EN ISO 18417:2019

Iodine charcoal sorbents for nuclear facilities - Method for defining sorption capacity index (ISO 18417:2017)

The scope of ISO 18417:2017 covers
-      iodine sorbents for nuclear power plants, nuclear facilities, research and other nuclear reactors,
-      iodine sorbents for laboratories, including nuclear medicine, and
-      iodine sorbents for sampling equipment on sample lines.
ISO 18417:2017 applies to iodine sorbents manufacturers and operators in order to measure the actual performance of these sorbents and their sorption capacity for radioiodine.
ISO 18417:2017 applies to granulated and crushed iodine sorbents based on activated charcoal (hereinafter referred to as "sorbents") used for trapping gaseous radioiodine and its compounds. This document establishes the method and conditions for defining sorption capacity index in a laboratory.

Jodkohlenstoffsorptionsmittel für kerntechnische Anlagen - Verfahren zur Bestimmung des Sorptionsvermögensindexes (ISO 18417:2017)

Der Anwendungsbereich dieses Dokuments deckt Folgendes ab:
- Jodsorptionsmittel für Kernkraftwerke, Kernanlagen, Forschungseinrichtungen und andere Kernreaktoren,
- Jodsorptionsmittel für Labore, einschließlich Nuklearmedizin, und
- Jodsorptionsmittel für Probenahmegeräte auf Probenahmeanlagen.
Dieses Dokument gilt für Hersteller von Jodsorptionsmitteln sowie Betreiber, und hilft dabei, die tatsächliche Leistung der Sorptionsmittel und ihre Sorptionsfähigkeit für Radioiod zu messen.
Dieses Dokument gilt für granulierte und zerkleinerte Jodsorptionsmittel auf Basis von Aktivkohle (im Folgenden „Sorptionsmittel“" genannt), die zum Aufnehmen von gasförmigem Radiojod und seinen Verbindungen verwendet werden. Dieses Dokument legt das Verfahren und die Bedingungen für die Definition des Sorptionskapazitätsindex in einem Labor fest.

Pièges à iode pour installations nucléaires - Méthode pour définir la capacité de rétention (ISO 18417:2017)

Le domaine d'application de l'ISO 18417:2017 couvre
-      les dispositifs adsorbants d'iode pour centrales nucléaires, installations nucléaires, centres de recherche et autres réacteurs nucléaires;
-      les dispositifs adsorbants d'iode pour laboratoires, y compris pour les applications en médecine nucléaire; et
-      les dispositifs adsorbants d'iode pour matériel d'échantillonnage sur les lignes de prélèvement.
ISO 18417:2017 s'applique aux fabricants et exploitants d'installations nucléaires avec dispositifs adsorbants d'iode afin qu'ils puissent mesurer la performance réelle de ces adsorbants et leur capacité de rétention de l'iode radioactif.
ISO 18417:2017 s'applique aussi bien aux adsorbants d'iode en granulés que ceux en grains concassés basés sur le charbon actif (ci-après désignés, les «adsorbants») utilisés pour piéger l'iode radioactif gazeux et ses composés. Le présent document spécifie la méthode et les conditions permettant de définir, au laboratoire, l'indice de capacité de rétention.

Jodni ogleni sorbenti za jedrske objekte - Metoda za določanje indeksa sorpcijske zmogljivosti (ISO 18417:2017)

Standard ISO 18417:2017 zajema naslednje vidike:
– jodni sorbenti za jedrske elektrarne, jedrske objekte, raziskave in druge jedrske reaktorje,
– jodni sorbenti za laboratorije, vključno z nuklearno medicino, in
– jodni sorbenti za opremo za vzorčenje na vzorčnih linijah.
Standard ISO 18417:2017 se uporablja za izdelovalce in upravljavce jodnih sorbentov z namenom merjenja dejanske učinkovitosti sorbentov in njihove sorpcijske zmogljivosti za radioaktivni jod.
Standard ISO 18417:2017 se uporablja za zrnate ali drobljene jodne sorbente, ki so osnovani na aktivnem oglju (v nadaljevanju »sorbenti«) in se uporabljajo za zajetje plinskega radioaktivnega joda in njegovih spojin. Ta dokument določa metodo in pogoje za določanje indeksa sorpcijske zmogljivosti v laboratoriju.

General Information

• Status: Published
• Publication Date: 11-Jun-2019
• Withdrawal Date: 30-Dec-2019
• ICS: 13.280 - Radiation protection
• 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: 12-Jun-2019
• Due Date: 28-Nov-2020
• Completion Date: 12-Jun-2019
• Ref Project: SIST EN ISO 18417:2019 - Iodine charcoal sorbents for nuclear facilities - Method for defining sorption capacity index (ISO 18417:2017)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2019
Jodni ogleni sorbenti za jedrske objekte - Metoda za določanje indeksa sorpcijske
zmogljivosti (ISO 18417:2017)
Iodine charcoal sorbents for nuclear facilities - Method for defining sorption capacity
index (ISO 18417:2017)
Jodkohlenstoffsorptionsmittel für kerntechnische Anlagen - Verfahren zur Bestimmung
des Sorptionsvermögensindexes (ISO 18417:2017)
Pièges à iode pour installations nucléaires - Méthode pour définir la capacité de rétention
(ISO 18417:2017)
Ta slovenski standard je istoveten z: EN ISO 18417:2019
ICS:
13.280 Varstvo pred sevanjem Radiation protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18417
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2019
EUROPÄISCHE NORM
ICS 13.280
English Version
Iodine charcoal sorbents for nuclear facilities - Method for
defining sorption capacity index (ISO 18417:2017)
Pièges à iode pour installations nucléaires - Méthode Jodkohlenstoffsorptionsmittel für kerntechnische
pour définir la capacité de rétention (ISO 18417:2017) Anlagen - Verfahren zur Bestimmung des
Sorptionsvermögensindexes (ISO 18417:2017)
This European Standard was approved by CEN on 8 March 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18417:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 18417:2017 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 18417:2019 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 December 2019, and conflicting national standards
shall be withdrawn at the latest by December 2019.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 18417:2017 has been approved by CEN as EN ISO 18417:2019 without any modification.

INTERNATIONAL ISO
STANDARD 18417
First edition
2017-03
Iodine charcoal sorbents for nuclear
facilities — Method for defining
sorption capacity index
Pièges à iode pour installations nucléaires — Méthode pour définir la
capacité de rétention
Reference number
ISO 18417:2017(E)
©
ISO 2017
ISO 18417:2017(E)
© ISO 2017, Published in Switzerland
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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ii © ISO 2017 – All rights reserved

ISO 18417:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3  Terms and definitions . 1
4 Principles of the method . 2
5 Preparation of the test . 4
5.1 General . 4
5.2 Removal of air impurity and humidity into the installation . 4
5.3 Radioactive methyl iodide used for sorbent testing . 5
5.4 Preparation of sorbent samples . 5
5.5 Measuring devices. 6
5.6 Conditions for achieving equilibrium during the test . 6
5.7 Safe conditions for workers and members of the public . 6
6 Test conditions . 7
7  Sorbent testing . 7
8 Test performance . 9
9 Determination of the sorption capacity index.10
9.1 Sorption capacity index determination .10
9.2 Calculating sorption capacity index .11
9.3 Uncertainties of measurements .12
10  Documenting test results .13
Annex A (normative) Format of test report (for the customer) .14
Annex B (normative) Format of internal test report .15
Annex C (normative) Measurements results.16
Annex D (informative) Example of expected results for sorption capacity index .17
Bibliography .19
ISO 18417:2017(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
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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
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URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 85, Nuclear energy, nuclear technologies,
and radiological protection, Subcommittee SC 2, Radiological protection.
iv © ISO 2017 – All rights reserved

ISO 18417:2017(E)
Introduction
Iodine sorbents are extensively used in nuclear facilities to remove radioiodine from gases and air in
off-gas cleaning systems and ventilation installations. The sorbents are very important for protection
of the members of the public and environment from iodine radionuclides radiation.
In the normal operation of nuclear installations, the main hazard comes from radioactive isotopes of
131 133 129
iodine; as examples, for reactors I and a minor extent I, for fuel processing facilities I, etc.
Iodine is one of the main contributors of the radiation impact on the environment. Under abnormal and
132 134 135
accident conditions, some other isotopes I, I and I have also some significant effects on the
[3]
total iodine dose (thyroid dose) .
The volatile radioiodine forms can occur in the gaseous radioactive wastes as elemental iodine, the
simplest organic compound methyl iodide, and some others such as hydrogen iodide under reducing
conditions.
Radioactive iodine can create a serious danger to the members of the public and workers in abnormal
and accident conditions at nuclear facilities as far as the exposure in these conditions could be much
higher than the exposure due to the natural background radiation.
The need to prevent widespread dispersal of gaseous radioiodine f
...