CEN - EN ISO 11665-2
Measurement of radioactivity in the environment - Air: radon-222 - Part 2: Integrated measurement method for determining average potential alpha energy concentration of its short-lived decay products
| Organization: | CEN |
| Publication Date: | 1 October 2019 |
| Status: | active |
| Page Count: | 22 |
| ICS Code (Air quality in general): | 13.040.01 |
| ICS Code (Radiation measurements): | 17.240 |
scope:
This document describes integrated measurement methods for short-lived radon‑222 decay products[4]. It gives indications for measuring the average potential alpha energy concentration of short‑lived radon-222 decay products in the air and the conditions of use for the measuring devices.
This document covers samples taken over periods varying from a few weeks to one year. This document is not applicable to systems with a maximum sampling duration of less than one week.
The measurement method described is applicable to air samples with potential alpha energy concentration of short-lived radon-222 decay products greater than 10 nJ/m3 and lower than 1 000 nJ/m3.
NOTE For informative purposes only, this document also addresses the case of radon-220 decay products, given the similarity in behaviour of the radon isotopes 222 and 220.
[4] ICRP Publication 65. Protection against radon-222 at home and at work. In: Annals of the ICRP, 23 (2), 1993
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