Canada has formally initiated the regulatory process of licensing its proposed deep geological repository for spent nuclear fuel, with the country’s Nuclear Waste Management Organization (NWMO) announcing that it has submitted an initial project description to the Canadian government.

According to the NWMO, the initial project description is a foundational document, detailing the repository’s purpose, need, and expected benefits and explaining how the project will be implemented. It also provides a preliminary assessment of potential impacts and describes measures to avoid or mitigate them. The NWMO is the not-for-profit organization responsible for managing Canada’s nuclear waste.

Canada has formally initiated the regulatory process of licensing its proposed deep geological repository for spent nuclear fuel, with the country’s Nuclear Waste Management Organization (NWMO) announcing that it has submitted an initial project description to the Canadian government.

According to the NWMO, the initial project description is a foundational document, detailing the repository’s purpose, need, and expected benefits and explaining how the project will be implemented. It also provides a preliminary assessment of potential impacts and describes measures to avoid or mitigate them. The NWMO is the not-for-profit organization responsible for managing Canada’s nuclear waste.

France’s Nuclear Safety and Radiation Protection Authority (ASNR) completed its technical review and issued a satisfactory opinion on Andra’s license application to construct the Cigéo deep geological disposal facility. Andra is the French national agency responsible for the safe management of all radioactive waste in the country.

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.

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.

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.

The Nuclear Waste Management Organization, which is mandated by law to develop an approach for the long-term care of Canada’s spent nuclear fuel, has begun collecting feedback from Canadians and Indigenous people to help refine its process for selecting a second deep geologic repository site.

Canada’s Nuclear Waste Management Organization has selected five companies it is to work with to design and plan the organization’s proposed deep geologic repository for spent nuclear fuel. As the owner of the project, the NWMO will be working with WSP Canada, Peter Kiewit Sons (Kiewit), Hatch Ltd., Thyssen Mining Construction of Canada, and Kinectrics.

A recent American Nuclear Society webinar tackled misconceptions about nuclear waste. Christopher Perfetti, an associate professor of nuclear engineering at the University of New Mexico, presented “The How, Why, and Where of Nuclear Waste,” the latest online event in ANS’s Educator Training offerings.

Finland’s Radiation and Nuclear Safety Authority (STUK) stated that if everything goes well, it can complete the assessment of the operating license for the country’s deep geologic repository for spent nuclear fuel “well before the end of the year.”

Finland’s regulatory authority, the Radiation and Nuclear Safety Authority (STUK), announced that it was further delaying issuing a statement on the safety case for the Onkalo spent nuclear fuel repository until 2025, saying that Posiva’s license application material is not yet ready.

While the United States was celebrating Thanksgiving Day, Canada’s Nuclear Waste Management Organization (NWMO) announced that it has selected a site in northwestern Ontario for a deep geologic repository to hold the country’s spent nuclear fuel

Canada’s Nuclear Waste Management Organization (NWMO) announced that Wabigoon Lake Ojibway Nation has indicated its willingness to support moving forward to the next phase of the site selection process to host a deep geological repository for Canada’s spent nuclear fuel.

The municipality of South Bruce, located near the Bruce nuclear power plant in southwestern Ontario, voted narrowly in favor of being a willing host to a potential deep geologic repository for Canada’s spent nuclear fuel. The official declaration of results from the municipality showed that 51 percent of South Bruce residents voted in favor of the referendum, with 1,604 voting "yes" and 1,526 voting "no." Voter participation was 69 percent, surpassing the 50 percent voter turnout required to make the vote binding by law.

Finland’s waste management organization Posiva announced that it has begun a trial run of placing spent fuel canisters in the Onkalo geologic repository, which is located near the Olkiluoto nuclear power plant in southwestern Finland. No spent fuel will be disposed of during the trial run, which is expected to last several months.

The township of Ignace in northwestern Ontario has indicated its willingness to host a potential deep geologic repository for Canada’s spent nuclear fuel. The town council voted unanimously on July 10 to pass a resolution indicating its willingness to participate in the Nuclear Waste Management Organization’s (NWMO's) process for selecting a repository site, making it the first Canadian community to officially move forward with the next phase of a site selection process that began in 2010.

Canada’s Nuclear Waste Management Organization, a not-for-profit organization responsible for the long-term management of the country’s intermediate- and high-level radioactive waste, is set to select a site for a deep geologic repository by the end of the year.

The Nuclear Waste Management Organization, the not-for-profit organization responsible for managing Canada’s spent nuclear fuel, said it will begin developing a plan for a consent-based siting process for a deep geologic repository for intermediate-level and nonfuel high-level radioactive waste.

Sandia National Laboratories engineers Emily Stein, left, and Paul Mariner discuss recent results from their Geologic Disposal Safety Assessment software framework.

Ten teams of scientists from across the globe, including teams from the United States, Canada, Germany, and Taiwan, are virtually comparing software tools developed to assess the safety performance of deep geologic repositories for nuclear waste. The virtual workshop, held this month, is being conducted by members of an international collaboration called Development of Coupled Models and their Validation against Experiments, or DECOVALEX.

“The DECOVALEX initiative creates an important framework for experts in repository sciences from around the world to test and improve simulation models that are important to assessing the safety of geologic disposal,” said Jens Birkholzer, chairman of the initiative and a senior scientist at Lawrence Berkeley National Laboratory.

Despite the challenges of the past year, Canada is on track to select a deep geologic repository site for the country’s used nuclear fuel by 2023, the Nuclear Waste Management Organization said in its annual report to the Canadian government. In conformance with Canada’s Nuclear Fuel Waste Act, the report, Guided by science. Grounded in knowledge. Committed to partnership, was submitted to Natural Resources Minister Seamus O’Regan on March 25.