Declassified KGB documents reveal that the Chornobyl catastrophe was no accident: it was a tragedy, years in the making.
A set of recently declassified documents concerning the 1986 disaster at Chornobyl have been put on UNESCO's Memory of the World Program, where the documents are now registered and filed, according to Andrii Kohut, Director of the Office of State Archives of the Department of the Security Service of Ukraine (SBU). Director Kohut explained to RFE/RL how the documents were selected and what exactly was in them.

The documents were selected on the basis of their content and how thorough the descriptions are. The first document, dated 1973, is a staff report listing the violations of the building codes during the construction of the Chornobyl Nuclear Power Plant. What is extremely important, the documents reveal the carelessness and disregard for safety the communist regime displayed not only in green-lighting the substandard project but in the construction of the plant, too. It could be argued that the explosion had been preset because of the shoddy work and devil-may-care attitude."The explosion took place on 26 April 1986, in the 4th unit of Chornobyl NPP, and affected numerous countries. The archives related to the accident, created in the Soviet Union and now declassified by Ukraine, are crucial for the understanding of its nature and its socio-political impact. The archive covers many aspects of the Chornobyl NPP such as its building and development, the accident’s initial handling and the aftermath. The collection is housed in the State Archives of Ukraine and is made available to the public," reads the collection's summary on the page of the UNESCO's Memory of the World Registry.
The design itself was problematic. It was one of the first nuclear power plants where the skeleton of the reactor was not molded entirely from concrete. As well, the concrete used was of inferior quality, not the required brand. The pouring of the concrete was not up to specs, either; there were cracks and gaps between the blocks. This is what led to the collapse of the covering. This information is in the reports which the KGB wrote primarily for the Central Committee of the Communist Party.A number of malfunctions and violations had been recorded before 1986
Another batch of documents deals with the explosion itself. There is a wide range of documents reflecting the information the KGB had submitted to the leaders of the country, for example, that"The Chornobyl NPP disaster was, unfortunately, programmed long before 1986," says Andrii Kohut.
high doses of radiation had been discovered on a vehicle near Kyiv and on the costumes of the children who had participated in the May Day parade (pictured below).

The collection of the 32 declassified documents on the Chornobyl NPP disaster can be accessed on the website of the E-Archive of the Ukrainian Liberation Movement. Unfortunately, only the Russian-language originals are available as of now.
Read more:
- Chornobyl destroyed the Soviet Union
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- Meet the Ukrainians who returned to live in Chornobyl
- Ukrainian banks, enterprises, media and energy companies under powerful cyber attack, including Chornobyl NPP
- Rare animal and bird species return to Chornobyl after 30 years of abandonment
- Chornobyl Exclusion Zone to be Home to Safe Solar Power
- Slavutych: the town born from the Chornobyl nuclear disaster
- Chornobyl: the secret tragedy which led to the collapse of the Soviet Union
- The Chornobyl Dictionary: Too Hot to Hide
- Nature takes over Ukraine’s Chornobyl exclusion zone


