Risk assessment due to inhalation of radon in Coorg district, Karnataka

摘要

The paper deals with study of seasonal variation of outdoor and indoor radon in Somwarpet taluk, Coorg district using pin-hole dosimeter cups and LR-115(type II) films. The LR-115 films, placed in dosimeter cups with pin-holes, were exposed to radon in different seasons of the year. The annual inhalation dose due to outdoor and indoor radon ranges from 0.036 to 0.068 mSv year(-1) and 0.53 to 0.75 mSv year(-1) respectively. The radon levels are low, due to blocking of radon atoms in porespaces of porous soil, due to rainfall in all seasons.