In the evening, on December 1, there was a break in the Zaporizhzhya TPP — Ferosplavna power transmission line with a voltage of 330 kV, through which the station received power from the Ukrainian power system, reports Energoatom.
In connection with the complete blackout, the ZNPP switched to powering its own needs from diesel generators.
According to Ukrenergo, all 20 diesel generators turned on automatically, 8 of which were later left in operation.
"The biggest security threat in this state exists at power unit 4. It is caused by the fact that the occupiers used it in violation of the terms of the license for the operation of nuclear reactor installations of the Ukrainian regulator and kept it in a hot state. De-energization of the main circulation pumps that cool the active zone leads to the transition of the reactor installation to the mode of natural circulation. This mode is difficult for the reactor plant, its duration is limited by the project, and it can lead to the failure of the main equipment of the power unit. The block needs to be transferred to a cold state urgently."
Energoatom adds that, thanks to the efforts of Ukrainian specialists, the connection with the Ukrainian energy system was restored on December 2 at 7 am.
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