ISO INTERNATIONAL STANDARD 18256-1 First edition 2019-01 Nuclear fuel technology Dissolution of plutonium dioxide-containing materials - Part 1: Dissolution of plutonium dioxide powders Technologie du combustible nucleaire - Dissolution des matériaux contenant du dioxyde de plutonium Partie 1: Dissolution des poudres de dioxyde de plutonium Reference number ISO 18256-1:2019(E) ISO @ IS0 2019 IS0 18256-1:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ 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 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 18256-1:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope.. 2 Normative references 3 Terms and definitions 4 Summary of the method ..1 5 Apparatus and reagents. .2 5.1 Apparatus, .2 5.2 Reagents. .3 6 Sample dissolution .3 6.1 Procedure for common plutonium containing materials 3 6.2 Solution adjustment (optional) ..5 7 Quality control. .6 Bibliography @ IS0 2019 - All rights reserved iii