Measurement of radioactivity in the environment. Air: radon-222. Spot measurement method of the potential alpha energy concentration of its short-lived decay products
13.040.01 - Air quality in general
17.240 - Radiation measurements
EN ISO 11665-3
Reemplaza a: BS EN ISO 11665-3:2015
This document describes spot measurement methods for determining
the activity concentration of short-lived radon-222 decay products
in the air and for calculating the potential alpha energy
This document gives indications for performing a spot
measurement of the potential alpha energy concentration, after
sampling at a given place for several minutes, and the conditions
of use for the measuring devices.
The measurement method described is applicable for a rapid
assessment of the potential alpha energy concentration. The result
obtained cannot be extrapolated to an annual estimate potential
alpha energy concentration of short-lived radon-222 decay products.
Thus, this type of measurement is not applicable for the assessment
of annual exposure or for determining whether or not to mitigate
citizen exposures to radon or radon decay products.
This measurement method is applicable to air samples with
potential alpha energy concentration greater than 5 nJ/m3.
This document does not address the potential contribution of
radon-220 decay products.
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