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Radiation Protection Dosimetry 56:19-20 (1994)
© 1994 Oxford University Press

Implementation of Reduction Techniques for High Radon Concentration in a Dwelling House

P. Jovanovic and M. Kanduc

The remedial measures for a dwelling house constructed on clay ground are described. The main source of high radon concentrations is a non-ventilated cellar (bunker) having a non-insulated floor. The higher measured concentration of radon and its daughters in the cellar exceeded 20,000 Bq.m-3 or 3 WL, and in the living room 3000 Bq.m-3 or 0.5 WL. The cellar floor has been insulated with a concrete floor layer, bitumen emulsion and with polyvinyl foil and the wall cracks have been sealed up. By insulating the floor, the radon concentrations have been reduced by 20%. The ventilation of the cellar has been secured by means of built in tubes (diam. 10 cm) leading from the cellar onto the roof. This the radon concentrations have been additionally reduced, in the winter period, through a natural convention up to 10 times (in the cellar to 2000 Bq.m-3 and in the living room 200 Bq.m-3). Detailed follow-up measurements of radon concentrations will be performed to determine whether forced ventilation should be provided.


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N. M. Rahman and B. L. Tracy
Radon control systems in existing and new construction: a review
Radiat Prot Dosimetry, August 1, 2009; 135(4): 243 - 255.
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