Occupational Intakes of Radionuclides Part 1 - ICRP
Occupational Intakes of Radionuclides Part 1 - ICRP
Occupational Intakes of Radionuclides Part 1 - ICRP
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DRAFT REPORT FOR CONSULTATION<br />
chemical form. It also stresses the need for any assessment to be proportionate to the<br />
expected exposure. It discusses the requirements for an effective monitoring<br />
programme and summarises approaches to data handling for single or multiple<br />
measurements. Uncertainties associated with the use <strong>of</strong> biokinetic models for the<br />
interpretation <strong>of</strong> the results <strong>of</strong> bioassay measurements are considered.<br />
(50) Chapter 7 provides a brief outline <strong>of</strong> the types <strong>of</strong> information included in<br />
subsequent parts <strong>of</strong> this series <strong>of</strong> reports: biokinetic data, dose coefficients and data<br />
for bioassay interpretation for individual elements and their radioisotopes. Each<br />
element section provides tables <strong>of</strong> dose coefficients (committed effective dose, Sv per<br />
Bq intake) for inhalation and ingestion <strong>of</strong> all relevant radioisotopes and tables <strong>of</strong><br />
bioassay data, giving values <strong>of</strong> activity (Bq) retained in the body or specific organs, or<br />
excreted in urine or faeces, at various times after unit intake by inhalation or ingestion<br />
(i.e. 1 Bq). The bioassay data are also presented in graphical form. In addition tables<br />
are provided <strong>of</strong> committed effective dose (Sv) per unit activity measurements (Bq). In<br />
cases for which sufficient information is available (principally for actinide elements),<br />
lung absorption is specified for different chemical forms and dose coefficients and<br />
bioassay data are calculated accordingly.<br />
(51) The CD-ROMs that accompany this series <strong>of</strong> reports contain a comprehensive<br />
set <strong>of</strong> dose coefficients, dose per unit content (DPUC) values, and bioassay functions<br />
for a range <strong>of</strong> physico-chemical forms and aerosol AMADs. (The printed reports in<br />
this series contain data only for the 5 µm AMAD default). In addition to the data in<br />
the printed reports, the CD-ROMs provide values for activity retained in the body and<br />
daily excretion after unit intake, DPUC values, and reference bioassay functions<br />
tabulated at additional times after intake. The dose coefficients and other<br />
radionuclide-specific data are provided as a set <strong>of</strong> data files which may be accessed by<br />
the user directly or by using the accompanying Data Viewer. The Viewer permits<br />
rapid navigation <strong>of</strong> the dataset and visualisation <strong>of</strong> the data in tabulated and graphical<br />
formats, such as graphs <strong>of</strong> the time series <strong>of</strong> DPUC values or predicted activity<br />
content per unit dose (Bq Sv –1 ) as a function <strong>of</strong> time after intake. Graphical<br />
presentations <strong>of</strong> decay chains and nuclear decay data from Publication 107 (<strong>ICRP</strong>,<br />
2008) are also included.<br />
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