BUCHAREST, March 29 (Reuters) - Romanian state-owned nuclear power producer Nuclearelectrica said on Tuesday its Unit 2 reactor automatically disconnected from the power grid after a glitch in the electric system.

The company halved the reactor’s capacity on Sunday to replace a pump engine part, but it was back at full generation on Monday.

“There is no connection between reducing Unit 2’s capacity on March 25 and today’s automatic disconnection,” Nuclearelectrica said in a statement.

The company has two 706 megawatt reactors at Cernavoda in southeastern Romania, accounting for roughly a fifth of the country’s power production. Its first unit was shut down for roughly 48 hours to assess a defect which occurred at one of the plant’s process systems. 

Radio Romania International reports that the unit was shut down in accordance with technical prescriptions and there was never any danger to staff, population, and environment.