ISO INTERNATIONAL STANDARD 12807 Second edition 2018-09 Safe transport of radioactive materials Leakage testing on packages Sureté des transports de matieres radioactives - Controle de I'étancheité des colis Reference number IS0 12807:2018(E) so Copyright International Qrganization for Standardization @IS02018 IS0 12807:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 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 CP401·Ch.deBlandonnet8 CH-1214 Vernier, Geneva Phone:+4122 749 0111 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland Copyightilerational Organizationfor Standardization @ IS0 2018 - All rights reserved IS0 12807:2018(E) Contents Page Foreword ..V Introduction. ...vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Symbols and units ..4 5 Regulatory requirements .7 5.1 Relevant regulations. .7 5.2 Regulatory containment requirements ..7 6 Procedure for meeting the requirements of this document .1 6.1 General .7 6.2 Quality management system.. 6.3 Procedure .8 6.3.1 General. 6.3.2 Determination of permissible activity release rates .9 6.3.3 Determination of standardized leakage rates 10 6.3.4 Determination of permissible test leakage rates for each verification stage ..10 6.3.5 Selection of appropriate test methods .10 6.3.6 Performance of test and record of results. ..10 7 Determination of permissible activity release rates ..10 7.1 Step 1: List the radioactive contents, Ai. ..10 7.2 Step 2: Determine the total releasable activity, RI ..10 7.3 Step 3: Determine the maximum permissible activity release rates, R .11 8 Determination of standardized leakage rates ..11 8.1 General. .11 8.2 Step 4: Determine the activity release rate due to permeation, RP 12 8.3 Step 5: Determine the maximum permissible activity release rate due to leakage, RG... 12 8.4 Step 6: Determine the activity per unit volume of the containment system medium, C.... 12 8.5 Step 7: Determine the maximum permissible volumetric leakage rate of the medium, L.. 12 8.6 Step 8: Determine the maximum permissible equivalent capillary leak diameter, D. ..12 8.7 Step 9: Determine the permissible standardized leakage rate, QsLR. ..13 9 Containment-system verification requirements .13 9.1 Containment-system verification stages ..13 9.1.1 General. ..13 9.1.2 Design verification. ..14 9.1.3 Fabrication verification ..14 9.1.4 Preshipment verification ..14 9.1.5 Periodic verification.. .15 9.1.6 Maintenance verification ..15 9.2 Verification requirements ..15 9.2.1 General 9.2.2 Step 10: Determine permissible test leakage rate for each verification stage, QTDA, QTDN, QTF, QTs, QTP and QTM. .. 15 9.2.3 Step 11: Select appropriate test methods .15 10 Leakage test procedure requirements. .16 10.1 General ..16 10.2 Step 12: Perform tests and record results ..16 10.3 Test sensitivity.. .16 10.4 Test procedure requirements. ..16 10.4.1 General ..16 CopyightIntermational OrgSraizA rights reserved iii