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BS EN 17462:2021

BS EN 17462:2021

$167.15

Animal feeding stuffs. Methods of sampling and analysis. Determination of the radionuclides Iodine-131, Caesium-134 and Caesium-137 in feed

Published By Publication Date Number of Pages
BSI 2021 38
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This document describes a method for determination of the massic activity (Bq/kg) of 131I, 134Cs and 137Cs in animal feeding stuffs in monitoring laboratories. General guidance on the preparation of feed samples and the measurement of the three radionuclides 131I, 134Cs and 137Cs by high resolution gamma-ray spectrometry is provided. The current document aims to be complementary to existing standards. More information on sample preparation, moisture content determination and gamma-ray spectrometry can be found in specific standards referred to in this document. For example, generic advice on the equipment selection, detectors and quality assurance for gamma-ray spectrometry can be found in ISO 20042 [1]. The method was fully statistically tested and evaluated in a collaborative trial comprising five animal feeding stuff samples for the radionuclides 131I, 134Cs and 137Cs. Details on the successfully tested working range for each of the examined radionuclides are described in Annex C.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
10 4 Symbols and abbreviations
4.1 Symbols
12 4.2 Abbreviations
13 5 Principle
6 Safety precautions
7 Apparatus
7.1 General
7.2 Equipment for test portion preparation
14 7.3 Containers to be used
8 Procedure
8.1 Calibration
17 8.2 Test portion preparation
18 8.3 Spectrum recording
8.4 Spectrum analysis
19 8.5 Quality assurance
20 9 Expression of results
9.1 Massic activity calculation
25 9.2 Characteristic limits
26 9.3 Precision
27 9.4 Test report
28 Annex A (informative)List of possible interfering gamma rays
29 Annex B (informative)Example of uncertainty budget in gamma-ray spectrometry using an HPGe detector
30 Annex C (informative)Results of the collaborative trial
C.1 General
34 C.2 Repeatability
C.3 Reproducibility

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BS EN 17462:2021
$167.15