How Chernobyl Exploded - PART TWO: The Power Drop
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- čas přidán 23. 04. 2024
- It is now midnight, April 26th, 1986. The fifth shift has taken control of Chernobyl Unit Four, and in eighty four minutes, the reactor they are operating will be destroyed. The decisions they make, unbeknownst to them, will determine the fate of the reactor. Now, let’s break down the first hour of the night shift...
With thanks to the following for creating the locations seen in this video:
Control Room 4 - Hydroproject.
/ discord
Control Room 3 - Unit Three
/ discord
Exterior - Gherkinbeans
/ discord
With thanks to Bobby and Sredmash for reviewing the scripts.
I never realised the number of people present at that time
Same
The USSR:A RMBK reactor can not explode.... RBMK Reactor: Let me show you how I explode. Hold my rods!
it didn't hold its rods they escaped! "Peter you've lost the core!"
Get ready for the *sPiCy DrOp*
@@tomarmadiyer26983.6 Röntgen. Not great, not terrible
Would “hold my vodka” be more appropriate?🤔
Very calm explanation of collapse of station of ussr
I think Dyatlov's Avatar should have had an incredible Sombrero on top its head.
Or maybe a cowboy hat. That would have been cool
Or maybe a monocle and a nicely groomed mustache
If you take it off of HBO, a lovely bit of Squirrel
@fuller9x im honestly not quite sure what you mean? Are you suggesting HBOs portrayal of Dyatlov is not accurate?
@@Hugh-Janus69420yea massively. Watch the real interview with dyatlov. It will change your opinion of his actions. Yea they did him dirty as a mofo.
Just wanted to express my gratitude for the info you are providing. It is a gift to future generations on what to do and not do in nuclear energy. They definitely dont teach this in schools
Just want to say I really appreciate the attention to detail in rendering the different reactor staff. I know CGI is difficult, but they all look very realistic.
Not sure if just bad English or Ukrainian / Russian commenter.
@@williamkane The latter, although I wouldn't be sure about the specific nationality. That's sarcasm.
It's impressive to say the least that the sham trial was able to paint Dyatlov as both directly negligent in leading the team because he was present the whole time, and also a lazy and unconcerned worker for his periods of absence.
Another glaring example of the flaws in the USSR's systems being the absence of Chernyshev, although that brings up another scapegoat attempt from the Party in blaming Toptunov for knowingly causing the disaster. I feel it's important to mention that while the operators in the room were aware of the ORM, and subsequently aware that a specialist should have been present, that doesn't mean they were aware of the Positive Void Coefficient to the extent that they could have known what was about to happen.
Loving the Music choice so far this week as well.
You are absolutely knocking it out of the park with the latest videos. And I found a new thing to read about. These self-propelled control rods. This is the first time I ever heard about those, and at this point I have quite the extensive RBMK library. So, I'll have to go and find that Khalimonchuk report. Big props to all the work and research you are putting into the videos. On to the next one!
Blowing the roof off! Never mind the park
This is sooo interesting to see. Makes my week.
Terrific sound design as always. Tick tock.
These videos are remarkable and I can only imagine the number of hours of research that have gone into them. Just as I thought I knew all there was to the events leading up to the explosion, these videos release with an astonishing level of minute-by-minute events (well... nearly.), which is just amazing. I had no idea that there was this much detail to it, so thank you mate
Skittles colored aliens were running the control room? Well, there's your problem!
Great series of videos. I've always been interested (and actually wanted to visit but that's not likely anytime soon) and i love getting into the technical details.
Your narration is great too 😊
btw these animations and 3d models of the RCR are pretty good
Good work, I can't wait to the next episode 👍🏻
As it has been stated already, many times, it's all deserved! You really put a lot of work into these videos! You do on a normal basis, but what you and the graphic designers have done is stellar! I don't get impressed often. However, this has been impressive! You are going to spoil all of us!
Wow, truly a beautiful video. Thank you for providing your sources, some of this information was new to me! Which source would you say most assisted in you making the video?
The only details C(hernobyl guy)3PO misses, is how many sugars they have in their tea with lemon.
I remember when it happened and the often contradictory information coming out.
That's the USSR for ya
Ok Lets go Part is out
HOW DO THE CONTROL RODS WORK
some kid told me the graphite is slowing the reaction down
but why would the rods would be made of boron and the tip of graphite help!
So the procedure called for between 700 and 1000MW of reactor power. However they immediately chose to deviate from the procedure without recourse to technical specialists. From then on they were wasting their time on a flawed test. Struggling increasingly to recover an irrecoverable test for differing reasons and motivations. Inadequate supplies of steam on hand to make the test worthwhile. Management systems should have stepped in at that point and safely aborted the test and returned the reactor to safe status. But they had no management systems. Management systems not design flaws.
The power level was insignificant for the test. It was clerically necessary to write a power level in a program, which according to Dyatlov, who claims to have written it himself, was based on the expected preceding task. With the turbine vibration measurements becoming that task in reality a conflict emerged as keeping the reactor running while disconnecting both turbines at 700 MW was a potential safety issue. Therefore a decision was made to lower the reactor power, which the mentioned report justifies. Ironically, there are apparently indications that despite the reactor blowing up the rundown test was actually a success. Again, there will be videos in the future that go over the principal factors again (not this but the following weekend) and how extensively Soviet nuclear experts twisted the Chernobyl narrative to scapegoat the operators (planned for June).
@@markusw7833 but my understanding was that they needed residual steam to keep the generators spinning long enough to prove that the diesel generators could start and take over in time under standard operating conditions.
Their steam was rapidly depleting.
I suppose that we can never know the real truth but as I keep coming back to, the other units served their time without incident of significance.
I have to say that I may not have done the same amount of research as yourself. However as a quality engineer I have been presented with the purported facts used as an example of poor management systems.
@@robinwells8879 Although I don't know specifics (aside from that apparently generally the turbine spins at the same rate) the power level was not related to the validity of the test. Again, it seems that ironically the test itself might've been successfully completed while everything was lost. As for why Chernobyl had not occurred earlier (other notable incidents had, including at the Chernobyl NPP) the reason we suspect foremost will be covered in that early May video concluding the pre-Chernobyl history. As for purported facts showing poor management and operating behavior, those didn't emerge out of the unreproachable integrity of Soviet nuclear experts. June for those videos.
@@robinwells8879 The test began by cutting off the supply of team to the turbine. Only the inertia of the turbine was important, and the turbine is always spinning at the same speed because that's the only way you can synchronize with the power grid. Furthermore the test program contains a step which seems to allow for further power reduction, and this may have been intended from the start by some of the test authors.
@@MinSredMash yep but they were loosing steam pressure required to maintain the turbine rpm before they started the test process. The turbines needed to be at operating speed to supply internal power by their sheer inertia once external load was removed. They were so far from their goals to start the test process that it was desperation folly to continue motivated by fear of repercussions and/or greed for advancement.
Part 3?
"The decisions they make, unbeknownst to them, will determine the fate of the reactor".. If any nuclear plant operator doesn't think their decisions will have consequences, they're in the wrong job. Pretty sure they knew their decisions would influence the reactor. They just hoped the reactors fate would be a cold offline reactor at the end of their shift. To be fair they did kinda achieve their objective. It did eventually go offline...
Thank you for this channel❤ I still don't understand why Chernobyl performed this test? What was the point and why was this necessary? Please tell me. Thank you.
The reactor needs a constant flow of cooling water in the core. In the event of a total power failure there would be diesel generators that would start to power the pumps. The issue is that there is a delay until the diesel gensets are able to generate the power required.
They theorised a scenario where there was a burst in the cooling plumbing + power loss, which would require extra water pumping capacity.
The test was to verify that the residual inertia from the turbine spinning generated enough power for the extra water pump(s) during the time gap until the diesel generators are up and providing power.
The Wikipedia page has a more detailed description. I actually didn't realise this test was only the burst coolant pipe scenario. I assumed it was for any/all total power loss, until I looked just now. Apparently the normal pumps had counterweights/flywheel to provide power for the time gap.
@@hayleyxyz Thank you for taking the time to answer my question. I couldn't understand why they were running tests on a perfectly fine reactor. Now I see why they would want to develop procedures for different system failures. I remember watching the news of Chernobyl as a kid and feeling scared. Thank you again 😊
@@mattheide2775 No worries :)
Tell me. How does an RBMK reactor explode???
I’m not prepared to explain it at this time
Too many unqualified cooks in the kitchen
they really had enough fun with RBMK reactor 4💀
use water as the moderator and reactor wont go boom boom
Quoting Comrade Dyatov this video was not great not terrible
Dyatov never saw this video BECAUSE ITS NOT THERE!!!!
What a fuckin guy getting this out ASAP.
It would be fun to have an alternative history where the experiment was put on hold indefinitely due to safety concerns. Would another reactor have had a big ole meltdown? What would have happened to civilian attitude towards nuclear power? Would this have affected the fall of the USSR at all?
Long story short
Dumb dumb made big hyper building go boom
I'm going to rebuild chernobyl in my backyard an Invite everybody in the comments to it
Apply for government subsidies.
Nuclear boyscout 2.0
It’s actually possible to build one on a tiny micro scale. The uranium you need can easily be extracted from dirt and rocks in your backyard. If you are going to allow it to run away, please please only use nano grams of material, so there is no risk to the environment or people.
You guys are invited. There's only one rule. Don't raise out all control runs and leave one in.
@@michaelhicks8603 cant be Chernobyl rebuilt without a little radiation contamination now.......
Will you ever make a discord
Maybe :)
@@thatchernobylguy2915 I'll take that as a yes
april 26th is my birthday!!!
just... more than 5, less than 10..... years after CNPP..... but its how i first found out about the accident as a kid (googled events that happened on my B-day)
.
growing up is a scam.....stay in school
So we only get to view two of the four videos. I watched the first one and watch the second one and it just stopped after the second one and no 3rd or 4th video kind of disappointed.
I am releasing one a day. The next one will be out tomorrow.
Also, there's only three parts :)
...What are the release dates?
Super Video clip,informations+graphic,(again no beard,or i didn't sow ones,MY Personal opinion is -that Реактор Болјшој Можности Каналнии-РБМК, COULD be usefull(with minor fixing) ,and WERRY CAREFULy operating with one,-look the perspective from a finantial side-if you spend Much more for safety-than for producing commertial powe usage,when will it pay off? ,in 10000 yeras ? To wait 3 generations to pay off...that is mildely stupid,better that NOT to build a reactor at all,and import electricity-at least it is my thinking out loud
Can someone explain why is there a Roblox avatar in the background 8:16
Because it's in ROBLOX :)
@@thatchernobylguy2915 oh ik the game its RBMK simulator by hodroproject or hidroproject idk
I thought Anatoly Dyatlov was in toilet at that time.
No idea where that came from. He claims to have been walking around the reactor building, I think checking some things.
@@markusw7833 It came from Chernobyl mini series from HBO.
The shift supervisor from April 25th (Kazachkov) made a throwaway comment about Dyatlov being 'in the toilet or somewhere.' And the rest is history.
@@MinSredMash So that's the origin? lol
This is the best Documentation I have ever seen!
The problem is that usually the facts are heavily distorted to blame a bunch of idiots working with an unsafe design that could not safely be used in the first place and that this could never, ever happen anywhere else. This is an attempt to keep the public from loosing trust of nuclear power in general.
There is always more than one story! There is a great tech-talk by Nicolas Means about the "Three Miles Island" incident. When he tells the story the first time during his speech just explaining the facts, you will think that the operators were idiots and everything is very obvious to everybody with half a brain. Then he tells the story again from the point of view of the operators. And this really blows your mind how wrong you were judging the incident during the first version of the story.
czcams.com/video/hMk6rF4Tzsg/video.html
Interesting video, but Chernobyl is not Three Mile Island. The versions are deliberately different.
@@markusw7833 The lesson in Nicolas Means video is how to tell a story.
You can pile facts and looking for people to blame or you can tell the story what really had happened and why without blaming a specific person.
@@CC-ke5np That's not much of a lesson. It's dumb software engineering dogma.
@@markusw7833 So finding out what really caused the accident is "dumb"?
So you prefer the "The scapegoat is dead, it can never, ever happen again!" Strategy?
@@CC-ke5np 33:20 is dumb. You can figure out causes and blame people like walking and chewing gum at the same time. The guy has his little dimwitted software engineering dogma that is unnecessary.
"A number of other experiments" It just struck me: Who in their right mind would run experiments on a working nuclear power reactor? On some scaled down version for R&D? Yes. A power reactor has one job: Provide power. A metric f*ck ton of it. I mean, would a hydroelectric power plant on the grid, running generators worth millions go: "Hm, lets see what happens if we press this button."?
Hindsight is 20:20. They thought the tests were safe and reasonable to run at the time. They thought wrong.
@@TaiahaFPV Put differently, the test was safe and responsible. The reactor wasn't.
My understanding is it is more like a test to verify the system will work as intended for a specific procedure. It’s not a scientific research experiment, exactly.
@@itsacorporatething Quite so. It was an engineering experiment to see if some new equipment and procedures would work. A rather more risky and 'scientific' experiment was planned for the reactor the very next morning. A bunch of representatives from the design bureau had flown in for it.
Let's be serious now,the Reactor Boljsoy Moznosti Kanalni-RBMK,"High powe Channel type Reactor",could operate fine,without aparatchic from polibyro and communist party+wish to be promoted and finaly have toilet paper every friday at home ;) - since i am from eastern europe i know how soviets looked at us from Yugoslavia-we exported goods,to them,and they were happy to get things from Yugoslavia,they were soooooo poor,no meat,no food,no candy,empy store shelfs,but ICBM rockets and military hade to be strong (even they used antique technology from 50's)-tryeing to compete with USA,that was allready in 22 century..hahahaha
Why not make this in one video!?
)
What game on Roblox is this?
See the description. :)