EN ISO 8299:2021

SLOVENSKI STANDARD
01-april-2021
Tehnologija jedrskih goriv - Ugotavljanje deleža izotopov ter koncentracije jedrskih
snovi elementarnega urana in plutonija v raztopinah dušikove kisline s
termoionizacijsko masno spektrometrijo (ISO 8299:2019)
Nuclear fuel technology - Determination of the isotopic and elemental uranium and
plutonium concentrations of nuclear materials in nitric acid solutions by thermal-
ionization mass spectrometry (ISO 8299:2019)
Technologie du combustible nucléaire - Détermination de la teneur isotopique et des
concentrations en matériaux nucléaires de l'uranium et du plutonium dans une solution
d'acide nitrique par spectrométrie de masse à thermoionisation (ISO 8299:2019)
Ta slovenski standard je istoveten z: EN ISO 8299:2021
ICS:
27.120.30 Cepljivi materiali in jedrska Fissile materials and nuclear
gorivna tehnologija fuel technology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 8299
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 27.120.30
English Version
Nuclear fuel technology - Determination of the isotopic
and elemental uranium and plutonium concentrations of
nuclear materials in nitric acid solutions by thermal-
ionization mass spectrometry (ISO 8299:2019)
Technologie du combustible nucléaire - Détermination
de la teneur isotopique et des concentrations en
matériaux nucléaires de l'uranium et du plutonium
dans une solution d'acide nitrique par spectrométrie
de masse à thermoionisation (ISO 8299:2019)
This European Standard was approved by CEN on 18 January 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 8299:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 8299:2019 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 8299:2021 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 August 2021, and conflicting national standards shall
be withdrawn at the latest by August 2021.
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 8299:2019 has been approved by CEN as EN ISO 8299:2021 without any modification.

INTERNATIONAL ISO
STANDARD 8299
Third edition
2019-01
Nuclear fuel technology —
Determination of the isotopic and
elemental uranium and plutonium
concentrations of nuclear materials
in nitric acid solutions by thermal-
ionization mass spectrometry
Technologie du combustible nucléaire — Détermination de la
teneur isotopique et des concentrations en matériaux nucléaires de
l'uranium et du plutonium dans une solution d'acide nitrique par
spectrométrie de masse à thermoionisation
Reference number
ISO 8299:2019(E)
©
ISO 2019
ISO 8299:2019(E)
© ISO 2019
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
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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 8299:2019(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reference materials and reagents . 2
5.1 Spikes and reference materials . 2
5.2 Other chemical reagents . 3
5.3 Resin, applicable for separation/purification of Pu and U . 4
5.3.1 General. 4
5.3.2 Preparation of resin . 4
6 Apparatus . 5
7 Apparatus for mass spectrometry . 6
8 Sample preparation . 6
8.1 Subsampling and spiking . 6
8.1.1 Pellet or powder samples . 7
8.1.2 Concentrated nuclear fuel solution samples (such as reprocessing solution) . 7
8.1.3 Plutonium nitrate solution samples (such as product solution from a
reprocessing plant) . 7
8.1.4 Dried nitrate samples . 8
8.2 Chemical valency adjustment . 8
8.2.1 Valence adjustment with ferrous solution . 8
8.2.2 Valence adjustment with hydrogen peroxide . 8
8.3 Sample separation/purification . 9
8.3.1 Ion exchange with anion-exchange resin . 9
8.3.2 Purification with extraction separation resins (see 5.3.1.2) .10
8.4 Replicate treatments .10
9 Filaments preparation .10
9.1 Degassing of filaments .10
9.2 Sample loading .10
9.2.1 Normal sample loading .10
9.2.2 Graphite loading technique .10
9.2.3 Resin-bead loading on single filaments for Pu samples .11
9.3 Filament mounting (filament assemblies preparation) .11
10 Instrument calibration .11
10.1 Mass calibration .11
10.2 Gain calibration for Faraday multi-detectors .11
10.3 Faraday detector calibration .11
10.4 Mass discrimination calibration .12
11 Isotopic mass spectrometric measurements .12
11.1 Total evaporation measurements using a single or double filament assembly and a
multi-Faraday collector system .12
11.2 Bias correction method using a double filament assembly and a multi-Faraday
collector system .13
12 Calculation of the results .13
12.1 Calculation of ion current intensities .13
12.2 Calculation of mean, weighted mean and standard deviation on a set of ratios x ,
i
(i = 1…N) .
...