EN ISO 13165-1:2020

SLOVENSKI STANDARD
01-maj-2020
Kakovost vode - Radij Ra-226 - 1. del: Preskusna metoda s štetjem s tekočinskim
scintilatorjem (ISO 13165-1:2013)
Water quality - Radium-226 - Part 1: Test method using liquid scintillation counting (ISO
13165-1:2013)
Wasserbeschaffenheit - Radium-226 - Teil-1: Verfahren mit dem
Flüssigszintillationszhler (ISO 13165-1:2013)
Qualité de l'eau - Radium 226 - Partie 1: Méthode d'essai par comptage des scintillations
en milieu liquide (ISO 13165-1:2013)
Ta slovenski standard je istoveten z: EN ISO 13165-1:2020
ICS:
13.060.60 Preiskava fizikalnih lastnosti Examination of physical
vode properties of water
17.240 Merjenje sevanja Radiation measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13165-1
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 13.060.60; 17.240
English Version
Water quality - Radium-226 - Part 1: Test method using
liquid scintillation counting (ISO 13165-1:2013)
Qualité de l'eau - Radium 226 - Partie 1: Méthode Wasserbeschaffenheit - Radium-226 - Teil-1: Verfahren
d'essai par comptage des scintillations en milieu mit dem Flüssigszintillationszhler (ISO 13165-1:2013)
liquide (ISO 13165-1:2013)
This European Standard was approved by CEN on 6 October 2019.

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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13165-1:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 13165-1:2013 has been prepared by Technical Committee ISO/TC 147 "Water quality”
of the International Organization for Standardization (ISO) and has been taken over as EN ISO 13165-
1:2020 by 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 August 2020, and conflicting national standards shall
be withdrawn at the latest by August 2020.
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.
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
The text of ISO 13165-1:2013 has been approved by CEN as EN ISO 13165-1:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 13165-1
First edition
2013-04-15
Water quality — Radium-226 —
Part 1:
Test method using liquid scintillation
counting
Qualité de l’eau — Radium 226 —
Partie 1: Méthode d’essai par comptage des scintillations en milieu
liquide
Reference number
ISO 13165-1:2013(E)
©
ISO 2013
ISO 13165-1:2013(E)
© ISO 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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Published in Switzerland
ii © ISO 2013 – All rights reserved

ISO 13165-1:2013(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Symbols, definitions and units . 1
4 Principle . 2
5 Reagents and equipment . 2
5.1 Reagents. 2
5.2 Equipment . 3
6 Sampling . 3
7 Instrument set-up and calibration . 4
7.1 Preparation of calibration sources . 4
7.2 Optimization of counting conditions . 4
7.3 Detection efficiency. 4
7.4 Blank sample preparation and measurement . 5
8 Procedure. 5
8.1 Direct counting. 5
8.2 Thermal preconcentration . 5
8.3 Sample preparation . 6
8.4 Sample measurement . 6
9 Quality control . 6
10 Expression of results . 6
10.1 Calculation of massic activity . 6
10.2 Standard uncertainty . 6
10.3 Decision threshold . 7
10.4 Detection limit . 7
10.5 Confidence limits. 8
10.6 Calculations using the activity concentration . 8
11 Interference control . 8
12 Test report . 9
Annex A (informative) Set-up parameters and validation data .10
Bibliography .14
ISO 13165-1:2013(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 13165-1 was prepared by Technical Committee ISO/TC 147, Water quality, Subcommittee SC 3,
Radioactivity measurements.
ISO 13165 consists of the following parts, under the general title Water quality — Radium-226:
— Part 1: Test method using liquid scintillation counting
— Part 2: Test method using emanometry
The following part is under preparation:
— Part 3: Test method using coprecipitation and gamma-spectrometry
iv © ISO 2013 – All rights reserved

ISO 13165-1:2013(E)
Introduction
Radioactivity from several naturally occurring and human-made sources is present throughout the
environment. Thus, water bodies (surface waters, groundwaters, sea waters) can contain radionuclides
of natural and artificial origin (i.e. human-made).
a) Natural radionuclides, including potassium-40, and those of t
...