EN ISO 11665-7:2015

Measurement of radioactivity in the environment - Air: radon-222 - Part 7: Accumulation method for estimating surface exhalation rate (ISO 11665-7:2012)

ISO 11665-7:2012 gives guidelines for estimating the radon-222 surface exhalation rate over a short period (a few hours), at a given place, at the interface of the medium (soil, rock, laid building material, walls, etc.) and the atmosphere. This estimation is based on measuring the radon activity concentration emanating from the surface under investigation and accumulated in a container of a known volume for a known duration.
This method is estimative only, as it is difficult to quantify the influence of many parameters in environmental conditions. ISO 11665-7:2012 is particularly applicable, however, in case of an investigation, a search for sources or a comparative study of exhalation rates at the same site. ISO 11665-7:2012 does not cover calibration conditions for the rate estimation devices.

Ermittlung der Radioaktivität in der Umwelt - Luft: Radon-222 - Teil 7: Anreicherungsverfahren zur Abschätzung der Oberflächenexhalationsrate (ISO 11665-7:2012)

Mesurage de la radioactivité dans l'environnement - Air: radon 222 - Partie 7: Méthode d'estimation du flux surfacique d'exhalation par la méthode d'accumulation (ISO 11665-7:2012)

L'ISO 11665-7:2012 donne des lignes directrices pour estimer le flux surfacique d'exhalation du radon 222 sur une courte période de temps (quelques heures), en un point donné, à l'interface entre un milieu (sol, roche, matériau de construction posé, mur, etc.) et l'atmosphère. Cette estimation est réalisée en mesurant l'activité volumique du radon exhalant de la surface étudiée et accumulé dans un conteneur de volume connu sur une période donnée.
Cette méthode n'est qu'estimative, car l'influence de nombreux paramètres est difficilement quantifiable dans les conditions environnementales. L'ISO 11665-7:2012 revêt cependant tout son intérêt dans le cas d'une investigation, d'une recherche de sources ou d'une étude comparative des flux d'exhalation sur un même site. L'ISO 11665-7:2012 ne traite pas des conditions d'étalonnage des dispositifs d'estimation du flux.

Merjenje radioaktivnosti v okolju - Zrak: radon-222 - 7. del: Akumulacijska metoda za ocenjevanje hitrosti površinskega izhajanja (ISO 11665-7:2012)

ISO 11665-7:2012 podaja smernice za ocenjevanje hitrosti površinskega izhajanja za radon-222 v kratkem obdobju (nekaj ur) na danem mestu pri stiku medija (zemlja, kamnine, položeni gradbeni material, stene itd.) z zrakom. Ta ocena temelji na izmerjeni koncentraciji aktivnosti radona, ki prehaja iz preiskovane površine in se nalaga v vsebniku znane prostornine v znanem časovnem okvirju. Ta metoda se uporablja samo za namene ocenjevanja, saj je kvantifikacija vpliva številnih parametrov v okoljskih pogojih težavna. Vendar se ISO 11665-7:2012 zlasti uporablja v primeru preiskave, iskanja virov ali primerjalne študije hitrosti izhajanja na istem mestu. ISO 11665-7:2012 ne obravnava pogojev kalibracije za naprave za ocenjevanje hitrosti.

General Information

• Status: Published
• Publication Date: 15-Sep-2015
• Withdrawal Date: 30-Mar-2016
• ICS: 17.240 - Radiation measurements
• Technical Committee: CEN/TC 430 - Nuclear energy, nuclear technologies, and radiological protection
• Drafting Committee: CEN/TC 430 - Nuclear energy, nuclear technologies, and radiological protection
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 16-Sep-2015
• Due Date: 08-Sep-2016
• Completion Date: 16-Sep-2015
• Ref Project: SIST EN ISO 11665-7:2015 - Measurement of radioactivity in the environment - Air: radon-222 - Part 7: Accumulation method for estimating surface exhalation rate (ISO 11665-7:2012)

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2015
Merjenje radioaktivnosti v okolju - Zrak: radon-222 - 7. del: Akumulacijska metoda
za ocenjevanje hitrosti površinskega izhajanja (ISO 11665-7:2012)
Measurement of radioactivity in the environment - Air: radon-222 - Part 7: Accumulation
method for estimating surface exhalation rate (ISO 11665-7:2012)
Ermittlung der Radioaktivität in der Umwelt - Luft: Radon-222 - Teil 7:
Anreicherungsverfahren zur Abschätzung der Oberflächenexhalationsrate (ISO 11665-
7:2012)
Mesurage de la radioactivité dans l'environnement - Air: radon 222 - Partie 7: Méthode
d'estimation du flux surfacique d'exhalation par la méthode d'accumulation (ISO 11665-
7:2012)
Ta slovenski standard je istoveten z: EN ISO 11665-7:2015
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 11665-7
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2015
EUROPÄISCHE NORM
ICS 17.240
English Version
Measurement of radioactivity in the environment - Air:
radon-222 - Part 7: Accumulation method for estimating
surface exhalation rate (ISO 11665-7:2012)
Mesurage de la radioactivité dans l'environnement - Ermittlung der Radioaktivität in der Umwelt - Luft:
Air: radon 222 - Partie 7: Méthode d'estimation du flux Radon-222 - Teil 7: Anreicherungsverfahren zur
surfacique d'exhalation par la méthode d'accumulation Abschätzung der Oberflächenexhalationsrate (ISO
(ISO 11665-7:2012) 11665-7:2012)
This European Standard was approved by CEN on 12 June 2015.

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
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11665-7:2015 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 11665-7:2012 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 11665-7:2015 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 March 2016, and conflicting national standards shall
be withdrawn at the latest by March 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 11665-7:2012 has been approved by CEN as EN ISO 11665-7:2015 without any
modification.
INTERNATIONAL ISO
STANDARD 11665-7
First edition
2012-07-15
Measurement of radioactivity in the
environment — Air: radon-222 —
Part 7:
Accumulation method for estimating
surface exhalation rate
Mesurage de la radioactivité dans l’environnement — Air: radon 222 —
Partie 7:
Méthode d’estimation du flux surfacique d’exhalation par la méthode
d’accumulation
Reference number
ISO 11665-7:2012(E)
©
ISO 2012
ISO 11665-7:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 11665-7:2012(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 . 2
4 Principle of the measurement method for estimating surface exhalation rate . 2
5 Equipment . 4
6 Accumulation of radon in a container . 5
6.1 Accumulation characteristics . 5
6.2 Accumulation duration . 5
7 Sampling . 5
7.1 Sampling objective . 5
7.2 Sampling characteristics . 5
7.3 Sampling duration . 6
7.4 Volume of air sampled . 6
8 Detection method . 6
9 Measurement . 6
9.1 Procedure . 6
9.2 Influence quantities . 7
10 Expression of results . 7
10.1 Radon surface exhalation rate . 7
10.2 Standard uncertainty . 7
10.3 Decision threshold and detection limit . 7
10.4 Limits of the confidence interval . 8
11 Test report . 8
Annex A (informative) Example of a sample results sheet .10
Annex B (informative) Estimation of radon surface exhalation rate using a continuous
measurement method .12
Annex C (informative) Estimation of radon surface exhalation rate using a spot measurement method 18
Bibliography .23
ISO 11665-7:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 11665-7 was prepared by Technical Committee ISO/TC 85, Nuclear energy, nuclear technologies, and
radiological protection, Subcommittee SC 2, Radiological protection.
ISO 11665 consists of the following parts, under the general title Measurement of radioactivity in the
environment — Air: radon-222:
— Part 1: Origins of radon and its short-lived decay products and associated measurement methods
— Part 2: Integrated measurement method for determining average potential alpha energy concentration of
its short-lived decay products
— Part 3: Spot measurement method of the potential alpha energy concentration of its short-lived decay products
— Part 4: Integrated measurement method for determining average activity concentration using passive
sampling and delayed analysis
— Part 5: Continuous measurement method of the activity concentration
— Part 6: Spot measurement method of the activity concentration
— Part 7: Accumulation method for estimating surface exhalation rate
— Part 8: Methodologies for initial and additional investigations in buildings
The following parts are under preparation:
— Part 9: Method for determining exhalation rate of dense building materials
— Part 10: Determination of diffusion coefficient in waterproof materials using activity concentration measurement
iv © ISO 2012 – All rights reserved

ISO 11665-7:2012(E)
Introduction
Radon isotopes 222, 220 and 219 are radioactive gases produced by the disintegration of radium isotopes 226,
224 and 223, which are decay products of uranium-238, thorium-232 and uranium-235 respectively, and are
all found in the earth’s crust. Solid elements, also radioactive, followed by stable lead are produced by radon
[1]
disintegration .
Radon is today considere
...