PERSONAL DOSIMETER INTERCOMPARISONS AS INDEXES OF PERFORMANCE - A QUALITY ASSURANCE PROCEDURE

This Centre participated in four intercomparisons for personal dosemet ers conducted independently by IAEA/RCA, Japan and Australian Radiatio n Laboratory (ARL), Victoria using CaSO4:Dy Teflon disc-based personal monitoring TLD badges. The irradiations were performed by the organis ers free-in-air as well as on the surface of water and PMMA equivalent composite phantoms. The performance of our personal dosemeters in the se intercomparisons was analysed using ANSI-N13.11-1983 criteria for t esting the performance of personal dosimetry. The tolerance level, L, was lower than the limiting value of 0.5 for all the intercomparisons. The results were also analysed using trumpet curve analysis which inc orporates the accuracy requirements of ICRP-35 and ICRP-60. The doseme ter quotients (measured dose/conventional true dose) for all irradiate d dosemeters fall within the limits of the trumpet curves. These resul ts indicated satisfactory performance of our personal dosemeters in th ese intercomparisons.