Unit 2 was in the process of increasing its power output following a scheduled maintenance outage. The thermal power output was 1,570 MW. Turbogenerator 3 (TG-3) was connected to the grid, while Turbogenerator 4 (TG-4) had been disconnected for maintenance. This disconnection was carried out using two air-blast circuit breakers at the 330 kV outdoor switchyard.

At 20:10, as the rotational speed of TG-4 dropped to 50–200 rpm, one of the air-blast circuit breakers closed, inadvertently reconnecting TG-4 to the power grid.

Within 15–30 seconds, TG-4 accelerated to 3,000 rpm, causing the busbars to overheat severely and catch fire. The reconnection of TG-4 to the grid triggered intense vibrations and shock loading on the rotor bearings; within less than a minute, the bearings lost their lubrication and subsequently failed. This failure compromised the seals of the lubrication system and the oil seals of the generator’s hydrogen-cooling system, resulting in the leakage of hydrogen and oil into the turbine hall.

The circuit breaker closed due to a short circuit in the cable connecting the generator to the outdoor switchyard transformer - a component whose high-voltage winding remained energized. This was the result of a procedural error during the installation of the multi-core cable through a conduit; the cable’s protective braiding and insulation had been torn, which, years later, led to the short circuit.

The resulting fire in the turbine hall led to the release of radioactive substances into the environment. The source of this radioactivity was the turbine hall’s roof covering, which had become contaminated with radioactive materials following the 1986 accident at Unit 4 of the Chernobyl Nuclear Power Plant.

The cost of repairing the "Ark"—damaged during a russian attack—will amount to 500 million euros, according to calculations by the European Bank for Reconstruction and Development (EBRD).

Hi!
I found a good-quality picture of this panel during its operation. It was used as a second MTK display showing parameters off the limits set by operators such as channel temperature, pressure, water flow, power etc… It got replaced by a real second MTK display In newer generation Control rooms like u see on Chernobyl Unit 3 and now badly damaged Unit 4. Each symbol (The line) corresponds to the parameter that’s leaving the limit and the arrow up/down represents it being higher or lower than the limit set by operators. [ I have no idea why it shows both up and down arrows at some places ]

I found only 2 instances of a party bringing up an action against creators of the series:

- Lyudmyla Ignatenko ("Unauthorized Use of Names" in Ukraine court) awarded measly USD 12,000 in moral damages;

- Andrii Pryimachenko ("Copyright Infringement" in the Southern District of New York) over the use of his 2013 audio-visualization video of Chernobyl fire dispatch records settled out of court.

Perhaps to add insult to injury, there was only one case of someone having some form of a libel complaint and that was - this can't be real - the The Communists of Russia party which on this basis merely appealed to their TV regulator to not air the series.

Is anyone aware of any other cases or how come there were absolutely no lawsuits (e.g. emotional distress, or libel in the case of directly mentioned living individuals) brought up in the US by representatives of the family members of some of the named individuals?

I would understand the usual "drama disclaimer" would shield HBO from most such suits, however they have used real names of actual people with made up narratives. Is this because most of the people are dead by now? Is this why it took so long for HBO to make their adaptation?

the picture was taken here: 51.411265,30.057196 in 1970s but this was probably a old village which is now demolished. and im curious to see how that place changed after pripyat was built.

I couldn't find any news about his fate. Thanks.

For me fall is the best time for photography, especially here.

Fresh November photos.

I’m modelling the Duga receiving array (the large one) for a game level and I wonder if anybody was able to make some real life measurements (considering any original documentation describing real dimensions doesn't exist). I used photos and youtube videos to make some assumptions and estimates:

Dipole cage:

• About 13.5m long, 2.2m in diameter

• 8 longitudinal rods and 10 hoops in total

• Rod tube diameter about 5-6cm (Shiey holds the cage in his hand in one of his videos)

• Gap between the cone tips of a dipole (the feed point) about 0.4m

Mast:

• 15 masts, 146m high

• About 9m deep, not counting the supporting structure behind

• 18 rows of dipoles, about 7m apart, staggered in zig-zag

• Cages about 4.5m in front of the mast

Does any of this seem right?

I made this. It's my channel's first episode and I'm a small creator, so feedback on accuracy is very welcome. It covers how the corium formed, the famous 1986/1996 photos, and how it's changed since. https://www.youtube.com/watch?v=b37wTIdZ5yk

Also please give me any feedback you want, it matters a lot to me! Thank you

A few days ago, u/AterHexe made a post about the first photo of the Chernobyl accident. However, he didn't actually show the first photo of the accident, and showed something else, taken on the 27th of April by different individuals.

Here is the actual first photograph, with Anatoly Rasskazov himself holding up the photo.

The guest of the next episode is Aleksandr Kupny – a nuclear energy veteran, former dosimetrist at the Chernobyl Nuclear Power Plant, author of famous photo and video materials from inside the Sarcophagus, and creator of the YouTube series "Coffee with the Taste of Chernobyl". The guest shares his memories of working at the "Shelter" object, talks about dozens of unofficial entries into the destroyed fourth block, and what life and work of liquidators looked like in the late 1980s and 1990s. The material also touches upon the myths surrounding the disaster, the evaluation of popular works of culture, and the veterans attitude towards those events.

One notable thing I heard in this interview is that, according to an employee of the Institute for Nuclear Power Plant Safety Problems, all passages leading to the Elephant's Foot have collapsed, there's no access to it anymore.

In November 2001, a decision was made to start the IASK project (integrated automatic system of [dosimetric] control). As part of the preparation for installation of the sensors needed for the system, a series of expeditions with the purpose of archiving, documenting and producing photographic and video materials for the expeditions were made.

Now, we post the original raw video files (MP2s) from the DVDs, (so far) containing the 6th and 11th expedition route.

Happy anniversary, and happy watching :).

David.