DIN EN 17216:2023-07-Draft: Construction products - Assessment of release of dangerous substances - Determination of radium-226, thorium-232 and potassium-40 activity using gamma-ray spectrometry; German and English version prEN 17216:2023

This document describes a test method for the determination of the specific activities of the radionuclides radium-226, thorium-232 and potassium-40 in building products by semiconductor gamma spectrometry. This document describes the sampling of a laboratory sample, the sample preparation and the measurement of the sample by semiconductor gamma spectrometry. This includes background subtraction, energy and efficiency calibration, spectral analysis, calculation of activity with associated uncertainties or calculation of detection limit and detection limit and reporting of test results. The responsible national standardisation body is the Joint Working Committee NA 005-53-01 GA "Joint Working Committee NABau/NAW, Soil and Groundwater (SpA to CEN/TC 351/WG 1 and CEN/TC 351/WG 1/AHG)" in the DIN Standards Committee for Construction (NABau). Compared to the previous document DIN CEN/TS 17219:2018-12, the following significant changes have been made: a) Conversion of the technical specification into a European standard; b) Addition of validation data from a round robin test on repeatability and reproducibility (see Sections 1 and 9, as well as Annex F) [completion of the data is planned in a 2nd draft standard]; c) Updating of the normative and informative references.