Water quality - Gamma-ray emitting radionuclides - Test method using high resolution gamma-ray spectrometry (ISO 10703:2021)

This document specifies a method for the physical pre-treatment and conditioning of water samples and the determination of the activity concentration of various radionuclides emitting gamma-rays with energies between 40 keV and 2 MeV, by gamma‑ray spectrometry according to the generic test method described in ISO 20042.
The method is applicable to test samples of drinking water, rainwater, surface and ground water as well as cooling water, industrial water, domestic and industrial wastewater after proper sampling, sample handling, and test sample preparation (filtration when necessary and taking into account the amount of dissolved material in the water). This method is only applicable to homogeneous samples or samples which are homogeneous via timely filtration.
The lowest limit that can be measured without concentration of the sample or by using only passive shield of the detection system is about 5·10-2 Bq/l for e.g. 137Cs.1 The upper limit of the activity corresponds to a dead time of 10 %. Higher dead times may be used but evidence of the accuracy of the dead-time correction is required.
Depending on different factors, such as the energy of the gamma-rays, the emission probability per nuclear disintegration, the size and geometry of the sample and the detector, the shielding, the counting time and other experimental parameters, the sample may require to be concentrated by evaporation if activities below 5·10-2 Bq/l need to be measured. However, volatile radionuclides (e.g. radon and radioiodine) can be lost during the source preparation.
This method is suitable for application in emergency situations.
1The sample geometry: 3l Marinelli beaker; detector: GE HP N relative efficiency 55 % ; counting time: 18h.

Wasserbeschaffenheit - Gammastrahlung emittierende Radionuklide - Verfahren mittels hochauflösender Gammaspektrometrie (ISO 10703:2021)

Dieses Dokument legt ein Verfahren zur physikalischen Vor- und Aufbereitung von Wasserproben und zur Bestimmung der Aktivitätskonzentration verschiedener Gammastrahlen mit Energien zwischen 40 keV und 2 MeV emittierender Radionuklide in Wasserproben mittels Gammaspektrometrie nach dem in ISO 20042 beschriebenen generischen Prüfverfahren fest.
Das Verfahren ist anwendbar auf Messproben von Trinkwasser, Regenwasser, Oberflächen- und Grundwasser sowie Kühlwasser, Brauchwasser, häuslichem und industriellem Abwasser nach ordnungsgemäßer Probenahme, Probenbehandlung und Messprobenvorbereitung (ggf. Filtration und unter Berücksichtigung des Anteils gelöster Stoffe im Wasser). Dieses Verfahren ist nur für homogene oder durch rechtzeitige Filtration homogenisierte Proben anwendbar.
Der unterste Grenzwert, der ohne Aufkonzentrierung der Probe oder nur mit passiver Abschirmung des Detektionssystems gemessen werden kann, beträgt etwa 5⋅10−2 Bq/l für z. B.137Cs . Die Obergrenze der Aktivität entspricht einer Totzeit von 10 %. Höhere Totzeiten können verwendet werden, es ist jedoch ein Nachweis über die Genauigkeit der Totzeitkorrektur erforderlich.
Abhängig von verschiedenen Faktoren, wie der Energie der Gammastrahlen und der Emissions-wahrscheinlichkeit je Kernzerfall, der Größe und Geometrie der Probe und des Detektors, der Abschirmung, der Messdauer und anderer Versuchsparameter, kann es erforderlich sein, die Probe durch Eindampfen zu konzentrieren, wenn Aktivitäten unter 5⋅10−2 Bq/l gemessen werden müssen. Flüchtige Radionuklide (z. B. Radon und Radio Iod) können während der Vorbereitung der Quelle verloren gehen.
Dieses Verfahren ist für die Anwendung in Notfallsituationen geeignet.

Qualité de l'eau - Radionucléides émetteurs gamma - Méthode d’essai par spectrométrie gamma à haute résolution (ISO 10703:2021)

Le présent document spécifie une méthode de prétraitement physique et de conditionnement d’échantillons d’eau et de détermination de l’activité volumique de différents radionucléides émetteurs gamma d’énergie comprise entre 40 keV et 2 MeV, par spectrométrie gamma conformément à la méthode d’essai générique décrite dans l’ISO 20042.
La méthode d'essai est applicable à des échantillons pour essai d'eau potable, d'eau de pluie, d'eau de surface et d'eau souterraine ainsi que d'eau de refroidissement, d'eau industrielle, d’eaux usées domestiques et industrielles après échantillonnage approprié, manipulation de l'échantillon et préparation de l'échantillon pour essai (filtration si nécessaire et en tenant compte de la quantité de matières dissoutes dans l'eau). Cette méthode ne s’applique qu’aux échantillons homogènes ou aux échantillons  qui sont homogènes après filtration opportune.
La limite inférieure qui peut être mesurée sans concentration de l’échantillon ou en utilisant uniquement le blindage passif du système de détection est d’environ 5·10−2 Bq/l pour le 137Cs 1 à titre d’exemple. La limite supérieure de l’activité correspond à un temps mort de 10 %. Des temps morts plus élevés peuvent être utilisés mais la justesse de la correction du temps mort doit être prouvée.
En fonction de différents facteurs tels que l’énergie des rayonnements gamma et la probabilité d’émission par désintégration nucléaire, la taille et la géométrie de l’échantillon et du détecteur, le blindage, le temps de comptage et d’autres paramètres expérimentaux, il peut être nécessaire de concentrer l’échantillon par évaporation, s’il s’agit de mesurer des activités inférieures à 5·10−2 Bq/l. Cependant, les radionucléides volatils (par exemple, le radon et l’iode radioactif) peuvent être perdus pendant la préparation de la source.
Cette méthode est appropriée pour être appliquée aux situations d’urgence.
1La géométrie de l’échantillon : Marinelli de 3 l ; détecteur : GE HP type N d’une efficacité relative de 55 %; temps de comptage: 18 h.

Kakovost vode - Radionuklidi, ki sevajo žarke gama - Preskusna metoda z gama spektrometrijo visoke ločljivosti (ISO 10703:2021)

General Information

Status
Published
Publication Date
06-Jul-2021
Withdrawal Date
30-Jan-2022
Technical Committee
Drafting Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
07-Jul-2021
Completion Date
07-Jul-2021

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SLOVENSKI STANDARD
SIST EN ISO 10703:2021
01-oktober-2021
Nadomešča:
SIST EN ISO 10703:2016
SIST ISO 10703:2010
Kakovost vode - Radionuklidi, ki sevajo žarke gama - Preskusna metoda z gama
spektrometrijo visoke ločljivosti (ISO 10703:2021)
Water quality - Gamma-ray emitting radionuclides - Test method using high resolution
gamma-ray spectrometry (ISO 10703:2021)
Wasserbeschaffenheit - Gammastrahlung emittierende Radionukliden - Verfahren mittels
Gammaspektrometrie (ISO 10703:2021)
Qualité de l'eau - Radionucléides émetteurs gamma - Méthode d’essai par spectrométrie
gamma à haute résolution (ISO 10703:2021)
Ta slovenski standard je istoveten z: EN ISO 10703:2021
ICS:
13.060.60 Preiskava fizikalnih lastnosti Examination of physical
vode properties of water
17.240 Merjenje sevanja Radiation measurements
SIST EN ISO 10703:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 10703:2021

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SIST EN ISO 10703:2021


EN ISO 10703
EUROPEAN STANDARD

NORME EUROPÉENNE

July 2021
EUROPÄISCHE NORM
ICS 13.060.60; 17.240 Supersedes EN ISO 10703:2015
English Version

Water quality - Gamma-ray emitting radionuclides - Test
method using high resolution gamma-ray spectrometry
(ISO 10703:2021)
Qualité de l'eau - Radionucléides émetteurs gamma - Wasserbeschaffenheit - Gammastrahlung emittierende
Méthode d'essai par spectrométrie gamma à haute Radionukliden - Verfahren mittels
résolution (ISO 10703:2021) Gammaspektrometrie (ISO 10703:2021)
This European Standard was approved by CEN on 28 June 2021.

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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10703:2021 E
worldwide for CEN national Members.

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SIST EN ISO 10703:2021
EN ISO 10703:2021 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 10703:2021
EN ISO 10703:2021 (E)
European foreword
This document (EN ISO 10703:2021) has been prepared by Technical Committee ISO/TC 147 "Water
quality" in collaboration with Technical Committee CEN/TC 230 “Water analysis” the secretariat of
which is held by DIN.
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 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
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.
This document supersedes EN ISO 10703:2015.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN websites.
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, Turkey and the
United Kingdom.
Endorsement notice
...

SLOVENSKI STANDARD
oSIST prEN ISO 10703:2020
01-april-2020
Kakovost vode - Radionuklidi, ki sevajo žarke gama - Preskusna metoda z gama
spektrometrijo (ISO/DIS 10703:2020)
Water quality - Gamma-ray emitting radionuclides - Test method using gamma-ray
spectrometry (ISO/DIS 10703:2020)
Wasserbeschaffenheit - Bestimmung der Aktivitätskonzentration von Radionukliden -
Verfahren mittels hochauflösender Gammaspektrometrie (ISO/DIS 10703:2020)
Qualité de l'eau - Radionucléides émetteurs gamma - Méthode d'essai par spectrométrie
gamma (ISO/DIS 10703:2020)
Ta slovenski standard je istoveten z: prEN ISO 10703
ICS:
13.060.60 Preiskava fizikalnih lastnosti Examination of physical
vode properties of water
17.240 Merjenje sevanja Radiation measurements
oSIST prEN ISO 10703:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 10703:2020

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oSIST prEN ISO 10703:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 10703
ISO/TC 147/SC 3 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2020-02-24 2020-05-18
Water quality — Gamma-ray emitting radionuclides — Text
method using gamma-ray spectrometry
Qualité de l'eau — Radionucléides émetteurs gamma — Méthode d'essai par spectrométrie gamma
ICS: 13.060.60; 17.240
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 10703:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020

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oSIST prEN ISO 10703:2020
ISO/DIS 10703:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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.
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Published in Switzerland
ii © ISO 2020 – All rights reserved

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oSIST prEN ISO 10703:2020
ISO/DIS 10703:2020(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and units . 3
5 Principle . 4
6 Reference sources . 4
7 Reagents .
...

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