ISO/ASTM INTERNATIONAL STANDARD 51707 Third edition 2015-03-15 Guide for estimation of measurement un- certainty in dosimetry for radiation pro- cessing Guidepour I'estimationde I'incertitude demesureen dosimetrie pourletraitementparirradiation Reference number ISO/ASTM 51707:2015(E) ISO ISO/ASTMInternational2015 INTERNATIONAL ISO/ASTM51707:2015(E) PDF disclaimer In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. Neither the IsO Central Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to_create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters wereoptimizedforprinting.Everycare has beentaken to ensure that the file is suitable foruse by Isomemberbodies International at the addresses given below. @ISO/ASTMInternational2015 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the ISO copyright office ASTM International,100 Barr Harbor Drive, PO Box C700. Case postale 56 · CH-1211 Geneva 20 West Conshohocken, PA 19428-2959, USA Tel. +41 22 749 01 11 Tel. +610 832 9634 Fax +41 22 749 09 47 Fax +610 832 9635 E-mail [email protected] E-mail [email protected] Web www.iso.org Web www.astm.org Published in Switzerland = @ ISO/ASTM International 2015 -All rights reserved ISO/ASTM 51707:2015(E) Contents Page Scope. 1 2 Referenced documents.. 3 Terminology.. 2 Significance anduse 4 4 Basic conceptscomponents of uncertainty.... 4 6 Evaluation of Type A and Type B standard uncertainty.. 4 Examples of uncertainty budget componentsassociated withabsorbed dose measurements. 5 8 Characterization ofuncertaintycomponentsbasedonprobabilitydistributions 6 Statement ofuncertainty 8 9 Uses of measurement uncertainty estimates 10 8 11 Keywords... 9 Annexes 6 Bibliography... 11 Figure 1 Normal distribution, also called Gaussian or“bell curve", the most important continuous random distribution (JCGM 100.2008) .......... 7 Rectangular distribution, also called continuous uniform distribution (JCGM 100:2008)... 7 Figure 2 Table A2.1 10 Table A2.2 11 @ ISO/ASTM International 2015 All rights reserved ISO/ASTM51707:2015(E) Foreword ISO (the International Organizationfor Standardization)is a worldwidefederationofnationalstandardsbodies International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.Publication as an International Standard requires approval by at least 75% of the member bodies casting a vote. participation from affected stakeholders. ASTM technical committees follow rigorous due process balloting procedures. A project between ISO and AsTM International has been formed to develop and maintain a group of ISO/ASTM radiation processing dosimetry standards. Under this project, ASTM Committee E61, Radiation unrestricted participation and input from appropriate ISO memberbodies. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. Neither SO nor ASTM International shall be held responsible for identifying any or all such patent rights. International Standard ISO/ASTM 51707 was developed by ASTM Committee E61, Radiation Processing, through Subcommittee E61.01,Dosimetry,andby Technical Committee ISO/TC 85, Nuclear energy,nuclear technologies and radiological protection. This third edition cancels and replaces the second edition (ISO/ASTM 51707:2005),which has been technically revised. iv ISO/ASTM International 2015All rights reserved ISO/ASTM51707:2015(E) An American National Standard Standard Guide for Estimation of Measurement Uncertainty in Dosimetry for Radi