The works are expected to be completed by the beginning of November, the power plant operator said in a press release.
During the planned outage, the reactor will be reloaded with fresh nuclear fuel.
In the past 12 months since the last reloading, Unit 6 has produced over 8.2 billion kWh of electricity, the NPP operator said.
Kozloduy's other operating 1,000 MW unit, Unit 5, is running according to plan.
(SeeNews, September 29, 2021)