Connect with us

Tech

New research effort could boost nuclear fuel performance

Published

on

New research effort could boost nuclear fuel performance


Inside a hot cell, a manipulator grasps and twists the tool to puncture the metal cladding that surrounds the uranium pellets, allowing researchers to measure the amount of xenon and krypton gases released. Credit: Andrea Starr | Pacific Northwest National Laboratory

Researchers at the Department of Energy’s Pacific Northwest National Laboratory (PNNL) have begun a series of experiments that could result in more energy for the grid by increasing nuclear fuel efficiency. The tests are made possible by the special delivery of 11 “high burnup” rods that were irradiated for research purposes.

The rods will be punctured, cut, mechanically stressed and closely examined—all part of testing to learn how the metal alloys fared inside the extreme environment of a nuclear reactor for six years, where temperatures can soar to hundreds of degrees Celsius.

The larger aim: to understand how advanced fuels developed by Global Nuclear Fuel react to “higher burnup” conditions. Those conditions partly entail keeping the fuels inside a reactor for longer than is typical, with the goal of extracting more energy out of the fuel than is done today.

“To draw more energy from these materials and increase plant power is like putting new generating capacity on the grid without having to build any new infrastructure,” said Mark Nutt, director of PNNL’s nuclear energy market sector. “That’s a useful thing for both fuel vendors and a nation that seeks to realize a fuller nuclear potential.”

The series of experiments underway at PNNL will reveal important information about how the research rods reacted to the conditions, and may even inform how future fuels are designed. High burnup fuels stand to boost the performance of the country’s nuclear power fleet by making more efficient use of existing fuel materials, making reactors more resistant to nuclear incidents and perhaps even lowering the cost of electricity.

“This is a for our Accident Tolerant Fuel program,” said Frank Goldner, the Accident Tolerant Fuel federal program manager in the Office of Nuclear Energy. “The development of this fuel could further support the Trump Administration’s executive order to facilitate 5 gigawatts of power uprates at existing power plants by 2030 and high burnup fuels could be a big part of that.”







Credit: Eddie Pablo | Pacific Northwest National Laboratory

Delivered safe and sound

When the rods first arrived at the PNNL-Richland campus, many of the scientists watching the delivery wore expressions of anticipation. The shipping process was well-regulated, requiring complex logistical coordination between agencies over a span of 14 months. As an unloading crew meticulously transferred the 60,000-pound stainless-steel rod-carrying cask into the Radiochemical Processing Laboratory (RPL), a team of technicians, radiation chemists, material scientists and nuclear engineers was at the ready. Testing was to begin right away.

Almost like , signatures of past exposure imbued throughout the materials will answer important questions for curious scientists. Did the outer casing, called “cladding,” perform as expected under high burnup conditions? Researchers will search for changes in the material through “tensile testing” techniques. They’ll also use a digital image correlation method to paint the cladding with thousands of dots, then trace the movement of those dots as the cladding is pulled apart with great mechanical force to gather significantly more data.

In one test, researchers used remotely operated manipulators inside a heavily shielded hot cell to puncture the cladding, releasing the rods’ internal pressure. They then capture the radioactive gases that released, which reveal how much pressure built up inside the cladding as the rods’ internal contents underwent fission reactions. All of these data will help Global Nuclear Fuel to further validate the models that estimate how their may perform under various conditions.

“The examination of these rods is the next step in our continuous drive to develop higher efficiency fuels that are safer and more reliable,” said Craig Ranson, Installed Base CEO, GE Vernova Hitachi Nuclear Energy. “We are proud to be part of this collaboration with the U.S. Department of Energy, PNNL and our utility partners to benefit the entire industry.”

It’s exactly the kind of post-irradiation examination that PNNL is poised to do, thanks in part to the uniqueness of the RPL, a hazard category II non-reactor nuclear research facility. Equipped with precision instruments and staffed by researchers and technicians with diverse expertise, it’s rare that a single facility can perform such wide-ranging and specialized analyses for multiple sponsors.

“The RPL provides a unique opportunity where we can actually accept full-length high burnup rods, perform the research in the hot cells and take the material to different labs within the same space—without having to transfer buildings—for testing. It’s very efficient,” said PNNL chemist and project co-lead Susan Asmussen. “We have the ability to do work on materials—from post-irradiation examination to liquid-liquid separation chemistry—that few other facilities have.”

Co-lead Brady Hanson, a nuclear engineer at PNNL, concurs, also citing the research team’s breadth of experience as a key advantage.

“We can perform all the kinds of chemistry you could dream of under this roof, but we can also do mechanical and material testing here and we can quite literally get all the way down to the atomic level. There are few questions we can’t answer,” Hanson said.

“That’s a feature of both our facility and our diverse research team. We’ve got nuclear, mechanical and chemical engineers, materials scientists and a chemist. It takes all of us to look at the scope of the work from different angles and provide different viewpoints, and I think that’s what really makes us a strong team.”

PNNL also benefits from its extensive research scope and varied mission partners, as scientists from several disciplines work onsite and can collaborate on experiments to maximize the use of valuable nuclear materials for mission needs across the U.S. government. For instance, debris generated from the decladding process will be used to train the next generation of scientists tasked with developing technologies to detect and monitor nuclear activities—a key part of the U.S. National Nuclear Security Administration’s nonproliferation mission.

Through the Nonproliferation Stewardship Program, RPL staff will leverage the debris to understand how to characterize and monitor the movements of special nuclear materials, like uranium and plutonium, through a chemical separation process.

“This delivery represents a rare and valuable opportunity,” said Nutt. “We look forward to realizing the full scientific potential of this material—that’s an area where PNNL is especially capable, given our multidisciplinary strengths. The resulting research could help achieve several important goals in service to the nation and go a long way toward providing abundant and reliable energy to the grid allowing for U.S. energy dominance.”

Citation:
New research effort could boost nuclear fuel performance (2025, August 14)
retrieved 14 August 2025
from https://techxplore.com/news/2025-08-effort-boost-nuclear-fuel.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.





Source link

Tech

Asus Made a Split Keyboard for Gamers—and Spared No Expense

Published

on

Asus Made a Split Keyboard for Gamers—and Spared No Expense


The wheel on the left side has options to adjust actuation distance, rapid-trigger sensitivity, and RGB brightness. You can also adjust volume and media playback, and turn it into a scroll wheel. The LED matrix below it is designed to display adjustments to actuation distance but feels a bit awkward: Each 0.1 mm of adjustment fills its own bar, and it only uses the bottom nine bars, so the screen will roll over four times when adjusting (the top three bars, with dots next to them, illuminate to show how many times the screen has rolled over during the adjustment). The saving grace of this is that, when adjusting the actuation distance, you can press down any switch to see a visualization of how far you’re pressing it, then tweak the actuation distance to match.

Alongside all of this, the Falcata (and, by extension, the Falchion) now has an aftermarket switch option: TTC Gold magnetic switches. While this is still only two switches, it’s an improvement over the singular switch option of most Hall effect keyboards.

Split Apart

Photograph: Henri Robbins

The internal assembly of this keyboard is straightforward yet interesting. Instead of a standard tray mount, where the PCB and plate bolt directly into the bottom half of the shell, the Falcata is more comparable to a bottom-mount. The PCB screws into the plate from underneath, and the plate is screwed onto the bottom half of the case along the edges. While the difference between the two mounting methods is minimal, it does improve typing experience by eliminating the “dead zones” caused by a post in the middle of the keyboard, along with slightly isolating typing from the case (which creates fewer vibrations when typing).

The top and bottom halves can easily be split apart by removing the screws on the plate (no breakable plastic clips here!), but on the left half, four cables connect the top and bottom halves of the keyboard, all of which need to be disconnected before fully separating the two sections. Once this is done, the internal silicone sound-dampening can easily be removed. The foam dampening, however, was adhered strongly enough that removing it left chunks of foam stuck to the PCB, making it impossible to readhere without using new adhesive. This wasn’t a huge issue, since the foam could simply be placed into the keyboard, but it is still frustrating to see when most manufacturers have figured this out.



Source link

Continue Reading

Tech

These Sub-$300 Hearing Aids From Lizn Have a Painful Fit

Published

on

These Sub-0 Hearing Aids From Lizn Have a Painful Fit


Don’t call them hearing aids. They’re hearpieces, intended as a blurring of the lines between hearing aid and earbuds—or “earpieces” in the parlance of Lizn, a Danish operation.

The company was founded in 2015, and it haltingly developed its launch product through the 2010s, only to scrap it in 2020 when, according to Lizn’s history page, the hearing aid/earbud combo idea didn’t work out. But the company is seemingly nothing if not persistent, and four years later, a new Lizn was born. The revamped Hearpieces finally made it to US shores in the last couple of weeks.

Half Domes

Photograph: Chris Null

Lizn Hearpieces are the company’s only product, and their inspiration from the pro audio world is instantly palpable. Out of the box, these look nothing like any other hearing aids on the market, with a bulbous design that, while self-contained within the ear, is far from unobtrusive—particularly if you opt for the graphite or ruby red color scheme. (I received the relatively innocuous sand-hued devices.)

At 4.58 grams per bud, they’re as heavy as they look; within the in-the-ear space, few other models are more weighty, including the Kingwell Melodia and Apple AirPods Pro 3. The units come with four sets of ear tips in different sizes; the default mediums worked well for me.

The bigger issue isn’t how the tip of the device fits into your ear, though; it’s how the rest of the unit does. Lizn Hearpieces need to be delicately twisted into the ear canal so that one edge of the unit fits snugly behind the tragus, filling the concha. My ears may be tighter than others, but I found this no easy feat, as the device is so large that I really had to work at it to wedge it into place. As you might have guessed, over time, this became rather painful, especially because the unit has no hardware controls. All functions are performed by various combinations of taps on the outside of either of the Hearpieces, and the more I smacked the side of my head, the more uncomfortable things got.



Source link

Continue Reading

Tech

CEOs are taking the lead on AI initiatives | Computer Weekly

Published

on

CEOs are taking the lead on AI initiatives | Computer Weekly


The AI radar 2026 study from Boston Consulting Group (BCG) has reported that artificial intelligence (AI) investment is set to double in 2026 compared with 2025. The study, based on a survey of 2,400 business executives, of which 640 are CEOs, found that almost every chief executive polled (94%) is committed to continuing investments even if returns take time to materialise.

In fact, almost all (90%) of the CEOs polled believe AI agents will deliver a measurable return on investment (ROI) by 2026.

The study found that over two-thirds (72%) of CEOs now act as the primary decision-maker for AI in their organisation, taking responsibility from CIOs, who were previously the main lead in AI projects.

Christoph Schweizer, CEO of BCG, said: “Corporate investment in AI is here to stay. 94% of our survey respondents say they will continue to invest in 2026, even if it takes time to see the return. They intend to spend 1.7% of revenue on AI comprehensively. That is more than twice of what it was a year ago.”

BCG’s research suggests that companies leading the way in AI deployments are investing 60% of their AI budgets on agentic AI (AI agents). “We tell CEOs that they need to make AI a key priority,” he said. “The way they own it, the way they talk about it, the way they bring their organisation along. They need to spend time on deepening their own AI literacy.”

BCG recommends that CEOs understand the tools, the technology, and keep in touch with technology suppliers and partners. “Ultimately, you need to know what you talk about so that you can bring your organisation along and steer for maximum return,” added Schweizer.

With regards to the adoption of agentic AI, BCG found that more than 30% of the CEOs investing in AI during 2026 said they would be building agents to deploy in the work environment. Vladimir Lukic, global leader of BCG’s Technology and Digital Advantage, said: “AI agents will truly be something that will unlock organisations and deliver a return on investment within 2026.”

Sylvain Duranton, head of BCG X, said the research highlights differences in CEOs’ AI confidence in different regions. BCG reported that UK businesses are less likely than global peers to make large-scale investments in AI in 2026.

The study found that only 24% of UK companies plan to invest more than $50m in AI, compared with much higher shares in countries leading the AI race, such as Greater China (68%), Japan (53%), the European Union (38%) and the Middle East (41%). BCG also reported that British CEOs are the most sceptical of AI’s potential return on investment and less involved in decision-making on AI.

Discussing the regional differences, Duranton said: “CEOs in the East, in India, in China, in Japan, the Middle East and Africa tend to be highly confident that AI is going to be a positive return on investment move. In the global West – Europe, the US and the UK – there’s a bit more caution.”

In his experience, many Asian companies have huge confidence and boldness in moving forward with AI. However, many European and US firms operate in a different way. “There’s some more skepticism in their workforce,” said Duranton. “There potentially is some more regulation that they deal with.”

Firms leading the way with AI deployments, which BCG categorise as “trailblazers”, tend to focus heavily on upskilling the workforce. Jessica Apotheker, chief marketing officer and managing director at BCG, said: “Trailblazers are putting 60% of their AI budget behind upskilling and retraining their workforce. So, they’re really wanting to go deep in the organisation, changing the way people work, putting people behind this new technology.”

BCG reported that in these organisations, 70% of the workforce has been upskilled or reskilled on AI.



Source link

Continue Reading

Trending