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Robert Roche-Rivera and Marcos Rolón-Acevedo are licensed professional engineers who work at the U.S. Nuclear Regulatory Commission. They are also alumni of the University of Puerto Rico–Mayagüez (UPRM) and have been sharing their knowledge and experience with students at their alma mater since last year, serving as adjunct professors in the university’s Department of Mechanical Engineering. During the 2023–2024 school year, they each taught two courses: Fundamentals of Nuclear Science and Engineering, and Nuclear Power Plant Engineering.

Regardless of how you power our grid or how you attempt to decarbonize our economy, we will need many various metals to achieve any future, or even to just continue with business as usual. Critical metals like cobalt, lithium, nickel, and neodymium are essential to a low-carbon-energy future if renewables and electric vehicles are to play a large role.¹ Even if nuclear provides 100 percent of our power, just operating the grid and electrifying most sectors will take huge amounts of critical metals like copper, notwithstanding the fact that nuclear power requires the least amount of metals and other materials of any energy source.

In May’s Nuclear News (p. 86), we reviewed Argonne National Laboratory’s comprehensive work on fast reactors in Idaho. In this article, we summarize the light water reactor work there.¹

In the early days, there were few data on the behavior of reactor materials under severe neutron bombardment. In collaboration, Oak Ridge National Laboratory and Argonne National Laboratory developed the Materials Testing Reactor (MTR) for the National Reactor Testing Station (NRTS) in Idaho. The materials tested in it over the course of 15,000 experiments were reactor fuel materials, structures, cooling systems, and shields. It operated from 1952 to 1970.

Christensen

The conversation was casual with John Christensen, president and chief executive officer of Utilities Service Alliance, as he reflected on his 17 years with the organization. Christensen will be stepping down from USA to retire at the end of the year. He will be succeeded as president and CEO/managing director by Karen Fili, most recently with Urenco USA.

USA is a nonprofit organization incorporated in 1996 to provide its utility and nonutility members a business platform to collaborate on plant performance and economic benefit initiatives. Currently, USA members include 39 nuclear reactors (and one uranium enrichment plant) that provide more than 39,650 MWe of generation. As Christensen explained, USA members get the best of both worlds: the fleet benefits by working with USA while keeping the flexibility of independent operator status. (See the sidebar below for a members list.)

A 60-year-old Wyoming industrial machinery company has joined forces with nuclear innovator BWX Technologies to build and deploy 50-megawatt microreactors in America’s heartland over the coming years to provide carbon-free heat and power for industrial users.

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.

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.

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.

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.

Greg Bowman and George Smith work for the Nuclear Regulatory Commission in implementing programs that deal with risk, whether to nuclear power plants or from nuclear materials, such as radiological sabotage and theft or diversion of materials. Bowman is the director of the NRC’s Division of Physical and Cybersecurity Policy in the Office of Nuclear Security and Incident Response. Smith is the senior project manager for security in the Source Management & Protection Branch of the Division of Materials Safety, Security, State, and Tribal Programs in the Office of Nuclear Material Safety and Safeguards.

The three initiatives Bowman and Smith discussed with Nuclear News editor-in-chief Rick Michal are the Insider Threat Program, the Cybersecurity Program, and the Domestic Safeguards Program.

Ensuring that nuclear technology is used exclusively for peaceful purposes remains a critical challenge for our society today. The global community faces several grave nuclear security threats: nations that attempt to create (such as Iran) or augment (such as Russia, China, and North Korea) their nuclear arsenals, acts of aggression that target civilian nuclear reactors (as seen with Russia in Ukraine), and the looming menace of nuclear weapons deployment (emanating from Russia). Furthermore, addressing climate change necessitates an expansion of nuclear energy for electricity generation, which brings with it the need for safeguarding and regulating the deployment of advanced reactors.

Idaho’s nuclear energy history is deep and rich. The National Reactor Testing Station (NRTS) began its history as an artillery testing range in the 1940s.¹ Following World War II, Walter Zinn, Argonne National Laboratory’s founding director and Manhattan Project Chicago Pile-1 project manager, proposed to the Atomic Energy Commission that a remote location be found for building test reactors. In 1949, he and Roger S. Warner, AEC’s director of engineering,² developed a list of potential sites from which the NRTS was selected. Over the decades, quite a few companies and AEC national laboratories built 52 experimental and test reactors at the NRTS, including 14 by Argonne.³ (For a brief AEC video on the NRTS, see youtube.com/watch?v=C458NsH08TI.)

There is a mix of good news and bad in the latest Nuclear Engineering Enrollment and Degrees Survey, 2021–2022 Data. According to this report from the Oak Ridge Institute for Science and Education (ORISE), compiled with data initially released in November 2023 and updated in February 2024, the number of doctoral degrees awarded in nuclear engineering at the end of the 2022 academic year in the United States—211 Ph.D.s—was the highest since the beginning of this survey’s data collection in 1966. However, the overall numbers of nuclear engineering degrees awarded in 2021 and 2022 were at their lowest levels in more than a decade. In addition, both undergraduate and graduate enrollment numbers were down compared with 2018 and 2019.

Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.

Kristin Hirsch

Radioactive materials are used in medical, research, and commercial facilities to treat cancer, irradiate blood, sterilize food and equipment, and build economies worldwide. In the wrong hands, however, even a small amount of radioactive material can do a great deal of harm. A radiological dispersal device (RDD), otherwise known as a “dirty bomb,” is believed to be an attractive weapon for terrorist groups due to its scale of impact—panic, physical contamination, costly remediation, and denial of access to facilities and locations.

The Department of Energy’s National Nuclear Security Administration Office of Radiological Security (ORS) enhances global security by preventing high-activity radioactive materials from being used in acts of terrorism. ORS implements its mission through three strategies: protecting radioactive sources used for vital medical, research, and commercial purposes by securing facilities that utilize radioactive isotopes; removing and disposing of disused sources; and encouraging the adoption and development of nonradioisotopic alternative technologies such as X-ray and electron beam irradiators.

This year marked the 50th anniversary of Waste Management Symposia’s Waste Management Conference, held March 10–14 in Phoenix, Ariz. The event has grown significantly since the first Waste Management Conference in 1974, which attracted about 200 attendees. This year’s conference saw a record attendance of around 3,300 people from more than 20 different countries and boasted 235 technical sessions and 89 exhibitors.

Baseload nuclear generation doesn’t get the respect it deserves, if you ask nuclear operators. But the hyperscale data centers that process our digital lives—like the one right next to the Susquehanna plant in northeastern Pennsylvania—are pushing electricity demand up. Clean, reliable capacity now looks a lot more valuable.

Craig Piercy
cpiercy@ans.org

Another year, another stellar performance by America’s nuclear plants. We’ve come to expect high capacity factors, and it’s a credit to the men and women of the profession. They’ve made routine something that was unimaginable not so long ago.

The decadal challenge for the nuclear enterprise now is to maintain this high level of operational excellence for the current fleet, while at the same time ushering in a new generation of technologies at scale. It will be a big job—but one that seems more and more likely with each passing day.

It is against this hopeful backdrop that I take the opportunity to update you on our latest steps toward making the American Nuclear Society a class-leading professional society.

Ken Petersen
president@ans.org

With all that is happening in the industry these days, the nuclear fuel supply chain is still a hot topic. The Russian assault in Ukraine continues to upend the “where” and “how” of attaining nuclear fuel—and it has also motivated U.S. legislators to act.

Two years into the Russian war with Ukraine, things are different. The Inflation Reduction Act was passed in 2022, authorizing $700 million in funding to support production of high-­assay low-enriched uranium in the United States. Meanwhile, the Department of Energy this January issued a $500 million request for proposals to stimulate new HALEU production. The Emergency National Security Supplemental Appropriations Act of 2024 includes $2.7 billion in funding for new uranium enrichment production. This funding was diverted from the Civil Nuclear Credits program and will only be released if there is a ban on importing Russian uranium into the United States—which could happen by the time this column is published, as legislation that bans Russian uranium has passed the House as of this writing and is headed for the Senate. Also being considered is legislation that would sanction Russian uranium. Alternatively, the Biden-Harris administration may choose to ban Russian uranium without legislation in order to obtain access to the $2.7 billion in funding.

The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.