Zaporizhzhia plant down to diesel generators as shelling cuts power essential for coolingKYIV/VIENNA (Reuters) -Overnight shelling cut power to Ukraine's Russian-occupied Zaporizhzhia nuclear plant, which needs cooling to avoid a meltdown, forcing it to switch to emergency generators, Ukraine's state nuclear company and the U.N. atomic watchdog said on Saturday.“If (the generators) run out of fuel, after that they will stop, and after that there will be a disaster...there will be a melting of the active core and a release of radioactivity from there,” Kotin said.The IAEA, which has two observers present at the plant, confirmed Energoatom's statement that the plant had switched to its diesel generators after shelling at around 1 a.m. cut the main 750 kilovolt line supplying external power to the plant."All the plant's safety systems continue to receive power and are operating normally, the IAEA experts (stationed at Zaporizhzhia) were informed by senior Ukrainian operating staff," the IAEA said.Grossi has been in talks with Russia and Ukraine on setting up a protection zone around the plant, though he has declined to say what that would involve exactly or how it would be enforced or monitored."