Open AccessMEASUREMENT OF GAMMA DOSE RATE IN HOSPITALS FOR REHABILITATION IN BULGARIA
Author(s) -
Desislava Djunakova,
Bistra Kunovska,
Nina Chobanova,
Jana Djounova,
Kremena Ivanova,
Zdenka Stojanovska
Publication year - 2021
Publication title -
contemporary materials
Language(s) - English
Resource type - Journals
eISSN - 1986-8677
pISSN - 1986-8669
DOI - 10.7251/comen2101026d
Subject(s) - radon , effective dose (radiation) , environmental science , dose rate , nuclear medicine , statistics , mathematics , materials science , medicine , physics , nuclear physics , medical physics
The objective of this study was to evaluate the indoor gamma dose rate in 17 inspected hospitals for rehabilitation where the radon measurements were conducted and to give a more comprehensive evaluation of the total exposure dose. The gamma dose rate in the air was measured in 355 rooms in 17 inspected hospitals for rehabilitation on the territory of Bulgaria. The maximum parameter value was 0.390 μSv/h and the minimum value was 0.06 μSv/h with the 0.157 μSv/h arithmetic mean (standard deviation - 0.160). The gamma dose rate was within the natural variations of the parameter in buildings. Direct measurements of radon were conducted, and the results ranged from 12 Bq/m3 to 3920 Bq/m3. The relationship between the two parameters was examined. A weak correlation between gamma dose rate and indoor radon concentration was found. The measurement of a gamma dose rate could be a useful parameter for carrying out radon workplace control.