EN ISO 12799:2019

Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method (ISO 12799:2015)

ISO 12799:2015 describes a procedure for measuring the nitrogen content of UO2, (U,Gd)O2, and (U,Pu)O2 pellets. Nitrogen in nuclear fuel may be present either as elemental nitrogen or chemically combined in the form of nitrogenous compounds. The technique described herein serves to determine the total content of nitrogen excluding those compounds whose decomposition temperature is above 2 200 °C (most notably Pu and U nitrides).

Kernenergie - Bestimmung des Stickstoffgehalts in UO2-, (U,Gd)O2- und (U,Pu)O2-gesinterten Pellets - Schutzgasextraktion und Leitfähigkeitsbestimmungsverfahren (ISO 12799:2015)

Diese Internationale Norm beschreibt ein Verfahren zur Messung des Stickstoffgehalts von UO2, (U,Gd)O2 und (U,Pu)O2 Pellets. Stickstoff kann in Kernbrennstoff entweder als elementarer Stickstoff oder als chemische Verbindung gebunden in der Form von stickstoffhaltigen Verbindungen vorhanden sein. Die hier beschriebene Technik dient zur Bestimmung des Gesamtgehalts an Stickstoff, d. h. ohne die Verbindungen, die eine Zersetzungstemperatur von über 2 200 °C haben (allen voran Pu- und U Nitride).

Énergie nucléaire - Dosage de la teneur en azote des pastilles frittées d'UO2, (U,Gd)O2 et (U,Pu)O2 - Méthode d'extraction par gaz inerte et méthode de mesurage de la conductivité (ISO 12799:2015)

L'ISO 12799:2015 décrit un mode opératoire permettant de mesurer la teneur en azote de pastilles d'UO2, (U,Gd)O2 et (U,Pu)O2. L'azote présent dans le combustible nucléaire peut soit se présenter sous la forme d'azote élémentaire, soit être combiné chimiquement sous la forme de composés azotés. La technique décrite dans l'ISO 12799:2015 permet de déterminer la teneur totale en azote en excluant les composés dont la température de décomposition est supérieure à 2 200 °C (principalement les nitrures Pu et U).

Jedrska energija - Določevanje dušika v sintranih peletih UO2, (U,Gd)O2 in (U,Pu)O2 - Metoda z ekstrakcijo inertnih plinov in ugotavljanjem prevodnosti (ISO 12799:2015)

Standard ISO 12799:2015 opisuje postopek za merjenje vsebnosti dušika v peletih UO2, (U,Gd)O2 in (U,Pu)O2. Dušik je v jedrskem gorivu lahko prisoten v obliki elementa ali v kemijskih dušikovih spojinah. Tehnika, opisana v tem dokumentu, se uporablja za določanje skupne vsebnosti dušika brez tistih spojin, ki se razgradijo pri temperaturi nad 2200 °C (predvsem Pu- in U-nitridi).

General Information

• Status: Published
• Publication Date: 11-Jun-2019
• Withdrawal Date: 30-Dec-2019
• ICS: 27.120.30 - Fissile materials and nuclear fuel technology
• 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 12799:2019 - Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method (ISO 12799:2015)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2019
Jedrska energija - Določevanje dušika v sintranih peletih UO2, (U,Gd)O2 in
(U,Pu)O2 - Metoda z ekstrakcijo inertnih plinov in ugotavljanjem prevodnosti (ISO
12799:2015)
Nuclear energy - Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2
sintered pellets - Inert gas extraction and conductivity detection method (ISO
12799:2015)
Kernenergie - Bestimmung des Stickstoffgehalts in UO2-, (U,Gd)O2- und (U,Pu)O2-
gesinterten Pellets - Schutzgasextraktion und Leitfähigkeitsbestimmungsverfahren (ISO
12799:2015)
Énergie nucléaire - Dosage de la teneur en azote des pastilles frittées d'UO2, (U,Gd)O2
et (U,Pu)O2 - Méthode d'extraction par gaz inerte et méthode de mesurage de la
conductivité (ISO 12799:2015)
Ta slovenski standard je istoveten z: EN ISO 12799:2019
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 12799
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2019
EUROPÄISCHE NORM
ICS 27.120.30
English Version
Nuclear energy - Determination of nitrogen content in
UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas
extraction and conductivity detection method (ISO
12799:2015)
Énergie nucléaire - Dosage de la teneur en azote des Kernenergie - Bestimmung des Stickstoffgehalts in
pastilles frittées d'UO2, (U,Gd)O2 et (U,Pu)O2 - UO2-, (U,Gd)O2- und (U,Pu)O2-gesinterten Pellets -
Méthode d'extraction par gaz inerte et méthode de Schutzgasextraktion und
mesurage de la conductivité (ISO 12799:2015) Leitfähigkeitsbestimmungsverfahren (ISO
12799:2015)
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 12799:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 12799:2015 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 12799:2019 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 12799:2015 has been approved by CEN as EN ISO 12799:2019 without any modification.

INTERNATIONAL ISO
STANDARD 12799
First edition
2015-03-15
Nuclear energy — Determination of
nitrogen content in UO , (U,Gd)O and
2 2
(U,Pu)O sintered pellets — Inert gas
extraction and conductivity detection
method
Énergie nucléaire — Dosage de la teneur en azote des pastilles frittées
d’UO , (U,Gd)O et (U,Pu)O — Méthode d’extraction par gaz inerte et
2 2 2
méthode de mesurage de la conductivité
Reference number
ISO 12799:2015(E)
©
ISO 2015
ISO 12799:2015(E)
© ISO 2015
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2015 – All rights reserved

ISO 12799:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Principle . 1
3 Interferences . 1
4 Reagents and materials . 1
5 Apparatus . 2
6 Sampling . 2
6.1 Sampling procedure . 2
6.2 Sample preparation . 2
7 Procedure. 2
7.1 Calibration . 3
7.1.1 Blank test . 3
7.1.2 Calibration of the analyser . 3
7.1.3 Check of the calibration using metal standard . 3
7.2 Determination . 3
8 Calculation . 4
9 Precision .
...