Occupational Intakes of Radionuclides Part 1 - ICRP

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DRAFT REPORT FOR CONSULTATION
Occupational Intakes of Radionuclides
Part 1
ICRP Publication XXX
Approved by the Commission in XXX
Abstract- This report is the first in a series of documents replacing the Publication 30
series and Publication 68 to provide revised dose coefficients for occupational intakes of
radionuclides (OIR) by inhalation and ingestion. The revised dose coefficients have been
calculated using the Publication 100 Human Alimentary Tract Model (HATM) and a
revision of the Publication 66 Human Respiratory Tract Model (HRTM) which takes
account of more recent data. In addition, information has been provided on absorption to
blood following inhalation and ingestion of different chemical forms of elements and
their radioisotopes, in those cases for which it is judged that the data are sufficient to
make specific recommendations. Revisions have been made to many models for the
systemic biokinetics of radionuclides absorbed to blood, making them more
physiologically realistic representations of uptake and retention in organs and tissues and
of excretion.
The reports in this series provide data for the interpretation of bioassay measurements as
well as giving dose coefficients, replacing Publications 54 and 78. In assessing bioassay
data such as measurements of whole-body or organ content or urinary excretion,
assumptions have to be made about the exposure scenario, including the pattern and
mode of radionuclide intake, physical and chemical characteristics of the material
involved and the elapsed time between the exposure(s) and measurement. This report
provides some guidance on monitoring programmes and data interpretation.
Keywords: Occupational exposure, Internal Dose Assessment, Biokinetic and Dosimetric
models, Bioassays interpretation.
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