Abstract

ESPINOSA, G.; GOLZARRI, J.I.; LOPEZ, K.  and  RICKARDS, J.. Long term indoor radon measurements in the pelletron laboratory at the UNAM physics institute. Rev. mex. fis. [online]. 2011, vol.57, suppl.1, pp.50-54. ISSN 0035-001X.

The results of six months of continuous measurement of the indoor radon concentration levels in the building where the Instituto de Física 3 MV Pelletron particle accelerator is located are presented. This study has three major objectives: (a) to know the actual values of the levels of indoor radon in this installation, where personnel spend many hours and sometimes days; (b) assess the radiological risk from radon inhalation for personnel working permanently in the laboratory, as well as incidental users; and (c) establish, if necessary, time limits for continuous permanence on the location for indoor radon exposure. Passive nuclear track detectors and dynamic systems were employed, covering six months (August, 2009 to January, 2010). For the calculation of internal dose the "Radon Individual Dose Calculator" was used. The results indicate that the indoor radon levels are below the USEPA recommended levels (400 Bq/m³) in workplaces. The measurements help to establish levels for workplaces in México.

Keywords : Indoor radon; radon; workplaces; risk; pelletron.

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