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Digital Archive International History Declassified

July 28, 1986

LIST OF INFORMATION SUBJECT TO CLASSIFICATION CONCERNING QUESTIONS ASSOCIATED WITH THE ACCIDENT AT UNIT Nº 4 OF THE CHERNOBYL AEHS (CHAEHS)

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    An archival summary of the level of secrecy attached to various types of information about the Chernobyl NPP accident, the vast majority of which are classified as "Secret."
    "List of Information Subject to Classification concerning Questions Associated with the Accident at Unit Nº 4 of the Chernobyl AEhS (ChAEhS) ," July 28, 1986, History and Public Policy Program Digital Archive, Archive of the Ukrainian National Chornobyl Museum. Contributed by Anna Korolevska and Adam Higginbotham. Originally obtained from the Archive of the State Committee for Hydrometeorology of Ukraine. Translated by Gary Goldberg. https://digitalarchive.wilsoncenter.org/document/208415
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[faded stamp:

15s

28 July 1986]

Secret

Copy Nº 3

LIST

of information subject to classification concerning questions associated with the accident at unit Nº 4 of the Chernobyl' AEhS (ChAEhS)

1. Information revealing the true reasons for the accident at ChAEhS unit Nº 4.

Secret

2. Complete information about the nature of the destruction and the amount of damage to the equipment and power unit systems and the AEhS.

For official use

3. Information about the size and composition of the mixture discharged during the accident.

Secret

4. Summary information about the radiation situation containing a description of the contamination at AEhS premises in the 30-km zone.

Secret

5. Information about the results of individual measurements of the radiation situation and the isotope composition of the soil, water, etc.

For official use

the same information about the country, republic, [or] oblast' on the whole

Secret

6. Information plotted on topographical maps about the radiation situation by areas of contamination.

Secret

7. Summary information about the scale of the decontamination work to eliminate the consequences of the accident, and also the work to bury the dangerous radioactive elements.

Secret

[faded stamp at the bottom of the first and pages:

USSR ___dromet 3277ye-86]

8. Information about the sanitary and hygienic assessment of the systems to collect, reprocess, neutralize, and bury dangerous radioactive elements.

Secret

9. Information about new effective means and methods of decontamination.

Secret

10. Information about the actual state of the reactor core revealing the possibility of the penetration of heat-emitting fragments under the base plate, radioactivity getting into aquifers, dangerous emissions of radionuclides into the environment, etc.

Secret

11. Summary information about the radioactive contamination of the natural environment, food products, and feed exceeding permissible concentrations.

Secret

12. Information about the degree of injury to people at the AEhS in combination with information about the nature of their activity and the specifics of the accident.

Secret

13. Summary information about the exposure of the station personnel, the repair personnel of the organizations involved, and the population.

Secret

14. Generalized information about the morbidity of all the forms of radiation sickness of people subjected to the effect during the accident and elimination of its consequences.

Secret

15. Information about mass poisoning and epidemic diseases associated with the accident.

Secret

16. Information about the results of the treatment of radiation sickness with new methods or means.

Secret

17. Information about the results of medical and preventive measures associated with the accident.

Secret

18. Summary information about the ecological assessments of the consequences of the accident.

Secret

19. Information revealing the specific technical decisions concerning the shutdown of ChAEhS unit Nº 4, and also information about repair work at units NºNº 1, 2, and 3.

For official use (until a decision about open publication)

20. Information revealing planning or reported data about the amounts of the state capital investments for the shutdown unit Nº 4 of the ChAEhS.

Secret

21. Information revealing planning or reported data about the volume of construction and installation work concerning state capital investments for the shutdown of unit Nº 4 of the ChAEhS.

Secret

22. Summary information describing the status of the construction and installation work to shut down unit Nº 4 of the ChAEhS.

Secret

23. Information about the gross payroll concerning contracting activity in capital construction of Construction Directorate Nº 605.

Secret

24. Summary information about the number of workers for Construction Directorate Nº 605.

Secret

25. Information about the number of workers recruited to work in conditions of an increased level of radiation exposure.

Secret

26. Summary information about the designations of organizations, their departmental affiliation, and the number of workers recruited to work to eliminate the consequences of the accident.

Secret

Nº 136/II-769

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