Monitoring of Indoor Radon Concentration in Some Elementary and Secondary Schools of Kosovo

Abstract

Measurements of radon concentration were carried out at indoor air of 30 elementary and secondary schools in Kosovo. The aim of this study was to know the level of indoor radon concentration in these locations and to enhance the national radon survey. The main method for indoor radon measurement was direct sampling in alpha scintillation cells and continuous monitoring during some days. However, in cases with an increased instantaneous and continuous radon concentration the additional method of track-etech detectors were applied. The radon concentration was measured to be from 35 Bq m-3 to 814 Bq m-3and the annual effective doses was calculated to be from 0,28 mSv year-1 to 6,47 mSv year-1. In most of the schools the concentration and annual effective doses for students and teachers exceeded the limit of ICRP recommendations but in three of them the concentration and annual effective doses are higher.