The power station Ukraine

The nuclear power plant under attack in the east Ukraine, there is a power station that was being controlled by the Ukrainian military. A week ago on NPR that control was necessary to keep the power flowing and keep the plant running.

Tonight with little fanfare that plant is no longer supplying energy to the area.

My guess is that station was lost to Russian forces. The news media are not saying that. There now is no mention in the reports of the power station. It is off the nuclear site.

The nuclear plant engineers are figuring out how to shut the plant down. If they shut down the diesel fuel will run out in ten days and the reactor will overheat. It is a crisis.

I do not know if the plant can do a slower shut down using its own electricity to cool the water for a good while longer than ten days. Then kicking in the diesel for ten days to have a safer shut down.

It would be interesting if the Americans could fly in batteries to take some of that electricity to power the plant cool down over time.

Or if diesel fuel will be allowed into the country by the Russian for the plant.

I do not know if the plant can do a slower shut down using its own electricity to cool the water for a good while longer than ten days. Then kicking in the diesel for ten days to have a safer shut down.

The news reported, a week or so ago, that one reactor is running, to provide power to cool the others.

Steve

The nuclear power plant under attack in the east Ukraine, there is a power station that was being controlled by the Ukrainian military.

Do you have a name or location for the plant?

DB2

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https://www.abc.net.au/news/2022-09-09/ukrainian-nuke-plant-…

DB2,

Turns out the last power line to the plant was cut on Monday. It probably does not matter now who controls the power station.

The nuclear power plant under attack in the east Ukraine, there is a power station that was being controlled by the Ukrainian military.

Do you have a name or location for the plant?

Turns out the last power line to the plant was cut on Monday. It probably does not matter now who controls the power station.

Ah, Zaporizhzhia. That was captured by the Russians six months ago.

DB2

Ah, Zaporizhzhia. That was captured by the Russians six months ago.

DB2


We all know that.

The issue is the plant has to supply power or there are problems. The last line out to supply power to the area was cut on Monday. This is a crisis.

The amount of residual heat a plant produces is proportional to the recent power history of the plant. From full power it starts at ~6% and decays from there. If the plant was operating at 50% power in the few days before shutdown the starting point is lower…about 3%. Thus the needed duration of cooling is less. The plant operators know this and could be planning a slow shutdown.

Mike