SIST EN ISO 11665-2:2015
(Main)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 (ISO 11665-2:2012)
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 (ISO 11665-2:2012)
ISO 11665-2:2012 describes integrated measurement methods for short-lived radon-222 decay products. 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.
ISO 11665-2:2012 covers samples taken over periods varying from a few weeks to one year. ISO 11665-2:2012 is not applicable to systems with a maximum sampling duration of less than one week.
Ermittlung der Radioaktivität in der Umwelt - Luft: Radon-222 - Teil 2: Integrierendes Messverfahren für die Bestimmung des Durchschnittswertes der potenziellen Alpha-Energiekonzentration der kurzlebigen Radon-Folgeprodukte (ISO 11665-2:2012)
Mesurage de la radioactivité dans l'environnement - Air: radon 222 - Partie 2: Méthode de mesure intégrée pour la détermination de l'énergie alpha potentielle volumique moyenne de ses descendants à vie courte (ISO 11665-2:2012)
L'ISO 11665-2:2012 décrit les méthodes de mesure intégrées pour les descendants à vie courte du radon 222. Elle donne des indications pour mesurer l'énergie alpha potentielle volumique moyenne des descendants à vie courte du radon 222 dans l'air et sur les conditions d'utilisation des dispositifs de mesure.
L'ISO 11665-2:2012 concerne des échantillons prélevés sur des périodes allant de quelques semaines à un an. L'ISO 11665-2:2012 ne couvre aucune mesure dont la durée de prélèvement maximale est inférieure à une semaine.
Merjenje radioaktivnosti v okolju - Zrak: radon-222 - 2. del: Integrativna metoda za ugotavljanje povprečne potencialne koncentracije alfa energije njegovih kratkoživih razpadnih produktov (ISO 11665-2:2012)
ISO 11665-2:2012 opisuje integrirane merilne metode za kratkožive razpadne produkte radona-222. Podaja navedbe za merjenje povprečne potencialne koncentracije alfa energije kratkoživih razpadnih produktov radona-222 v zraku in pogoje uporabe za merilne naprave. ISO 11665-2:2012 obravnava vzorce, odvzete v obdobjih vse od nekaj tednov do enega leta. ISO 11665-2:2012 se ne uporablja za sisteme z najdaljšim obdobjem vzorčenja manj kot en teden.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 11665-2:2015
01-november-2015
0HUMHQMHUDGLRDNWLYQRVWLYRNROMX=UDN UDGRQGHO ,QWHJUDWLYQDPHWRGD]D
XJRWDYOMDQMHSRYSUHþQHSRWHQFLDOQHNRQFHQWUDFLMHDOIDHQHUJLMHQMHJRYLK
NUDWNRåLYLKUD]SDGQLKSURGXNWRY ,62
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 (ISO 11665-2:2012)
Ermittlung der Radioaktivität in der Umwelt - Luft: Radon-222 - Teil 2: Integrierendes
Messverfahren für die Bestimmung des Durchschnittswertes der potenziellen Alpha-
Energiekonzentration der kurzlebigen Radon-Folgeprodukte (ISO 11665-2:2012)
Mesurage de la radioactivité dans l'environnement - Air: radon 222 - Partie 2: Méthode
de mesure intégrée pour la détermination de l'énergie alpha potentielle volumique
moyenne de ses descendants à vie courte (ISO 11665-2:2012)
Ta slovenski standard je istoveten z: EN ISO 11665-2:2015
ICS:
13.040.99 Drugi standardi v zvezi s Other standards related to air
kakovostjo zraka quality
17.240 Merjenje sevanja Radiation measurements
SIST EN ISO 11665-2:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 11665-2:2015
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SIST EN ISO 11665-2:2015
EN ISO 11665-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2015
EUROPÄISCHE NORM
ICS 17.240
English Version
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 (ISO 11665-2:2012)
Mesurage de la radioactivité dans l'environnement - Ermittlung der Radioaktivität in der Umwelt - Luft:
Air: radon 222 - Partie 2: Méthode de mesure intégrée Radon-222 - Teil 2: Integrierendes Messverfahren für
pour la détermination de l'énergie alpha potentielle die Bestimmung des Durchschnittswertes der
volumique moyenne de ses descendants à vie courte potenziellen Alpha-Energiekonzentration der
(ISO 11665-2:2012) kurzlebigen Radon-Folgeprodukte (ISO 11665-2:2012)
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 11665-2:2015 E
worldwide for CEN national Members.
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SIST EN ISO 11665-2:2015
EN ISO 11665-2:2015 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 11665-2:2015
EN ISO 11665-2:2015 (E)
European foreword
The text of ISO 11665-2:2012 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 11665-2:2015 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 11665-2:2012 has been approved by CEN as EN ISO 11665-2:2015 without any
modification.
3
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SIST EN ISO 11665-2:2015
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SIST EN ISO 11665-2:2015
INTERNATIONAL ISO
STANDARD 11665-2
First edition
2012-07-15
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
Mesurage de la radioactivité dans l’environnement — Air: radon 222 —
Partie 2: Méthode de mesure intégrée pour la détermination de l’énergie
alpha potentielle volumique moyenne de ses descendants à vie courte
Reference number
ISO 11665-2:2012(E)
©
ISO 2012
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SIST EN ISO 11665-2:2015
ISO 11665-2:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
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 copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
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SIST EN ISO 11665-2:2015
ISO 11665-2:2012(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 . 3
5 Equipment . 3
5.1 General . 3
5.2 Measuring device . 3
5.3 Counting system . 4
6 Sampling . 4
6.1 Sampling objective . 4
6.2 Sampling characteristics . 4
6.3 Sampling conditions . 5
7 Detection method . 6
8 Measurement . 6
8.1 Procedure . 6
8.2 Influence quantities . 6
8.3 Calibration . 7
9 Expression of results . 7
9.1 Average potential alpha energy concentration . 7
9.2 Standard uncertainty . 8
9.3 Decision threshold and detection limit . 8
9.4 Limits of the confidence interval . 9
10 Test report . 9
Annex A (informative) Example of a method meeting the requirements of this part of ISO 11665 . 11
Bibliography .13
© ISO 2012 – All rights reserved iii
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SIST EN ISO 11665-2:2015
ISO 11665-2:2012(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 11665-2 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
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SIST EN ISO 11665-2:2015
ISO 11665-2:2012(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 .
When disintegrating, radon emits alpha particles and generates solid decay products, which are also radioactive
(polonium, bismuth, lead, etc.). The potential effects on human health of radon lie in its solid decay products
rather than the gas itself. Whether or not they are attached to atmospheric aerosols, radon decay products can
be inhaled and deposited in the bronchopulmonary tree to varying depths according to their size.
Radon is today considered to be the main source of human exposure to natural radiation. The UNSCEAR
[2]
(2006) report suggests that, at the worldwide level, radon accounts for around 52 % of global average
exposure to natural radiation. The radiological impact of isotope 222 (48 %) is far more significant than isotope
220 (4 %), while isotope 219 is considered negligible. For this reason, references to radon in this part of
ISO 11665 refer only to radon-222.
Radon activity concentration can vary by one to multiple orders of magnitude over time and space. Exposure
to radon and its decay products varies tremendously from one area to another, as it depends firstly on the
amount of radon emitted by the soil and the building materials in each area and, secondly, on the degree of
containment and weather conditions in the areas where individuals are exposed.
Variations of a few nanojoules per cubic metre to several thousand nanojoules per cubic metre are observed
in the potential alpha energy concentration of short-lived radon decay products.
The potential alpha energy concentration of short-lived radon-222 decay products in the atmosphere can be
measured by spot and integrated measurement methods (see ISO 11665-1). This part of ISO 11665 deals
with integrated measurement methods. Integrated measuring methods are applicable in assessing human
[3]
exposure to radiation .
NOTE The origin of radon-222 and its short-lived decay products in the atmospheric environment and other
measurement methods are described generally in ISO 11665-1.
© ISO 2012 – All rights reserved v
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SIST EN ISO 11665-2:2015
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SIST EN ISO 11665-2:2015
INTERNATIONAL STANDARD ISO 11665-2:2012(E)
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
1 Scope
[4]
This part of ISO 11665 describes integrated measurement methods for short-lived radon-222 decay products .
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 part of ISO 11665 covers samples taken over periods varying from a few weeks to one year. This part of
ISO 11665 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
3 3
short-lived radon-222 decay products greater than 10 nJ/m and lower than 1 000 nJ/m .
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.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 11665-1, Measurement of radioactivity in the environment — Air: radon-222 — Part 1: Origins of radon and
its short-lived decay products and associated measurement methods
ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
IEC 61577-1, Radiation protection instrumentation — Radon and radon decay product measuring instruments —
Part 1: General principles
IEC 61577-3, Radiation protection instrumentation — Radon and radon decay product measuring instruments —
Part 3: Specific requirements for radon decay product measuring instruments
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11665-1 apply.
© ISO 2012 – All rights reserved 1
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SIST EN ISO 11665-2:2015
ISO 11665-2:2012(E)
3.2 Symbols
For the purposes of this document, the symbols given in ISO 11665-1 and the following apply.
222
a attenuation coefficient relating to the Rn found in the collimators corresponding to the range P
1
(established theoretically and provided by the manufacturer)
222
b attenuation coefficient relating to the Rn found in the collimators corresponding to the range P
2
(established theoretically and provided by the manufacturer)
alpha particle energy produced by the disintegration of the nuclide i, in joules
E
AE,i
average potential alpha energy concentration of the nuclide i, in joules per cubic metre
E
PAEC,i
*
decision threshold of the average potential alpha energy concentration of the nuclide i, in joules
E
PAEC,i
per cubic metre
#
detection limit of the average potential alpha energy concentration of the nuclide i, in joules per
E
PAEC,i
cubic metre
lower limit of the confidence interval of the average potential alpha energy concentration of the
E
PAEC,i
nuclide i, in joules per cubic metre
upper limit of the confidence interval of the average potential alpha energy concentration of the
E
PAEC,i
nuclide i, in joules per cubic metre
n counting number of each range P
i
P range recording alpha particles for i = 1, 2, 3, 4
i
th
R j number of net count of range P with deduced background for i = 1, 2, 3, 4
i
Pj,
i
mean number of net count of range P with deduced background for i = 1, 2, 3, 4
i
R
P
i
mean number of count due to background
R
0
212
r
ratio between the number of alpha particles emitted by Bi (α emitter at 36 %) and the number
212 212
of alpha particles emitted by Po (produced by β disintegration at 64 % of Bi); 0,56
U expanded uncertainty calculated by U = k⋅u( ) with k = 2
u( ) standard uncertainty associated with the measurement result
u ( ) relative standard uncertainty
rel
V sampled volume, in cubic metres
ε geometric detection efficiency (established theoretically), i.e. the ratio between the number of
gd
tracks counted and the number of alpha particles emitted by the deposit collected on the filter
ε collection efficiency (established experimentally), i.e. the ratio between the number of atoms of
hc
short-lived decay products collected per unit of sampled volume of air and the number of atoms
per unit of volume of air present in the detection system environment
2 © ISO 2012 –
...
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