THE INTERPRETATION OF BIOASSAY AND INVIVO DATA USING THE PROPOSED ICRP LUNG MODEL AND A EUROPEAN REGISTRY OF INTERNAL DOSE ASSESSMENTS, MODELS AND AUTOPSY DATA

The Harwell Approved Dosimetry Services have produced assessments of intakes by workers for a wide range of radionuclides including tritium, mixed fission products, uranium, thorium, plutonium, americium, curium and californium. The current assessments are based upon ICRP 30, JCRP 48 and ICRP 54, but the results will be compared with the new lung model and the new draft recommendations of ICRP, 1990, to consider the implications of the changes. The European dosimetry committee, Eurados-Cendos has set up a working group to study the assessment of internal dose. The group has organised an intercomparison of dose assessments for a variety of nuclides and conditions and has just obtained a study contract to evaluate the feasibility of establishing European Registries of internal dose assessments, models and autopsy data. The main aim is to produce a common database within Europe with compatibility with the US databases as far as is possible. The group also hopes to assist in the exchange of information, particularly in the assessment of unusual intakes, and to improve models used in such assessments.