External occupational exposures in some NORMindustries located at the South-West of Spain

摘要

Detailed mappings of the external exposures which can be received by the workers intwo NORM industrial factories located at the South-West of Spain have been performed: onedevoted to the production of phosphoric acid, and the other devoted to the production of titaniumdioxide pigments. In most places of the analyzed factories, the external exposures are moderated,although in some specific points, and associated to the presence of scales, their values are clearlyhigher. Nevertheless, under normal running conditions, the contribution of the external exposuresto the effective doses received by the workers is lower than 1 mSv/y because the workeroccupancy factors values are very low in the places with the highest external exposures.