ISO INTERNATIONAL STANDARD 19017 First edition 2015-12-15 Guidance for gamma spectrometry measurement of radioactive waste Lignes directrices pour le mesurage de déchets radioactifs par spectrometrie gamma Reference number IS0 19017:2015(E) ISO International Organization for Standardization e=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02015 vided by IHS under I No reproduction or networking permitted without license from IHS IS0 19017:2015(E) COPYRIGHT PROTECTED DOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 · CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internationai ibr DrganizationforStandardization Licensee-ZHEJIANG INST OF STANDARDIZzRoISQ5 - All rights reserved Not for Resale, 2016/3/29 03:12:29 networking permited withoutlicense from IHS IS0 19017:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Terms and definitions 3 Application 1 3.1 General 3.2 Typical applications. 4 Measurement equipment. .8 4.1 General .8 4.2 Open detector geometry 4.3 Collimated detector geometry .10 4.4 Components of gamma measurement system ..13 4.4.1 Mechanical equipment. ..13 4.4.2 Radiation detection equipment ..14 4.4.3 Data acquisition and analysis unit .14 4.4.4 Electrical control. .14 4.4.5 Additional equipment ..14 5 Calibration ..14 5.1 General .14 5.2 Peak energy and shape calibration of the gamma spectrometry system 5.3 Efficiency calibration of the gamma spectrometry system ..15 5.4 Attenuation correction techniques. ..18 6 Data evaluation ..18 6.1 Data processing steps ..18 6.2 Calculation of net peak count rates. 19 6.3 Calculation of gamma activity inventory of the waste package 20 6.4 Calculation of measurement uncertainty 20 6.5 Calculation of detection limit. .21 7 Quality assurance .23 7.1 General 23 7.2 Record of calibration, validation, and waste measurements .23 7.3 Documentation and procedures 24 7.4 Quality control 24 7.5 Competence 25 Annex A (informative) Examples of application of the techniques and methods discussed within this International Standard .26 Bibliography .47 ii See=ZHEJIANG INST OF STANDARDIZATIONC1 5956617 vided by IHS under lic d without license from IHS