Abstract
Indoor radon-222 activity levels, effective radium content and annual effective dose at Jazan University in Jazan, Saudi Arabia are given for a variety of indoor sites (Research Laboratories, Computer Laboratories, Physics Laboratories, Chemistry Laboratories, Cafeteria and Biology Laboratory). A sealed-can technique based on the CR-39 nuclear tracks detector was used to monitor the radon gas study. In all sites in the study region, the obtained results suggest acceptable levels of indoor radon concentration and effective radium content. In computer laboratories, chemistry laboratories, and cafeterias radon contributes a significant amount to the total effective dose.
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