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EVS-EN ISO 11665-11:2019

Measurement of radioactivity in the environment - Air: radon-222 - Part 11: Test method for soil gas with sampling at depth (ISO 11665-11:2016)

General information

Valid from 16.12.2019
Base Documents
ISO 11665-11:2016; EN ISO 11665-11:2019
Directives or regulations
None

Standard history

Status
Date
Type
Name
16.12.2019
Main
01.03.2018
Main
This part of ISO 11665 describes radon-222 test methods for soil gas using passive and active in-situ
sampling at depth comprised between surface and 2 m.
This part of ISO 11665 gives general requirements for the sampling techniques, either passive or active
and grab or continuous, for in-situ radon-222 activity concentrations measurement in soil gas.
The radon-222 activity concentration in the soil can be measured by spot or continuous measurement
methods (see ISO 11665-1). In case of spot measurement methods (ISO 11665-6), the soil gas sampling
is active only. On the other hand, the continuous methods (ISO 11665-5) are typically associated with
passive soil gas sampling.
The measurement methods are applicable to all types of soil and are determined according to the end
use of the measurement results (phenomenological observation, definition or verification of mitigation
techniques, etc.) taking into account the expected level of the radon-222 activity concentration.
These measurement methods are applicable to soil gas samples with radon activity concentrations
greater than 100 Bq/m3.
NOTE This part of ISO 11665 is complementary with ISO 11665-7 for characterization of the radon soil
potential.

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