Occupational dose assessment of iodine intake at Australian Nuclear Science & Technology Organisation
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Date
2009-05-10
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Journal ISSN
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Publisher
Australian Nuclear Science and Technology Organisation
Abstract
The iodine activity taken up by thyroid is measured by a collimated 7.6x7.6cm NaI crystal, usually following an Iodine incident. To perform a dose assessment of the subject, the ICRP biokinetic retention model, given in ICRP54 publication, is applied to estimate the activity intake in thyroid and whole boy. The dose/activity conversion factors from ICRP68 are then applied to obtain the corresponding committed doses (effective & equivalent) of the subject. The 5um AMAD for inhalation route is applied in most cases. Follow up measurements are usually carried out when the Intake exceeds 5 kBq. The results are then compared with the predicted dose by the biokinetic model; adjustment to the model is applied to fit the measured data of individual (if required). The ICRP biokinetic model provides a satisfactory estimate to all encountered cases.
Description
Keywords
ANSTO, Iodine, Doses, Dose rates, Occupational exposure, Intake
Citation
Meriaty, H. (2009). Occupational dose assessment of iodine intake at Australian Nuclear Science & Technology Organisation. Poster presented to the 10th International Conference on the Health Effects of Incorporated Radionuclides, 10th - 14th May 2009. Santa Fe, New Mexico, United States of America: La Fonda Hotel.