Ukraine’s three operating nuclear power plants (NPPs) reduced their electricity generation on 28 November following renewed attacks on the country’s energy infrastructure that further endangered nuclear safety during the military conflict, Rafael Grossi, director general of the International Atomic Energy Agency (IAEA) said at the release of the International Atomic Energy Agency’s report Update 262.

For a second time in less than two weeks, the Khmelnytskyy, Rivne and South Ukraine NPPs lowered their power levels as a precautionary step during widespread military activities in the country, while air raid alarms sounded at the three sites, said Mr Grossi said. Two of the IAEA teams deployed in Ukraine were forced to seek shelter.

The operating NPPs have a total of nine reactors, all of which decreased output. One reactor, at the Rivne NPP, was also disconnected from the grid. The NPPs continued to receive external electricity, even though the Khmelnytskyy site lost the connection to two of its power lines.

“Ukraine’s energy infrastructure is extremely fragile and vulnerable, putting nuclear safety at great risk,” director general Grossi said. “Once again, I call for maximum military restraint in areas with major nuclear energy facilities and other sites on which they depend.”

There were no reports of direct damage to the NPPs, but the IAEA was informed by Ukraine that the strikes once again impacted the electrical substations which the plants use to transmit and receive off-site power.