Determination of solubility in nitric acid of plutonium in unirradiated mixed oxide fuel pellets (U, Pu) O2 (ISO 21483:2013)

ISO 21483:2013 specifies an analytical method for determining the solubility in nitric acid of plutonium in pellets of unirradiated mixed oxide fuel (light-water reactor fuels). The results provide information about the expected dissolution behaviour of irradiated pellets under industrial reprocessing conditions. In this aspect, the specific conditions (e.g. time of the test) may vary depending upon the need to match to a specific reprocessor's requirements. The test is aimed at determining solubility under equilibrium conditions rather than the kinetics of dissolution and hence allows for a second dissolution period.

Bestimmung der Löslichkeit in Salpetersäure von Plutonium in unbestrahlten (U, Pu) O2‑Mischoxid-Pellets (ISO 21483:2013)

Diese Internationale Norm legt ein Analyseverfahren zur Bestimmung der Löslichkeit in Salpetersäure von Plutonium in unbestrahlten Mischoxid-Pellets (Leichtwasserreaktorbrennstoff) fest. Die Ergebnisse liefern Informationen über das erwartete Löslichkeitsverhalten von bestrahlten Pellets unter industriellen Wiederaufbereitungsbedingungen. In diesem Bereich dürfen die spezifischen Bedingungen (z. B. die Zeitspanne der Prüfung) variieren, abhängig davon, ob die spezifischen Anforderungen des Aufbereiters erfüllt werden müssen. Die Prüfung zielt darauf ab, die Löslichkeit unter Gleichgewichtsbedingungen statt der Kinetik der Auflösung zu bestimmen, wodurch sie eine zweite Auflösungsperiode ermöglicht.

Détermination de la solubilité dans I'acide nitrique du plutonium des pastilles (U, Pu) O2 de combustibles d'oxydes mixtes non irradiés (ISO 21483:2013)

L'ISO 21483:2013 spécifie une méthode analytique permettant de déterminer la solubilité dans l'acide nitrique du plutonium des pastilles de combustibles d'oxydes mixtes non irradiés (combustibles de réacteurs à eau légère). Les résultats obtenus renseignent sur le comportement à la dissolution des pastilles irradiées qui peut être attendu dans des conditions de retraitement industriel. De ce point de vue, les conditions spécifiques (par exemple la durée de l'essai) peuvent varier en fonction du besoin de s'adapter aux exigences d'une usine de retraitement spécifique. L'essai vise à déterminer la solubilité dans des conditions d'équilibre plutôt que la cinétique de dissolution et il autorise donc une seconde période de dissolution.

Ugotavljanje topnosti plutonija v dušikovi kislini v neobsevanih mešanooksidnih gorivnih peletih (U, Pu) O2 (ISO 21483:2013)

Standard ISO 21483:2013 določa analitično metodo za ugotavljanje topnosti plutonija v dušikovi kislini v neobsevanih mešanooksidnih gorivnih peletih (na osnovi lahkovodnih reaktorskih goriv). Rezultati podajajo informacije o pričakovani topnosti obsevanih peletov v industrijskih pogojih ponovne obdelave. S tega vidika se določeni pogoji (npr. čas preizkusa) lahko razlikujejo glede na potrebo po upoštevanju zahtev določenega izvajalca ponovne obdelave. Namen preskusa ni določanje kinetike topnosti, temveč topnosti v uravnoteženih pogojih, tako da omogoča drug čas raztopitve.

General Information

Status
Published
Public Enquiry End Date
14-Jun-2017
Publication Date
07-Nov-2017
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
19-Oct-2017
Due Date
24-Dec-2017
Completion Date
08-Nov-2017

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SLOVENSKI STANDARD
SIST EN ISO 21483:2017
01-december-2017
Ugotavljanje topnosti plutonija v dušikovi kislini v neobsevanih mešanooksidnih
gorivnih peletih (U, Pu) O2 (ISO 21483:2013)

Determination of solubility in nitric acid of plutonium in unirradiated mixed oxide fuel

pellets (U, Pu) O2 (ISO 21483:2013)

%HVWLPPXQJGHU/|VOLFKNHLWLQ6DOSHWHUVlXUHYRQ3OXWRQLXPLQXQEHVWUDKOWHQ 83X

2"0LVFKR[LG3HOOHWV ,62

Détermination de la solubilité dans I'acide nitrique du plutonium des pastilles (U, Pu) O2

de combustibles d'oxydes mixtes non irradiés (ISO 21483:2013)
Ta slovenski standard je istoveten z: EN ISO 21483:2017
ICS:
27.120.30 Cepljivi materiali in jedrska Fissile materials and nuclear
gorivna tehnologija fuel technology
SIST EN ISO 21483:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 21483:2017
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SIST EN ISO 21483:2017
EN ISO 21483
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2017
EUROPÄISCHE NORM
ICS 27.120.30
English Version
Determination of solubility in nitric acid of plutonium in
unirradiated mixed oxide fuel pellets (U, Pu) O2 (ISO
21483:2013)

Détermination de la solubilité dans I'acide nitrique du Bestimmung der Löslichkeit in Salpetersäure von

plutonium des pastilles (U, Pu) O2 de combustibles Plutonium in unbestrahlten (U, Pu) O2-Mischoxid-

d'oxydes mixtes non irradiés (ISO 21483:2013) Pellets (ISO 21483:2013)
This European Standard was approved by CEN on 13 September 2017.

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: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21483:2017 E

worldwide for CEN national Members.
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SIST EN ISO 21483:2017
EN ISO 21483:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 21483:2017
EN ISO 21483:2017 (E)
European foreword

The text of ISO 21483:2013 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 21483:2017 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 April 2018, and conflicting national standards shall be

withdrawn at the latest by April 2018.

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 21483:2013 has been approved by CEN as EN ISO 21483:2017 without any modification.

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SIST EN ISO 21483:2017
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SIST EN ISO 21483:2017
INTERNATIONAL ISO
STANDARD 21483
First edition
2013-11-01
Determination of solubility in nitric
acid of plutonium in unirradiated
mixed oxide fuel pellets (U, Pu) O2
Détermination de la solubilité dans I’acide nitrique du plutonium des
pastilles (U, Pu) O2 de combustibles d’oxydes mixtes non irradiés
Reference number
ISO 21483:2013(E)
ISO 2013
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SIST EN ISO 21483:2017
ISO 21483:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013

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.
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 2013 – All rights reserved
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SIST EN ISO 21483:2017
ISO 21483:2013(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Principle ........................................................................................................................................................................................................................ 1

3 Interferences ............................................................................................................................................................................................................ 1

4 Reagents ........................................................................................................................................................................................................................ 1

4.1 Concentrated nitric acid .................................................................................................................................................................. 1

4.2 Nitric acid high ........................................................................................................................................................................................ 1

4.3 Nitric acid low .......................................................................................................................................................................................... 1

4.4 Concentrated hydrofluoric acid ................................................................................................................................................ 1

4.5 Mixture of acid ......................................................................................................................................................................................... 1

4.6 Sodium hydroxide ................................................................................................................................................................................ 2

5 Apparatus ..................................................................................................................................................................................................................... 2

5.1 Analytical balance................................................................................................................................................................................. 2

5.2 Dissolution apparatus with total reflux condenser ................................................................................................. 2

5.3 Dissolution apparatus without total reflux condenser ........................................................................................ 2

5.4 Second dissolution apparatus (polytetrafluoroethylene, PTFE, high density

polyethylene, HDPE) .......................................................................................................................................................................... 2

5.5 Filter apparatus ...................................................................................................................................................................................... 2

6 Sampling ........................................................................................................................................................................................................................ 2

7 Procedure..................................................................................................................................................................................................................... 3

7.1 Preparation of the sample ............................................................................................................................................................. 3

7.2 Dissolution procedure ...................................................................................................................................................................... 3

7.3 Treatment of the residue ................................................................................................................................................................ 3

7.4 Plutonium determination .............................................................................................................................................................. 3

7.5 Repeat solubility test ......................................................................................................................................................................... 3

8 Expression of results ........................................................................................................................................................................................ 4

8.1 Method of calculation ...............
...

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