INVESTIGATION AND REMEDIATION OF HOUSES AFFECTED BY RADON PHENOMENA CONNECTED WITH EARLIER EXPLORATION OF SILVER AND URANIUM ORE

摘要

The sources of gamma radiation inside buildings affected by earlier silver and uranium mining activities are discussed. Possibilities how to reduce gamma dose rates from building materials were studied on several houses located in the old mining town Jachymov. Results of the efficiency analysis are presented. Experience obtained up to now indicates that it is almost impossible to reduce the gamma dose rates in such buildings to the level corresponding with the natural background, because some of the gamma radiation sources cannot be completely removed from the building structures.