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ISO 11665-2:2019

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
4 sht 2019

General information

90.60     3 dhj 2024

ISO

ISO/TC 85/SC 2

International Standard

13.040.01     17.240  

anglisht   frëngjisht  

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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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 11665-2:2012

NOW

PUBLISHED
ISO 11665-2:2019
90.60 Close of review
3 dhj 2024