Personal Dosimetry Laboratory of the Public Health Institute of Republic of Srpska (PHIRS) is estimating doses to approximately 1500 occupationally exposed workers to ionizing radiation on annual basis which represents 1/3 of occupationally exposed workers of Bosnia and Herzegovina. It is well known fact that the impact of ionizing radiation to human body and the risk of severe adverts effects are correlated with the magnitude of exposure. Therefore, delivering precise and accurate measurement result is essential in control of occupational exposure. Inter-comparison exercise plays an important role in testing laboratories to demonstrate technical competence. Participation in globally acknowledged and recognized EURADOS inter-comparison exercise for whole body dosemeters in photon fields is being conducted in 2 – years cycle by the laboratory. This paper is focused on the analysis of the EURADOS inter-comparison results. From 2014 to 2020, in total 4 inter-comparison exercises have been conducted, each requesting circa 30 dosemeters to be labelled and dispatched for irradiations. Entire number of the dosemeters is divided into groups for irradiations to a reference values with different irradiation qualities, dose ranges, angle of incidence and one group is kept to monitor the background. Statistical analysis of measured quantity Hp(10) has been reported with response values (arithmetic mean, median, minimum, maximum and coefficient of variation). All response values are inside the trumpet curve defined in ISO 14146, ranging in mean response from 0.85 to 0.92. In addition, results are compared to En value and estimated uncertainty budget. This demonstrates that measured results are in compliance with recommendations on accuracy for radiation protection purposes.

Measurement for a better life