Nuclear experts have raised significant concerns about the long-term management of radioactive waste resulting from Australia’s planned nuclear submarine fleet under the Aukus agreement. According to testimony at a public inquiry, each decommissioned submarine will contain approximately 400 kilograms of highly enriched uranium enriched to roughly 80 percent—the same enrichment level as the atomic bomb dropped on Hiroshima. The uranium-235 contained within this material has a half-life of 700 million years, creating proliferation risks across geological timescales.
Once all eight planned submarines are retired by the end of the century, Australia will be responsible for managing at least 3 tonnes of uranium-235 in spent fuel waste, according to expert estimates. The International Atomic Energy Agency defines a significant quantity of highly enriched uranium sufficient for a weapon as 25 kilograms of uranium-235, meaning the waste from a single submarine could theoretically support construction of more than a dozen nuclear weapons. Experts emphasize the unprecedented challenge of securing such material for millions of years against potential future extraction and weaponization.
Former White House national security advisers have characterized the Aukus arrangement as setting a dangerous precedent for nuclear non-proliferation globally. They note that the agreement requires Australia to retain and manage all spent nuclear fuel indefinitely, departing from decades of United States policy of repatriating such material to minimize proliferation risks. Critics point out that other nations, including Iran, could cite this arrangement to justify their own uranium enrichment programs for purported naval reactor development.
The Australian government maintains commitment to the highest nuclear stewardship standards and states that a suitable disposal facility will be located on existing or future defence property. Officials note that disposal decisions need not be made until the 2050s when the first submarines are decommissioned, allowing time for comprehensive planning and consultation. A nuclear waste site review commissioned in 2023 remains unpublished, though the defence minister confirmed Aukus submarine plans remain on track.
Article Attribution | Read More at Article Source
Article summary produced by Claude AI