During the cold shutdown of the Slovenian nuclear power plant Krsko weekend, the teams of the plant determined the micro-location of the leak – on the connection system of the primary circuit. A cause analysis and the preparation of an action plan to eliminate the deviation will follow.
This will require more time, probably several weeks and it is too early to assess the forecast for NPP Krsko’s return to operation. A cold shutdown of the power plant means that in addition to the power plant not producing electricity, the temperature and pressure in the primary circuit are significantly reduced, providing conditions for safe repair work.
Last week, a leak in the primary circuit inside the containment was detected. On October 5, the crew started a controlled gradual reduction of power and on October 6 the power plant was disconnected from the network and in the hot standby. After the inspection, it was found that for accurate locating of the leak, considering the provision of safe working conditions, further cooling of the power plant is necessary up to the so-called cold shutdown. The cold shutdown was established over the weekend.