Comparison of various methods of estimating radon dose at underground workplaces in wineries.

Levels of radon were surveyed in the air at underground workplaces of eight major Slovenian wineries. Geometric mean and geometric standard deviation values, respectively, obtained with different devices were 81 Bq m(-3) and 2.3 with alpha scintillation cells, 114 Bq m(-3) and 2.0 by exposing etched track detectors for 1-5 months, and 183 Bq m(-3) and 2.6 from 1-4-weeks continuous measurements. The equilibrium factor was 0.25-0.67, and the unattached fraction of radon short-lived decay products was in the range 0.09-0.20. Effective doses were calculated and compared based on radon data obtained with different techniques.