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Radiation Protection Dosimetry 34:115-118 (1990)
© 1990 Oxford University Press
The IAEA Intercomparison for Individual Monitoring
In 1985 the International Commission on Radiation Units and Measurements introduced a new set of operational quantities for radiation protection purposes through Report 39. A significant amount of additional information about these quantities was presented at the end of 1988 in ICRU Report 43. The International Atomic Energy Agency has been concerned with the impact of possible adoption of these quantities by its 113 Member States. In an effort to assess the potential degree of impact, and to begin defining recommendations for calibration procedures using the new quantities, the Agency implemented a Coordinated Research Programme on Intercomparison for Individual Monitoring in 1987. The first phase completed with a Research Coordination meeting of the participants in April, 1989. Photon exposures were provided at 11 energies over a range from 18 KeV to 1.25 MeV at three standards laboratories in Austria, the GDR and the UK. Technical coordination was provided by the PTB, Braunschweig. Twenty one laboratories from 19 countries participated with film, TLD of various types, and combination dosemeters. Irradiations were performed on the IAEA 30 cm cubic, water-filled phantom that is in use throughout its network of 61 Secondary Standard Dosimetry Laboratories. Conversion coefficients for the IAEA phantom were calculated by the PTB and confirmed through measurements at ASMW in the GDR. Preliminary results indicated that the type of dosemeter (film or TLD) had little effect on the quality of results. The most important factor appears to be the specific techniques used for data interpretation.