It is a historic breakthrough in the area of nuclear waste management, as Finland has created what was considered to be the first permanent nuclear waste vault in the world, called the Onkalo repository. This deep geological repository is located on Olkiluoto Island and is meant to store the highly radioactive spent nuclear fuel safely for thousands of years. The project is the result of decades of combined scientific research and engineering innovation built by Posiva. The solution adopted by Finland is a long-term, sustainable way to dispose of nuclear waste in the world at large, as nations seek ways to dispose of nuclear waste without endangering the environment and causing dangers to the lives of people in future generations due to the side effects of radioactive materials.
Finland’s Onkalo Nuclear Waste Vault: Key Facts and Global Significance
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The Onkalo repository is the first permanent storage facility for spent nuclear fuel in the world.
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It is in proximity to the Olkiluoto nuclear power station in western Finland.
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The storage complex is constructed deep underground (approximately 400-450 metres) in stable rock.
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The facility started to be constructed in 2004 following the extensive site selection and approval procedures.
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Posiva, a company owned by Finnish nuclear operators, is in charge of the project.
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It will be developed to hold about 6,500 tonnes of spent nuclear fuel.
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The waste from nuclear will be put in canisters made of copper, and tunnels will be laid underground.
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These canisters are enclosed with bentonite clay that also serves as a protective buffer.
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The disposal method that the facility employs is the KBS-3, which is a method that is long-term method in terms of safety.
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It is projected that it will become operable sometime in 2026, which is a significant milestone.
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The repository is meant to house radioactive material safely for tens of thousands of years.
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The tunnels will have lids that will be permanently sealed to avoid leaks.
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Finland has its policy of disposing of its own nuclear waste within its borders, and it is reflected in the project.
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It is regarded as an international standard in long-term nuclear waste disposal.
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Being studied by many countries which build their own repositories.
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The project helps in the future of nuclear energy by handling the waste management issue.
Previous Year Questions on Nuclear
| Exam & Year | Question | Options | Correct Answer |
|---|---|---|---|
| UPSC Prelims 2019 | In a nuclear reactor, which of the following is used as a moderator? | (A) Graphite (B) Uranium (C) Thorium (D) Plutonium | (A) Graphite |
| SSC CGL 2020 | The energy released during nuclear fission is due to: | (A) Chemical reaction (B) Mass defect (C) Heat only (D) Pressure | (B) Mass defect |
| RRB NTPC 2021 | Which of the following is a fissile material? | (A) Uranium-235 (B) Uranium-238 (C) Thorium-232 (D) Lead | (A) Uranium-235 |
| NDA 2018 | Nuclear fission can be initiated by bombarding a nucleus with: | (A) Proton (B) Neutron (C) Electron (D) Alpha particle | (B) Neutron |
| SSC CHSL 2019 | Which element is commonly used as fuel in nuclear reactors? | (A) Uranium (B) Hydrogen (C) Nitrogen (D) Oxygen | (A) Uranium |
| RRB Group D 2022 | Heavy water (D₂O) is used in nuclear reactors as: | (A) Fuel (B) Moderator (C) Coolant only (D) Shield | (B) Moderator |
| SSC CPO 2020 | What is the SI unit of radioactivity? | (A) Joule (B) Watt (C) Becquerel (D) Newton | (C) Becquerel |
| NDA 2021 | Nuclear fusion reactions take place at: | (A) Low temperature (B) High temperature (C) Room temperature (D) Zero temperature | (B) High temperature |
| UPSC Prelims 2017 | Which one of the following is India’s first nuclear reactor? | (A) Dhruva (B) Apsara (C) CIRUS (D) Kamini | (B) Apsara |
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Conclusion – Finland’s Onkalo Nuclear Waste Vault
The Onkalo spent nuclear fuel repository of Finland is a revolutionary approach in solving one of the most complicated environmental issues of the globe. Finland has established an international standard of long-term storage of radioactive waste by storing it in safe places deep beneath the ground. This programme, supported by organisations such as the International Atomic Energy Agency, is an indication of how science, policy and responsibility will be coordinated to see to it that the future generations enjoy a safe future and the sustainability of nuclear energy is realised.
