The second reactor of the Yuzhnoukrainsk Nuclear Power Station in Ukraine was shut down following a break in a high-voltage line that caused failure of its main transformer late Monday. It was unplugged from the country’s energy grid, according to the Emergency Situations Ministry.
Authorities said radiation levels were not elevated.
"Currently there is no threat of fire or radiation leak in the station," said the ministry's press service in a statement on its website.
The Ukrainian power plant, located in Mykolaiv region, is the second largest of five nuclear power stations in Ukraine. Yuzhnoukrainsk has three reactors with a total capacity of 2,850 megawatts.