Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10686922 | Journal of Environmental Radioactivity | 2005 | 14 Pages |
Abstract
In this work, we present the values of radon concentration, measured by continuous monitoring during a complete annual cycle in the Polychromes Hall of Altamira Cave in order to undertake more precise calculations of annual effective dose for guides and visitors in tourist caves. The 222Rn levels monitored inside the cave ranges from 186 Bq mâ3 to 7120 Bq mâ3, with an annual average of 3562 Bq mâ3. In order to more accurately estimate effective dose we use three scenarios with different equilibrium factors (F=0.5, 0.7 and 1.0) together with different dose conversion factors proposed in the literature. Neither effective dose exceeds international recommendations. Moreover, with an automatic radon monitoring system the time remaining to reach the maximum annual dose recommended could be automatically updated.
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Authors
J. Lario, S. Sánchez-Moral, J.C. Cañaveras, S. Cuezva, V. Soler,