Pages: 317-323

Authors: Tetiana Pavlenko, Olga German, Nikolay Aksenov, Miroslava Fryzyuk,
and Anatoliy Operchuk

Abstract

This article provides a review of radon remediation methods and an algorithm of their applications. The methods assessed are applicable for indoor radon originating from the ground beneath or around a building. It was established that radon activity concentration in underlying soil or ground ranging between 15 and 30 kBqm^-3 would contribute to an average annual indoor  radon  concentration  from  20  Bqm^-3  reaching  up  to  1030  Bqm^-3  in  the  region, i. e.,  a  10-15  fold  difference,  while  the  average radium concentration in soil was assessed as 30 Bqkg^-1. The geo-morphological analysis in the investigated region classifies the top soil as very permeable, containing huge volumes of soil air which is easily transported with the temperature and pressure gradient. It was demonstrated that both soil characteristics and construction characteristics must be taken into account when designing radon remediation methods.
One hundred eighty nine buildings were investigated, remediated, and assessed as part of this research work. The average remediation efficiency was established as 50 %. The paper provides an overview of recommended remedial actions and most common mistakes made by construction experts influencing the efficiency of radon remediation.

Key words: radon, remediation, efficiency

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