Ukrainian nuclear reactor shuts down after alarm

Officials at the Emergency Situations Ministry said a fall in water levels at a steam generator in the third reactor of the Rivne nuclear power plant caused Thursday`s shutdown.

The ministry said Friday that radiation levels remained normal at the station. Officials declined to give more details.

Ukraine was the site of the 1986 Chernobyl accident, the world`s worst civilian nuclear disaster. The Rivne nuclear plant is of a different design that the Chernobyl reactor.