ISO INTERNATIONAL STANDARD 15646 First edition 2014-06-15 Re-sintering test for UO2, (U,Gd)O2 and (U,Pu)O2 pellets Test de refrittage pour pastilles UO2, (U,Gd)02 et (U,Pu)02 Reference number ISO 15646:2014(E) LSO IS02014 ted without license from IHS Not for Resale IS0 15646:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 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. + 4122 749 0111 Fax +41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2014- All rights reserved No reproduction or networking permited without license from IHS Not for Resale IS0 15646:2014(E) Contents Page Foreword ..iv 1 Scope .1 2 Briefdescriptionofprocedure ...1 3 Incidents. 4 Apparatus 4.1 Equipmentformeasuringdensity .1 4.2 Heat treatment furnace 5 Reagents .2 6 Sampling .2 7 Procedure .2 7.1 Densitymeasurements beforeheattreatment .2 7.2 Heattreatment .3 7.3 Densitymeasurements afterheattreatment. .3 8 Evaluation .3 9 Precision of the procedure .4 10 Testreport .4 Annex A (informative) Relationship between pellet mass evolution and o/M ratio evolution Bibliography 6 iii ut license from IHS Not for Resale