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ARTÍCULO
TITULO

Estimates of the dose of radon and its progeny inhaled inside buildings

Purushothama Ravikumar    
Rayasamudra Kalegowda Somashekar    

Resumen

The concentration of radon in the air in buildings ranged from 1.87 ± 3.24 Bq/m3 to 14.27 ± 1.50 Bq/m3 with a mean of 6.31 ± 3.47 Bq/m3 while that of the progeny of radon varied from 0.007 to 0.057 WL (average: 0.025). The mean indoor concentration of radon was considerably less than the lower levels prescribed by EPA (148 Bq/m3), WHO (100 Bq/m3), EEC (400 Bq/m3), ICRP (200?600 Bq/m3) and NRPB (200 Bq/m3). The annual effective equivalent dose of indoor radon (< 0.8 mSv/y) that the bronchial and pulmonary regions of human lungs are exposed to (<0.8 mSv/y) is less than the UNSCEAR and WHO recommended global lower average dose value of 1 mSv/y. The lifetime fatality risk of exposure to the progeny of radon (PAEC) varied from 0.03 × 10-4 to 0.19 × 10-4, with an average value of 0.08 ± 0.04 × 10-4.

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