[en] The medical radiation control in Kozloduy NPP is organized in two levels: permanent (current) monthly control in the strictly controlled area and the NPP stage, and periodical control of working conditions, the personnel radiation burden and the technical equipment. The analysis show that the radiation conditions in the Kozloduy NPP are in the established permissible levels. The disturbances recorded are most often connected with an infringement of the rules for handling radioactive substances. For the period 1974 - 1991 a total of 204 persons have received radiation doses above the permissible annual individual dose of 50 mSv. The normal NPP operation does not influence environment and population in a detectable extent. (A.B.)