35-year experience in the functioning of the National Radiation and Epidemiological Registry as a State information system for monitoring the radiological consequences of the Chernobyl accident

Thirty five years ago, the All-Union Distributed Registry of Persons Exposed to Radiation as a re-sult of the accident at the Chernobyl Nuclear power plant (Chernobyl Registry) was created. The Computing Center of the Research Institute of Medical Radiology of the USSR Academy of Sci-ences (Obninsk) became the core of the Chernobyl Registry. Their contribution to the creation of the registry was made by all former Soviet republics. Currently, the registry is called the National Radiation and Epidemiological Register (NRER), which is a state information system for personal data of Russian citizens exposed to radiation as a result of radiation accidents and incidents. The NRER is a multi-level system consisting of 85 regional segments in subjects of Russian Federa-tion and 4 departmental sub-registries. Currently, the NRER stores information about 811 thou-sand people, of which 751 thousand people represent the so-called “Chernobyl contingent”. The article presents the description of regulatory framework, organizational structure and technologi-cal approaches to the management of NRER. The article also describes the specific elements and subsystems of the registry that ensure the effective functioning of the NRER system for many years. The final part of the article presents the main results of research on the assessment of the radiological consequences of the Chernobyl disaster, obtained on the basis of the analysis of da-ta accumulated in the NRER for the period 1986-2020.