The site of the Maine Yankee nuclear power plant, which was decommissioned in 2005. As with its sister plants Yankee Rowe and Connecticut Yankee, all that remains of the site is the plant ISFSI. Without a national waste management solution, spent fuel will continue to sit at sites such as these. (Photo: Maine Yankee Atomic Power Company)
After decades of false starts, U-turns, and stasis, the United States has arrived at a de facto solution for its high-level nuclear waste: Leave it in storage where it was produced, no matter how many tens of billions of dollars it costs, what impediments it raises for nuclear expansion, or what burdens it creates for the reuse of old reactor sites.
Dumb as it sounds, this is keeping all the major players happy. And it avoids alternative pathways, each of which has problems.
March 1, 2024, 3:03PMRadwaste SolutionsEdited by Tim Gregoire. Photos courtesy of Tapani Karjanlahti/Posiva. The site of the Onkalo deep geological repository near Eurajoki in southwestern Finland with the Olkiluoto nuclear power plant in the background. In 2015, Posiva received a construction license from the Finnish government for the repository, which will be constructed to a depth of 1,300 to 1,500 feet.
The year 2024 is shaping up to be a historic one for Posiva, the waste management organization owned by Finland’s two nuclear power plant utilities, Fortum and Teollisuuden Voima. The company is looking to receive regulatory approval of its operating license for the Onkalo deep geological repository for high-level radioactive waste by the end of the year.
The SRE nuclear facility in 1958. (Photo: DOE)
In February 1957, construction was completed on the Sodium Reactor Experiment (SRE), a sodium-cooled, graphite-moderated reactor with an output of 20 MWt. The design of theSRE had begun three years earlier in 1954, and construction started in April 1955. On April 25, 1957, the reactor reached criticality, and the SRE operated until February 1964.
Researchers have been working frantically to develop an array of materials and fibers to economically extract uranium from seawater—and they have succeeded. PNNL scientists exposed this special uranium-sorbing fiber developed at ORNL to Pseudomonas fluorescens and used the Advanced Photon Source at Argonne National Laboratory to create a 3-D X-ray microtomograph to determine microstructure and the effects of interactions with organisms and seawater. (Image: PNNL)
America, Japan, and China are racing to be the first nation to make nuclear energy completely renewable. The hurdle is making it economical to extract uranium from seawater, because the amount of uranium in seawater is truly inexhaustible.
While America had been in the lead with technological breakthroughs from the Department of Energy’s Pacific Northwest and Oak Ridge National Laboratories, researchers at Northeast Normal University in China have sprung ahead. But these breakthroughs from both countries have brought the removal of uranium from seawater within economic reach. The only question is when will the source of uranium for our nuclear power plants change from mined ore to seawater extraction?
Radioisotopes target cancer, improve imaging, and have myriad other medical uses
ORNL radioisotope manufacturing coordinator Jillene Sennon-Greene places a shipment vial of actinium-225 inside the dose calibrator to confirm its activity is within customer specifications. (Photo: Carlos Jones/ORNL, DOE)
On August 2, 1946, 1 millicurie of the isotope carbon-14 left Oak Ridge National Laboratory, bound for the Barnard Free Skin and Cancer Hospital in St. Louis, Mo.
That tiny amount of the radioisotope was purchased by the hospital for use in cancer studies. And it heralded a new peacetime mission for ORNL, built just a few years earlier for the production of plutonium from uranium for the Manhattan Project.
Argonne director Paul Kearns delivers the plenary lecture on the first day of the 2023 Atoms for Humanity symposium. (Photo: Purdue NE/CHE)
The roles of nuclear energy as a clean energy source and in space exploration were highlighted at the recent Atoms for Humanity symposium, held October 25–26, 2023. The symposium, which was organized by Purdue’s Center for Intelligent Energy Systems (CiENS) and hosted by the university’s School of Nuclear Engineering, was held on the West Lafayette, Ind., campus in Eliza Fowler Hall.
A vial of Ac-225 produced by Niowave stands next to its lead shipping pig. (Photo: Niowave)
According to the Council on Radionuclides and Radiopharmaceuticals, more than 82,000 nuclear imaging procedures using nuclear medicine are performed throughout the world every day. To administer these vital medical procedures, radiopharmaceutical companies and hospitals rely on a handful of producers of medical radioisotopes.
The Carolinas-Virginia Tube Reactor site, circa 1963. (Photo: Duke Energy)
The Carolinas-Virginia Tube Reactor (CVTR), also known as Parr due to its location in Parr, S.C., was a 65-MWt (17-MWe) pressurized tube reactor. Construction began in January 1960, and the reactor reached initial criticality in March 1963. Commercial operation commenced in December 1963, and the reactor was permanently shut down in January 1967 after the test program was complete.