Radioaktyviųjų medžiagų specialiojo punkto aplinkos dozimetriniai ir radiometriniai tyrimai

Abstract

Compare results of the dosimetric researches in nineteen ninety four and in two thousand and one we see that the power of equivalent dose of the pile and it territory in the air near the ground differs slight, in all points of measurement. It changes from 4,05 uR h (36,5 nSv/h) to 8,92 μR/h (80,3 nSv h). Moveing away from the pile, power of equivalent dose diminishes slight. In nvo thousand and one disinctive activity of137 Cs in 0-5 cm deep layer of the soil, compare with nineteen ninety seven, was bigger. Maybe it is so because samples were taken not from the same place. In the soil of environment of the pile 137Cs superficies activity density mean (1373 Bq m~) is bigger than in majority unpolluted places of Lithuania (310 Bq/m2), but it maximum value (4560 Bq/m2) is smaller than in unpolluted places of Lithuania (8430 Bq/m2). In the ground water of the fourth and fifth boreholes about ten years already is considerable increase of volumetric activity of the 3H (maximum value was established in nineteen ninety eight - 23900 Bq/l).