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BS ISO 11665-4:2021 – TC

BS ISO 11665-4:2021 – TC

$217.84

Tracked Changes. Measurement of radioactivity in the environment. Air: radon-222 – Integrated measurement method for determining average activity concentration using passive sampling and delayed analysis

Published By Publication Date Number of Pages
BSI 2021 88
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This document describes radon-222 integrated measurement techniques with passive sampling. It gives indications for determining the average activity concentration of the radon-222 in the air from measurements based on easy-to-use and low-cost passive sampling, and the conditions of use for the sensors.

This document covers samples taken without interruption over periods varying from a few days to one year.

This measurement method is applicable to air samples with radon activity concentrations greater than 5 Bq/m3.

PDF Catalog

PDF Pages PDF Title
50 undefined
54 Foreword
55 Introduction
56 1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
57 3.2 Symbols
4 Principle
58 5 Equipment
6 Sampling
6.1 Sampling objective
6.2 Sampling characteristics
6.3 Sampling conditions
6.3.1 General
6.3.2 Installation of the sensor
59 6.3.3 Sampling duration
6.3.4 Volume of air sampled
60 7 Detection
8 Measurement
8.1 Procedure
8.2 Influence quantities
8.3 Calibration
8.4 Average radon activity concentration
8.5 Standard uncertainty
61 8.6 Decision threshold and detection limit
8.7 Limits of the confidence interval
9 Test report
63 Annex A (normative) Measurement method using a solid-state nuclear track detector (SSNTD)
69 Annex B (normative) Measurement method using an electret detector
77 Annex C (normative) Measurement method using activated charcoal
86 Bibliography

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BS ISO 11665-4:2021 - TC
$217.84