Measurement of radioactivity in the environment. Air. Radon 220: Integrated measurement methods for the determination of the average activity concentration using passive solid-state nuclear track detectors (ISO 16641:2014)
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ISO 16641:2014 covers integrated measurement techniques for radon-220 with passive sampling only. It provides information on measuring the average activity concentration of radon-220 in the air, based on easy-to-use and low-cost passive sampling, and the conditions of use for the measuring devices. ISO 16641:2014 covers samples taken without interruption over periods varying from a few months to one year.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, and symbols
3.1 Terms and definitions
3.2 Symbols
4 Principle of the measurement method
5 Equipment
6 Sampling
6.1 Sampling objective
6.2 Sampling characteristics
6.3 Sampling conditions
7 Detection method with solid-state nuclear track detectors (SSNTD)
8 Measurement procedure
8.1 General
8.2 Influencing variables
8.3 Calibration
9 Expression of results
9.1 Average thoron activity concentration
9.2 Standard uncertainty
9.3 Decision threshold
9.4 Detection limit
9.5 Confidence limits
9.6 Example
10 Test report
Annex A Radon-220 and its decay products (informative)
IEC 61577-1:2006
ISO 11665-1:2012 Measurement of radioactivity in the environment -- Air: radon-222 -- Part 1: Origins of radon and its short-lived decay products and associated measurement methods
ISO 11929:2010 Determination of the characteristic limits (decision threshold, detection limit and limits of the confidence interval) for measurements of ionizing radiation -- Fundamentals and application
IEC 61577-1:2006
ISO 11665-1:2012 Measurement of radioactivity in the environment -- Air: radon-222 -- Part 1: Origins of radon and its short-lived decay products and associated measurement methods
ISO 11929:2010 Determination of the characteristic limits (decision threshold, detection limit and limits of the confidence interval) for measurements of ionizing radiation -- Fundamentals and application
ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories