Ukrainian nuclear plant reconnected to national grid - operator

FILE PHOTO: A view shows the Zaporizhzhia Nuclear Power Plant in the course of the Russia-Ukraine conflict outside the city of Enerhodar in the Zaporizhzhia region, Russian-controlled Ukraine, November 24, 2022. REUTERS/Alexander Ermochenko/File Photo

KYIV (Reuters) - Ukraine's national grid operator said the Zaporizhzhia nuclear power station was reconnected to the grid on Thursday, easing fears of a disaster after electricity to the plant was lost during Russian air strikes.

Back-up diesel generators - a last line of defence to prevent meltdown from overheating reactor fuel - kicked in after external power was lost to the plant early on Thursday, but they have only enough fuel to power it for 10 days.