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aResearch Service
Russian Military Actions at Ukraine's Nuclear
Power Plants
Updated September 8, 2022
Russia's ongoing military occupation of Ukraine's six-reactor Zaporizhzhia nuclear power plant
(ZNPP)-the largest in Europe-has raised widespread alarm about the potential for damage to the plant
that could cause large radioactive releases to the environment. Russian forces attacked and captured the
plant on March 4, 2022, with reported heavy fighting and artillery shelling.
Shelling around the plant resumed on August 5, 2022, prompting the International Atomic Energy Agency
(IAEA) to warn, Any military firepower directed at or from the facility would amount to playing with
fire, with potentially catastrophic consequences. Continued shelling during August and September 2022
repeatedly disabled the plant's connections to the surrounding power grid. The loss of offsite power
forced the two reactors that had been operating since the initial Russian takeover to shut down and then
restart when power lines were repaired. According to IAEA's September 7 status report, the plant is
currently disconnected from the grid, and one reactor is operating to provide on-site power.
After months of negotiation, an IAEA expert team arrived at ZNPP on September 1, 2022, to assess the
conditions at the plant. IAEA's report on the mission, issued September 5, 2022, described extensive
damage to plant facilities and surrounding infrastructure from repeated shelling. The report warned that
continued military action represented a constant threat to nuclear safety and security because critical
safety functions (containment of the radioactivity and cooling in particular) could be impacted. The
report called for establishment of a nuclear safety and security protection zone around the ZNPP. It also
noted that the plant's operating staff is subject to constant high stress and pressure which could lead to
increased human error with implications on nuclear safety. Russian forces have seized control of ZNPP
and its management, but the plant's operational personnel have remained on duty. IAEA experts will
remain at the plant to monitor safety conditions.
Nuclear Power Plants Operating in Ukraine
Ukraine has four operating nuclear power plant sites with a total of 15 reactors, which in recent years
have provided about half of Ukraine's total electricity generation. All the operating Ukrainian reactors are
light water reactors (cooled by ordinary water), using designs from the Soviet Union similar in concept to
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