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Study of radon concentration in private and/or public buildings in the west (mountainous) region of the Chania Prefecture

Simantirakis Apollon

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Summary

The gas "radon" is a natural source of radiation that human beings receive in their everyday life. Βuilding materials are among the sources of radioactive gas “radon” which result that radon concentrations can be found at indoor places and homes as well. For several years, the attention of many scientists worldwide focused on the issue of indoor exposure to radon in buildings. The Radioactivity Environmental Monitoring Group (REM group) of the European Commission's Joint Research Center began to search radioactive radon gas in the interior of European homes in 2005. Although this work has already been done to indoors radon concentrations in Greece, it should be repeated in time and new places. The main concern about the presence of radon indoors buildings cover the direct effects on the human body, as it may cause serious illnesses. In the present study, radon concentration in residential buildings (public and private) is examined in the west (mountainous) area of ​​the prefecture of Chania. This study describes extensively, through a bibliographic overview, the phenomenon of radioactive gas "radon", its natural sources, methods of air release and diffusion, measurement techniques, exposure hazards, removal procedures, methods for mitigation and prevention of buildings interior, the regulations in Greece and abroad and measurement results from several cities in Greece. The geological and geomorphological characteristics of the west mountainous investigated area are also described. Radon concentration measurements were performed to 16 buildings using passive Solid State Nuclear Track Detectors (CR-39). The grant of the detectors and their processing was done by the Environmental Radiation Control Department of the Hellenic Atomic Energy Commission. Finally, the results of random concentration measurement for the selected areas are presented in detail. Through these results, the survey aims at both estimating the risk in these buildings by calculating the active radiation dose (Eeff) and detecting the parameters which contribute to the calculable radon levels in the buildings of the investigating area. These data will lead us to draw the final conclusions.

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