earticle

영어

To ensure the performance of radon detectors, three passive radon detectors (RadTrak®, Radopot®, and E-PERM®) have beenreviewed. The difference ratios of RadTrak and Radopot tested in the radon standard chamber were -13.2% and -6.0%, respectively,which were in good accordance within 20% of the value measured by AlphaGUARD®. To ensure the performance of the long termmeasurement, the 3 detectors were installed at the same position of approximately one hundred of dwellings for one year. Thecorrelation curve between RadTrak and Radopot shows good agreement with a correlation coefficient (R2) of 0.91. However, Thecorrelation curve between E-PERM and Radopot shows bad agreement (R2= 0.021). In addition, the distribution map of annual meanindoor gamma dose rate measured with E-PERM was not in accordance with the distribution map of outdoor gamma dose ratemeasured by Portable Ion Chamber. According to the results, some requisites for the selection of the radon passive detectors in thelarge-scale indoor radon survey were discussed.