METHODOLGY FOR RADON PRESENCE INVESTIGATION IN MINE GALLERIES. CASE STUDY: BAITA BIHOR REPOSITORY

Radon brings an important contribution to natural radiation dose received by population. This contribution rises, in certain areas, up to a level of 90 to 95% leading to an exposure to natural radiation a lot higher than normal. People working in mining facilities or other closed areas with high radon concentration are exposing themselves to a very high dose of radiation in some cases this dose being 10 times higher than normal. This paper addresses the problem of determining radon accumulation in Repository galleries at Baita Bihor using a special device. The device used has two determination methodologies, each one of them having their benefits and limitations. Using an extended set of experimental sessions and sampling point's variations of radon concentration analysis will be one, outlining the best methodology for radon determination, considering also the gallery structural and use properties. It will also consider other parameters that have a direct implication in the variation of the concentration of radon in the mine galleries. We will measure also the atmospheric parameters such as pressure, temperature, relative humidity and we will observe radon concentration based on their variation.