People

Each spring, newly elected leaders prepare to step into their roles at the American Nuclear Society. During this year’s election cycle, ANS members voted for the newest vice president/president-elect and five board of director positions (four U.S., one non-U.S.). About 19 percent of eligible members of the Society voted—a 2 percent dip from last year’s turnout.

The nomination period for the 2026 Nuclear News 40 Under 40 list is now open. The list aims to highlight people in the nuclear community who are making significant, early-career achievements. All nominations must be submitted online by 11:59 p.m. (CDT) on May 1, 2026.

Anna Bradford has been named the new head of the Nuclear Regulatory Commission’s Office of Nuclear Reactor Regulation. NRC Chair Ho Nieh called Bradford “a superb candidate to lead the team that oversees the safety of our nuclear reactor operating fleet. We are eager to have someone of her experience both here and abroad back at the NRC.” Her appointment will become effective in May.

Jeremy Bowen will head the newly created Office of Advanced Reactors when it launches in September, the Nuclear Regulatory Commission announced Monday.

This new office will license and oversee new and advanced reactors. In his role, Bowen will be responsible for the review of advanced reactor applications—reviews that the NRC said will be “expeditious.”

The 2026 American Nuclear Society election is now open. Members can vote for the Society’s next vice president/president-elect as well as six board members (five U.S. directors and one non-U.S. director). Completed ballots must be submitted by 12:00 p.m. (CDT) on Wednesday, April 1, 2026.

All ANS members have been emailed a unique access key from third-party election vendor ElectionBuddy. Each member can use their access key to vote once, and each vote will remain anonymous. Visit secure.electionbuddy.com/ballot to vote.

Mirion Technologies has announced three senior leadership appointments designed to support its global nuclear and medical businesses while advancing a company-wide digital and AI strategy. The leadership changes come as Mirion seeks to advance innovation and maintain strong performance in nuclear energy, radiation safety, and medical applications.

Each year, the American Nuclear Society awards the Glenn T. Seaborg Congressional Science and Engineering Fellowship to two members. Those recipients then spend a year in Washington, D.C., contributing to the federal policymaking process by working in either a U.S. senator’s or representative’s personal office or with a congressional committee.

It has been nearly six months since the 2025 Congressional Fellows provided their midterm updates on their time on the Hill. Now, as their fellowships draw to their close, Jacob Christensen and Mike Woosley are looking back on what they accomplished, what they learned, and much more.

. . . and in 2019, on his 90th birthday.

Swanson in 1951, the year of his college graduation . . .

My pre-college years were spent in a rural suburb of Tacoma, Wash. In 1947, I enrolled in Reed College, a small liberal arts school in Portland, Ore.; I majored in chemistry and graduated in 1951. While at Reed, I met and married a young lady with whom I would raise 3 children and spend the next 68 years of my life—almost all of them in Richland, Wash., where I still live.

I was fortunate to have a job each of my “college summers” that provided enough money to cover my college costs for the next year; I don’t think that is possible these days. My job was in the kitchen/dining hall of a salmon cannery in Alaska. Room and board were provided and the cannery was in an isolated location, so I could save almost every dollar of my salary.

Nieh

The Nuclear Regulatory Commission is now back up to four commissioners. Following a 66–32 confirmation vote in the U.S. Senate last month, Ho Nieh was officially sworn in last week.

He fills the seat left vacant following the dismissal of Christopher Hanson and is set to serve through the remainder of a term that will expire June 30, 2029.

Quotable: “I am grateful for the opportunity to return to the NRC to work alongside such a competent and dedicated workforce," said Nieh, in the NRC’s press release announcing his being sworn in. "This agency shaped my career and my commitment to nuclear safety. It is an incredible honor to have been appointed by President Trump to serve on the Commission, and I look forward to serving alongside Chairman Wright, Commissioner Crowell, and Commissioner Marzano. I am energized by the opportunities the NRC has to enable the safe use of nuclear technologies for America during this pivotal period in its history.”

Candidates have officially been named to fill six ANS leadership positions with terms beginning in June 2026. Candidates for the one-year term as vice president/president-elect will succeed Mark Peters, who will in turn succeed Hash Hashemian as current ANS president.

. . . 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.

Nieh

Earlier today, the U.S. Senate officially confirmed Ho Nieh in a 66–32 vote to serve as a commissioner on the U.S. Nuclear Regulatory Commission through the remainder of a term that will expire June 30, 2029. All present Republicans, alongside 15 Democrats and one Independent, cast their votes in favor of Nieh, who was nominated by President Trump in July and fills the seat left vacant following the dismissal of former commissioner Christopher Hanson.

NRC details: The commission leading the NRC now comprises four members. Nieh joins Chair David Wright and commissioners Bradley Crowell and Matthew Marzano. One spot remains unfilled after the resignation of Annie Caputo in July. President Trump nominated Douglas Weaver earlier this month to fill Caputo’s seat.

Last year, we proudly launched the inaugural Nuclear News 40 Under 40 list to shine a spotlight on the exceptional young professionals driving the nuclear sector forward as the nuclear community faces a dramatic generational shift. We weren’t sure how a second list would go over, but once again, our members resoundingly answered the call, confirming what we already knew: The nuclear community is bursting with vision, talent, and extraordinary dedication.

One of the privileges of being president of the American Nuclear Society is awarding Presidential Citations to individuals who have demonstrated outstanding effort in some manner for the benefit of ANS or the nuclear community at large. Citations are conferred twice each year, at the Annual and Winter Meetings.

ANS President Hash Hashemian has named this season’s recipients, who will receive recognition at the upcoming 2025 Winter Conference & Expo in Washington, D.C.

Following the enthusiastic response from the nuclear community in 2024 for the inaugural NN 40 Under 40, the Nuclear News team knew we had to take up the difficult task in 2025 of turning it into an annual event—though there was plenty of uncertainty as to how the community would receive a second iteration this year. That uncertainty was unfounded, clearly, as the tight-knit nuclear community embraced the chance to celebrate its up-and-coming generation of scientists, engineers, and policy makers who are working to grow the influence of this oft-misunderstood technology.

Levinson early in his career and today.

As a member of the American Nuclear Society, I have been to many conferences. The International Conference on Probabilistic Safety Assessment and Analysis (PSA ’25), embedded in ANS Annual Meeting in Chicago in June, held special significance for me with the PSA ’25 opening plenary session recognizing the 50^th anniversary of the publication of WASH-1400, which helped define my career. Reflecting on that milestone sent me back to 1975, when I was just an undergraduate student studying nuclear engineering at Rensselaer Polytechnic Institute (RPI) in Troy, N.Y., focusing on my mechanics, fluids, and thermodynamic classes as well as my first set of nuclear engineering classes. At that time—and many times since—the question “Why nuclear engineering?” was raised.

Wald

Matt Wald, an independent energy analyst and a writer who contributes to the Breakthrough Institute and has written feature articles for Nuclear News, recently shared his nuclear perspectives in a Zoom talk with Friends of Oak Ridge National Laboratory, a nonprofit organization dedicated to fostering ORNL’s scientific goals.

Missed opportunity: Wald, a former reporter for The New York Times and a former policy analyst for the Nuclear Energy Institute, feels that the nuclear industry and community “have committed industrial sin. Nuclear suffered through a long drought, and now it sees terrific demand for its product, and it’s not ready to deliver the needed electricity.”

Hoffman

Nuclear chemist Darleane D. Hoffman, who was renowned for her research on transuranium elements that advanced the understanding of nuclear fission, died on September 4 at her home in Menlo Park, Calif. She was 98.

Iowa origins: Hoffman was born on November 8, 1926, in Terril, Ia. She attended Iowa State University, where she earned a bachelor’s degree in chemistry in 1948 and a doctorate in physical (or nuclear) chemistry in 1951. She then began working as a chemist at Oak Ridge National Laboratory.

Los Alamos research: In 1953, Hoffman began a research position at Los Alamos National Laboratory, where she conducted pioneering work on spontaneous fission. She served as the lab’s first female division leader in charge of the Chemistry and Nuclear Chemistry Division.

Nieh

The Senate Environment and Public Works Committee will hold a nomination hearing Wednesday for Ho Nieh, President Donald Trump’s nominee to serve as a commissioner at the Nuclear Regulatory Commission.

Trump nominated Nieh on July 30 to serve as NRC commissioner the remainder of a term that will expire June 30, 2029, as Nuclear NewsWire previously reported.

Nieh has been vice president of regulatory affairs at Southern Nuclear since 2021, though since June 2024 he has been at the Institute of Nuclear Power Operations as a loaned executive.

A return to the NRC: If confirmed by the Senate, Nieh would be returning to the NRC after three previous stints totaling nearly 20 years.

One constant at the American Nuclear Society’s national meetings is the recognition of exceptional individuals in the nuclear community. ANS President Hash Hashemian has named this season’s national award recipients. These awards will be presented next month at the upcoming Winter Conference and Expo in Washington, D.C. The recipients of awards from the Society’s professional divisions, alongside Presidential Citations and the Nuclear Historic Landmark Award, will be announced soon.