engleski

Radon in karstic region school: Concentrations in soil gas and indoors

The school presented in paper exceeded instantaneous indoor radon concentration of 1000 Bqm-3, obtained within the Slovene radon programme. Thus, additional measurements were performed and the radiation doses of teacher and pupils estimated. Radon concentrations between 1000 and 3000 Bqm-3 during teaching hours were found and the yearly effective doses from 0.75 to 1.1 mSv for the pupils and from 1..1 to 4.2 mSv for the teachers were calculated. In the soil gas radon and thoron concentrations ranging from 70 to 150 k Bqm-3 were obtained. The school was mitigated during summer 1998.

Radon; karst; soil gas; indoors

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