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BSI 22/30453012 DC:2022 Edition

BSI 22/30453012 DC:2022 Edition

$13.70

BS ISO 18589-3. Measurement of radioactivity in the environment. Soil – Part 3. Test method of gamma-emitting radionuclides using gamma-ray spectrometry

Published By Publication Date Number of Pages
BSI 2022 44
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PDF Catalog

PDF Pages PDF Title
7 Foreword
8 Introduction
11 1 Scope
2 Normative references
12 3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
13 4 Principle
5 Reference sources
5.1 Source(s) for energy calibration
14 5.2 Reference source(s) for efficiency calibration
5.2.1 General
5.2.2 Reference sources for laboratory systems
5.2.3 Reference sources used with numerical methods
15 6 Gamma spectrometry equipment
6.1 General description
6.2 Detector types
6.3 High voltage power supply
16 6.4 Preamplifier
6.5 Cryostat or electric cooler
6.6 Shielding
6.7 Analog or digital acquisition electronics
6.7.1 General
6.7.2 Analog electronic
17 6.7.3 Digital electronic DSP
6.8 Computer, including peripherical devices and software
18 7 Nuclear decay data
8 Sample container
9 Procedure
9.1 Packaging of samples for measuring purposes
19 9.2 Laboratory background level
9.3 Calibration
9.3.1 Energy calibration
20 9.3.2 Efficiency calibration
21 9.4 Correction required for the measurements of natural radionuclides
22 10 Expression of results
10.1 Calculation of the activity per unit of mass
10.1.1 General
10.1.2 Dead time and pile up corrections (see ISO 20042)
23 10.1.3 Decay corrections
10.1.4 Self-absorption correction
24 10.1.5 True coincidence summing
25 10.2 Standard uncertainty
26 10.3 Decision threshold
10.4 Detection limit
10.5 Limits of the coverage intervals
10.5.1 Limits of the probabilistically symmetric coverage interval
27 10.5.2 The shortest coverage interval
10.6 Corrections for contributions from other radionuclides and background
10.6.1 General
10.6.2 Contribution from other radionuclides
29 10.6.3 Contribution from background
11 Test report
31 Annex A (informative) Analysis of natural radionuclides in soil samples using gamma spectrometry
37 Annex B (informative) Self-attenuation correction[19]
40 Annex C (informative) True coincidence summing
42 Annex D (informative) Calculation of the activity per unit mass from a gamma spectrum using a linear background subtraction
44 Bibliography

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BSI 22/30453012 DC
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