Bulgaria's Kozloduy NPP. Photo by BGNES
A technical glitch switched off Unit 5 of Bulgaria’s sole nuclear power plant, Kozloduy, late on Sunday.
Unit 5’s turbogenerator malfunctioned and was switched off the country's energy grid at 10:39 pm on Sunday, officials say.
The turbogenerator was shut down due to a hydrogen leak in its cooling system.
The incident did not involve the reactor's nuclear facilities. No increased radiation rates have been measured at the premises.
The Atomic Regulatory Agency, the Ministry of Economy and Energy and the Electricity System Operator have been informed about the incident.
Measures have been taken to perform a full analysis of the reasons for the technical problem.