Finland Approves the World’s First Deep Underground Vault for Nuclear Waste
Sam and Leah explain how Finland’s government granted Posiva the world’s first operating permit for a deep underground repository called Onkalo to permanently bury used uranium fuel from nuclear power plants, why spent fuel stays dangerous for tens or hundreds of thousands of years even after forty years of underwater cooling, how iron-and-copper canisters, swelling bentonite clay, and nearly two-billion-year-old granite bedrock fourteen hundred feet underground work together to keep water from carrying radioactive material toward people, and what final safety inspections remain before burial begins.
Show notes
In this episode
- 0:01 Opening
- 0:17 Finland approves the world’s first deep underground vault for nuclear waste
- 4:48 Recap and outro
Sources and context
- Finland approves the world’s first deep underground vault for nuclear waste: Posiva Oy — Historic decision: Finnish Government grants operating licence to Posiva and Teollisuuden Voima Oyj (TVO) — Yet Another Good Reason to Be Proud of Olkiluoto and Fortum — Posiva’s operating licence is the result of decades of commitment, expertise and cooperation and Posiva Oy — Repository in ONKALO and Posiva Oy — Encapsulation plant and Posiva Oy — Disposal canister
