Beat on the substations and transmission lines of NPPs: Where do the Russians go to disconnect Ukraine

Residents of different cities heard loud explosions and were left without light. Meanwhile, telegram channels wrote about the emergency stop of the South Ukrainian NPP units. And the head of the Khmelnytsky Ova Sergey Gamaliy reported disconnecting from the Khmelnytsky NPP blocks. In addition, information was received about the translation into the Rivne NPP emergency regime.

Considering that the Zaporizhzhya NPP was captured by the Russians and since September 11, it has been completely translated into cold regime, as a result of the shelling on November 23, according to preliminary data, all Ukrainian nuclear power has been disabled - 15 working units with a total capacity of 13. 835 GW for four NPPs. It is very difficult to check the information and get additional information due to global interruptions with communications throughout Ukraine.

Meanwhile, in its new review, focus analyzes the threat of nuclear power by Russian energy terrorism and how NPPs work in emergency situations. "The impact of missile shelling on NPPs is quite significant, but the information about it is closed.

For example, details about the latest events on RAPS and KhPP [refer to the consequences of shelling on November 15], through which there was a significant deficit of electricity , - said in a comment to focus Yuriy Korolchuk, an expert of the Institute of Energy Strategies.

Let us clarify, earlier in the IAEA reported that during the Russian rocket attack on November 15, the Khmelnytsky Nuclear Power Plant (KhNPP) completely lost access to the power grid and was forced to switch to diesel generators for nine hours. Accordingly, the IAEA reaction should now be expected to be fired on November 23, the consequences of which can be even more serious for the Ukrainian power system.

"On November 15, the Russians were beaten by nodal transformer substations, which was why they interrupted all four lines of 750 square meters at KhNPP. At the South Ukrainian Station, one line was also interrupted to Odessa. As a result, because of the shelling on November 15, Ukraine lost 4 thousand MW of capacities at once.

As the Ukrainian and Russian power systems were synchronized before the war, the Russians know all the "thin" places "where they need blows, " - explains Olga Kosharna, an expert on nuclear power.

The interlocutor of the focus specifies that at the time of disconnection of the power supply from the network at the NPP power units includes backup generators, and if they refuse - the time before the start of melting the active area of ​​the reactor will begin to the consequences as in Fukushima. Recall that when disconnected from the network, the reactors go into "cold stop mode ki "and do not generate electricity.

In this state, blocks do not generate electricity, and in the power system there is a deficiency of generation, which apparently occurs after shelling on November 23. According to Yuri Korolchuk in the focus comment, in the cold state of the power units can work from generators for 10-14 days, which should be sufficient to resolve the issue even with a global blackout. Therefore, Ukrainians have to hope for the smooth operation of generators at NPPs and sufficient reserves of fuel for them.

Unfortunately, the repetition of such acts of terrorism cannot be excluded. According to Kosharna, the attacks are repeated as the Ukrainian side has time to repair the damage. The proof of this was a massive attack on October 23, the consequences of which still have to be evaluated. We will remind, some regions of Ukraine are de -adjacent after the Armed Forces of the Russian Federation carried out a massive shelling of Ukraine on November 23.