IEC_TR_62283-2010.pdf

IEC/TR 62283Edition 2.0 2010-06TECHNICAL REPORT Optical fibres Guidance for nuclear radiation tests IEC/TR 62283:2010(E)Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC,Geneva,Switzerland 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 IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.Droits de reproduction rservs.Sauf indication contraire,aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd,lectronique ou mcanique,y compris la photocopie et les microfilms,sans laccord crit de la CEI ou du Comit national de la CEI du pays du demandeur.Si vous avez des questions sur le copyright de la CEI ou si vous dsirez obtenir des droits supplmentaires sur cette publication,utilisez les coordonnes ci-aprs ou contactez le Comit national de la CEI de votre pays de rsidence.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.?Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.?Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.?Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC/TR 62283Edition 2.0 2010-06TECHNICAL REPORT Optical fibres Guidance for nuclear radiation tests INTERNATIONAL ELECTROTECHNICAL COMMISSION VICS 33.180.10 PRICE CODEISBN 978-2-88912-031-4 Registered trademark of the International Electrotechnical Commission Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 TR 62283 IEC:2010(E)CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Radiation units,dose calculation.7 4 Radiation shielding.9 5 Radiation environments and exposure.9 5.1 Natural radioactivity.9 5.2 Nuclear reactors(fission).9 5.3 Fusion reactors.9 5.4 High-energy physics experiments.10 5.5 Space environments.10 5.6 Medicine.10 5.7 Military environments.11 5.8 Industrial environments.11 6 Irradiation facilities and dosimetry.11 6.1 General.11 6.2 Continuous gamma irradiation.12 6.3 Neutron irradiation.12 6.4 Proton irradiation.13 6.5 Electron irradiation.14 6.6 Pulsed irradiation.15 7 Radiation effects on optical fibres.15 8 Radiation-induced transmission loss.16 8.1 Overview.16 8.2 Fibre type.17 8.3 Radiation history.17 8.4 Wavelength dependence.17 8.5 Temperature dependence.18 8.6 Light power dependence,photobleaching.19 8.7 Dose rate dependence.21 8.8 Pulsed irradiations.23 8.9 Radiation type dependence.24 8.10 Loss annealing.25 8.11 Conclusions.25 9 Measurement techniques and quality assurance of attenuation measurements.26 10 Radiation effects on passive fibre optic components.26 10.1 Connectors.26 10.2 Couplers and multiplexers.27 10.3 Fibre Bragg gratings.27 Bibliography.29 Figure 1 Wavelength dependence of the radiation-induced loss of a Ge-doped graded index fibre(50/125 m).17 Figure 2 Temperature dependence of the radiation-induced loss.19 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permi