"Chernobyl" trifft Millionen Russen ins Mark. Und das, obwohl der Super-GAU heute wie damals unter den Teppich gekehrt wird und Atomstrom. Chernobyl [dt./OV]. Staffel 1. ()X-Ray Die fünfteilige Drama-Serie erzählt die schockierende Geschichte der Reaktor-Katastrophe von Tschernobyl. Es sei wunderbar, dass „Chernobyl“ eine neue Welle des Tourismus in die Sperrzone gebracht habe, schrieb er. Besucher sollten aber.
Chernobyl MDR Kultur
Im April kommt es im ukrainischen Atommeiler Tschernobyl zu einer katastrophalen Kernschmelze. Feuerwehr und Ersthelfer geben alles, um den Unglücksort zu sichern und die Folgen des Ereignisses einzudämmen - doch diese sind weitreichend. Chernobyl ist eine US-amerikanisch-britische Miniserie des Senders HBO, die. Die Nuklearkatastrophe von Tschernobyl ereignete sich am April in Reaktor-Block 4 Mit The Other Report on Chernobyl (Kurzbezeichnung TORCH) wurde ein ‚Gegenreport' zur Ausarbeitung des Tschernobyl-Forums veröffentlicht. Chernobyl [dt./OV]. Staffel 1. ()X-Ray Die fünfteilige Drama-Serie erzählt die schockierende Geschichte der Reaktor-Katastrophe von Tschernobyl. Dezember zur Unterzeichnung des "Memorandum of Understanding on the Closure of the Chernobyl Nuclear Power Plant" (MoU) zwischen den GStaaten. Auf der Filmdatenbank IMDb hat sie "Game Of Thrones" überholt und ist die am besten bewertete Serie jemals: Emmy-Gewinner "Chernobyl". "Chernobyl" trifft Millionen Russen ins Mark. Und das, obwohl der Super-GAU heute wie damals unter den Teppich gekehrt wird und Atomstrom.
"Chernobyl" trifft Millionen Russen ins Mark. Und das, obwohl der Super-GAU heute wie damals unter den Teppich gekehrt wird und Atomstrom. Many translated example sentences containing "Chernobyl" – German-English dictionary and search engine for German translations. Im April kommt es im ukrainischen Atommeiler Tschernobyl zu einer katastrophalen Kernschmelze. Feuerwehr und Ersthelfer geben alles, um den Unglücksort zu sichern und die Folgen des Ereignisses einzudämmen - doch diese sind weitreichend. The city has two general Chernobyl and a hotel. Openbaar aanklager tijdens het proces van Djatlov, Brjoekhanov Priwat Sex Fomin. The expected highest body activity was in the first few years, where 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 Samurai Jack Bs initiative to monitor the human body activity in these regions of Ukraine, recorded a small and gradual half-decadal-long rise, in internal committed dosebefore returning to the previous trend of observing Unrated lower body counts each year. These contributing factors include:. Estimates of the number of deaths that will eventually result from the accident vary enormously; disparities reflect both the lack of solid scientific data and the different methodologies used to quantify mortality—whether the discussion is confined to specific geographical areas Fatih Akin Frau extends worldwide, and whether the Chernobyl are immediate, short term, or long term. Vengeance of peaceful atom in Russian. April die Reaktorkatastrophe von Tschernobyl mit einer Explosion beginnt, wiegelt man ab und will es nicht wahrhaben. Der Gesamtsieger des Rennens Olaf Ludwig sagte dazu später, dass er sich dem Start hätte verweigern können, was aber zum Kiffer Sprüche Ende Tng Bs sportlichen Karriere geführt hätte. Dezember erfolgte. Dadurch konzentrierte Chernobyl die Radioaktivität und ergaben bei Messungen Werte bis zu Becquerel je Kilogramm Chernobyl. Seltsame Charaktere, überraschende Geschichten: hat wunderbare Serien hervorgebracht. Und so ruft man Feuerwehrmänner, Prosieben Lucifer den Brand zu löschen. Nach Tschernobyl fühlten sich 58 Prozent der westdeutschen Bevölkerung persönlich stark bedroht. Der differenzierte Schilddrüsenkrebs als mit Abstand häufigster Typ hat allerdings bei rechtzeitiger medizinischer Behandlung eine der besten Prognosen unter den Krebserkrankungen. Vor allem Letzteres wird als neues Schreckensgeräusch in die Fernsehgeschichte eingehen.
None of them wore any protective gear. Most, including Akimov, died from radiation exposure within three weeks. The nearby city of Pripyat was not immediately evacuated.
The townspeople, in the early hours of the morning, at local time, went about their usual business, completely oblivious to what had just happened.
However, within a few hours of the explosion, dozens of people fell ill. Later, they reported severe headaches and metallic tastes in their mouths, along with uncontrollable fits of coughing and vomiting.
Valentyna Shevchenko , then Chairwoman of the Presidium of Verkhovna Rada Supreme Soviet of the Ukrainian SSR, recalls that Ukraine's acting Minister of Internal Affairs Vasyl Durdynets phoned her at work at to report current affairs; only at the end of the conversation did he add that there had been a fire at the Chernobyl nuclear power plant, but it was extinguished and everything was fine.
When Shevchenko asked "How are the people? Shevchenko then spoke over the phone to Volodymyr Shcherbytsky , general secretary of the Communist Party of Ukraine and de facto head of state, who said he anticipated a delegation of the state commission headed by Boris Shcherbina , the deputy chairman of the Council of Ministers of the USSR.
A commission was established later in the day to investigate the accident. They flew to Boryspil International Airport and arrived at the power plant in the evening of 26 April.
The delegation soon had ample evidence that the reactor was destroyed and extremely high levels of radiation had caused a number of cases of radiation exposure.
Initially it was decided to evacuate the population for three days; later this was made permanent. By on 27 April, buses had arrived in Pripyat to start the evacuation.
A translated excerpt of the evacuation announcement follows:. For the attention of the residents of Pripyat!
The City Council informs you that due to the accident at Chernobyl Power Station in the city of Pripyat the radioactive conditions in the vicinity are deteriorating.
The Communist Party, its officials and the armed forces are taking necessary steps to combat this. Nevertheless, with the view to keep people as safe and healthy as possible, the children being top priority, we need to temporarily evacuate the citizens in the nearest towns of Kiev region.
For these reasons, starting from 27 April , each apartment block will be able to have a bus at its disposal, supervised by the police and the city officials.
It is highly advisable to take your documents, some vital personal belongings and a certain amount of food, just in case, with you.
The senior executives of public and industrial facilities of the city has decided on the list of employees needed to stay in Pripyat to maintain these facilities in a good working order.
All the houses will be guarded by the police during the evacuation period. Comrades, leaving your residences temporarily please make sure you have turned off the lights, electrical equipment and water and shut the windows.
Please keep calm and orderly in the process of this short-term evacuation. To expedite the evacuation, residents were told to bring only what was necessary, and that they would remain evacuated for approximately three days.
As a result, most personal belongings were left behind, and remain there today. By , 53, people were evacuated to various villages of the Kiev region.
The surveying and detection of isolated fallout hotspots outside this zone over the following year eventually resulted in , long-term evacuees in total agreeing to be moved.
Evacuation began one and a half days before the accident was publicly acknowledged by the Soviet Union. Workers at Forsmark reported the case to the Swedish Radiation Safety Authority , which determined that the radiation had originated elsewhere.
That day, the Swedish government contacted the Soviet government to inquire about whether there had been a nuclear accident in the Soviet Union.
The Soviets initially denied it, and it was only after the Swedish government suggested they were about to file an official alert with the International Atomic Energy Agency , that the Soviet government admitted that an accident had taken place at Chernobyl.
At first, the Soviets only conceded that a minor accident had occurred, but once they began evacuating more than , people, the full scale of the situation was realized by the global community.
One of the nuclear reactors was damaged. The effects of the accident are being remedied. Assistance has been provided for any affected people.
An investigative commission has been set up. This was the entire announcement, and the first time the Soviet Union officially announced a nuclear accident.
The mention of a commission, however, indicated to observers the seriousness of the incident,  and subsequent state radio broadcasts were replaced with classical music, which was a common method of preparing the public for an announcement of a tragedy.
Around the same time, ABC News released its report about the disaster. There she spoke with members of medical staff and people, who were calm and hopeful that they could soon return to their homes.
Shevchenko returned home near midnight, stopping at a radiological checkpoint in Vilcha, one of the first that were set up soon after the accident.
There was a notification from Moscow that there was no reason to postpone the 1 May International Workers' Day celebrations in Kiev including the annual parade , but on 30 April a meeting of the Political bureau of the Central Committee of the CPSU took place to discuss the plan for the upcoming celebration.
Scientists were reporting that the radiological background level in Kiev was normal. At the meeting, which was finished at , it was decided to shorten celebrations from the regular three and a half to four hours to under two hours.
These included the Jupiter factory which closed in and the Azure Swimming Pool , used by the Chernobyl liquidators for recreation during the clean-up, which closed in Two floors of bubbler pools beneath the reactor served as a large water reservoir for the emergency cooling pumps and as a pressure suppression system capable of condensing steam in case of a small broken steam pipe; the third floor above them, below the reactor, served as a steam tunnel.
The steam released by a broken pipe was supposed to enter the steam tunnel and be led into the pools to bubble through a layer of water. After the disaster, the pools and the basement were flooded because of ruptured cooling water pipes and accumulated firefighting water, and constituted a serious steam explosion risk.
It became necessary to drain the pool. The bubbler pool could be drained by opening its sluice gates. However, the valves controlling it were underwater, located in a flooded corridor in the basement.
Volunteers in wetsuits and respirators for protection against radioactive aerosols and equipped with dosimeters , entered the knee-deep radioactive water and managed to open the valves.
Research by Andrew Leatherbarrow, author of Chernobyl ,  determined that the frequently recounted story that suggests that all three men died just days after the incident is false.
Alexei Ananenko continues to work in the nuclear energy industry, and rebuffs the growth of the Chernobyl media sensationalism surrounding him.
Once the bubbler pool gates were opened by the Ananenko team, fire brigade pumps were then used to drain the basement. The operation was not completed until 8 May, after 20, tonnes 20, long tons; 22, short tons of water were pumped out.
With the bubbler pool gone, a meltdown was less likely to produce a powerful steam explosion. To do so, the molten core would now have to reach the water table below the reactor.
To reduce the likelihood of this, it was decided to freeze the earth beneath the reactor, which would also stabilize the foundations.
Using oil well drilling equipment, the injection of liquid nitrogen began on 4 May. As an alternative, coal miners were deployed to excavate a tunnel below the reactor to make room for a cooling system.
The final makeshift design for the cooling system was to incorporate a coiled formation of pipes cooled with water and covered on top with a thin thermally conductive graphite layer.
The graphite layer as a natural refractory material would rapidly cool the suspected molten uranium oxide without burn through.
This graphite cooling plate layer was to be encapsulated between two concrete layers, each one meter thick for stabilisation.
This system was designed by Bolshov, the director of the Institute for Nuclear Safety and Development formed in Bolshov's graphite-concrete "sandwich" would be similar in concept to later core catchers that are now part of many nuclear reactor designs.
Bolshov's graphite cooling plate, alongside the prior nitrogen injection proposal, were not used following the drop in aerial temperatures and indicative reports that the fuel melt had stopped.
It was later determined that the fuel had passed through three storeys before coming to rest in one of a number of basement rooms. The precautionary underground channel with its active cooling was therefore deemed redundant, as the fuel was self-cooling.
The excavation was then simply filled with concrete to strengthen the foundation below the reactor. In the months after the explosion, attention turned to removing the radioactive debris from the roof.
The Soviets used approximately 60 remote-controlled robots, most of them built in the Soviet Union. Many failed due to the effect of high levels of radiation on their electronic controls;  in , Valery Legasov , first deputy director of the Kurchatov Institute of Atomic Energy in Moscow, said: "We learned that robots are not the great remedy for everything.
Where there was very high radiation, the robot ceased to be a robot—the electronics quit working. Though the soldiers were only supposed to perform the role of the "bio-robot" a maximum of once, some soldiers reported having done this task five or six times.
To provide radiologocal protection by prevention of airborne contamination, and prevent weathering of the reactor remains, a containment structure was planned.
This was the largest civil engineering task in history, involving a quarter of a million construction workers who all reached their official lifetime limits of radiation.
During the construction of the sarcophagus, a scientific team re-entered the reactor as part of an investigation dubbed "Complex Expedition", to locate and contain nuclear fuel in a way that could not lead to another explosion.
These scientists manually collected cold fuel rods, but great heat was still emanating from the core. Rates of radiation in different parts of the building were monitored by drilling holes into the reactor and inserting long metal detector tubes.
The scientists were exposed to high levels of radiation and radioactive dust. The concrete beneath the reactor was steaming hot, and was breached by now-solidified lava and spectacular unknown crystalline forms termed chernobylite.
It was concluded that there was no further risk of explosion. The official contaminated zones saw a massive clean-up effort lasting seven months.
Defence forces must have done much of the work. Yet this land was of marginal agricultural value. According to historian David Marples, the administration had a psychological purpose for the clean-up: they wished to forestall panic regarding nuclear energy, and even to restart the Chernobyl power station.
Scavengers have since removed many functioning, but highly radioactive, parts. Many, if not most of them, exceeded radiation safety limits.
This was stated to be inherent not only in operations but also during design, engineering, construction, manufacture and regulation.
Views of the main causes were heavily lobbied by different groups, including the reactor's designers, power plant personnel, and the Soviet and Ukrainian governments.
This was due to the uncertainty about the actual sequence of events and plant parameters. After INSAG-1 more information became available, and more powerful computing has allowed better forensic simulations.
Most importantly, the physical characteristics of the reactor made possible its unstable behaviour. The first Soviet official explanation of the accident was by means of presentations from leading Soviet scientists and engineers to a large number of representatives from IAEA member states and other international organisations at the first Post-Accident Review Meeting, held at the IAEA in Vienna between 25 and 29 August This explanation effectively placed the blame on the power plant operators.
For instance; "During preparation and testing of the turbine generator under run-down conditions using the auxiliary load, personnel disconnected a series of technical protection systems and breached the most important operational safety provisions for conducting a technical exercise.
Personnel had an insufficient understanding of technical procedures involved with the nuclear reactor, and knowingly ignored regulations to expedite the electrical test completion.
The main process computer, SKALA, was running in such a way that the main control computer could not shut down the reactor or even reduce power.
Normally the computer would have started to insert all of the control rods. The computer would have also started the "Emergency Core Protection System" that introduces 24 control rods into the active zone within 2.
All control was transferred from the process computer to the human operators. It was held that the designers of the reactor considered this combination of events to be impossible and therefore did not allow for the creation of emergency protection systems capable of preventing the combination of events that led to the crisis, namely the intentional disabling of emergency protection equipment plus the violation of operating procedures.
Thus the primary cause of the accident was the extremely improbable combination of rule infringement plus the operational routine allowed by the power station staff.
On the disconnection of safety systems, Valery Legasov said in , "It was like airplane pilots experimenting with the engines in flight. This view was reflected in numerous publications and artistic works on the theme of the Chernobyl accident that appeared immediately after the accident,  and for a long time remained dominant in the public consciousness and in popular publications.
The trial took place from 7 to 30 July in a temporary courtroom set up in the House of Culture in the city of Chernobyl, Ukraine.
Five plant employees the former deputy chief engineer Anatoly S. Dyatlov ; the former plant director Viktor P. Bryukhanov ; the former chief engineer Nikolai M.
Fomin ; the shift director of Reactor 4, Boris V. Rogozhin ; and the chief of Reactor 4, Aleksandr P. Laushkin were sentenced to 10, 10, 10, five, three and two years respectively in labor camps.
Anatoly Dyatlov was found guilty "of criminal mismanagement of potentially explosive enterprises" and sentenced to 10 years imprisonment—of which he would serve three  —for the role that his oversight of the experiment played in the ensuing accident.
By the time of this report, Ukraine had declassified a number of KGB documents from the period between and related to the Chernobyl plant. It mentioned, for example, previous reports of structural damage caused by negligence during construction of the plant such as splitting of concrete layers that were never acted upon.
They documented more than 29 emergency situations in the plant during this period, eight of which were caused by negligence or poor competence on the part of personnel.
In the INSAG-7 report, most of the earlier accusations against staff for breach of regulations were acknowledged to be either erroneous, being based on incorrect information obtained in August , or less relevant.
The INSAG-7 report also reflected the view of the USSR State Commission account which held that the operators' actions in turning off the Emergency Core Cooling System, interfering with the settings on the protection equipment, and blocking the level and pressure in the separator drum did not contribute to the original cause of the accident and its magnitude, although they may have been a breach of regulations.
In fact, turning off the emergency system designed to prevent the two turbine generators from stopping was not a violation of regulations.
The primary design cause of the accident, as determined by INSAG-7, was a major deficiency in safety features,  : 22 in particular the "positive scram" effect due to the control rods' graphite tips that actually initially increased reactivity when control rods entered the core to reduce reactivity.
Yet "post-accident studies have shown that the way in which the real role of the ORM is reflected in the Operating Procedures and design documentation for the RBMK is extremely contradictory", and furthermore, "ORM was not treated as an operational safety limit, violation of which could lead to an accident".
Even in this revised analysis, the human factor remained identified as a major factor in causing the accident; particularly the operating crew's deviation from the test programme.
The assertions of Soviet experts notwithstanding, regulations did not prohibit operating the reactor at this low power level. INSAG-7 also said, "The poor quality of operating procedures and instructions, and their conflicting character, put a heavy burden on the operating crew, including the chief engineer.
The accident can be said to have flowed from a deficient safety culture, not only at the Chernobyl plant, but throughout the Soviet design, operating and regulatory organizations for nuclear power that existed at that time.
In summary, the major factors were:  : 18— The reactor had a dangerously large positive void coefficient of reactivity.
The void coefficient is a measurement of how a reactor responds to increased steam formation in the water coolant. Most other reactor designs have a negative coefficient, i.
Faster neutrons are less likely to split uranium atoms, so the reactor produces less power negative feedback effect. Chernobyl's RBMK reactor, however, used solid graphite as a neutron moderator to slow down the neutrons , however the cooling water acts like a neutron absorber.
Thus neutrons are moderated by the graphite even if steam bubbles form in the water. Furthermore, because steam absorbs neutrons much less readily than water, increasing the voids means that more moderated neutrons are able to split uranium atoms, increasing the reactor's power output.
This was a positive feedback regenerative process which makes the RBMK design very unstable at low power levels, and prone to sudden energy surges to a dangerous level.
This behaviour is counter-intuitive, and this property of the reactor was unknown to the crew. There was a significant flaw in the design of the control rods that were inserted into the reactor to slow down the reaction rate by neutron absorption.
In the RBMK design, the bottom tip of each control rod was made of graphite and was 1. Only the upper part of the rod was made of boron carbide , which absorbs neutrons and thereby slows the reaction.
With this design, when a rod was inserted from the fully retracted position, the graphite tip displaced neutron-absorbing water, initially causing fewer neutrons to be absorbed and increasing reactivity.
For the first few seconds of rod deployment, reactor core power was therefore increased, rather than reduced. This feature of control rod operation was counter-intuitive and not known to the reactor operators.
Other deficiencies were noted in the RBMK reactor design, as were its non-compliance with accepted standards and with the requirements of nuclear reactor safety.
These contributing factors include:. The force of the second explosion and the ratio of xenon radioisotopes released after the accident led Yuri V.
Dubasov in to theorise that the second explosion could have been an extremely fast nuclear power transient resulting from core material melting in the absence of its water coolant and moderator.
Dubasov argued that there was no delayed supercritical increase in power but a runaway prompt criticality which would have developed much faster.
He felt the physics of this would be more similar to the explosion of a fizzled nuclear weapon , and it produced the second explosion.
Khlopin Radium Institute measured anomalous high levels of xenon — a short half-life isotope — four days after the explosion. This meant that a nuclear event in the reactor may have ejected xenon to higher altitudes in the atmosphere than the later fire did, allowing widespread movement of xenon to remote locations.
Both his and analyses argue that the nuclear fizzle event, whether producing the second or first explosion, consisted of a prompt chain reaction that was limited to a small portion of the reactor core, since self-disassembly occurs rapidly in fizzle events.
Dubasov's nuclear fizzle hypothesis was examined in by physicist Lars-Erik De Geer who put the hypothesized fizzle event as the more probable cause of the first explosion.
This jet then rammed the tubes' kg plugs, continued through the roof and travelled into the atmosphere to altitudes of 2.
The steam explosion which ruptured the reactor vessel occurred some 2. Although it is difficult to compare releases between the Chernobyl accident and a deliberate air burst nuclear detonation, it has still been estimated that about four hundred times more radioactive material was released from Chernobyl than by the atomic bombing of Hiroshima and Nagasaki together.
However, the Chernobyl accident only released about one hundredth to one thousandth of the total amount of radioactivity released during nuclear weapons testing at the height of the Cold War ; the wide estimate being due to the different abundances of isotopes released.
The initial evidence that a major release of radioactive material was affecting other countries came not from Soviet sources, but from Sweden.
It was Sweden's search for the source of radioactivity, after they had determined there was no leak at the Swedish plant, that at noon on 28 April, led to the first hint of a serious nuclear problem in the western Soviet Union.
Hence the evacuation of Pripyat on 27 April 36 hours after the initial explosions was silently completed before the disaster became known outside the Soviet Union.
The rise in radiation levels had at that time already been measured in Finland, but a civil service strike delayed the response and publication.
Contamination from the Chernobyl accident was scattered irregularly depending on weather conditions, much of it deposited on mountainous regions such as the Alps , the Welsh mountains and the Scottish Highlands , where adiabatic cooling caused radioactive rainfall.
The resulting patches of contamination were often highly localized, and localised water-flows contributed to large variations in radioactivity over small areas.
Sweden and Norway also received heavy fallout when the contaminated air collided with a cold front, bringing rain. Heavy, black-coloured rain fell on the city of Gomel.
A large area in Russia south of Bryansk was also contaminated, as were parts of northwestern Ukraine. Studies in surrounding countries indicate that more than one million people could have been affected by radiation.
Recently published data from a long-term monitoring program The Korma Report II  shows a decrease in internal radiation exposure of the inhabitants of a region in Belarus close to Gomel.
Resettlement may even be possible in prohibited areas provided that people comply with appropriate dietary rules. In Western Europe, precautionary measures taken in response to the radiation included banning the importation of certain foods.
In France officials stated that the Chernobyl accident had no adverse effects. The Chernobyl release was characterised by the physical and chemical properties of the radio-isotopes in the core.
Particularly dangerous were the highly radioactive fission products , those with high nuclear decay rates that accumulate in the food chain, such as some of the isotopes of iodine , caesium and strontium.
Iodine was and caesium remains the two most responsible for the radiation exposure received by the general population. Detailed reports on the release of radioisotopes from the site were published in  and ,  with the latter report updated in At different times after the accident, different isotopes were responsible for the majority of the external dose.
The release of radioisotopes from the nuclear fuel was largely controlled by their boiling points , and the majority of the radioactivity present in the core was retained in the reactor.
Two sizes of particles were released: small particles of 0. The dose that was calculated is the relative external gamma dose rate for a person standing in the open.
The exact dose to a person in the real world who would spend most of their time sleeping indoors in a shelter and then venturing out to consume an internal dose from the inhalation or ingestion of a radioisotope , requires a personnel specific radiation dose reconstruction analysis and whole body count exams, of which 16, were conducted in Ukraine by Soviet medical personnel in The Chernobyl nuclear power plant is located next to the Pripyat River, which feeds into the Dnieper reservoir system, one of the largest surface water systems in Europe, which at the time supplied water to Kiev's 2.
Despite this, two months after the disaster the Kiev water supply was switched from the Dnieper to the Desna River. Groundwater was not badly affected by the Chernobyl accident since radionuclides with short half-lives decayed away long before they could affect groundwater supplies, and longer-lived radionuclides such as radiocaesium and radiostrontium were adsorbed to surface soils before they could transfer to groundwater.
Although there is a potential for transfer of radionuclides from these disposal sites off-site i. Bio-accumulation of radioactivity in fish  resulted in concentrations both in western Europe and in the former Soviet Union that in many cases were significantly [ vague ] above guideline maximum levels for consumption.
The 55 Cs provides a sharp, maximal, data point in radioactivity of the core sample at the depth, and acts as a date check on the depth of the 82 Pb in the core sample.
After the disaster, four square kilometres 1. The next generation appeared to be normal. On farms in Narodychi Raion of Ukraine it is claimed that from to nearly animals were born with gross deformities such as missing or extra limbs, missing eyes, heads or ribs, or deformed skulls; in comparison, only three abnormal births had been registered in the five years prior.
In , Soviet medical teams conducted some 16, whole-body count examinations on inhabitants in otherwise comparatively lightly contaminated regions with good prospects for recovery.
This was to determine the effect of banning local food and using only food imports on the internal body burden of radionuclides in inhabitants.
Concurrent agricultural countermeasures were used when cultivation did occur, to further reduce the soil to human transfer as much as possible.
The expected highest body activity was in the first few years, where 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.
This momentary rise is hypothesized to be due to the cessation of the Soviet food imports together with many villagers returning to older dairy food cultivation practices and large increases in wild berry and mushroom foraging, the latter of which have similar peaty soil to fruiting body, radiocaesium transfer coefficients.
In a paper, a robot sent into the reactor itself returned with samples of black, melanin -rich radiotrophic fungi that grow on the reactor's walls.
Of the , wild boar killed in the hunting season in Germany, approximately one thousand were contaminated with levels of radiation above the permitted limit of becquerels of caesium per kilogram, of dry weight, due to residual radioactivity from Chernobyl.
The caesium contamination issue has historically reached some uniquely isolated and high levels approaching 20, Becquerels of caesium per kilogram in some specific tests; however, it has not been observed in the wild boar population of Fukushima after the accident.
In , long-term empirical data showed no evidence of a negative influence of radiation on mammal abundance. On high ground, such as mountain ranges, there is increased precipitation due to adiabatic cooling.
This effect occurred on high ground in Norway and the UK. The Norwegian Agricultural Authority reported that in a total of 18, livestock in Norway required uncontaminated feed for a period before slaughter, to ensure that their meat had an activity below the government permitted value of caesium per kilogram deemed suitable for human consumption.
This contamination was due to residual radioactivity from Chernobyl in the mountain plants they graze on in the wild during the summer. The United Kingdom restricted the movement of sheep from upland areas when radioactive caesium fell across parts of Northern Ireland, Wales, Scotland, and northern England.
In the immediate aftermath of the disaster in , the movement of a total of 4,, sheep was restricted across a total of 9, farms, to prevent contaminated meat entering the human food chain.
Northern Ireland was released from all restrictions in , and by , farms containing around , sheep remained under the restrictions in Wales, Cumbria, and northern Scotland.
The legislation used to control sheep movement and compensate farmers farmers were latterly compensated per animal to cover additional costs in holding animals prior to radiation monitoring was revoked during October and November , by the relevant authorities in the UK.
In the accident's aftermath, people suffered from acute radiation sickness , of whom 31 died within the first three months.
In September , the I. In reporter Grigori Medvedev's book on the accident, there were a number of fishermen on the reservoir a half-kilometer from the reactor to the east.
With the exception of plant employee Shashenock, injured by the blast and never fully regaining consciousness, all serious cases of ARS were treated by the world specialist Dr.
Robert Peter Gale , who documented a first of its kind treatment. In the first few minutes to days, largely due to Np, a 2.
Many of the surviving firefighters, continue to have skin that is atrophied, spider veined with underlying fibrosis due to experiencing extensive beta burns.
The eventual medical report states that 28 people died from acute radiation syndrome over the following days to months. The report says it represents the consensus view of the eight UN organizations.
Of all 66, Belarusian emergency workers, by the mids their government reported that only roughly 0. The four most harmful radionuclides spread from Chernobyl were iodine , caesium , caesium and strontium , with half-lives of 8.
The total ingested dose was largely from iodine and, unlike the other fission products, rapidly found its way from dairy farms to human ingestion.
Long term hazards such as caesium tends to accumulate in vital organs such as the heart,  while strontium accumulates in bones and may thus be a risk to bone-marrow and lymphocytes.
In adult mammals cell division is slow, except in hair follicles, skin, bone marrow and the gastrointestinal tract, which is why vomiting and hair loss are common symptoms of acute radiation sickness.
By the year , the number of Ukrainians claiming to be radiation 'sufferers' poterpili and receiving state benefits had jumped to 3.
Many of these are populations resettled from contaminated zones or former or current Chernobyl plant workers. The World Health Organization states, "children conceived before or after their father's exposure showed no statistically significant differences in mutation frequencies".
The two primary individuals involved with the attempt to suggest that the mutation rate among animals was, and continues to be, higher in the Chernobyl zone, are the Anders Moller and Timothy Mousseau group.
In , geneticist colleagues Ronald Chesser and Robert Baker published a paper on the thriving vole population within the exclusion zone, in which the central conclusion of their work was essentially that "The mutation rate in these animals is hundreds and probably thousands of times greater than normal".
This claim occurred after they had done a comparison of the mitochondrial DNA of the "Chernobyl voles" with that of a control group of voles from outside the region.
Following the accident, journalists mistrusted many medical professionals such as the spokesman from the UK National Radiological Protection Board , and in turn encouraged the public to mistrust them.
In Greece, following the accident, many obstetricians were unable to resist requests from worried pregnant mothers over fears of radiation. Worldwide, an estimated excess of about , elective abortions may have been performed on otherwise healthy pregnancies out of fears of radiation from Chernobyl, according to Robert Baker and ultimately a article published by Linda E.
The available statistical data excludes the Soviet—Ukraine—Belarus abortion rates, as they are presently unavailable.
From the available data, an increase in the number of abortions in what were healthy developing human offspring in Denmark occurred in the months following the accident, at a rate of about cases.
As no Chernobyl impacts were detected, the researchers conclude "in retrospect, the widespread fear in the population about the possible effects of exposure on the unborn fetus was not justified".
In very high doses , it was known at the time that radiation could cause a physiological increase in the rate of pregnancy anomalies, but unlike the dominant linear-no threshold model of radiation and cancer rate increases, it was known, by researchers familiar with both the prior human exposure data and animal testing, that the "Malformation of organs appears to be a deterministic effect with a threshold dose " below which, no rate increase is observed.
When the vast amount of pregnancy data does not support this perception as no women took part in the most radioactive liquidator operations, no in-utero individuals would have been expected to have received a threshold dose.
The Chernobyl liquidators , essentially an all-male civil defense emergency workforce, would go on to father normal children, without an increase in developmental anomalies or a statistically significant increase in the frequencies of germline mutations in their progeny.
A report by the International Atomic Energy Agency examines the environmental consequences of the accident. Estimates of the number of deaths that will eventually result from the accident vary enormously; disparities reflect both the lack of solid scientific data and the different methodologies used to quantify mortality—whether the discussion is confined to specific geographical areas or extends worldwide, and whether the deaths are immediate, short term, or long term.
In , thirty-one deaths were directly attributed to the accident , all among the reactor staff and emergency workers. In a peer-reviewed paper in the International Journal of Cancer in , the authors expanded the discussion on those exposed to all of Europe but following a different conclusion methodology to the Chernobyl Forum study, which arrived at the total predicted death toll of 4, after cancer survival rates were factored in they stated, without entering into a discussion on deaths, that in terms of total excess cancers attributed to the accident: .
The risk projections suggest that by now  Chernobyl may have caused about cases of thyroid cancer and cases of other cancers in Europe, representing about 0.
Models predict that by about 16, cases of thyroid cancer and 25, cases of other cancers may be expected due to radiation from the accident, whereas several hundred million cancer cases are expected from other causes.
Two anti-nuclear advocacy groups have publicized non-peer-reviewed estimates that include mortality estimates for those who were exposed to even smaller amounts of radiation.
Yet the death rate from thyroid cancer has remained the same as prior to the technology. This is due to the ingestion of contaminated dairy products, along with the inhalation of the short-lived, highly radioactive isotope, Iodine It is important to note that there was no evidence of an increase in solid cancers or leukemia.
It said that there was an increase in psychological problems among the affected population. According to the United Nations Scientific Committee on the Effects of Atomic Radiation, up to the year , an excess of more than 6, cases of thyroid cancer had been reported.
That is, over the estimated pre-accident baseline thyroid cancer rate, more than 6, casual cases of thyroid cancer have been reported in children and adolescents exposed at the time of the accident, a number that is expected to increase.
They concluded that there is no other evidence of major health impacts from the radiation exposure. The report went into depth about the risks to mental health of exaggerated fears about the effects of radiation.
The IAEA says that this may have led to behaviour that has caused further health effects. Fred Mettler commented that 20 years later: "The population remains largely unsure of what the effects of radiation actually are and retain a sense of foreboding.
A number of adolescents and young adults who have been exposed to modest or small amounts of radiation feel that they are somehow fatally flawed and there is no downside to using illicit drugs or having unprotected sex.
To reverse such attitudes and behaviours will likely take years, although some youth groups have begun programs that have promise.
The number of potential deaths arising from the Chernobyl disaster is heavily debated. The World Health Organization 's prediction of 4, future cancer deaths in surrounding countries  is based on the Linear no-threshold model LNT , which assumes that the damage inflicted by radiation at low doses is directly proportional to the dose.
According to the Union of Concerned Scientists the number of excess cancer deaths worldwide including all contaminated areas is approximately 27, based on the same LNT.
Another study critical of the Chernobyl Forum report was commissioned by Greenpeace, which asserted that the most recently published figures indicate that in Belarus, Russia and Ukraine the accident could have resulted in 10,—, additional deaths in the period between and Although most of the study's sources were from peer-reviewed journals, including many Western medical journals, the higher mortality estimates were from non-peer-reviewed sources,  while Gregory Härtl spokesman for the WHO suggested that the conclusions were motivated by ideology.
Balonov from the Institute of Radiation Hygiene in St. Petersburg, who described them as biased, drawing from sources that were difficult to independently verify and lacking a proper scientific base.
Balanov expressed his opinion that "the authors unfortunately did not appropriately analyze the content of the Russian-language publications, for example, to separate them into those that contain scientific evidence and those based on hasty impressions and ignorant conclusions".
According to U. Nuclear Regulatory Commission member and Professor of Health Physics Kenneth Mossman,  the "LNT philosophy is overly conservative, and low-level radiation may be less dangerous than commonly believed.
Another significant issue is establishing consistent data on which to base the analysis of the impact of the Chernobyl accident. Since , large social and political changes have occurred within the affected regions and these changes have had significant impact on the administration of health care, on socio-economic stability, and the manner in which statistical data is collected.
It is difficult to establish the total economic cost of the disaster. While much of this has been returned to use, agricultural production costs have risen due to the need for special cultivation techniques, fertilizers and additives.
Following the accident, questions arose about the future of the plant and its eventual fate. All work on the unfinished reactors No.
However, the trouble at the Chernobyl plant did not end with the disaster in reactor No. The Ukrainian government allowed the three remaining reactors to continue operating because of an energy shortage in the country.
In October , a fire broke out in the turbine building of reactor No. Soon after the accident, the reactor building was quickly encased by a mammoth concrete sarcophagus in a notable feat of construction under severe conditions.
Crane operators worked blindly from inside lead-lined cabins taking instructions from distant radio observers, while gargantuan-sized pieces of concrete were moved to the site on custom-made vehicles.
The purpose of the sarcophagus was to stop any further release of radioactive particles into the atmosphere, mitigate damage should the core go critical and explode, and provide safety for the continued operations of adjacent reactors one through three.
At first it was assumed that the roof collapsed because of the weight of snow, however the amount of snow was not exceptional, and the report of a Ukrainian fact-finding panel concluded that the collapse was the result of sloppy repair work and aging of the structure.
Experts warned the sarcophagus itself was on the verge of collapse. In , the international Chernobyl Shelter Fund was founded to design and build a more permanent cover for the unstable and short-lived sarcophagus.
The new shelter was named the New Safe Confinement and construction began in The New Safe Confinement was completed in and slid into place over top the sarcophagus on 29 November.
Used fuel from units 1—3 was stored in the units' cooling ponds, and in an interim spent fuel storage facility pond, ISF-1, which now holds most of the spent fuel from units 1—3, allowing those reactors to be decommissioned under less restrictive conditions.
Approximately 50 of the fuel assemblies from units 1 and 2 were damaged and required special handling. Fuel transfers to ISF-1 were completed in June A need for larger, longer-term radioactive waste management at the Chernobyl site is to be fulfilled by a new facility designated ISF This facility is to serve as dry storage for used fuel assemblies from units 1—3 and other operational wastes, as well as material from decommissioning units 1—3 which will be the first RBMK units decommissioned anywhere.
In , after a significant part of the storage structures had been built, technical deficiencies in the design concept became apparent.
The new design was approved in , work started in , and construction was completed in August ISF-2 is the world's largest nuclear fuel storage facility, expected to hold more than 21, fuel assemblies for at least years.
The project includes a processing facility able to cut the RBMK fuel assemblies and to place the material in canisters, to be filled with inert gas and welded shut.
The canisters are then to be transported to dry storage vaults , where the fuel containers will be enclosed for up to years. Expected processing capacity is 2, fuel assemblies per year.
The radioactive material consists of core fragments, dust, and lava-like "fuel containing materials" FCM —also called " corium "—that flowed through the wrecked reactor building before hardening into a ceramic form.
Three different lavas are present in the basement of the reactor building: black, brown, and a porous ceramic. The lava materials are silicate glasses with inclusions of other materials within them.
The porous lava is brown lava that dropped into water and thus cooled rapidly. It is unclear how long the ceramic form will retard the release of radioactivity.
From to , a series of published papers suggested that the self-irradiation of the lava would convert all 1, tonnes 1, long tons; 1, short tons into a submicrometre and mobile powder within a few weeks.
It has been reported that the degradation of the lava is likely to be a slow, gradual process, rather than sudden and rapid.
Even today, radiation levels are so high that the workers responsible for rebuilding the sarcophagus are only allowed to work five hours a day for one month before taking 15 days of rest.
In Ukraine opened up the sealed zone around the Chernobyl reactor to tourists who wish to learn more about the tragedy that occurred in During the dry seasons, a perennial concern is forests that have been contaminated by radioactive material catching on fire.
The dry conditions and build-up of debris make the forests a ripe breeding ground for wildfires. In April forest fires spread through the exclusion zone reaching over 20, ha and caused an increase of radiation resulting from release of cesium and strontium 90 from the ground and biomass at levels that were detectable by the monitoring network but did not pose any threat to human health.
An average resident of Kyiv the dose estimated as result of the fires was 1 nSv. The plan calls for transforming the site into an ecologically safe condition by means of stabilization of the sarcophagus followed by construction of a New Safe Confinement NSC.
The NSC was moved into position in November and is expected to be completed in late The main goal of the CRDP's activities is supporting the Government of Ukraine in mitigating long-term social, economic, and ecological consequences of the Chernobyl catastrophe.
These funds were divided among Ukraine, Belarus, and Russia, the three main affected countries, for further investigation of health effects.
As there was significant corruption in former Soviet countries, most of the foreign aid was given to Russia, and no positive outcome from this money has been demonstrated.
In , it became known that the then-current Ukrainian government aimed to make Chernobyl a tourist attraction.
The Chernobyl accident attracted a great deal of interest. Because of the distrust that many people [ who? Because of defective intelligence based on satellite imagery, it was thought that unit number three had also suffered a dire accident.
The accident also raised concerns about the cavalier safety culture in the Soviet nuclear power industry, slowing industry growth and forcing the Soviet government to become less secretive about its procedures.
In Italy, the Chernobyl accident was reflected in the outcome of the referendum. As a result of that referendum, Italy began phasing out its nuclear power plants in , a decision that was effectively reversed in A referendum reiterated Italians' strong objections to nuclear power, thus abrogating the government's decision of In Germany, the Chernobyl accident led to the creation of a federal environment ministry, after several states had already created such a post.
The minister was given the authority over reactor safety as well, which the current minister still holds as of [update].
The events are also credited with strengthening the anti-nuclear movement in Germany , which culminated in the decision to end the use of nuclear power that was made by the — Schröder government.
In direct response to the Chernobyl disaster, a conference to create a Convention on Early Notification of a Nuclear Accident was called in by the International Atomic Energy Agency.
The resulting treaty has bound signatory member states to provide notification of any nuclear and radiation accidents that occur within its jurisdiction that could affect other states, along with the Convention on Assistance in the Case of a Nuclear Accident or Radiological Emergency.
The Chernobyl, along with the space shuttle Challenger disaster , the Three Mile Island accident , and the Bhopal disaster have been used together as case studies, both by the US government and by third parties, in research concerning the root causes of such disasters, such as sleep deprivation  and mismanagement.
From Wikipedia, the free encyclopedia. This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources.
Unsourced material may be challenged and removed. April Learn how and when to remove this template message. Pripyat evacuation broadcast.
Main article: Chernobyl Nuclear Power Plant sarcophagus. Main article: Individual involvement in the Chernobyl disaster.
Main article: Effects of the Chernobyl disaster. Adults, ages 19 to Adolescents, ages 15 to Children, ages up to Further information: Chernobyl Nuclear Power Plant sarcophagus.
Further information: Chernobyl New Safe Confinement. Further information: Chernobyl Exclusion Zone. See also: Polesie State Radioecological Reserve.
Main articles: Nuclear power debate , nuclear power phase-out , and anti-nuclear movement. According to the General Atomics website:  "It is often incorrectly assumed that the combustion behavior of graphite is similar to that of charcoal and coal.
Numerous tests and calculations have shown that it is virtually impossible to burn high-purity, nuclear-grade graphites.
This is contrary to the often-cited interpretation, which is that the graphite was red-hot chiefly because it was chemically oxidizing with the air.
The confidence of readers was re-established only after the press was allowed to examine the events in detail without the original censorship restrictions.
The policy of openness glasnost and 'uncompromising criticism' of outmoded arrangements had been proclaimed at the 27th Congress of the Communist Party of Soviet Union , but it was only in the tragic days following the Chernobyl disaster that glasnost began to change from an official slogan into an everyday practice.
The truth about Chernobyl that eventually hit the newspapers opened the way to a more truthful examination of other social problems.
More and more articles were written about drug abuse, crime, corruption and the mistakes of leaders of various ranks. A wave of 'bad news' swept over the readers in —87, shaking the consciousness of society.
Many were horrified to find out about the numerous calamities of which they had previously had no idea. It often seemed to people that there were many more outrages in the epoch of perestroika than before although, in fact, they had simply not been informed about them previously.
Electronic Resources Review. Archived PDF from the original on 20 October Retrieved 8 November Retrieved 15 August The Lancet. Archived PDF from the original on 22 June Retrieved 3 June Butterworth Architecture.
Archived from the original PDF on 12 July Japanese Journal of Health Physics. Archived from the original on 28 April World Health Organization.
Archived PDF from the original on 17 April Retrieved 14 April Archived from the original on 25 February BMC Public Health.
European Journal of Cancer. Bibcode : Natur. Kyiv Post. Archived from the original on 5 October BBC News. Archived from the original on 16 August Retrieved 20 August The battle of Chernobyl.
World Nuclear Association. June Archived from the original on 5 November International Atomic Energy Agency.
May Archived PDF from the original on 28 March University of Illinois at Urbana-Champaign. Archived from the original PDF on 14 May Retrieved 26 January United States Department of Energy.
January Archived from the original PDF on 19 March United States Nuclear Regulatory Commission. Archived from the original on 19 June Retrieved 2 June The Legacy of Chernobyl First American ed.
Vengeance of the peaceful atom in Russian. Nuclear Fissionary. Archived from the original on 14 July Retrieved 12 January Atomic Energy in Russian.
Archived from the original on 11 August Physicians of Chernobyl Association in Russian. Archived from the original on 27 February Retrieved 3 September The Truth About Chernobyl Hardcover.
First American edition published by Basic Books in ed. Retrieved 18 July Retrieved 18 June How did it happen? Archived from the original on 2 August Retrieved 14 September The Guardian.
Archived from the original on 8 November Archived from the original on 17 May Retrieved 29 April Interesting Engineering.
The New York Times. Last shift Chernobyl. Ten years later. Inevitability or chance? Moscow: Energoatomizdat. Archived from the original on 24 December Retrieved 30 November General Atomics.
Archived from the original on 17 July Retrieved 13 October New Scientist. Archived from the original on 15 May Retrieved 8 November — via ecolo.
Archived from the original on 24 September Retrieved 11 September March Archived from the original PDF on 11 December Development of ideas about reasons and processes of emergency on the 4th unit of Chernobyl NPP Slavutich, Ukraine: International conference "Shelter".
National Geographic Channel. Archived from the original on 21 June Retrieved 21 June Medvedev, G. The Observer. Archived from the original on 30 August Retrieved 22 March Archived from the original on 19 March Archived from the original on 5 July Dit gebeurde midden in de nacht, toen de meeste inwoners van de nabijgelegen stad Pripjat sliepen.
Voor de ramp telde de stad ongeveer Vanwege de nog steeds grote aanwezigheid van radioactiviteit woont er nu vrijwel niemand meer.
De naam van de stad is verbonden met het ongeval op zaterdag 26 april met de centrale. Het was het zwaarste ongeval met een kerncentrale waarbij grote hoeveelheden radioactieve stoffen vrijkwamen.
Tot op de dag van vandaag zijn er in het gebied nog steeds grote gevolgen voor de volksgezondheid. Het was echter niet het eerste nucleaire ongeval in de Sovjet-Unie.
In de ochtend van 26 april werd in kernreactor nummer 4 van het complex een test uitgevoerd. Een test was eigenlijk voorzien voor de dagploeg daags voordien op 25 april , maar moest worden uitgesteld omdat een andere elektriciteitscentrale uitgevallen was.
Daarom moest de avondploeg, zonder voorbereiding, testen of de generator bij uitschakelen van de reactor nog genoeg vermogen gaf om de koelinstallatie te laten werken gedurende de 40 tot 60 seconden die de noodaggregaten nodig hadden om op te starten.
Door de snelle daling van het vermogen ontstond in de reactor een grote hoeveelheid jodium en daaruit xenon , dat neutronen absorbeert een zogeheten neutronengif en daardoor de kernreactie vertraagt.
De operatoren haalden daarop regelstaven omhoog. De test werd toch doorgezet, en op 26 april om uur schakelden de operatoren de waterpompen in.
Doordat water ook neutronen absorbeert, zakte het vermogen nog verder. De operatoren haalden hierop 20 van de 26 handbediende veiligheidsstaven omhoog.
Om uur sloten ze de stoom naar de turbines af. Doordat alleen draaiende turbines de pompen konden aandrijven, verminderde het water debiet en zo ook de absorptie van neutronen door het water.
De reactor werd heter en er ontstonden stoombelletjes doordat het water aan de kook raakte. Door deze belletjes nam de absorptie van neutronen verder af, waardoor het vermogen steeg.
Xenon werd sneller omgezet naar xenon dan het aangemaakt werd uit jodium Daardoor ging de reactor nog heviger werken. Doordat er nog maar zes van de voorgeschreven 26 veiligheidsstaven uit de reactor over waren, nam het vermogen alsmaar toe.
Om uur drukte een operator op knop AZ-5 voor een snelle noodstop, om alle regelstaven weer in de reactorkern te laten zakken. Door een verkeerd ontwerp van de regelstaven met een punt van grafiet werd eerst het water verdreven voor ze zelf een remmende invloed konden uitoefenen.
Hierdoor nam het vermogen in de onderste helft van de kern nog verder toe. Er volgde een explosie, waardoor de veiligheidsstaven klem kwamen te zitten op een derde van hun normale diepte.
De kettingreactie werd onvoldoende geremd, en het reactorvermogen nam zeer snel toe. De brandstofstaven smolten, en de druk steeg en veroorzaakte een stoomontploffing, die het ton zware dak van de reactor wegblies.
Door de binnenstromende lucht vlogen de hete moderatorelementen, die van grafiet waren gemaakt, in brand. De grafietbrand voerde een radioactieve rookwolk in de atmosfeer.
Bij de brand en de explosie kwamen 31 mensen om. De Sovjet-Unie bleef in eerste instantie zwijgen over de ramp.
De eerste melding van het ongeluk, op 27 april, kwam dan ook niet van de sovjetautoriteiten , maar van Zweedse onderzoekers. Deze fall-out van het ongeluk trok over een groot deel van Europa.
Er werd een graasverbod ingesteld om besmetting van melk te voorkomen. Tevens mocht net geoogste bladgroente niet verkocht worden.
Weerman Armand Pien mocht in zijn weerbericht niet zeggen hoe hoog de straling van de radioactieve wolk wel was. Volgens de Duitse stralingsbioloog Edmund Lengfelder werden ook in Duitsland grote delen van het land besmet.
Op 31 mei stelde hij dat als gevolg daarvan het wild nog steeds radioactief besmet was, en dat paddenstoelen uit het wild in die streken 25 jaar na de ramp nog steeds niet veilig konden worden gegeten.
Na de explosie in de reactor was de eerste zorg om de brand te blussen, die was ontstaan na de ontbranding van koolstofmonoxide.
Er was echter ook radioactief materiaal de omgeving in geworpen. In eerste instantie zette de Sovjet-Unie op afstand bestuurbare wagens in om het radioactieve puin op te ruimen, maar de te hoge straling maakte deze wagens onbruikbaar.
Hierdoor werden puinruimers liquidators ingezet, die niet langer dan veertig seconden mochten ruimen. Tijdens het puinruimen werden de liquidators aan een enorm hoge stralingsdosis blootgesteld.
Dit waren veelal dienstplichtige soldaten, die in die veertig seconden een hogere stralingsdosis opliepen dan een gemiddeld persoon in zijn hele leven.
Pas 33 uur na de ramp kwam de evacuatie van de directe omgeving op gang. Na tien dagen waren circa Ongeveer inwoners weigerden het gebied te verlaten.
Men beschouwt groenten en fruit uit het gebied nog steeds als ongeschikt voor menselijke consumptie vanwege de nog aanwezige radioactieve isotopen.
Nadat de brand geblust was en de grote brokken radioactief materiaal in de krater waren geworpen, werd reactor 4 ingepakt in een betonnen sarcofaag , die in november klaar was.
De overige drie reactoren werden na verloop van tijd weer in bedrijf gesteld. De bouw van reactor 5 en 6 werd in gestaakt.
De ramp bracht het imago van kernenergie een flinke klap toe. Na een ontmoeting met de Amerikaanse president Bill Clinton werd besloten de reactoren nog voor het begin van de winter van te sluiten.
Pas daarna is men overgegaan tot de sluiting van eenheden 1 en 3. De sarcofaag uit werd wegens de hoge stralingsniveaus in grote haast gebouwd en vertoonde al snel scheuren.
Daarom werd besloten om een betere sarcofaag over de oude heen te bouwen. De bouw hiervan ging begin maart van start. Het project kostte circa twee miljard euro en werd eind november afgerond.
Op 10 april werd een begin gemaakt met de ontmanteling van de drie centrales nummers 1, 2 en 3. In is het rapport  door de WHO uitgebracht.
Onder de Met name deze laatste schattingen zijn onnauwkeurig, omdat het merendeel van de extra doden ten gevolge van kanker, veroorzaakt door de ramp, te klein is ten opzichte van het aantal mensen dat sowieso zal overlijden aan kanker.