BSIS08769:2020 BSI Standards Publication Measurement of radioactivityAlpha-, beta- and photon emitting radionuclides Reference measurement standard specifications for the calibration ofsurface contaminationmonitors bsi. BSISO8769:2020 BRITISH STANDARD Nationalforeword ThisBritishStandardistheUKimplementationofIS08769:202Q.It supersedes BSJS08769:2016, which is withdrawn. TheUKparticipationinitspreparationwasentrustedtoTechnical CommitteeNCE/2,Radiationprotectionandmeasurement. Alistoforganizationsrepresentedonthis committeecanbeobtained on requesttoits secretary. This publication does not purport to include all the necessaryprovisions ofacontract.Usersareresponsibleforitscorrectapplication. TheBritishStandardsInstitution2020 PublishedbyBSIStandardsLimited2020 ISBN9780539012293 ICS 17.240 Compliancewitha BritishStandardcannotconferimmunityfrom legal obligations. This British Standard was published underthe authority of the StandardsPolicyandStrategyCommitteeon30June2020. Amendments/corrigendaissuedsincepublication Date Textaffected BSIS08769:2020 INTERNATIONAL ISO STANDARD 8769 Fourth edition 2020-06-22 Measurementofradioactivity Alpha-, beta- and photon emitting radionuclidesReference measurement standard specifications forthecalibrationof surface contamination monitors Mesuragede laradioactivite-Radionucleidesémetteursalpha, betaetphotoniques-Specificationsdesétalonsdereferencepour I'etalonnagedes controleursde contamination desurface Referencenumber IS0 8769:2020(E) ISO ISO2020 BSIS08769:2020 IS08769:2020(E) COPYRIGHTPROTECTEDDOCUMENT IS02020,Published inSwitzerland All rights reserved. Unless otherwise specified, 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 writtenpermission.Permissioncanberequestedfromeitherisoattheaddressbeloworiso'smemberbodyinthecountryof the requester. ISO copyrightoffice Ch.deBlandonnet8·CP401 CH-1214Vernier,Geneva, Switzerland Tel.+41227490111 Fax +41 22 749 09 47 [email protected] www.iso.org ii IS02020-Allrightsreserved BSISO8769:2020 IS08769:2020 Contents Page Foreword .iv Introduction. .V 1 Scope. .1 2 Normativereferences .1 3 Termsand definitions .1 4 Traceabilityofreferencemeasurementstandards 2 5 Specificationofreferencemeasurementstandards .3 5.1 General 3 5.2 5 Class1referencemeasurementstandards 5.2.1 General requirements 5 5.2.2 Activityandsurfaceemissionrate 6 5.2.3 Uniformity 6 5.2.4 Radionuclides .7 5.3 Class2referencemeasurementstandards 8 5.3.1 Generalrequirements 8 5.3.2 Activityandsurfaceemissionrate 8 5.3.3 Uniformity .9 5.3.4 Radionuclides .9 5.4 Workingmeasurementstandard .9 5.4.1 General requirements 9 5.4.2 Activityandsurfaceemissionrate .9 5.4.3 Uniformity .9 5.4.4 Radionuclides 10 6 Transfermeasurementdevices .10 6.1 Transfermeasurementdeviceforalpha-radiationandbeta-radiation 10 6.2 Transfermeasurementdeviceforphoton-radiation 10 6.3 Calibration 10 AnnexA(informative)Particularconsiderationsforreferencemeasurementstandards emittingelectronsofenergylessthan0,15MeVandphotonsofenergyless than 1,5 MeV. 11 Bibliography .13 @ IS0 2020 -All rights reserved iii BSIS08769:2020 IS08769:2020 Foreword Iso(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandards bodies (Iso member bodies).Thework of preparing International Standards is normally carried out throughsotechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnical committee has been established has the right to berepresented on that committee.International organizations,governmentalandnon-governmental,inliaisonwithIsO,alsotakepartinthework. ISO collaborates closelywiththeInternational Electrotechnical Commission (IEC)on all matters of electrotechnicalstandardization. The procedures used to develop this document and those intended for its further maintenance are described intheISO/IEC Directives,Part1.Inparticularthe differenta