Research & Applications

Raven-Flint Nuclear Corp., which had a project selected by the Department of Energy for the Nuclear Energy Launch Pad, announced that its license application was docketed by the Nuclear Regulatory Commission. The company also announced that it has conducted successful tests of its processing method as it works toward developing a uranium conversion pilot plant.

Oak Ridge National Laboratory scientists have collaborated with A.J. Tuck Company to develop a new manufacturing approach for use with the hot isostatic pressing (HIP) technique. The hybrid approach combines 3D printing and electroforming to produce so-called HIP cans used to form metal parts from powder materials, aiming to simplify the production of critical reactor components.

Researchers at Argonne National Laboratory have conducted experimental tests on how particles from paved surfaces become suspended from activities such as walking, driving, and vacuuming, aiming to improve modeling of radiological and other contamination scenarios where emergency operations may kick up hazardous dust.

Holtec has announced it is advancing with component fabrication for a testing facility at Idaho National Laboratory that it will use to quantify performance margins of its SMR-300 pressurized water reactor. The facility, dubbed HI-TEST, will use test loops to replicate accident scenarios and steam generator behavior, aiming also to support future power uprating for SMR-300 units.

Just days after the Department of Transportation’s Maritime Administration (MARAD) and the Port of Corpus Christi announced a partnership to explore the development of small modular reactors in the U.S. seaport, multiple other maritime nuclear announcements were unveiled to the public, including another MARAD partnership.

A simulation from the study shows density (top) and temperature (bottom) just before the time when fusion reactions peak in an asymmetric implosion. The hottest point coincides with the densest point of fuel, illustrating the direct ignition of a dense jet of fuel driven by asymmetry. The image was recently selected for the cover of Physics of Plasmas. (Image: LLNL)

Researchers at Lawrence Livermore National Laboratory used simulations to show that inertial fusion power plants could tolerate significant low-mode asymmetries, such as those caused by laser alignment being off-center, revealing a trade-off between robustness and yield that could impact how power plants are brought on line.

Oak Ridge National Laboratory and Idaho National Laboratory have announced they will collaborate to help industry develop a process for wire arc 3D printing of industrial pressure vessels used for nuclear energy and chemical processing.

“By working with industry to demonstrate, validate, and qualify advanced manufacturing technologies, we can reduce risk, accelerate deployment, and strengthen the domestic supply chains essential to America’s energy future,” said Robert Wagner, ORNL associate laboratory director for energy science and technology.

Yesterday, Westinghouse announced it had completed zero-power criticality testing for its eVinci test reactor in partnership with Los Alamos National Laboratory and Idaho National Laboratory at the National Criticality Experiments Research Center, validating the models and core design assumptions of the technology.

The company said it plans to continue prototyping the system, aiming to provide further validation of the performance, operability, and manufacturability of the microreactor.

The National Reactor Innovation Center at Idaho National Laboratory has announced 13 project selections across 12 companies for the Nuclear Energy Launch Pad, a Department of Energy–led program that integrates reactor and fuel facility authorization, testing, and deployment support for private nuclear developers.

The Launch Pad emerged from the Reactor Pilot Program and Fuel Line Pilot Program.

According to INL, projects selected include reactor development and nuclear fuel cycle advancements, including fabrication, enrichment, and conversion technologies.

Cut-away schematic and example radiograph of the fusion fuel capsule, showing the outer spherical carbon shell and the D-T fuel “ice” layer with a gas core. For Inertia, this capsule has a diameter of about 4–5 mm. Formation of a sufficiently smooth D-T ice layer is crucial for ignition. (Image: Inertia)

Inertia Enterprises and Lawrence Livermore National Laboratory have developed a manufacturing process for the thin layer of cryogenically frozen deuterium-tritium (D-T) used in its target design, reducing production time from days to hours, according to the company.

The advance makes target fueling cheaper and reduces the amount of tritium that Inertia would need to hold at a pilot plant, which lowers material handling costs, regulatory burden, and dependence on scarce fuel inventories.

This week, the International Atomic Energy Agency announced a new coordinated research project (CRP) to improve understanding of the safety of edible insects and other novel foods and to use nuclear and related technologies to assess risks.

As established by a commercial payload agreement, a radioisotope heating unit (RHU) developed by Zeno Power will be onboard one of Firefly Aerospace’s existing Blue Ghost missions to the near side of the moon as part of NASA’s Commercial Lunar Payload Services, the companies announced yesterday.

Zeno, which has already been working on an americium-241–fueled radioisotope power system for Harmonia RPS, will provide a lightweight, compact 5-Wt Am-241 RHU that includes communications, electrical power, command and data handling, and thermal management subsystems.

Clean Core Thorium Energy announced that BWX Technologies–owned Kinectrics will conduct an independent technical review of its ANEEL (Advanced Nuclear Energy for Enriched Life) fuel qualification program.

According to CCTE, Kinectrics will review key aspects of the fuel design, manufacturing, safety, and regulatory readiness.

Using SLAC’s electron camera, researchers recorded timestamps of solid copper atoms (orange) as they melted (yellow) after being blasted with laser heat. This graphic shows how copper atoms changed over a period of several femtoseconds (millionths of a billionth of a second), notated here as fractions of a picosecond. Instead of the predicted collapse, the researchers saw a gradual melting. (Image: Greg Stewart/SLAC National Accelerator Laboratory)

The SLAC National Accelerator Laboratory has announced researchers have conducted experiments testing how copper melts under extreme conditions, such as those it might be exposed to in a fusion machine. The results, published in Nature Communications, found that a copper thin film was more resilient to melting than models had predicted, uncovering molecular dynamics that had been missing from calculations.

“These results greatly improve the simulations we use to predict which materials have the best shot at surviving the extreme conditions of future fusion reaction chambers,” said Mianzhen Mo, the SLAC staff scientist who led the research.

Researchers at Lawrence Livermore National Laboratory have measured how diamond melts under extreme pressures, resolving a long-standing discrepancy between experiment and theory. In inertial confinement fusion experiments, where a diamond capsule is used to hold fuel, this refined understanding of diamond’s phase change has the potential to triple energy gain, provided that other degradation mechanisms can be controlled.

Yesterday, Oak Ridge National Laboratory announced that the Department of Energy has committed funding to develop a fusion breeding blanket test facility at the lab in partnership with Kyoto Fusioneering, and the company announced it will be relocating its U.S. headquarters to Oak Ridge, Tenn., with support from the state of Tennessee’s Nuclear Energy Supply Chain Investment Fund.

On August 11, Elemental Nuclear announced that the Department of Energy, through Sandia National Laboratories, approved its entrance into a Strategic Partnership Project. The SPP will support the development of Elemental’s supercritical carbon dioxide (sCO₂)–based Brayton cycle generator systems.

Researchers conducted experiments in Princeton Plasma Physics Laboratory’s Lithium Tokamak Experiment-Beta (LTX-β) showing glow discharge cleaning can be used to effectively clean samples of porous tungsten—used to hold liquid lithium in fusion machine inner walls—manufactured from powder-reconstituted materials, according to a paper published in Nuclear Materials and Energy.

Tungsten is widely used for plasma-facing components in fusion machines, especially in the divertor region where materials must withstand extreme levels of power flow. According to the paper, spark plasma sintering can be used to make tungsten into spongelike samples for holding liquid lithium.

Last week, Los Alamos National Laboratory announced that its ZiaCore microreactor was brought to zero-power criticality at high temperatures in April through May of this year during four weeks of experiments on the Deimos test bed at the National Criticality Experiments Research Center (NCERC).

The Gamma-Ray Energy Tracking Array (GRETA), which is installed at the Facility for Rare Isotope Beams (FRIB) at Michigan State University, has successfully completed a commissioning and characterization run, establishing that it is ready for scientific operations.

According to Lawrence Berkeley National Laboratory, which made the announcement, the measurements that scientists make with GRETA will improve the theoretical models of the atomic nucleus that underpin research in nuclear physics, astrophysics, energy, medicine, and national security.