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  • BSI
    BS EN ISO 11665-7:2015 Measurement of radioactivity in the environment. Air: radon-222 - Accumulation method for estimating surface exhalation rate
    Edition: 2015
    $418.55
    / user per year

Description of BS EN ISO 11665-7:2015 2015

This part of ISO 11665 gives guidelines for estimating the radon-222 surface exhalation rate over a short period (a few hours), at a given place, at the interface of the medium (soil, rock, laid building material, walls, etc.) and the atmosphere. This estimation is based on measuring the radon activity concentration emanating from the surface under investigation and accumulated in a container of a known volume for a known duration.

This method is estimative only, as it is difficult to quantify the influence of many parameters in environmental conditions. This part of ISO 11665 is particularly applicable, however, in case of an investigation, a search for sources or a comparative study of exhalation rates at the same site. This part of ISO 11665 does not cover calibration conditions for the rate estimation devices.

The measurement method described is applicable for radon exhalation rates greater than 5 mBq/m2/s.

NOTE The uncertainty relating to the estimation of the result obtained by applying this part of ISO 11665 cannot guarantee that the true flux value is included in the uncertainty domain.



Standard NumberBS EN ISO 11665-7:2015
TitleMeasurement of radioactivity in the environment. Air: radon-222 - Accumulation method for estimating surface exhalation rate
StatusUnder Review
Publication Date2015-10-31
Identical National Standard OfEN ISO 11665-7:2015, ISO 11665-7:2015
CorrectsBS ISO 11665-7:2012
DescriptorsRadioactive pollution, Spectroscopy, Alpha particles, Gamma-radiation, Radioactivity, Radiation measurement, Radionuclides, Radioactive materials, Air, Radon
ICS13.040.01 Air quality in general, 17.240 Radiation measurements
CommitteeNCE/2
ISBN978 0 580 88252 4
PublisherBSI
Pages34

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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