SOFIA: Bulgaria's only nuclear power plant will shut down one of its reactors on Saturday -- its third stoppage so far this year -- after a leak of radioactive coolant was discovered, reports AFP.
Two previous incidents including generator malfunctions at Kozloduy's reactors, located in northwest Bulgaria on the Danube River, have triggered shutdowns in June and October.
Kozloduy NPP said Friday that it decided to shut down the reactor before the limits in the technological regulation will be reached.
It added that there was no change in the radiation situation in the working areas and at Kozloduy's site.
Reactor 6 is due to be switched off on Saturday morning. It was not immediately clear when it would be reconnected to the grid.
Kozloduy's second active reactor, the 1,000-megawatt unit 5, was operating at full capacity.
Kozloduy generates about a third of the country's electricity and is vital for Bulgaria's energy security especially during winter months.