Assessment of effective doses from radon levels for tour guides at several galleries of Santana Cave, Southern Brazil, with CR-39 detectors: preliminary results

Abstract

Indoor radon concentrations have been measured in Santana cave, the most frequented cave of PETAR (High Ribeira River Tourist State Park), situated southern of Sao Paulo State, Brazil. The measurements were carried out with CR-39 detectors installed in four of the most frequently visited galleries. Preliminary results from November 2009 to June 2010 show radon concentrations varying from 1.9 ± 0.1 to 8.4 ± 0.6 kBq m(-3). The total annual effective dose for all galleries was 3.32 mSv. The complete evaluation will be concluded by September 2010.

Radon (222Rn) concentrations in the touristic Jumandy cave in the Amazon region of Ecuador

“…Low concentrations were registered during the dry season (July–August) and high concentrations during the wet season (October). The peak concentrations of this study compare well with the radiation levels in other countries ([ 1 ], [ 2 ], [ 6 ], [ 8 ]). Whereas most of the studies are reported from Europe and Australia, at this time there is a very limited number of research studies on 222 Rn levels in South America.…”

Radiation Hazards Due to Radon Concentrations in Dwellings of Kufa Technical Institute, 'Iraq'

“…In addition to, the annual equivalent dose was calculated using the following Equation (ICRP, 2011;Mossadegh et al, 2011;Issa, 2007;Alberigi et al, 2011;Obed et al, 2012):…”

Radon Concentrations Measurement in Dwellings of Kufa Technical Institute, Iraq Using LR-115 Nuclear Track Detector

“…The weighting factor that used in this study is 0.12 [30,31]. The annual equivalent dose was then calculated using the following equation [32].…”