an experimental facility that will provide essential data and experience while also reducing risk for other fusion concepts. ITER will deliver unprecedented self-heated fusion performance, including fusion gain of up to 10 times greater power out of the plasma than the power into the plasma, fusion power of up to 500 megawatts, and long durations of hundreds to thousands of seconds.

. . . and today.

Fritsch in 1969 . . .

We welcome ANS members who have careered in the community to submit their own Nuclear Legacy stories, so that the personal history of nuclear power can be captured. For information on submitting your stories, contact nucnews@ans.org.

It was a summer day in 1956 in Berkeley, Calif., when I, a freshly minted Ph.D., left Lawrence Livermore National Laboratory to travel to Pittsburgh, Pa., to join Westinghouse’s Commercial Atomic Power (CAPA) program. We were going to develop a large homogeneous power reactor—the future of energy. A year later, my efforts were diverted to lead what may have been one of the first nuclear safeguards equipment development programs funded by the Atomic Energy Commission.

José Reyes

Innovations with small modular reactors, which offer a compact, efficient alternative to traditional baseload power plants, are at the forefront of a new era of nuclear energy production that can reshape how we approach industrial decarbonization.

As global energy transition efforts progress, it is essential to examine the potential these advancements hold for reducing carbon emissions. Nuclear energy has long been recognized for its ability to generate vast amounts of electricity without emitting greenhouse gases. The introduction of SMR technology represents a pivotal shift, addressing many previous challenges to nuclear deployment and opening new pathways for the integration of nuclear energy into industrial sectors.

The innovative yet simple design of NuScale’s SMR technology provides a cost-competitive, safe, and scalable solution for a wide range of energy needs.

. . . and today.

Halil Avci in 1975 . . .

We welcome ANS members who have careered in the community to submit their own Nuclear Legacy stories, so that the personal history of nuclear power can be captured. For information on submitting your stories, contact nucnews@ans.org.

For me, going into nuclear engineering was an adventure. In 1968, as a 17-year-old in a small village in western Turkey, I took a government exam designed to select students to send abroad for college. I had to pick a major and a country before the exam, so I picked nuclear engineering and America because they both seemed exciting and full of potential. I came to the United States with the intent to obtain my bachelor’s degree and return to Turkey without delay, because I was told that I was needed to work on the construction of Turkey’s first nuclear power plant starting in 1974. That nuclear plant project did not materialize as planned, nor did I return to Turkey as expected.

Shikha Prasad

High-assay low-enriched uranium (HALEU) has emerged as a popular fuel choice for advanced small modular reactors due to its long power production periods before refueling. It is currently being pursued by TerraPower, X-energy, BWX Technologies, Kairos, Oklo, and other reactor companies. HALEU has a uranium-235 enrichment ranging from 5 percent to 20 percent, whereas traditional LWRs use low-enriched uranium fuel enriched up to 5 percent.

HALEU will provide power for longer durations, compared with traditional LWRs. But could it also provide an opportunity for more rapid proliferation, as is speculated in a 2023 National Academy of Sciences report on advanced nuclear reactors (nap.nationalacademies.org/catalog/26630/)?

If a nuclear proliferator conspires to divert fresh nuclear fuel for weapons production when it has not been used in a reactor, the effort required in separative work units (SWUs) to enrich U-235 from 5 percent to 90 percent and that required to enrich from 20 percent to 90 percent are both very small, compared with the effort required to enrich U-235 from its natural abundance to the initial 5 percent.

Sean Doherty

The most important thing the nuclear community can do to support space nuclear applications is the same thing we must focus on for terrestrial nuclear science: developing the trust of the American public.

Americans are widely supportive of NASA, and space has long captivated our imaginations. Recently, the publicity surrounding the new U.S. Space Force and the popularity of commercial rocket launches have drawn the public eye skyward. We don’t need to convince people that space is important and exciting, but we do have a long way to go in promoting nuclear power to the public.

Jeremy Whitlock

I can’t think of a more exciting time to be working in nuclear, with the diversity of advanced reactor development and increasing global support for nuclear in sustainable energy planning. But we can’t lose sight of the need to plan for efficient international safeguards at the same time.

Global nuclear deployment has been underpinned since 1970 by the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), making it a key customer requirement for governments to demonstrate unequivocally that the technology is not being misused for weapons development.

The International Atomic Energy Agency (IAEA) has helped verify this commitment for more than 50 years, but it has never safeguarded many of the advanced reactors (and related fuel cycle processes) being developed today.

The continent of Africa and the 54 countries that share the land are an emerging force that will hold growing influence in the world’s economy by the end of this century. Throughout history, the world’s leading economies have been driven by large working-age populations, but the shift in demographics over the next 50 years will bring drastic changes to the global economy. As reported last year by the New York Times, most of the youngest countries in the world are in Africa (south/southeastern Asia and the Middle East being the other regions with young populations). This means that by 2050 and beyond, the countries with the largest working-age populations will be very different from the top economies today. The African Union understands these changes are coming and is working toward its Agenda 2063, the “master plan for transforming Africa into a global powerhouse of the future.”

Irina Popova

Particle accelerators have evolved from exotic machines probing hadron interactions to understand the fundamentals of our world to widely used instruments in research and for medical and industrial use. For research purposes, high-power machines are employed, often producing secondary particle beams through primary beam interaction with a target material involving many meters of shielding. The charged beam interacts with the surrounding structures, producing both prompt radiation and secondary radiation from activated materials. After beam termination, some parts of the facility remain radioactive and potentially can become radiation hazards over time. Radiation protection for accelerator facilities involves a range of actions for operation within safe boundaries (an accelerator safety envelope). Each facility establishes fundamental safety principles, requirements, and measures to control radiation exposure to people and the release of radioactive material in the environment.

Newhauser

Wayne Newhauser is a professor and the Charles M. Smith Chair of Medical Physics at Louisiana State University. Newhauser and Georgia Tech’s Shaheen Dewji—both longtime American Nuclear Society members—worked on a multiyear study that looked at workforce issues for six of the most important radiation professions.

An article authored by Newhauser and Dewji that looks in-depth at the study will be published at a later date in Nuclear News.

Newhauser sat down with NN editor-in-chief Rick Michal to talk about the study and its findings, published last year in the Journal of Applied Clinical Medical Physics.

Dennis Henneke

The BWRX-300 is the 10th generation of boiling water reactor designed by GE Hitachi and has a number of evolutionary features. We learned from the design of the Economic Simplified Boiling Water Reactor (ESBWR), the BWRX-300’s predecessor, that implementation of a plant design that utilizes passive safety features can result in a relatively large containment. From the inception of the BWRX-300, our goal was simplification of the design and the reduction in overall size of the “safety footprint,” which includes both containment and the safety-related--component plant areas. The design team was empowered to consider any and all simplification efforts, which were evaluated by the GEH team. One key to implementing this goal—design of a plant that can be licensed anywhere in the world—is the use of a probabilistic risk assessment (PRA) that helps ensure the resulting plant risk is low.

Hussein Khalil

Within the next decade, it is expected that the first round of advanced reactor (AR) demonstration units will be successfully started up and operated, with additional industry-led nuclear energy initiatives progressing toward demonstration. These AR prototypes will be first-of-a-kind systems incorporating significant technological advances. Attracting the required investment for construction and operation will require persistent efforts to improve performance, reduce costs, attract an investor/-customer base, and establish the supply chain and workforce needed to meet this emerging demand.

Public-private partnerships focused on technology and design advancements will likely be needed through at least 2050. These partnerships will require the research community—and the national labs in particular—to play a key role in developing technical solutions for economically competitive systems and helping address other challenges to sustained and expanded use of nuclear energy. These challenges include managing used nuclear fuel, minimizing nuclear security and proliferation risks, and pursuing international markets.

Patrick O’Brien

As someone who grew up in a community with an operating nuclear plant—Pilgrim Nuclear Power Station, in Plymouth, Mass., on Cape Cod Bay—I had the luxury of a more thorough education on what nuclear power was (and what it wasn’t) from an early age. Unfortunately, growing up in the 1980s and ’90s, many of my contemporaries were not as lucky; their education on nuclear power came from The Simpsons.

While it is a show that influenced a generation in many ways, its portrayal of the nuclear industry had no basis in reality. Nuclear workers are among the most professional and highly trained people in the world. The standards by which used fuel and waste are handled and stored are some of the strictest of any industry. I have found, after nearly a decade in the nuclear industry, that the first thing I must help the public, media, and even elected officials understand is that used nuclear fuel is not green goo in a barrel, but a solid pellet stored safely in robust dry storage casks. Providing the facts—the science and technology—is the key to helping people understand a complex industry. Doing so in simple terms can help demystify nuclear power.

Hanson

The U.S. Nuclear Regulatory Commission is in a difficult position. The commission must manage competing pressures from those who think it overburdens the nuclear industry and needs to move more quickly to respond to the changing regulatory landscape, and from those who think it is too cozy with the industry it’s tasked with regulating. This is a common theme all regulators face, and was one theme of the discussion with the NRC chair, Christopher Hanson.

Hanson was designated chair of the NRC in January 2021 by President Joe Biden and has since wrestled with this dilemma as the person responsible for conducting the administrative, organizational, long-range planning, and budgetary functions of the agency.

Doug Barber

Xcel Energy was the first utility to commit to carbon-free operations by 2050, with an 80 percent reduction by 2030. To achieve this important goal, we recognized that we would have to think and act in innovative ways. This mindset is highlighted in our approach to plant maintenance. In 2019, Xcel created a unique unified learning organization. This approach has leveraged nuclear and nonnuclear expertise and training resources to improve craft skills, address long-term equipment reliability vulnerabilities, implement strategic initiatives, and improve sharing of resources—all of which has improved plant performance.

Xcel Energy’s unique approach has been proven successful in back-to-back Institute of Nuclear Power Operations Maintenance and Technical Training renewals at each of its plants with strengths directly attributed to our unified enterprise and nuclear learning approach, which ensures a focus on nuclear excellence, technician effectiveness, and business efficiency.

Jessica Woynerowski

As a student, I had the opportunity to tour Urenco USA in Eunice, N.M.—the only commercially operated uranium enrichment facility in the United States. Seeing a fuel cycle facility for the first time and learning about the centrifugal technology used to separate U-235 from U-238 was enriching (pun intended). In the nuclear utility sector, where I am currently working as a core design engineer, the focus is on creating safe, reliable, carbon-free nuclear energy; too often, however, we miss out on other key players in the nuclear fuel cycle.

As a visiting student, I listened to the introductions, the tour guides, the operators, and the engineers at Urenco, and I was hooked. It was so different from what I learned in college about commercial reactors. I was so fascinated with how Urenco operated and their role in the nuclear industry that I started my career there in 2016. The company did an incredible job educating their personnel not only on their processes but also on the work of other fuel cycle facilities (mining, conversion, and fabrication, to name a few).

Wagner

Rufner

Advanced manufacturing is more than just additive manufacturing, as Jorgen Rufner and Adrian Wagner—both group leads at Idaho National Laboratory—would be quick to point out. Researchers at INL have been working with additive manufacturing (that’s 3D printing, colloquially) for decades. These days, INL boasts the largest industrial-scale electric field -assisted sintering (EFAS) machine of its kind and four other EFAS systems, including one coupled with a glove box for work with radioactive materials. That equipment and more can make samples, fuels, and components for both light water reactors and advanced reactors and for both publicly and privately funded programs.

John Mobley IV

With the release of the U.S. Department of Energy’s Pathways to Commercial Liftoff: Advanced Nuclear report this past March, there have been considerable discussions as to the multifaceted roles and responsibilities of universities in this epoch of renewed interest in nuclear energy. In particular, the imperative of securing an estimated 375,000 additional individuals for the construction and operation of 200 gigawatts of advanced nuclear reactors by 2050 is a significant endeavor that is front of mind for educational practitioners and policymakers. An understanding that the challenges in meeting the projected workforce needs of the nuclear community rely on dynamic, responsive, and innovative solutions thus is contingent on enhanced recruitment, retention, and development. To this point, a threefold approach of (1) IDEA (inclusion, diversity, equity, accessibility) initiatives, (2) AGI (academia-government-industry) partnerships, and (3) gap analysis offers a promising avenue for addressing these issues.