Interviews

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.

“I see nuclear energy as the obvious path forward, and it confuses me as to why everybody else doesn’t. That’s the primary goal with my Miss America policy platform of ‘clean energy, cleaner future.’”

Recently I sat down with Grace Stanke, the current Miss America and a student at the University of Wisconsin in nuclear engineering exploring subjects like nuclear fuel enrichment and reactor performance (as well as being a virtuoso violinist, for good measure).

This year she’s touring the country advocating for clean energy in a cleaner future and for America to reach net zero with the help of nuclear power, while correcting misconceptions and improving communication about nuclear science and encouraging young women to pursue STEM careers.

We talked just after she had finished visiting the Hanford Site while she was on her way to appear at Town Hall Seattle at the request of grassroots pronuclear group Friends of Fission Northwest. I was impressed with the depth of her knowledge and her ability to communicate difficult issues in a concise manner that didn’t require any deep background to understand. I mean, who knows the intricacies of the Waste Isolation Pilot Plant? I was tempted to ask her to run for president.

Sometimes, even with decades of research and testing, a project never gets off the ground. That has been the case for U.S. nuclear thermal rockets—so far. Research began in the 1950s and peaked with a series of rigorous ground tests for NERVA—the Nuclear Engine for Rocket Vehicle Applications—before the program was canceled in 1973. Five decades on, this technology has yet to make it to the launchpad. But while mission priorities shift, the physics is solid: Fission-powered nuclear thermal rockets (NTRs) still offer two to five times greater efficiency than conventional rockets.

Askin Guler Yigitoglu (yigitoglua@ornl.gov) is a reactor systems modeling and safety analysis staff member at ORNL, chair of ANS’s Nuclear Installations Safety Division, and technical program chair for the PSA 2023 conference.

Probabilistic risk assessment is a mature technology that has benefited the safety of the current fleet of light water reactors in the United States since the 1970s. Most utilities have used PRA models as part of risk-informed in-service inspection programs to identify degraded plant conditions for more than two decades. The trends indicate an increasing use of risk-informed applications to support safe and cost-effective long-term operations.

Data science and predictive analytics innovations offer the opportunity to assess, monitor, and manage risk effectively. PRA models are coupled with digital twins informed by sensors and system simulators that provide real-time risk insights. Dynamic PRA approaches were initially introduced to beyond-design-basis event models for LWRs and explicitly model time-dependent operator behavior by simulating the actual plant response. Enhancing the quantification speed and memory usage of the PRA computational tools (both dynamic and traditional) is crucial for future risk-informed efforts.

Sola Talabi

Advanced reactor risk management creates awareness, assessment, and action on issues of uncertainty to ensure safe, cost-effective, and on-schedule deployment of advanced reactors. It requires people, processes, and tools to identify and assess risks both qualitatively and quantitatively.

For safety risk, this requires characterizing how advanced reactor features such as natural convective cooling may reduce or retire risks. It also includes identifying and assessing new risks that may be introduced by advanced reactor features. Retired and reduced safety risks include certain loss-of-coolant accidents because the pumps and piping systems associated with these accident scenarios are eliminated. New safety risks that may be introduced include resuspension of fission products due to the higher containment aspect ratios that some advanced reactors have. New transportation risks may arise in the case of irradiated microreactors after service. Hence, advanced reactor risk assessments should include a mechanistic assessment of the net effect of the retired and new risks to quantitatively characterize overall plant safety. This may be achieved with probabilistic risk assessment procedures and tools.

Ezibe

The American Nuclear Society is invested in growing the nuclear community through its K-12 STEM programs like the STEM Academy and Navigating Nuclear. Craig Piercy, ANS Executive Director/Chief Executive Officer, noted that when he speaks with engineering and technology students, “Most of them chose to go into nuclear because they believe in the power of the technology to help people. So, the core question is this: How do we inspire and educate a new, larger generation of professionals? It has to start at the K-12 level.”

To further this goal, the Society has brought on Uchenna Ezibe as senior manager of STEM programs. Ezibe, who has spent his career in education or STEM program management, has a clear passion for STEM education and a natural curiosity about nuclear science and technology and is very excited to help grow ANS’s educational programs.

It has been said that the nuclear provisions in the Biden administration’s Inflation Reduction Act are strong enough to be stand-alone bills. The IRA contains various tax incentives for nuclear, to the point where it seems that few in Congress are questioning the importance of nuclear energy to the nation’s power grid and climate goals.

Meredith Angwin

When my book Shorting the Grid was published in 2020, many described it as “alarmist.” Most people in the United States took grid reliability for granted. Sure, there were always power outages during storms, but weird things like “rolling blackouts” only happened in California.

Public perception is changing, however. Part of this change is due to the major February 2021 blackout in Texas, as well as the grid emergencies during December 2022. People became aware that their own grid could have problems, and not just the usual power-line-fails-in-a-snowstorm type of problems. For example, last December, the service areas for Duke Energy and the Tennessee Valley Authority in the southeastern U.S. experienced rolling blackouts. Grid operators had to take emergency measures. The Midwest, Texas, and New England experienced near misses with grid trouble. In other words, most of the country was at risk of rolling blackouts due to one relatively short winter storm.

Paris Ortiz-Wines

“Nuclear is finding its way into real acceptance and enthusiasm, and that’s really exciting.” So said secretary of energy Jennifer Granholm at the COP27 climate conference last November.

For the past 65 years, humanity has harnessed the power of the atom. Since the grid connection of the world’s first commercial nuclear plant in 1957, nuclear has been an unsung hero in providing reliable, clean energy for generations. Nuclear is the world’s fourth-largest source of energy and the second-largest low-carbon source of energy, per Our World in Data.

And yet, it wasn’t until September of 2021, when it became increasingly clear that the world was entering an energy crisis, that nuclear found its way back into the spotlight. Five months later, with the invasion of Ukraine, countries dependent on Russian gas found themselves in a precarious and costly position.

On December 1, 2021, the Department of Energy issued a request for information (RFI) asking for public feedback on using consent-based siting to identify sites for the interim storage of spent nuclear fuel. The department received more than 220 comments in response, and on September 15, 2022, the DOE released a report summarizing and analyzing those responses. That 57-page report, Consent-Based Siting: Request for Information Comment Summary and Analysis, will be followed by an updated consent-based siting process document.

The DOE’s consent-based siting initiative is being led through the DOE’s Office of Nuclear Energy. To learn more about that initiative and the consent-based siting process, Radwaste Solutions spoke with the DOE’s Kim Petry, acting associate deputy assistant secretary, Spent Fuel and Waste Disposition; Erica Bickford, acting office director, Integrated Waste Management; and Natalia Saraeva, team lead, Consent-Based Siting.

Nick Touran

I got into nuclear engineering when I realized I could apply my passion for computers to the critical human challenge of energy. After training, I spent the past 13-plus years building automated and integrated engineering analysis tools for the efficient design/licensing of advanced nuclear reactors. Given what I’ve seen, I expect that modern high-level programming languages and data systems will continue to enable new efficiencies in analysis, configuration management, work planning, procurement, training, compliance, and execution in operations. The magnitude of potential impact laid out, for example, in Information Technology for Nuclear Power Plant Configuration Management (IAEA-TECDOC-1651) is well within reach. These impacts are identical to those promised by digital twins. Achieving these goals will require more information workers in the offices of nuclear vendors and operators to develop sophisticated skills in software engineering, database administration, statistics, and business analytics. Additionally, decision makers must be better trained to best understand and choose specialized IT systems and software.

The nuclear community is undergoing a moment of unprecedented interest and growth not seen in decades. The passage of the bipartisan Infrastructure Investment and Jobs Act and the Inflation Reduction Act are providing a multitude of new funding opportunities for the nuclear community, and not just the current fleet. A mix of technologies and reactor types are being evaluated and deployed, with Vogtle Units 3 and 4 coming on line later this year, the Advanced Reactor Demonstration Projects of X-energy and TerraPower, and NuScale’s work with Utah Associated Municipal Power Systems to build a first-of-a-kind small modular reactor, making this is an exciting time to join the nuclear workforce.

Edward Stones

At my company, Dow, we understand and embrace our responsibility to reduce global carbon emissions. With that said, the challenge to decarbonize is significant but achievable. To give you a sense of the scale required for us to decarbonize in order to make our products, we produce more than 7 GW of power and steam that fire more than 50 gas and steam turbines and boilers. Moreover, we have more than 100 furnaces at 30 major manufacturing sites worldwide.

Dow has already reduced our greenhouse gas emissions by 15 percent since 2005, and we are on track to reduce emissions another 15 percent by the end of the decade on our path to carbon neutrality by 2050. Our use of clean energy has contributed significantly to our current progress, as we are one of the top 20 users of renewable energy among global corporations, having secured more than 900 MW of renewable power. While we will continue to pursue renewable energy, there’s a limitation in the ability for renewables to support our decarbonization efforts.

Jesus Zamora

Regardless of the specific field you work in or how your daily tasks are performed, digital technology does not go unnoticed, and the environmental remediation field is no exception. Digital technology can be defined as electronic tools, services, or devices that create, store, transmit, and manage data. As technology evolves, so do the ways in which it can be incorporated into remediation activities.

Adequate incorporation of these technologies can greatly improve both workflow and productivity while enhancing the quality and maintaining the integrity of data. My team and I have been able to connect radiological instruments to computers wirelessly, collect millions of radiological measurements, track the approximate location of these measurements, save measurements automatically in a database, and access them at will.

Kathryn Huff

Deploying a fleet of advanced reactors in the 2030s means deploying high-assay low- enriched uranium (HALEU) infrastructure now.

The future fleet will need more than 40 metric tons of HALEU by 2030, according to Department of Energy projections. Getting to the 5–20 percent fissile uranium-235 content of HALEU involves either enriching natural or low-enriched uranium (LEU) or downblending high-enriched uranium (HEU).

Because downblending the limited stocks of HEU held at the DOE’s Idaho National Laboratory and Savannah River Site is a short-term option at best, the Energy Act of 2020 authorized a HALEU Availability Program to build a sustainable enrichment infrastructure by the time advanced reactors are ready for commercial deployment.

Comments on a request for information reached the DOE in February 2022, just before Russia’s invasion of Ukraine amplified global energy security concerns. While the war in Ukraine didn’t change the DOE’s plans, it “accelerated everything,” said Kathryn Huff, who leads the DOE’s Office of Nuclear Energy (DOE-NE) as assistant secretary. “Our attention is now laser-focused on this issue in a way that it wouldn’t have been in the past.”

David Edsey

This past October, the House Select Committee on the Climate Crisis held a hearing titled “Good for Business: Private Sector Perspectives on Climate Action.” The hearing reviewed perspectives on the importance of the government’s investments in climate action and how these investments would contribute to job creation and economic growth. Those testifying included the founder of a solar energy company, the head of communications and policy for a popular outdoors clothing company, a former deputy energy secretary for the Department of Energy, and an executive from an insurance company.

While the solar company founder and the communications head spoke out against nuclear energy, the former deputy energy secretary, during testimony, was in favor of it. The insurance executive, David Edsey, also talked in support of nuclear during the committee’s Q&A session after testimony.

Hurricane

In 2012, Omar Hurricane, a distinguished member of the technical staff at Lawrence Livermore National Laboratory, was asked by the laboratory director to lead a team to delve into studying the physics and engineering obstacles preventing fusion ignition at the National Ignition Facility (NIF). The team’s efforts led to a new exploratory “basecamp” strategy and the creation of several pivotal experiments that revealed some of the underlying problems with the ignition point design, while also delivering improved fusion performance and the first evidence of significant alpha particle self-heating.

Hurricane was appointed chief scientist of the Inertial Confinement Fusion Program in 2014, a position he has held ever since. He was named a Fellow of the American Physical Society’s Division of Plasma Physics in 2016 and was recently awarded the Edward Teller Medal from the American Nuclear Society for his work on inertial confinement fusion physics.

Delbert

This year’s recipient of ANS’s Darlene Schmidt Science News Award is Caroline Delbert, a contributor to the Popular Mechanics magazine and website. The Schmidt Award seeks out journalists and science writers who demonstrate keen effort to report on the work of professionals in the field of nuclear science and technology. In her writing for Popular Mechanics, Delbert regularly covers nuclear, with a focus on advanced reactor designs, fusion energy, nuclear space technology, and non-energy applications of nuclear technology and radiation. This year alone she has published dozens of articles on those topics, and thanks to Popular Mechanics’ cross-publishing across Esquire, Men’s Health, MSN, Yahoo! News, and other platforms, Delbert’s dispatches on nuclear science and technology have reached a wider audience than a nuclear energy beat reporter at a financial website or trade publication could ever reach.

Metz

A number of years ago, historian and writer Chuck Metz Jr. was at the Bush’s Visitor Center in Tennessee’s Great Smoky Mountains when he ran into former Nuclear Regulatory Commission official Harold Denton and his wife. Metz was at the visitor center, which opened in 2010 and is now a tourist hotspot, because, as he explained to the Dentons at the time, he had overseen the development of its on-site museum and had written a companion coffee-table history book.

The chance meeting turned into a friendship and a fruitful collaboration. Denton, who in 1979 was the public spokesperson for the NRC as the Three Mile Island-2 accident unfolded, had been working on his memoir, but he was stuck. He asked Metz for help with the organization and compilation of his notes. “I was about to retire,” Metz said, “but I thought that exploring the nuclear world might be an interesting change of pace.”

Denton passed away in 2017, but by then Metz had spent many hours with his fast friend and was able to complete the memoir, Three Mile Island and Beyond: Memories of a Life in Nuclear Safety, which was published recently by ANS. Metz shared some of his thoughts about Denton and the book with Nuclear News. The interview was conducted by NN’s David Strutz.