【摘 要】
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Trying to cover a gap in the open literature,occupational exposures and activity concentrations have been assessed in two NORM industrial plants devoted to
【机 构】
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Department of Applied Physics,University of Huelva,Campus E1 Carmen,21071,Huelva,Spain
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Trying to cover a gap in the open literature,occupational exposures and activity concentrations have been assessed in two NORM industrial plants devoted to the production of mono-ammonium phosphate (MAP) and di-ammonium phosphate (DAP) fertilizers,located at the South-West of Spain.The annual effective doses received by the workers from these plants are clearly below I mSv/year,and the contribution due to external radiation is similar to that due to inhalation.The contribution to the maximum effective doses due to inhalation of particulate matter has been estimated to be about 0.12 mSv/year,while the 222Rn concentrations inside the plants are of no concern.Consequently,no additional actions or radiological protection measures need to be taken to decrease the natural radiation received by the workers in these facilities.
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