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  1. Frequently Asked Chernobyl Questions - International Atomic …

    1. What caused the Chernobyl accident? On April 26, 1986, the Number Four RBMK reactor at the nuclear power plant at Chernobyl, Ukraine, went out of control during a test at low-power, …

  2. The 1986 Chornobyl nuclear power plant accident

    Jun 13, 2013 · On 26 April 1986, the Number Four reactor at the Chornobyl Nuclear Power Plant in what then was the Soviet Union during improper testing at low-power, resulted in loss of …

  3. What was the economic cost of the Chernobyl nuclear disaster? The Chernobyl nuclear accident, and government policies adopted to cope with its consequences, imposed huge costs on the …

  4. The Enduring Lessons of Chernobyl | IAEA

    Nov 26, 2019 · The April 1986 accident at the Chernobyl nuclear power plant remains a defining moment in the history of nuclear energy. The lessons of this tragedy are interwoven with a …

  5. Chernobyl: The True Scale of the Accident - International Atomic …

    Sep 5, 2005 · A total of up to four thousand people could eventually die of radiation exposure from the Chernobyl nuclear power plant (NPP) accident nearly 20 years ago, an international team …

  6. Environmental Consequences of the Chernobyl Accident and their ...

    Sep 8, 2025 · The explosion on 26 April 1986 at the Chernobyl nuclear power plant and the consequent reactor fire resulted in an unprecedented release of radioactive material from a …

  7. Thirty Years of IAEA Support to Help Mitigate the Consequences …

    Apr 26, 2016 · In the wake of the world’s most serious nuclear accident at the Chernobyl nuclear power plant 30 years ago, the IAEA played central role in coordinating international response …

  8. 30 Years after Chernobyl: IAEA Continues to Support Global Efforts …

    Apr 26, 2016 · Thirty years ago today, an unprecedented aerial release of radionuclides spread over parts of Belarus, Russia and Ukraine following the nuclear power plant accident at …

  9. The Chernobyl Accident: Updating of INSAG-1 | IAEA

    The purpose of this report is to update findings of the International Nuclear Safety Advisory Group’s Summary Report on the Post-Accident Review Meeting on the Chernobyl Accident …

  10. The accident at the Chornobyl Nuclear Power Plant (NPP), occurred on 26 April 1986. Following the accident, the Agency called for a post-accident review meeting on the accident in Vienna, …