EN ISO 16641:2016

SLOVENSKI STANDARD
01-junij-2016
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Measurement of radioactivity in the environment - Air - Radon 220: Integrated
measurement methods for the determination of the average activity concentration using
passive solid-state nuclear track detectors (ISO 16641:2014)
Ermittlung der Radioaktivität in der Umwelt - Luft - Radon-220: Integrierende
Messmethoden für die Bestimmung der mittleren Aktivitätskonzentration mit passiven
Festkörperspurdetektoren (ISO 16641:2014)
Mesurage de la radioactivité dans l'environnement - Air - Radon 220: Méthode de
mesure intégrée pour la détermination de l'activité volumique moyenne avec des
détecteurs passifs solides de traces nucléaires (ISO 16641:2014)
Ta slovenski standard je istoveten z: EN ISO 16641:2016
ICS:
13.040.99 Drugi standardi v zvezi s Other standards related to air
kakovostjo zraka quality
17.240 Merjenje sevanja Radiation measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 16641
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2016
EUROPÄISCHE NORM
ICS 17.240
English Version
Measurement of radioactivity in the environment - Air -
Radon 220: Integrated measurement methods for the
determination of the average activity concentration using
passive solid-state nuclear track detectors (ISO
16641:2014)
Mesurage de la radioactivité dans l'environnement - Ermittlung der Radioaktivität in der Umwelt - Luft -
Air - Radon 220: Méthode de mesure intégrée pour la Radon-220: Integrierende Messmethoden für die
détermination de l'activité volumique moyenne avec Bestimmung der mittleren Aktivitätskonzentration mit
des détecteurs passifs solides de traces nucléaires (ISO passiven Festkörperspurdetektoren (ISO 16641:2014)
16641:2014)
This European Standard was approved by CEN on 21 February 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16641:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
The text of ISO 16641:2014 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 16641:2016 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 October 2016, and conflicting national standards shall
be withdrawn at the latest by October 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16641:2014 has been approved by CEN as EN ISO 16641:2016 without any modification.

INTERNATIONAL ISO
STANDARD 16641
First edition
2014-10-01
Measurement of radioactivity in the
environment — Air — Radon 220:
Integrated measurement methods
for the determination of the average
activity concentration using passive
solid-state nuclear track detectors
Mesurage de la radioactivité dans l’environnement — Air — Radon
220: Méthode de mesure intégrée pour la détermination de l’activité
volumique moyenne avec des détecteurs passifs solides de traces
nucléaires
Reference number
ISO 16641:2014(E)
©
ISO 2014
ISO 16641:2014(E)
© ISO 2014
All rights reserved. Unless otherwise specified, 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.
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Published in Switzerland
ii © ISO 2014 – All rights reserved

ISO 16641:2014(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, and symbols . 1
3.1 Terms and definitions . 1
3.2 Symbols . 3
4 Principle of the measurement method . 4
5 Equipment . 5
6 Sampling . 6
6.1 Sampling objective . 6
6.2 Sampling characteristics . . 6
6.3 Sampling conditions . 6
7 Detection method with solid-state nuclear track detectors (SSNTD) .7
8 Measurement procedure . 7
8.1 General . 7
8.2 Influencing variables . 8
8.3 Calibration . 8
9 Expression of results . 9
9.1 Average thoron activity concentration . 9
9.2 Standard uncertainty . 9
9.3 Decision threshold .10
9.4 Detection limit .10
9.5 Confidence limits.11
9.6 Example .11
10 Test report .12
Annex A (informative) Radon-220 and its decay products .14
Bibliography .16
ISO 16641:2014(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 committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 85, Nuclear energy, nuclear technologies, and
radiological p
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