Waste Management

A new study, “Building Confidence in Models for Complex Barrier Systems for Radionuclides,” highlights a breakthrough in the modeling and simulation of underground nuclear waste interactions. Led by Massachusetts Institute of Technology Ph.D. student Dauren Sarsenbayev, assistant professor and ANS member Haruko Wainwright, and scientists Christophe Tournassat and Carl Steefel, the research shows how cutting-edge, high-performance computing simulations closely align with real-world experimental data from the Mont Terri underground laboratory in Switzerland. The alignment enhances confidence in the long-term safety of geological nuclear waste repositories.

Members of the Defense Nuclear Facilities Safety Board (DNFSB) viewed the efforts underway to address legacy transuranic waste during a recent visit to Los Alamos National Laboratory, in New Mexico.

The Nuclear Waste Technical Review Board announced it will hold a public meeting on Wednesday, August 27, to review information on the Department of Energy’s activities to manage spent nuclear fuel and high-level radioactive waste and to receive program updates from the DOE’s Office of Nuclear Energy.

Employees at the Department of Energy’s Savannah River Site in South Carolina have demonstrated their resourcefulness and capabilities by implementing a newly created carrier to transport spent nuclear fuel, reducing the time needed to process the material for permanent disposal in coming years.

A study published by the Journal of the American Medical Association claims to have found an increased rate of cancer for people who grew up living close to Coldwater Creek near St. Louis Lambert International Airport in Missouri.

Editor's note: This article has was originally published in November 2023. It has been updated with new information as of June 2025.

Outside my office, there is a display case filled with rock samples from all over the world. It contains a disk of translucent, orange salt from the Waste Isolation Pilot Plant near Carlsbad, N.M.; a core of white-and-bronze gneiss from the site of the future deep geologic repository in Eurajoki, Finland; several angular chunks of fine-grained, gray claystone from the underground research laboratory at Bure, France; and a piece of coarse-grained granite from the underground research tunnel in Daejeon, South Korea.

The Trump administration has dismissed seven of the (formerly) eight board members of the Nuclear Waste Technical Review Board, the independent federal agency tasked with evaluating the technical and scientific validity of Department of Energy activities related to managing and disposing of high-level radioactive waste and spent nuclear fuel.

Researchers with the Massachusetts Institute of Technology, working with scientists from Lawrence Berkeley National Laboratory and the University of Orléans, have modeled radionuclide behavior in deep geologic formations, offering a tool for developing a defensible safety case for the underground disposal of radioactive waste.

Teams from the Department of Energy’s Offices of Environmental Management and Nuclear Energy recently collaborated on the Road Ready Demonstration Project by testing new equipment to seal spent nuclear fuel into a safe and transportable system for future shipments out of Idaho.

The Nuclear Regulatory Commission is considering allowing Entergy to use a portion of the decommissioning trust fund (DTF) for the Arkansas Nuclear One nuclear power plant to dispose of several major radioactive components (MRC) that have been taken out of service at the two-unit pressurized water reactor.

The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”

The Department of Energy said it anticipated delivering a research cask of high-burnup spent nuclear fuel from Dominion Energy’s North Anna nuclear power plant in Virginia to Idaho National Laboratory by fall 2027. The planned shipment is part of the High Burnup Dry Storage Research Project being conducted by the DOE with the Electric Power Research Institute.

As preparations continue, the DOE said it is working closely with federal agencies as well as tribal and state governments along potential transportation routes to ensure safety, transparency, and readiness every step of the way.

Watch the DOE’s latest video outlining the project here.

Work crews at Idaho National Laboratory have transferred 40 spent nuclear fuel canisters into long-term storage vaults, the Department of Energy’s Office of Environmental Management has reported.

The Department of Energy’s Argonne National Laboratory will collaborate with Wisconsin-based fusion technology company Shine to design new chemical processes for separating valuable materials from used nuclear fuel.

The Department of Energy announced that waste from two more tanks at its Savannah River Site has been removed ahead of schedule. The tanks—numbers 11 and 15—are the fourth and fifth waste containers in 12 months to meet the milestone of preliminary cease waste removal (PCWR) regulatory approval, 7 and 19 months ahead of schedule, respectively, according to the DOE.

Nagra, Switzerland’s national cooperative for the disposal of radioactive waste, has published its general license applications for a deep geologic repository and separate spent fuel encapsulation plant, making the documents publicly available on a digital platform.

This spring, the Department of Energy’s Office of Environmental Management announced that it had achieved a major milestone by completing commissioning of the Safety Significant Confinement Ventilation System (SSCVS) facility—a new, state-of-the-art, large-scale ventilation system at the Waste Isolation Pilot Plant, the DOE’s geologic repository for defense-related transuranic (TRU) waste in New Mexico.

The Swedish Nuclear Fuel and Waste Management Company (Svensk Kärnbränslehantering AB, or SKB) has signed a collaboration agreement with the multinational construction company Implenia to build the first underground section of a deep repository for radioactive waste near Sweden’s Forsmark nuclear power plant.

As the global energy landscape shifts toward safer, smaller, and more flexible nuclear power, Small Modular Reactors (SMRs) and Generation IV technologies are at the forefront of innovation. These advanced designs pose new challenges in size, efficiency, and operating environment that traditional instrumentation and control solutions aren’t always designed to handle.

Matt Bowen

With a new administration and Congress, it is time once again to ponder what will happen—if anything—on U.S. spent nuclear fuel and high-level waste management policy over the next few years. One element of the forthcoming discussion seems clear: The executive and legislative branches are eager to talk about recycling commercial SNF. Whatever the merits of doing so, it does not obviate the need for one or more facilities for disposal of remaining long-lived radionuclides. For that reason, making progress on U.S. disposal capabilities remains urgent, lest the associated radionuclide inventories simply be left for future generations to deal with.

In March, Rick Perry, who was secretary of energy during President Trump’s first administration, observed that during his tenure at the Department of Energy it became clear to him that any plan to move SNF “required some practical consent of the receiving state and local community.”¹