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EVS-EN ISO 11665-7:2015

Measurement of radioactivity in the environment - Air: radon-222 - Part 7: Accumulation method for estimating surface exhalation rate (ISO 11665-7:2012)

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Kehtiv alates 06.10.2015
Alusdokumendid
ISO 11665-7:2012; EN ISO 11665-7:2015
Tegevusala (ICS grupid)
17.240 Kiirgusmõõtmised
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Standardi ajalugu

Staatus
Kuupäev
Tüüp
Nimetus
06.10.2015
Põhitekst
ISO 11665-7:2012 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. ISO 11665-7:2012 is particularly applicable, however, in case of an investigation, a search for sources or a comparative study of exhalation rates at the same site. ISO 11665-7:2012 does not cover calibration conditions for the rate estimation devices.

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EVS-EN ISO 11665-2:2015

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