Overview and analysis of the results of IAEA intercomparisons for simulated surface contamination samples

Radiation and Environmental Protection Department of the Vinča Institute readily takes part in various intercomparison measurements, especially those organized by the International Atomic Energy Agency (IAEA). Within these intercomparison, several years in a row (2019-2024.) one of the requirement was to measure samples simulating surface contamination. The measurement method applied was gamma spectrometry, gross alpha and gross beta measurements. This paper presents summation and overview of those results and the analysis of the approach implemented in obtaining the values. The valuation of the trueness and accuracy of the results is also presented and analyzed in order to establish whether the measurement method applied is adequate for obtaining acceptable results.