Aurora’s docketing marks dawn for advanced reactor licensingNuclear NewsPower & OperationsJune 16, 2020, 12:33PM|Nuclear News StaffArtist’s conception of Oklo’s Aurora. (Image: Gensler)Oklo's 1.5-MWe fast spectrum design known as Aurora is the first advanced non–light-water reactor to be accepted for a licensing review by the Nuclear Regulatory Commission. Both the reactor’s design and the anticipated licensing process mark a major departure from large light-water reactor design and licensing.NRC engagement: Oklo on June 15 heralded the NRC’s acceptance of its combined license application (COLA) to construct and operate a full-scale demonstration reactor at Idaho National Laboratory, announcing “a breakthrough in the commercialization of carbon-free advanced fission technologies.”The NRC also issued a press release the same day, stating that the agency is focused on aligning key design and safety aspects of its review early in the process to provide a predictable and efficient licensing schedule. The NRC and Oklo have engaged in preapplication discussions since 2016.Big plans, small reactor: Oklo has plans to deploy and operate Aurora in remote or off-grid locations for 20 years of power generation without refueling. The Aurora design would use heat pipes to transport heat from the reactor core to a supercritical carbon dioxide power conversion system to generate electricity.Driving innovation: Jacob DeWitte, Oklo’s chief executive officer and cofounder, said, “Advanced reactors are an important tool for climate change, and we are proud to be the first to submit a full license application and the first to have it accepted. As a startup, Oklo is persistently driving innovation by doing things differently. We are setting a different paradigm by challenging the current system, while getting feedback, iterating, and ultimately getting approval on things that traditionally have not been done before.”One step at a time: Oklo’s COLA was submitted to the NRC on March 11. At the time, Oklo used its social media assets to share a link to its publicly available application content.Oklo was selected by INL in February this year to use high-assay low-enriched uranium sourced from the Experimental Breeder Reactor-II in the demonstration reactor. The company received a site use permit for the planned demo in December 2019.Tags:advanced reactorsauroracolinlnrcokloShare:LinkedInTwitterFacebook
Fuel innovation: Powering nuclear modernizationToday’s U.S. commercial nuclear power plants are fueled with uranium dioxide pressed into cylindrical ceramic pellets—and have been for decades. These pellets are stacked inside long fuel rods made of a zirconium alloy cladding. Innovation in nuclear fuel, however, can improve safety, reduce operating costs, and further enable the development of a new generation of non-light-water reactors.Go to Article
INL’s MARVEL could demonstrate remote operation on a micro scaleThe Department of Energy launched a 14-day public review and comment period on January 11 on a draft environmental assessment for a proposal to construct the Microreactor Applications Research Validation & EvaLuation (MARVEL) project microreactor inside Idaho National Laboratory’s Transient Reactor Test (TREAT) Facility.The basics: The MARVEL design is a sodium-potassium–cooled thermal microreactor fueled by uranium zirconium hydride fuel pins using high-assay, low-enriched uranium (HALEU). It would be a 100-kWt reactor capable of generating about 20 kWe using Stirling engines over a core life of about two years.The DOE proposes to install the MARVEL microreactor in a concrete storage pit in the north high bay of the TREAT reactor building. Modifications to the building to accommodate MARVEL are anticipated to take five to seven months. Constructing, assembling, and performing preoperational testing are expected to take another two to three months prior to fuel loading.Go to Article
The year in review 2020: Waste ManagementHere is a look back at the top stories of 2020 from our Waste Management section in Newswire and Nuclear News magazine. Remember to check back to Newswire soon for more top stories from 2020.Waste Management sectionFirst-ever cleanup of uranium enrichment plant celebrated at Oak Ridge: The completion of the decades-long effort to clean up the former Oak Ridge Gaseous Diffusion Plant was celebrated on October 13, with Energy Secretary Dan Brouillette joining U.S. Sen. Lamar Alexander, U.S. Rep. Chuck Fleischmann, Tennessee Gov. Bill Lee, and other state and community leaders at the East Tennessee Technology Park, where the uranium enrichment complex once stood. Read more.Go to Article
The year in review 2020: Power and OperationsHere is a look back at the top stories of 2020 from our Power and Operations section in Newswire and Nuclear News magazine. Remember to check back to Newswire soon for more top stories from 2020.Power and Operations section Defense Department invests in three microreactor designs: Three reactor developers got a boost on March 9 when they each were awarded a contract from the U.S. Department of Defense to design a reactor that can fit inside a standard shipping container for military deployment. Read more.Go to Article
Reclassification of HLW could reduce risks while saving billions, DOE saysAn engineered stainless steel container designed to hold LLW at Hanford. Photo: Bechtel National, Inc.A Department of Energy report to the U.S. Congress shows that the reclassification of high-level radioactive waste could save more than $200 billion in treatment and disposal costs while allowing DOE sites to be cleaned up sooner—all still without jeopardizing public health and safety.The report, Evaluation of Potential Opportunities to Classify Certain Defense Nuclear Waste from Reprocessing as Other than High-Level Radioactive Waste, identifies potential opportunities for the DOE to reduce risk to public and environment while completing its cleanup mission more efficiently and effectively. Those opportunities are based on the DOE’s 2019 interpretation of the statutory term HLW, which classifies waste based on its radiological characteristics rather than its origin.Under the DOE’s interpretation of HLW, waste from the reprocessing of spent nuclear fuel may be determined to be non-HLW if the waste (1) does not exceed concentration limits for Class C low-level radioactive waste as set out in federal regulations and meets the performance objectives of a disposal facility; or (2) does not require disposal in a deep geologic repository and meets the performance objectives of a disposal facility as demonstrated through a performance assessment conducted in accordance with applicable requirements.Go to Article
Statement from the American Nuclear Society on the announced departure of NRC Chairman Kristine SvinickiOn behalf of America’s nuclear professionals, we thank Chairman Kristine Svinicki for her service and leadership at the U.S. Nuclear Regulatory Commission.Go to Article
Chairman Svinicki announces she will resign on Jan. 20Chairman Kristine Svinicki announced today that she intends to leave the Nuclear Regulatory Commission on January 20. She issued a statement in a press release from the NRC.Chairman Svinicki has served as a commissioner under three administrations and is the longest serving member of the commission. She was first appointed to the commission by President Bush in 2007, was reappointed in 2012 by President Obama, and was designated chairman by President Donald J. Trump on January 23, 2017. Her term would have ended on June 30, 2022.Go to Article
When adverse action meets protected activity: Protecting employees and employers while upholding safety cultureWorkers in nuclear must be free to report potential problems without fear of retaliation. When it comes to issuing adverse actions, employers have a responsibility to ensure that protected activity rights are not infringed.Go to Article
Advanced reactors take center stage in Popular MechanicsThe January/February 2021 issue of Popular Mechanics hit subscriber mailboxes this week with a stark cover image of a single small reactor under the headline, “Tiny nuclear reactors are about to revolutionize American energy.” The story looks at advanced reactors as a pivotal step to “redeem nuclear’s stature in American energy.”A good primer: The article does a good job introducing the casual reader to the idea that “bigger is no longer better” and that the future of nuclear power in the United States will most likely be “a combination of traditional large plants and smaller, safer megawatt reactors.”Advanced reactors, including small modular reactors, show that nuclear is no longer a one-size-fits-all operation, the article notes. The industry now “is all about personalization,” says Ken Canavan, Westinghouse’s chief technical officer, who is quoted in the article. The capacity and scalability of SMRs “is just irreplaceable,” he adds.The article explains that SMRs, microreactors, and other advanced reactor designs will be able to bring reliable, carbon-free power to small or remote locations, replacing fossil fuel power plants and supplementing the “resource-sucking downtimes left by renewables.”Go to Article
ARC-20 cost-share funds go to ARC Nuclear, General Atomics, and MITDesigns chosen for ARC-20 support could be commercialized in the mid-2030s. Graphic: DOEThe Department of Energy’s Office of Nuclear Energy (DOE-NE) has named the recipients of $20 million in Fiscal Year 2020 awards for Advanced Reactor Concepts–20 (ARC-20), the third of three programs under its Advanced Reactor Demonstration Program (ARDP). The three selected teams—from Advanced Reactor Concepts LLC, General Atomics, and the Massachusetts Institute of Technology—will share the allocated FY20 funding for ARC-20 and bring the total number of projects funded through ARDP to 10. DOE-NE announced the news on December 22.The DOE expects to invest a total of about $56 million in ARC-20 over four years, with industry partners providing at least 20 percent in matching funds. The ARDP funding opportunity announcement, issued in May 2020, included ARC-20 awards, Advanced Reactor Demonstration awards, and Risk Reduction for Future Demonstration awards.Go to Article