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This article is written in British English with Oxford spelling (colour, realize, organization, analyse; note that -ize is used instead of -ise) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus.

Chernobyl disaster is a former featured article candidate. Please view the links under Article milestones below to see why the nomination was archived. For older candidates, please check the archive.

Article milestones Date Process Result March 8, 2006 Good article nominee Listed May 7, 2006 Good article reassessment Delisted January 3, 2009 Featured article candidate Not promoted February 14, 2013 Good article nominee Not listed Facts from this article were featured on Misplaced Pages's Main Page in the "On this day..." column on April 26, 2004, April 26, 2005, April 26, 2006, April 26, 2007, April 26, 2009, April 26, 2012, April 26, 2013, and April 26, 2016. Current status: Former featured article candidate

Bridge of Death (Prypiat) was nominated for deletion. The discussion was closed on 27 March 2009 with a consensus to merge. Its contents were merged into Chernobyl disaster. The original page is now a redirect to this page. For the contribution history and old versions of the redirected article, please see its history; for its talk page, see here.

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Text and/or other creative content from this version of Chernobyl after the disaster was copied or moved into Chernobyl disaster with this edit on 03 May 2012. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists.

This article has been viewed enough times to make it onto the all-time Top 100 list. It has had 81 million views since December 2007.

This article has been viewed enough times in a single week to appear in the Top 25 Report 7 times. The weeks in which this happened: September 7 to 13, 2014 April 24 to 30, 2016 May 19 to 25, 2019 May 26 to June 1, 2019 June 2 to 8, 2019 June 9 to 15, 2019 June 16 to 22, 2019

There is a request, submitted by Catfurball, for an audio version of this article to be created. For further information, see WikiProject Spoken Misplaced Pages. The rationale behind the request is: "Important".

Section sizes Section size for Chernobyl disaster (65 sections) Section name Byte count Section total (Top) 9,504 9,504 Accident sequence 25 50,281 Background 20 19,122 Reactor cooling after shutdown 5,676 5,676 Safety test 2,517 2,517 Test delay and shift change 3,852 3,852 Unexpected drop of the reactor power 4,184 4,184 Reactor conditions priming the accident 2,873 2,873 Accident 18 15,325 Test execution 1,801 1,801 Reactor shutdown and power excursion 6,042 6,042 Explosions 7,464 7,464 Possible causes for the second explosion 949 5,626 Fizzled nuclear explosion hypothesis 4,677 4,677 Immediate response 27 9,015 Fire containment 6,823 6,823 Radiation levels 2,165 2,165 Accident investigation 1,168 1,168 Crisis management 25 35,909 Evacuation 7,438 7,438 Official announcement 6,553 6,553 Core meltdown risk mitigation 434 11,924 Bubbler pools 8,396 8,396 Foundation protection measures 3,094 3,094 Site cleanup 21 6,877 Debris removal 2,919 2,919 Construction of the sarcophagus 2,187 2,187 Investigations of the reactor condition 1,750 1,750 Area cleanup 3,092 3,092 Site remediation 1,980 31,756 No. 4 reactor confinement 5,089 5,089 Waste management 2,854 7,709 Fuel-containing materials 4,855 4,855 Exclusion zone 5,367 8,845 Forest fire concerns 3,478 3,478 Recovery projects 3,912 3,912 Tourism 4,221 4,221 Long-term effects 22 85,054 Release and spread of radioactive materials 10,834 17,328 Relative isotopic abundances 6,494 6,494 Environmental impact 124 22,675 Water bodies 4,536 4,536 Flora, fauna, and funga 5,656 5,656 Human food chain 7,158 7,158 Precipitation on distant high ground 5,201 5,201 Human impact 514 39,222 Acute radiation effects and immediate aftermath 2,495 2,495 Long-term impact 1,988 1,988 Effects of main harmful radionuclides 3,620 3,620 Disputed investigation 2,246 2,246 Withdrawn investigation 2,624 2,624 Abortions 6,935 6,935 Cancer assessments 12,752 12,752 Other disorders 2,488 2,488 Long-term radiation deaths 3,560 3,560 Socio-economic impact 5,807 5,807 Significance 20 12,595 Nuclear debate 8,087 8,087 In popular culture 4,488 4,488 See also 526 526 Notes 31 31 References 30 239 Works cited 209 209 Further reading 79 79 External links 3,237 3,237 Total 229,211 229,211

Grammar

The fist sentence should read: "At the Chernobyl Nuclear Power Plant in the city of Pripyat, located in the then Ukrainian Soviet Socialist Republic of the Soviet Union (USSR)" instead of: "at the Chernobyl Nuclear Power Plant in the city of Pripyat, then located in the Ukrainian Soviet Socialist Republic of the Soviet Union (USSR)". It did not physically move.

The section titled "Social Economic Effects" should be renamed to "socioeconomic effects" to reflect proper terminology.

minor but this is the English language page "Numerous structural and construction quality issues, as well as deviations from the original plant design, had been known to KGB since at least 1973 and passed on to the Central Committee, which take no action and classified the information." should be "been known to the KGB... which took no action"

Containing fire

The timeline says all fires were contained at 6:35 - this should probably mention "fires around the power plant": The core continued to burn days after, but there is no description what measures really lead to containing the fire inside the reactor. It just says "It is now known that virtually none of the neutron absorbers reached the core." It is not clear what really stopped the fire.

decay heat was the "fire" and it "stopped" being "red hot" like decay heat always does. With time.

Grammar edit request

There's a rather extended high-comma-count "sentence" with what looks to be a misspelling.

The expected highest body activity was in the first few years, were the unabated ingestion of local food, primarily milk consumption, resulted in the transfer of activity from soil to body, after the dissolution of the USSR, the now reduced scale initiative to monitor the human body activity in these regions of Ukraine, recorded a small and gradual half-decadal-long rise, in internal committed dose, before returning to the previous trend of observing ever lower body counts each year.

minimal-change improvement:

The expected highest body activity was in the first few years, where the unabated ingestion of local food (primarily milk) resulted in the transfer of activity from soil to body. After the dissolution of the USSR, the now reduced scale initiative to monitor the human body activity in these regions of Ukraine recorded a small and gradual half-decadal-long rise in internal committed dose before returning to the previous trend of observing ever lower body counts each year.

length of lead

This has come up before, see..

https://en.wikipedia.org/Talk:Chernobyl_disaster/Archive_13#Lead_too_long

Dougsim

Famous persons associated with the liquidators of the Chernobyl disaster

Good day to you all and to you personally!!!!!!

So,exactly how it was removed from the article on the English version of the Misplaced Pages website,but still,I think that it will be interesting to someone,let it be in the discussion of this article-so,well,please,at least in the discussion,don’t delete!!!!!!

This is all taken from the same article,but from the Ukrainian version of the Misplaced Pages website and translated in the Google Translate Internet service!!!!!!

• Ukrainian poet Yuriy Izdryk worked as a liquidator of the consequences of the Chernobyl disaster since the end of May 1986 year .At least some mention: .
• The father of Wladimir Klitschko ( Boxing ) and Vitali Klitschko ( Boxing and Mayor of Kyiv , Ukraine in 2014 year –present , etc. ,etc.), Klitschko Volodymyr Rodionovych, participated in overcoming the consequences of the Chernobyl disaster.At least some mention:
• The father Oleksandr of the vocalist of the Ukrainian electro-folk band "ONUKA" Nataliya Zhyzhchenko was one of the liquidators of the consequences of the tragedy at the nuclear power plant.At least some mention: .

Nokil83a (talk) 15:12, 8 February 2024 (UTC)

So out of the three people there is one actual notable person, a poet. The other two are fathers of other people. No reason for inclusion. And for a third time, there is no need to link to common words. Or using six exclamation marks!!!!!! soetermans. 19:35, 8 February 2024 (UTC)

References

1. "Юрій Іздрик: Нащо мені "почесне громадянство Калуша", якщо я не маю за що жити?". Вікна (in Ukrainian). Вікна. 9 February 2015. Archived from the original on 21 March 2023. Retrieved 9 February 2015.
2. "Помер батько братів Кличків". Таблоїд (in Ukrainian). Таблоїд. 13 July 2011. Archived from the original on 19 April 2021. Retrieved 13 July 2011.
3. "Музичний гурт ONUKA". Музична Абетка (in Ukrainian). Музична Абетка. Archived from the original on 28 November 2023. Retrieved 8 February 2024.

Semi-protected edit request on 18 February 2024

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Remove entirely: Such psychological distresses can also significantly increase cancer mortality rates, possibly as much as 97%, nearly double, resulting in as many as ~100,000 additional cancer mortalities among the liquidators. From this accident, the fear of radiological illness has been more of a detriment, and potentially more lethal, upon the lives of affected people than the illnesses themselves and, unlike radioactive contaminants, shows no signs of diminishing in the near future.

Reason: The source study finds an *association* between psychological distress and increased cancer mortality *among people with a history of cancer*. This is a correlation and is certainly not causal. Among those with a history of cancer, correlation between stress and mortality is almost certainly a result of the sicker patients being more psychologically stressed. It is no way suggests that that stress causes increased chances of death; in fact, the opposite is surely the reason. "Stress causes a 97% increase in the changes of dying from cancer" does not pass the smell test and is not stated in the source article. The statement "fear of radiological illness has been more of a detriment, and potentially more lethal, upon the lives of affected people than the illnesses themselves" is completely unsupported and is based on quite obviously faulty logical reasoning. Ngibian (talk) 20:38, 18 February 2024 (UTC)

Done - This was clear original research and has been removed. Jamedeus (talk) 07:58, 22 February 2024 (UTC)

Thickness of Test Metals Around the Reactor, ratio per Mass Uranium..

Heat and at 30 gigaWatts....South Korean Nuclear Electric Plant 103.224.94.4 (talk) 04:11, 22 February 2024 (UTC)

There is currently no source for the assertion that the room was calm when AZ-5 was pressed or that the use of AZ-5 was pre-planned, other than Dyatlov's book.

I to clarify that the current source - Dyatlov's book - is only an assertion from him about the use of AZ-5. My edit was reverted (actually, it wasn't merely reverted, but the language strengthened despite no new sources added).

If we are only going to use Dyatlov's book, that's fine, but the article needs to reflect that. If there are other sources for these claims, then they need to be added.RadicalHarmony (talk) 01:33, 19 April 2024 (UTC)

OK, little update: I've found this, which seems like a viable secondary source, cites many germane primary sources, and seems to more-or-less support the current language in the article: https://chernobylcritical.blogspot.com/p/part-5-after-explosion.html

So perhaps the change I attempted to make it not needed afterall. RadicalHarmony (talk) 02:12, 19 April 2024 (UTC)

It may be worthwhile to know that the author of chernobylcritical.blogspot.com is Sredmash who will probably be able to address your concerns in this specific matter. Reconrabbit 14:33, 19 April 2024 (UTC)

It wasn't entirely clear in the original wording what was meant by the shutdown being planned in advance. The fact that shutdown was planned for that shift in particular is stated in so many sources that I don't even remember which one to cite; you would need to pick a few at random and see if you get lucky.

More unclear is whether the shift intended to shut down right at 1:23:04 when rundown began. For this we primarily have Dyatlov's assertion. In an 'original research' kind of way, it has often been pointed out that the test program contains no step for blocking the two-turbine disconnection trip, so following the instructions to the letter would indeed have automatically scrammed the reactor at 1:23:04. But in fact we can add a separate reputable source for Akimov stating that they planned to shut down as rundown began: https://nsarchive.gwu.edu/document/20285-national-security-archive-doc-01-cc-cpsu (Control-F for "inform" and you should jump right to the relevant passage.)

Eyewitnesses reporting a calm atmosphere preceding the scram include Metlenko, Gazin and others. I agree that we need some citations here. The quotes mostly come from Nikolai Karpan's book, Revenge of the Peaceful Atom. Citing them would be far preferable to using my blog as a source, but I would need to take some time to track down page references, etc.Sredmash (talk) 14:42, 19 April 2024 (UTC)

Crisis management - Evacuation: time discrepancy

The 4th paragraph of section "Crisis management", subsection "Evacuation" contains this sentence:

In the early daylight hours of 27 April, approximately 36 hours after the initial blast (...)

The initial blast occurred at 01:23 AM, therefore 36 hours after the blast would be 01:23 PM, which is certainly not an early daylight hour. 178.143.44.172 (talk) 19:30, 23 April 2024 (UTC)

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