THE INFLUENCE OF THE RADON VARIABILITY ON DOSE ASSESSMENT

VLADIMIR UDOVIČIĆ1, ALEKSANDAR DRAGIĆ1, RADOMIR BANJANAC1, DEJAN JOKOVIĆ1, BOJANA

GRABEŽ1, JELENA FILIPOVIĆ2, ZORA S. ŽUNIĆ2

1Institute of Physics, University of Belgrade, Serbia udovicic@ipb.ac.rs

2Institute of Nuclear Sciences “Vinča”, ECE LAB, University of Belgrade, Serbia, ecelab@vinca.rs

MOTIVATION

INDOOR RADON CONCENTRATION

(Bqm-3)

ANNUAL RADON DOSE ASSESSMENTS

(mSv)

MODELS:

- Epidemiological assessments (ICRP)

- Physical dosimetry (UNSCEAR)

Short-term measurements:

- This type of measurements are performed with much more complex and expensive passive or active (pump air sampling) continuous measuring devices.

- Temporal distribution

Long-term measurements:

- Passive integrated measuring devices based on the nuclear track detectors, which is due to their low cost, simplicity and characteristics have ability to collect information from a large number of the measurement points at the same time.

- Spatial distribution

RADON MEASUREMENTS

SHORT-TERM RADON MEASUREMENTS

RESULTS:

Indoor radon measurements performed in the August and September for the three days in the living room

SHORT-TERM RADON MEASUREMENTS

RESULTS:

Indoor radon measurements performed in the August and September for the three days in the bedroom

Month

Living roomMean/Averaged from 16 to 24 hours

BedroomMean/Averaged from 24 to 08 hours

August 50.50/58.71 64.96/58.98

September

150.05/66.26210.74/278.48

SHORT-TERM RADON MEASUREMENTS

RESULTS:

CONCLUSIONS

-The results presented in this work show that it is difficult to estimate the annual radon concentration due to the very complex indoor radon behavior. This task is not trivial and mostly influenced by the radon variability.

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