EN ISO 20044:2024
(Main)Measurement of radioactivity in the environment - Air: aerosol particles - Test method using sampling by filter media (ISO 20044:2022)
Measurement of radioactivity in the environment - Air: aerosol particles - Test method using sampling by filter media (ISO 20044:2022)
This document provides guidance for
— the sampling process of the aerosol particles in the air using filter media. This document takes into account the specific behaviour of aerosol particles in ambient air.
— Two methods for sampling procedures with subsequent or simultaneous measurement:
— the determination of the activity concentration of radionuclides bound to aerosol particles in the air knowing the activity deposited in the filter;
— the operating use of continuous air monitoring devices used for real time measurement.
This document describes the test method to determine activity concentrations of radionuclides bound to aerosol particles after air sampling passing through a filter media designed to trap aerosol particles. The method can be used for any type of environmental study or monitoring.
This document does not cover the details of measurement test techniques (gamma spectroscopy, global alpha and beta counting, liquid scintillation, alpha spectrometry) used to determine the activity deposited in the media filter, which are either based on existing standards or internal methods developed by the laboratory in charge of those measurements. Also, this document does not cover the variability of the aerosol particle sizes as given by the composition of the dust contained in ambient air. This document does not address to sampling of radionuclides bound to aerosol particles in the effluent air of nuclear facilities [see ISO 2889:2021].
Bestimmung der Radioaktivität in der Umwelt - Luft: Aerosole - Messverfahren mittels Sammlung auf Filtern (ISO 20044:2022)
Mesurage de la radioactivité dans l'environnement - Air: particules d'aérosol - Méthode d’essai utilisant l’échantillonnage par un média filtrant (ISO 20044:2022)
Merjenje radioaktivnosti v okolju - Zrak: aerosolni delci - Preskusna metoda z vzorčenjem s filtrirnimi mediji (ISO 20044:2022)
Ta dokument podaja navodila za
– postopek vzorčenja aerosolnih delcev v zraku z uporabo filtrirnih medijev. Ta dokument obravnava posebno vedenje aerosolnih delcev v zunanjem zraku.
– dve metodi vzorčenja z naknadnim ali sočasnim merjenjem:
– določanje koncentracije aktivnosti radionuklidov, vezanih na aerosolne delce v zraku, ob poznavanju aktivnosti, odložene v filtru;
– operativna uporaba naprav za stalni nadzor zraka, ki se uporabljajo za merjenje v realnem času.
Ta dokument opisuje preskusno metodo za določanje koncentracije aktivnosti radionuklidov, vezanih na aerosolne delce po vzorčenju zraka ob prehodu skozi filtrirni medij, ki je namenjen lovljenju aerosolnih delcev. Metodo je mogoče uporabiti za vse vrste okoljskih študij ali nadzorovanja.
Ta dokument ne zajema podrobnosti merilnih preskusnih tehnik (spektroskopija z žarki gama, globalno alfa in beta štetje, štetje s tekočinskim scintilatorjem, alfa spektrometrija), ki se uporabljajo za določanje aktivnosti, odložene v filtrirnem mediju in temeljijo na obstoječih standardih ali notranjih metodah, ki jih je razvil laboratorij, zadolžen za te meritve. Prav tako ne zajema spremenljivosti velikosti aerosolnih delcev, ki jo določa sestava prahu v zunanjem zraku. Ta dokument ne obravnava vzorčenja radionuklidov, vezanih na aerosolne delce v izpustnem zraku jedrskih objektov [glej standard ISO 2889:2021].
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2024
Merjenje radioaktivnosti v okolju - Zrak: aerosolni delci - Preskusna metoda z
vzorčenjem s filtrirnimi mediji (ISO 20044:2022)
Measurement of radioactivity in the environment - Air: aerosol particles - Test method
using sampling by filter media (ISO 20044:2022)
Bestimmung der Radioaktivität in der Umwelt - Luft: Aerosole - Messverfahren mittels
Sammlung auf Filtern (ISO 20044:2022)
Mesurage de la radioactivité dans l'environnement - Air: particules d'aérosol - Méthode
d’essai utilisant l’échantillonnage par un média filtrant (ISO 20044:2022)
Ta slovenski standard je istoveten z: EN ISO 20044:2024
ICS:
13.040.01 Kakovost zraka na splošno Air quality in general
17.240 Merjenje sevanja Radiation measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 20044
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2024
EUROPÄISCHE NORM
ICS 17.240; 13.040.01
English Version
Measurement of radioactivity in the environment - Air:
aerosol particles - Test method using sampling by filter
media (ISO 20044:2022)
Mesurage de la radioactivité dans l'environnement - Bestimmung der Radioaktivität in der Umwelt - Luft:
Air: particules d'aérosol - Méthode d'essai utilisant Aerosole - Messverfahren mittels Sammlung auf Filtern
l'échantillonnage par un média filtrant (ISO (ISO 20044:2022)
20044:2022)
This European Standard was approved by CEN on 7 July 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20044:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 20044:2022 has been prepared by Technical Committee ISO/TC 85 “Nuclear energy,
nuclear technologies, and radiological protection” of the International Organization for Standardization
(ISO) and has been taken over as EN ISO 20044:2024 by Technical Committee CEN/TC 430 “Nuclear
energy, nuclear technologies, and radiological protection” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2025, and conflicting national standards shall
be withdrawn at the latest by January 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 20044:2022 has been approved by CEN as EN ISO 20044:2024 without any modification.
INTERNATIONAL ISO
STANDARD 20044
First edition
2022-12
Measurement of radioactivity in the
environment — Air: aerosol particles
— Test method using sampling by
filter media
Mesurage de la radioactivité dans l'environnement — Air: particules
d'aérosol — Méthode d’essai utilisant l’échantillonnage par un média
filtrant
Reference number
ISO 20044:2022(E)
ISO 20044:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 20044:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols . 5
5 Principle . 6
6 Sampling . 9
6.1 General . 9
6.2 Choice of criteria for sampling location . 9
6.3 Criteria for sampling duration . . 9
6.4 Criteria for sampling equipment . 9
6.5 Criteria for filter .12
6.6 Criteria for air volume and flow-rate measurement .12
7 From filter collecting to deferred deposited activity measurement report .12
8 Determination of the activity concentration in the air from deferred measurement
results .13
8.1 General .13
8.2 Model of evaluation . 13
8.3 Relative standard uncertainty . 14
8.4 Decision threshold . 14
8.5 Detection limit . 14
8.6 Expression of activity concentration results . 14
[11]
9 Real time measurement with continuous air monitor .14
9.1 Context . 14
9.2 Description of CAM .15
9.3 Operating use of CAM . 17
10 Quality assurance and quality control .17
10.1 General . 17
10.2 Sample identification, handling, and storage . 17
10.3 Sampling equipment . 17
10.4 Documentation and record keeping . 18
[16]
Annex A (informative) Radionuclides in the atmosphere .19
Annex B (informative) General information on aerosol behaviour .21
Annex C (informative) Example of sampling head and characterizations .25
Annex D (informative) Examples of some sampling filters characteristics .27
Annex E (informative) Example of sampling information sheet .30
Annex F (informative) Characterization of the transport line .31
Annex G (informative) Example of calculation of the activity concentration in the air from
deferred measurement .33
Annex H (informative) Illustration of CAM empirical minimum detectable activity
concentration setup and its associated response time .37
Bibliography .43
iii
ISO 20044:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that c
...
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