1. EXPERIMENTAL RESEARCH OF MITIGATION SYSTEMS FOR CONTROLLING AND REDUCING RADON EXPOSURE IN RESIDENTIAL BUILDINGS

. This article presents the results of implementing a series of methods to mitigate the increased level of radon in multiple existing homes. The subject of this study is represented by techniques and systems to be implemented in pilot houses. From the 1000 house 100 houses from Cluj, Iași, Sibiu, Timiș and Bucharest were selected for monitoring purposes. From these, only 10 were chosen for mitigation. The remediation techniques applied to these pilot houses were active / passive depressurization, local ventilation with heat recovery, centralized ventilation system with heat recovery and installation of a membrane resistant to radon dispersion. In this article one house from Timisoara, and another one from Cluj, were deeply described. The mitigation of the radon level was up to 90% compared to the level measured a year ago.

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