Determined Course and Scope of Remediation

As part of the analyses and preparations for the repair of a leak in the pipeline of one of the lines of the primary circuit connection system, the Krško NPP carried out additional investigations using non-destructive methods. With one of them, an indication of an additional anomaly in the pipeline material was identified in the leaking pipe, which led the Krško NPP to decide to completely replace the pipeline segment – from the connection to the reactor vessel to the first valve. For a safe long-term and as soon as possible plant operation, the Krško NPP, in cooperation with the original equipment supplier Westinghouse, decided to replace the pipeline on the other line of the system to the same extent. The decision is conservative, as both pipelines are exposed to the same influences.

The possibility of an increased scope of remediation was already considered when ordering the necessary material (pipelines, reducing elements, and pipeline elbows). All the material is already available in Krško, remediation is in full swing. The first pipeline is successfully removed; preparations are underway for the removal of the second and the installation of new pipeline segments.

For now, plans to reconnect the power plant to the grid in mid-November remain unchanged.