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1 1 (April 12, 2024)

handle is hein.crs/goveppe0001 and id is 1 raw text is: Russian Military Actions at Ukraine's Nuclear
Power Plants
Updated April 12, 2024
Russia's military occupation of Ukraine's six-reactor Zaporizhzhia nuclear power plant (ZNPP)-the
largest in Europe-has raised widespread alarm about potential damage to the plant that could cause large
radioactive releases to the environment. Russian forces captured the plant on March 4, 2022, with
reported heavy fighting and artillery shelling. Since September 2022, an International Atomic Energy
Agency (IAEA) expert team at the plant has been assessing safety conditions. The United States has
called on Russia to withdraw its military and civilian personnel from the plant and return full control
of the plant to the competent Ukrainian authorities.
Multiple drone strikes on the plant on April 7, 2024-including the containment dome roof of one of the
reactors-constituted a major escalation of the nuclear safety and security dangers, according to IAEA
Director General Rafael Mariano Grossi. The IAEA team found no damage to the plant's critical safety
systems. The IAEA Board of Governors held a special session on April 11 to discuss potential dangers,
and the UN Security Council scheduled a similar meeting for April 15. IAEA experts at the ZNPP have
not been given access to all areas of the site.
Since August 2022, military action in region has severed all off-site power to the Zaporizhzhia plant eight
times, according to the IAEA. Whenever offsite power is lost, the plant's emergency diesel generators are
activated to provide electricity for reactor cooling systems. The plant's six reactors have been shut down
since September 2022. However, decay heat from the reactors' nuclear fuel must be continuously
removed to prevent overheating and radioactive releases.
Military actions have affected the cooling water supply for the plant. Since Russian forces destroyed the
Kakhovka Reservoir dam in 2023, replacement groundwater wells supply cooling water to the plant.
Ukraine's top nuclear regulatory official said that lack of maintenance and repairs over two years of
occupation has led to a significant degradation of nuclear and radiation safety and lack of emergency
response capability.
Congressional Research Service
https://crsreports.congress.gov
IN11883
CRS INSIGHT
Prepared for Members and
Committees of Congress

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