ISO INTERNATIONAL STANDARD 7503-2 Second edition 2016-01-15 Measurement of radioactivity Measurement and evaluation of surface contamination - Part 2: Test method using wipe-test samples Mesurage de la radioactivité - Mesurage et évaluation de la contaminationdesurface Partie 2: Methode d'essai utilisant des échantillons d'essai de frottis Reference number ISO 7503-2:2016(E) SO International Organization for Standardization @ IS0 2016 STANDARDIZATIONC15956617 IS0 7503-2:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, 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. ISO copyrightoffice 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 ensee-ZHEJIANG INSTOF STANDARDIzARoISQ16- All rights reserved Iby IHS unde Not for Resale, 2016/3/29 02:58:58 networking permitted without license from IHS IS0 7503-2:2016(E) Contents Page Foreword ..iv Introduction. .V 1 Scope. .1 2 Normative references 1 3 Terms and definitions, symbols and abbreviations 2 3.1 Terms and definitions 2 3.2 Symbols and abbreviated terms .3 4 Sources of surface contamination .3 5 Objectives of the surface contamination evaluation ..4 6 Strategy .4 7 Methods for evaluating surface contamination ..4 8 Wipe test material .5 9 Instrumentation. .5 9.1 General 9.2 Liquid scintillation counters . 6 10 Calibration .6 10.1 Calibration of installed instruments ..6 10.2 Calibration of portable instruments .. 6 11 Guidelines on wipe test sampling ..6 11.1 General ·6 11.2 Guidelines on sampling removable tritium contamination .7 12 Measurement procedure. .7 13 Evaluation of measurement data. 8 13.1 Calculation of the activity per unit area for measurement results of installed instruments8 13.2 Calculation of the activity per unit area for measurement results of portable instruments9 13.3 Application of IS0 11929 9 14 Wipe test uncertainties .9 15 Test report .9 Bibliography .11 iii ZHEJIANG INSTOFSTANDARDIZATION C15956617 thout license from IHS