Chris Wagner has more than 40 years of experience in nuclear medicine, beginning as a clinical practitioner before moving into leadership roles at companies like Mallinckrodt (now Curium) and Nordion. His knowledge of both the clinical and the manufacturing sides of nuclear medicine laid the groundwork for helping to found Eden Radioisotopes, a start-up venture that intends to make diagnostic and therapeutic raw material medical isotopes like molybdenum-99 and lutetium-177.

Lightbridge Corporation has fabricated samples of nuclear fuel materials made of an enriched uranium-zirconium alloy, matching the composition of the alloy that the company intends to use for its future commercial Lightbridge Fuel product. The fuel is designed to improve the performance, safety, and proliferation resistance of nuclear reactors, according to the company. The enriched coupon samples will now be placed into capsules for irradiation testing in Idaho National Laboratory’s Advanced Test Reactor.

The world’s first nuclear-powered merchant ship, the NS Savannah, will have a public site visit in Baltimore, Md., on Saturday, August 23.

To register for the event and find up-to-date details on the event’s address, time, and more, click here.

This year’s ANS-sponsored Nuclear Criticality Safety Division Conference (NCSD 2025) will be held at the AT&T Hotel & Conference Center in Austin, Texas, September 14–18.

To register for the event, explore the full program, and reserve your room at the host hotel, click here.

A report just released by Idaho National Laboratory reviews decades of radiation protection standards and research on the health effects of low-dose radiation and recommends that the current U.S. annual occupational dose limit of 5,000 mrem be maintained without applying ALARA—the “as low as reasonably achievable” regulatory concept first introduced in 1971—below that threshold.

Noting that epidemiological studies “have consistently failed to demonstrate statistically significant health effects at doses below 10,000 mrem delivered at low dose rates,” the report also recommends “future consideration of increasing this limit to 10,000 mrem/year with appropriate cumulative-dose constraints.”

Caputo

Commissioner Annie Caputo is resigning from the Nuclear Regulatory Commission, according to a statement sent out to staff on Tuesday morning. Her resignation comes one day after the U.S. Senate voted to reconfirm chair David Wright to the commission.

“The time has come for me to more fully focus on my family,” Caputo said in her statement, provided by NRC spokesperson Scott Burnell. “I believe the [Trump] administration’s recent executive orders and the bipartisan ADVANCE Act have given the agency a platform for change.”

Mauritius Hiller

The nuclear industry is being pushed forward by a global tailwind that includes plans for more conventional nuclear plants and an exciting trend toward developing small modular reactors. These include advanced safety features and novel reactor designs, often powered by new types of fuel.

This new technology must meet existing stringent safety and security demands and must be safe for the environment, workers, and general population. Wide acceptance of international standards, as well as standardization of designs and plant concepts, will help in the long run.

Radiation protection (RP) professionals play a key role from the very start of the design phase. There is rapid and continuous development in the field of RP. Improved computational tools enable better modeling and understanding of radiation shielding, detection, and effects. Nuclear safeguards and nuclear criticality safety are increasingly important.

Munn

Nuclear engineer and longtime ANS member Wanda Munn died on July 23 at the age of 93. Described as a “trailblazer for women [and] an outspoken advocate for the peaceful use of nuclear technology” in her Tri-City (Wash.) Herald obituary, Munn followed a unique path to her nuclear engineering career. She did not get her degree until she was 46, and she subsequently spent 18 years working on systems design, construction, and operation of the Fast Flux Test Facility (FFTF) reactor for Westinghouse at the Hanford nuclear site in eastern Washington state.

Nontraditional student: Munn was born in 1931. She graduated high school early, at age 16, and started to pursue a medical degree. However, those plans changed when she married at age 18. By her early 40s, she was divorced and working as a secretary in a university nuclear engineering department when she decided to return to school to get a nuclear engineering degree.

The American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) has held another presentation in its monthly Community of Practice (CoP) series. Former RP3C chair N. Prasad Kadambi opened the June 27 meeting with brief introductory remarks about the RP3C and the need for new approaches to nuclear design that go beyond conventional and deterministic methods. He then welcomed this month’s speaker: Tim Sande, a senior manager responsible for probabilistic risk assessments (PRA) and risk-informed engineering at Enercon, who presented “A Risk-Informed Framework for Managing Nuclear Facility Security Risks.”

Watch the full webinar here.

The Nuclear Regulatory Commission has made three recent announcements regarding new developments in the nuclear energy industry: