BS ISO 12799:2015 BSl Standards Publication Nuclear energy Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method bsi. ..making excellenCe a habit. BSISO12799:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 12799:2015. The UK participation in its preparation was entrusted to Technical Committee NCE/9, Nuclear fuel cycle technology. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The BritishStandards Institution 2015. Published by BSI Standards Limited 2015 ISBN9780580754630 ICS 27.120.30 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2015. Amendments/corrigendaissued sincepublication Date Textaffected BS ISO 12799:2015 ISO 12799 INTERNATIONAL STANDARD First edition 2015-03-15 Nuclear energy Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets Inert gas extraction and conductivity detection method Energie nucleéaire - Dosage de la teneur en azote des pastilles frittees d'U02, (U,Gd)02 et (U,Pu)02—Methode d'extraction par gaz inerte et methode de mesurage de la conductivité TSO ISOReferec2og bEy @IS02015 BS ISO 12799:2015 IS012799:2015(E) COPYRIGHTPROTECTEDDOCUMENT @IS0 2015 AHbyghtyraeansedlalestronicotherwipemifiedlaniclaindfutisgpplbbicatbpyimgyolbqnsthgintprndtiocedntnttiliaet) otineamyisowithoutprior written permission. Permission can be requested from either ISO at the address below or ISo's member body in the country of the requester. SSeoitalght officeCH-1211 Geneva 20 Tel.+4122749 01 11 Fax + 41 22 749 09 47 Ww.whiso.org Published in Switzerland ii @ IS0 2015 - All rights reserved BSISO12799:2015 IS0 12799:2015(E) Contents Page Foreword iv Scope 1 2 Principle 1 3 Interferences 1 4 Reagents and materials 5 Apparatus. 2 6 Sampling. .2 6.1 Samplingprocedure 2 6.2 Samplepreparation 7 2 Procedure. 2 7.1 Calibration .3 7.1.1 Blanktest 3 7.1.3 Cahbkatfdhofhalibraltiserusing.metal.s.tandard 3 7.2 Determination .3 8 Calculation 4 9 Precision. 4 10 Test report. Bibliography 5 @ IS0 2015 -All rights reserved ili BS ISO 12799:2015 IS0 12799:2015(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards thundiegh(IsO tecamicet codbiesfthsewofkaf ptapbeingbodyInitteresitedailhStandebjdsti soowhidhycarrtiechaital committeehasbeen establishedhastherighttoberepresented onthat committee.International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. ISO collaborates closely with the electrotechnical standardization.International Electrotechnical Commission (IEC)on allmatters of The procedures used to develop this document and those intended for its further maintenance are diferedesofso/cdBireies hutid bnotedaThistafdtferefwaesppsviferiaaccordanceWith the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Rttentionrights.dfswts tan he hplssibthay responsithefalemaentryfng alyshsh'documaxtpa thet Prgails subject of anypate on theIsolist of patent declarationsreceived (seewww.iso.org/patents). Anytrade used in this constitute nameendorsement.document is information givenfor the convenience ofusers and does not Foran explanation onthemeaningofIsO specifictermsand expressionsrelated toconformity tsSTradseTB wefianfolfinaUR'aboutSO'ewordshspfemetethe WnrinsiRlethe Technical Barriers ThecommitteeresponsibleforthisdocumentisIso/TC85,NuclearEnergy,SubcommitteeSC5,Fuel Technology. iv @ IS0 2015 - All rights reserved BS ISO12799:2015 INTERNATIONAL STANDARD IS012799:2015(E) Nuclear energy - Determination of nitrogen content