By Reuters Staff 1 Min Read SOFIA, Jan 22 (Reuters) - The Kozloduy nuclear power plant in Bulgaria has shut down one of its two 1,000 megawatt units after a protection system was activated at its Unit 5 following a routine technical operation, a senior Bulgarian official said on Friday. “During a technical operation the automatic defences activated at 0117 a.m. local time. All systems have been checked and there is no reason for concerns in the public,” Ramadan Atalai, a member of the parliamentary energy commission told the national BNT channel. A press officer at the Kozloduy plant confirmed the unit was automatically shut and there was no radioactive contamination. (Reporting by Tsvetelia Tsolova; Editing by Christian Schmollinger)