Radiation protection activities in the Institute of Nuclear Research and Nuclear Energy, Sofia (BG)

The methods for general and individual radiation monitoring applied in the Institute are described. The following data for the period 1962-1992 are discussed: 1) The maximum annual dose absorbed by some staff members does not exceed 40% of the maximum annual permissible dose. 2) The bulk of the personnel have received up to 10% of the maximum annual permissible dose. 3) There are no total radiation burden which exceed the maximum permissible doses for the respective age. These data show that in the course of the whole period of operation of IRT-2000 research reactor and active work with ionizing radiation sources, the ALARA principle has played a leading role in the radiation protection practices of the personnel. (author)