Power generation has many factors and key indicators to identify the “health” of a plant. Some macro-level indicators are vital to help identify challenges before they become problems; others are less sensitive yet just as important. Micro indicators such as condenser return temps or changes in pump pressures can be critical indicators of a problem that few understand, yet which results in enormous loss of efficiency. That problem is deposits on critical system tubing and piping caused by calcium carbonate or other mineral buildups. The bottom line? Scaling is a significant issue in power plants that can considerably impact efficiency and profitability.

The sixth annual World Nuclear Energy Day is being celebrated today following its inception in 2020. In recognition, here is a throwback to an Atomic Energy Commission cartoon from the early days of nuclear power:

Hash Hashemian
president@ans.org

At the time of this writing, it is only a few days before the American Nuclear Society’s 2025 Winter Conference & Expo in Washington, D.C., which is set to be an unmissable gathering of key nuclear leaders from across the United States and the world. Over the past three weeks, I have been working doggedly to obtain nearly $500,000 in sponsorships and recruit speakers for the conference.

I am thankful for the many generous donors—such as the Tennessee Valley Authority and Constellation—who continue to enable ANS to serve its members, in part by putting on the best conferences we possibly can.

I conducted much of my fundraising and recruitment while I was traveling to represent ANS at various universities, laboratories, and conferences. As I’ve mentioned before, I am focused on developing criteria around where ANS presidents travel to ensure that our resources are spent wisely; I am working with ANS past president Gail Marcus (2001–2002) to develop those criteria now, and in the meantime, I have been judicious in deciding which invitations to accept.

The Department of Energy recently announced that General Atomics has successfully completed the conceptual design of its new helium gas–cooled fast modular reactor (FMR). This milestone moves the company one step closer to a target demonstration in the 2030s.

Here is a recap of recent industry happenings:

ADVANCED REACTOR MARKETPLACE

Agreement signed on advanced nuclear technology in space

Texas-based space technology and orbital logistics developer Space Ocean Corporation and New Mexico–­based space nuclear power systems developer Space Nuclear Power Corporation (SpaceNukes) have signed a letter of intent to explore the integration of advanced nuclear reactor technology into future space missions. Space Ocean agreed to test SpaceNukes’ 10-kilowatt microreactor aboard its ALV-N satellite and, if performance criteria are met, to use SpaceNukes as a core supplier of reactors for future Space Ocean lunar and planetary missions. The companies also agreed to examine the integration of fluid delivery systems with reactor modules, to collect operational data to support technology readiness certification, and to form a joint working group to pursue additional space infrastructure and commercial opportunities.

The Department of Energy’s Office of Environmental Management said it was insight and a questioning attitude from a project manager that led the Oak Ridge Office of Environmental Management (OREM) to accelerate the demolition of the Alpha-4 building at Oak Ridge’s Y-12 National Security Complex, helping avoid millions of dollars in costs to taxpayers.

The International Atomic Energy Agency is inviting young professionals under 35 years of age to submit essays on innovations in the nuclear fuel supply chain, covering topics from uranium exploration to the recycling of spent nuclear fuel.

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 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: Craig Benson from the University of Wisconsin–Madison, who presented “Natural Systems Approach for Closure of Uranium Mill Tailing Facilities.”

Along with several other nations, Canada has committed to net-zero emissions by 2050. Part of this plan is tripling nuclear generating capacity. As of 2025, the country has four operating nuclear generating stations with a total of 17 reactors, 16 of which are in the province of Ontario. The Independent Electricity System Operator has recommended that an additional 17,800 MWe of nuclear power be added to Ontario’s grid.

Six universities in Africa, Asia, Latin America, and the Caribbean now offer postgraduate courses in nuclear law with support from the International Atomic Energy Agency, expanding legal education in the nuclear community.

One of the executive orders issued by President Trump in November —“Launching the Genesis Mission”—focuses on a national effort to accelerate the use of AI in scientific research. The Genesis Mission EO preceded a reorganization of the Department of Energy and further tightens links between science and security under the administration’s quest for “global technology dominance in the development of artificial intelligence.”

In a recent press release, the Department of Energy announced an organizational realignment aimed at “expanding American energy production, accelerating scientific and technological leadership, and ensuring the continued safety and readiness of the nation’s nuclear weapons stockpile.”

Advanced reactor developer X-energy has announced that it has closed an oversubscribed Series D financing round of approximately $700 million. The funding proceeds are expected to be used to help continue the expansion of its supply chain and the commercial pipeline for its Xe-100 advanced small modular reactor and TRISO-X fuel, according the company.

Fusion energy for commercial use is a technology that is yet to be realized, but one company is already setting its sights on taking it from land to sea.

. . . 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.

Hideyo Hanazumi, governor of Niigata Prefecture in Japan, has approved the restart of two reactors at Kashiwazaki-Kariwa nuclear power plant. The seven-unit facility, operated by Tokyo Electric Power Company, is the largest nuclear power plant in the world. It has been shut down since the March 2011 earthquake and tsunami struck the country, severely damaging TEPCO’s Fukushima Daiichi plant.

The Department of Energy’s Portsmouth Paducah Project Office is weighing options on reprocessing approximately 9,700 tons of contaminated nickel being stored at the former Paducah Gaseous Diffusion Plant in Kentucky.

The 4th Annual Advanced Reactor Codes and Standards Collaborative (ARCSC) Workshop will take place on December 4 from 9:00 a.m. to 5:00 p.m. (EST). The event, which will be hosted at the Electric Power Research Institute’s office Washington, D.C., has a hybrid format, offering the opportunity for both in-person and virtual attendance. It’s focus is on sharing the ARCSC’s progress on developing codes and standards to support advanced reactor development and will also feature industry-focused breakout discussions, conversations with industry leaders, and more.

Click here to register for the workshop.

A recent webinar hosted by the American Nuclear Society featured leading experts in South Carolina’s nuclear sector, who discussed how the state will leverage its resources, history, and experience to become a frontrunner in new development. Hosted by ANS Executive Director/CEO Craig Piercy, it offered perspectives from the utility, commercial, and academic worlds.

Go deeper: To hear more from each panelist on the nuclear present and future of South Carolina, watch the full webinar here.

The Nuclear Regulatory Commission announced that it has received the first portion of a construction permit application from Oklo subsidiary Atomic Alchemy that requests permission to build four nonpower reactors for a radioisotope production facility at Idaho National Laboratory. The submission is now available for public inspection on the NRC website.