The Roving Reactor traveling exhibit will be in New York City at the end of the month to present “The Microreactor Salon: Tiny Nuclear vs. the Climate Crisis.” The event is part of the extensive lineup of Climate Week NYC, which will run September 22–29 this year and includes additional events all month long.

Eielson Air Force Base in central Alaska has been the preferred location to demonstrate the benefits of microreactors to the U.S. Air Force—and by extension the Defense Department—since 2018. Now, a protracted solicitation process is nearing an end, and the Air Force and the Defense Logistics Agency Energy (DLA Energy) expect to announce a final procurement decision by the end of the summer—or about one year after Oklo Inc. announced that it had been tentatively selected to supply a microreactor under a 30-year power purchase agreement.

State regulators will study the economic and technical feasibility of adding advanced nuclear technology in Florida.

The directive was included in a sweeping energy bill, House Bill 1645, passed by the Florida Legislature and signed into law by Gov. Ron DeSantis. The Florida Public Service Commission must issue a report to the governor and legislative leaders by April 1, 2025, with findings and recommendations to support new nuclear in the state—specifically including military bases.

Aalo reported last week that it has submitted a regulatory engagement plan to the Nuclear Regulatory Commission in “a huge step forward in getting regulatory approval for our Aalo-1 reactor.”

Donalds

Byron Donalds, the Republican representative from Florida’s 19th Congressional District, is a well-known proponent of nuclear energy. In his latest op-ed, which appeared in The Floridian, Donalds describes himself as “unabashedly pronuclear” and characterizes his state as a supporter of nuclear power, with four operating reactors providing 69.3 percent of Florida’s carbon-free electricity, powering 2.3 million homes. He emphasizes, however, that “there’s so much nuclear potential yet to be realized in the Sunshine State.”

Environmental benefits: Donalds notes that nuclear energy provides “countless environmental benefits” to Floridians, as well as reliable electricity. The 1,132 acres on which the state’s St. Lucie nuclear power plant is located have mangrove swamps, beaches, marshes, and other wildlife habitats that are home to more than 180 species of animals—36 of which are endangered or threatened.

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

Last Energy, a Washington, D.C.-based microreactor developer, announced last week a partnership with the NATO Energy Security Centre of Excellence (ENSEC) to jointly research military applications for microreactor power and explore opportunities for future microreactor deployments on NATO military installations.

Nuclear energy advocates attended a White House summit today on domestic nuclear deployment and will help advise a new federal initiative to support building new grid-scale nuclear reactors.

The event showcased recent policy developments and new industry investments that have changed the playing field—for the better—for nuclear during the past few years. The White House is calling it “the largest sustained push to accelerate civil nuclear deployment in the United States in nearly five decades.”

Energy startup Last Energy took an opportunity last week to showcase a prototype of its micro-scale nuclear reactor outside a convention center in Washington, D.C.

Imagine what our world would be like today without the benefits of electric energy. Think of the inventions and technologies that never would have been. Think of a world without power grids and the electricity that makes them run. Without this power, we’d find it difficult to maintain our industrial and manufacturing bases or enable advancements in the fields of medicine, communications, and computing.

Now consider the moon, our closest celestial neighbor about which we still know so little, waiting for modern-day explorers in spacesuits to unveil its secrets. Lunar exploration and a future lunar economy require reliable, long-lasting, clean sources of power. Nuclear fission answers that call. When assessing the application of nuclear power in space, three Ps should be considered: the present, the potential, and the partnerships.

The American Nuclear Society’s Thermal Hydraulics Division is hosting a virtual event on Friday, March 15, from 12:00 to 1:30 p.m. (ET), where experts will discuss some of the most impactful work in thermal hydraulics in 2023.

The no-cost event is open to all, but registration is required. Send in your questions now.

A new report, A New Nuclear Age: How 2023 Developments Will Impact the Industry in 2024, has been released by Morgan Lewis, a global corporation that provides litigation, corporate, labor and employment, and intellectual property services. Morgan Lewis’s energy specialist attorneys, who compiled the report, reviewed recent developments in rules and guidance from the Nuclear Regulatory Commission and Department of Energy that have impacted various aspects of the nuclear energy industry. Covered areas include cybersecurity, small modular reactors, advanced reactors, sustainability, export controls, plant decommissioning, microreactors, and fusion systems. Also considered in the report are potential future developments that may further affect the nuclear industry this year.

Two teams of guest editors from Idaho National Laboratory have announced plans for special issues of Nuclear Science and Engineering, the nuclear field’s longest-running technical journal. Abdalla Abou Jaoude and Abderrafi M. Ougouag are leading the issue on Technical Challenges and Opportunities in the Development and Deployment of Microreactors, while Joseph Nielsen and Piyush Sabharwall are organizing the issue on Irradiation Experiments Supporting Advanced Nuclear Technologies.

Designs for high-tech products, and the start-ups that offer them, will always outnumber the commercial successes. Ditto: many more power plants are proposed than actually get built, no matter what the technology.

This is an axiom of free-market economies, but in early November 2023 it became painfully obvious in the advanced reactor field. NuScale Power, the only advanced reactor that has made it through the licensing gauntlet, acknowledged that the consortium of utilities that was its intended launch customer had failed to put together a feasible package.

Two teams of guest editors from Idaho National Laboratory have announced plans for special issues of the American Nuclear Society's Nuclear Science and Engineering, the nuclear community’s longest-running technical journal. Abdalla Abou Jaoude and Abderrafi M. Ougouag are leading the NSE issue Technical Challenges and Opportunities in the Development and Deployment of Microreactors, while Joseph Nielsen and Piyush Sabharwall are organizing the NSE issue Irradiation Experiments Supporting Advanced Nuclear Technologies.

Plans announced with fanfare sometimes falter in the face of competition or economics. Take NuScale Power’s plans for the Carbon Free Power Project in Idaho: The project was canceled in mid-November by NuScale and its first customer, Utah Associated Municipal Power Systems, after nearly a decade. The significance of that news depends on the observer. NuScale intends to focus on other sites and customers. Competitors may redouble efforts to tout their own designs and customer lists. Media found an opportunity to speculate about the future of advanced nuclear. And while many in the nuclear community believe the momentum in favor of new nuclear deployments is continuing—or even increasing as COP28 continues—others would caution against high hopes and point to the persistent obstacles of regulation, supply chain constraints, and financing costs.

Ultra Safe Nuclear has signed a cooperative agreement with the Manila Electric Company (Meralco)—the Philippines’ largest electric distribution utility—to study the potential deployment of one or more of the company’s high-temperature, gas-cooled microreactors in the Philippines. The agreement, signed November 15, builds on a partnership between the two companies that was announced in August.

The Nuclear Regulatory Commission’s Office of Nuclear Regulatory Research is hosting two workshops on reactor topics before the end of the year.

It’s been almost 35 years since Illinois last added a nuclear power reactor to the grid (Braidwood-2, a pressurized water reactor operated by Constellation, reached commercial operation in October 1988). And it’s been 63 years since a research reactor reached initial criticality at the University of Illinois–Urbana-Champaign (UIUC). The university’s TRIGA Mark II started up in August 1960 and was shut down in 1998. For about 25 years, UIUC—the flagship public university in a state that generates more power from nuclear energy than any other—has lacked an operating research reactor.

Askin Guler Yigitoglu (yigitoglua@ornl.gov) is a reactor systems modeling and safety analysis staff member at ORNL, chair of ANS’s Nuclear Installations Safety Division, and technical program chair for the PSA 2023 conference.

Probabilistic risk assessment is a mature technology that has benefited the safety of the current fleet of light water reactors in the United States since the 1970s. Most utilities have used PRA models as part of risk-informed in-service inspection programs to identify degraded plant conditions for more than two decades. The trends indicate an increasing use of risk-informed applications to support safe and cost-effective long-term operations.

Data science and predictive analytics innovations offer the opportunity to assess, monitor, and manage risk effectively. PRA models are coupled with digital twins informed by sensors and system simulators that provide real-time risk insights. Dynamic PRA approaches were initially introduced to beyond-design-basis event models for LWRs and explicitly model time-dependent operator behavior by simulating the actual plant response. Enhancing the quantification speed and memory usage of the PRA computational tools (both dynamic and traditional) is crucial for future risk-informed efforts.