A nuclear reactor in western Ukraine was shut down automatically when sensors indicated a malfunction of its turbines.
The shutdown occurred late Tuesday. There was no increase in radiation levels at the troublesome reactor No. 2 in the Khmelnitsky nuclear power plant, said a statement from the state-run Energoatom nuclear operator.
The reactor has faced a series of automatic shutdowns since its launch last August.
Ukraine was the site of the world's worst nuclear accident, the 1986 explosion and fire at the Chernobyl nuclear plant, which spewed radiation over much of northern Europe. Chernobyl was finally closed down in 2000.
This ex-Soviet republic continues to operate 15 nuclear reactors, and it has said it is committed to modernizing all of them, the AP reports.