Researchers at Idaho National Laboratory and the Massachusetts Institute of Technology have conducted a three-dimensional study of irradiated U-10Zr—uranium alloyed with 10 percent zirconium—across key radial regions, providing new insights into how the material swells, transfers heat, and interacts with the fuel cladding.

U-10Zr was extensively tested in historical sodium-cooled fast reactors and is now attracting attention for use in next-generation advanced reactors.

Dozens of elected officials in California are urging Gov. Gavin Newsom and the California Legislature to act this year to extend operations at Diablo Canyon nuclear power plant past 2030.

Fusion Upscaled Leveraged Consortia for Rapid Acceleration (FULCRA) is the new public-private partnership between Oak Ridge National Laboratory and Rutherford Energy Ventures, a fusion consultancy company headquartered in Cambridge, Mass. FULCRA intends to create shared fusion test bed infrastructure at ORNL to serve as a design and funding model for similar test facilities at other national laboratories.

Areg Danagoulian of the Department of Nuclear Science and Engineering at the Massachusetts Institute of Technology is proposing a mechanism for verifying that Earth-orbiting satellites are in compliance with the Outer Space Treaty, which prohibits the placement of nuclear weapons in space. Danagoulian’s “concept and feasibility study,” titled “Verification of the Outer Space Treaty with cosmic protons,” was published recently in the journal Nature.

Originally scheduled for shutdown in 2025, Diablo Canyon nuclear power plant was given at least a few more years of life when in 2022, California lawmakers approved an extension of operations into 2030. The Avila Beach, Calif., plant already has the OK from the Nuclear Regulatory Commission to operate into 2044 and 2045 after the two reactors’ operating licenses were renewed and extended for another 20 years, but state lawmakers still must approve any further extension beyond 2030 if the plant is to remain in operation.

. . . and today.

Weitzberg then. . .

My first exposure to nuclear engineering was in 1956–57 when I was a fourth-­year chemical engineering undergraduate at MIT. The previous summer, I worked at an oil refinery in New Jersey and our class visited a Monsanto sulfuric acid factory in Boston Harbor. I lost my enthusiasm for chemical engineering and decided to take a couple of introductory nuclear engineering courses as a senior. After a summer job at Y-­12 in Oak Ridge, I started on a nuclear engineering master’s degree program. (An Atomic Energy Commission fellowship certainly helped my decision.)

The following summer, I performed reactor physics experiments at Brookhaven with Herb Kouts, Joe Hendrie, Rudy Sher, and Henry Windsor. In January 1962, after defending my Ph.D. dissertation on measuring uranium-­238 capture in lattices of uranium rods in heavy water, I headed to Los Angeles to work on SNAP reactors for Atomics International. There, I performed critical experiments and managed their aerospace safety program.

Massachusetts Gov. Maura Healey wants to accelerate the state’s leadership in both fission and fusion, and earlier this month asked the University of Massachusetts–Lowell to develop road maps to support research, manufacturing, and deployment of advanced nuclear and fusion energy in the state to “affordably, reliably, and sustainably” meet growing electricity demand in New England.

Sukesh Aghara

In an era when affordable, clean energy is as much an economic imperative as it is an environmental one, the Commonwealth of Massachusetts has an opportunity to lead not just through legislation but through partnership—between state leadership and its world-class universities.

Massachusetts has long led on decarbonization through electric vehicle adoption, rooftop solar, and offshore wind. We have reduced energy consumption through efficiency investments. From 2022 to 2024 alone, the state’s Mass Save programs facilitated energy savings equal to the annual usage of over 852,000 homes, avoided 684,000 metric tons of carbon dioxide, and delivered $2.3 billion in customer incentives. But to meet growing demand and industrial needs, it’s time to invite universities to help craft a bolder vision—one that includes advanced nuclear technologies.

Graphite is a key component of traditional nuclear reactors—many of which are aging. Because graphite tends to swell and fail after lengthy exposure to radiation, it is essential to maintain its structural integrity over the lifetime of a plant.

Recently, a team of researchers from the Massachusetts Institute of Technology, Oak Ridge National Laboratory, and other institutions reported a new and better way to evaluate the quality of the graphite. This new procedure could allow nuclear power plant operators to predict structural failure before it happens in a more accurate and less destructive way than is currently available.

A new study, “Building Confidence in Models for Complex Barrier Systems for Radionuclides,” highlights a breakthrough in the modeling and simulation of underground nuclear waste interactions. Led by Massachusetts Institute of Technology Ph.D. student Dauren Sarsenbayev, assistant professor and ANS member Haruko Wainwright, and scientists Christophe Tournassat and Carl Steefel, the research shows how cutting-edge, high-performance computing simulations closely align with real-world experimental data from the Mont Terri underground laboratory in Switzerland. The alignment enhances confidence in the long-term safety of geological nuclear waste repositories.

Researchers with the Massachusetts Institute of Technology, working with scientists from Lawrence Berkeley National Laboratory and the University of Orléans, have modeled radionuclide behavior in deep geologic formations, offering a tool for developing a defensible safety case for the underground disposal of radioactive waste.

The Massachusetts Institute of Technology’s Plasma Science and Fusion Center (PSFC) has launched the Schmidt Laboratory for Materials in Nuclear Technologies (LMNT). Backed by a philanthropic consortium led by Eric and Wendy Schmidt, LMNT is designed to speed up the discovery and evaluation of cost-effective materials that can withstand extreme fusion conditions for extended periods.

Wright

The U.S. Senate on Monday confirmed Chris Wright, President Trump’s pick to lead the U.S. Department of Energy. The confirmation vote was 59–38. Eight Democrats, including both senators from Colorado, signed off on Wright.

Wright—a Colorado native—is founder, chief executive, and chair of the board of Liberty Energy, a Denver-based energy development company specializing in fracking. He also sits on the board of directors for Oklo, a Silicon Valley–based developer of small modular reactors.

Wright was grilled by the Senate’s committee on Energy and Natural Resources during a January 15 hearing, where he made comments in support of nuclear energy and efforts to expand domestic generation in the near future.

He also repeated an earlier stated belief that “there’s no such thing as clean energy or dirty energy.” Wright was called out during the hearing by Senate Democrats for comments he made arguing that climate change has not fueled more frequent and severe wildfires, which, the Washington Post reported, is a claim at odds with the scientific consensus.

I like to say that I ended up at Massachusetts Institute of Technology because of my father. He saw that I seemed intimidated by the prospect of going there, so he dared me, figuring I would take the bait. And I did.

I graduated with a bachelor’s and master’s in physics in 1968, and two days later I married my classmate, Mike Marcus. After a summer at Ft. Monmouth, where I studied radiation damage to semiconductors, we spent the next few years back at MIT in grad school—Mike in electrical engineering and I in nuclear engineering. It was Mike who steered me toward nuclear engineering, noting that my interest was radiation damage to materials, and the nuclear engineering department was doing more of that than the physics department.

Some 30 nuclear engineering departments at universities across the United States graduate more than 900 students every year. These young men and women are the present and future of the domestic nuclear industry as it seeks to develop and deploy advanced nuclear energy technologies, grow its footprint on the power grid, and penetrate new markets while continuing to run the existing fleet of reactors reliably and economically.

Ian Wall early in his career . . .

I graduated with a degree in mechanical engineering from Imperial College, London, in 1958. Nuclear power was viewed favorably at the time, so I took a 1-year course on the subject. I was then offered fellowships at Cambridge University and the Massachusetts Institute of Technology and thought the latter would be more interesting, so I moved to Cambridge, Mass., to study nuclear engineering. After completing my doctorate in 1964, I joined the American Nuclear Society and took a job with General Electric, then in San Jose, Calif.

In 1967, GE assigned me to explore the use of probability in reactor safety. At that time, the prevailing opinion was that the probability of a severe accident was infinitesimally small and the consequences would be catastrophic.

Crownhart

“I’ve got nuclear power on the brain this week.” So writes climate and energy reporter Casey Crownhart in a recent edition the Spark, the MIT Technology Review’s climate newsletter. In her article, Crownhart describes how, while she was conducting research on advanced nuclear energy for another article, she “went down some rabbit holes on . . . potential options for future nuclear plants” and has “reached new levels of obsession” about nuclear energy.

Nuclear primer: Crownhart’s article could serve as a primer for both basic nuclear and advanced nuclear technologies. She begins by discussing the “two absolutely essential pieces” of conventional nuclear power plants—namely, the enriched uranium fuel and the pressurized water cooling system—and explains that the cooling system “keeps the whole thing from getting too hot and causing problems.”

The Department of Energy, in conjunction with Massachusetts Institute of Technology and Texas A&M University, will conduct a biweekly webinar series aimed at providing a broad overview of nuclear waste management and disposal in the United States as well as the latest research activities. The target audience is undergraduate and graduate students in science, engineering, policy, sociotechnical, and social science programs.

Researchers at Savannah River National Laboratory (SRNL), in concert with Lawrence Berkeley National Laboratory, Massachusetts Institute of Technology, Pacific Northwest National Laboratory, and Florida International University, are leading the Advanced Long-Term Environmental Monitoring Systems (ALTEMIS) project to move groundwater cleanup from a reactive process to a proactive process, while also reducing the cost of long-term monitoring and accelerating site closure.

The Massachusetts Institute of Technology and the Clean Air Task Force are offering a three-day course “Nuclear Energy in a Low-Carbon Future: Key Facts and Issues” on August 1–3. The course is organized by MIT’s Jacopo Buongiorno, Tokyo Electric Power Company Professor in Nuclear Engineering and director of science and technology for the university’s Nuclear Reactor Laboratory.

The daily schedule runs from 9:00 a.m.–5:00 p.m. (Eastern) on the first two days and 9:00 a.m.–12:30 p.m. on the third day.

The in-person version of the course is fully booked, but slots for remote attendance are still available—at no cost. Registration is required by completing a registration form.