1、 IEC 62495 Edition 1.0 2011-04 INTERNATIONAL STANDARD Nuclear instrumentation Portable X-ray fluorescence analysis equipment utilizing a miniature X-ray tube IEC 62495:2011(E)Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No fu
2、rther reproduction or distribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 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 m
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5、shes International Standards for all electrical,electronic and related technologies.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.Catal
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9、re 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 62495 Edition 1.0
10、 2011-04 INTERNATIONAL STANDARD Nuclear instrumentation Portable X-ray fluorescence analysis equipment utilizing a miniature X-ray tube INTERNATIONAL ELECTROTECHNICAL COMMISSION R ICS 27.120 PRICE CODE ISBN 978-2-88912-441-1 Registered trademark of the International Electrotechnical Commission Copyr
11、ighted 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 62495 IEC:2011(E)CONTENTS FOREWORD.4 1 Scope and object.6 2 Normative references.6 3 Terms and definitio
12、ns.6 4 General requirements.9 4.1 System description.9 4.2 Safety considerations.9 4.3 Other requirements.9 4.4 Training.9 5 Portable XRF analysis system requirements.10 5.1 General.10 5.2 Classification.10 5.2.1 General.10 5.2.2 Closed beam portable XRF analysis system.10 5.2.3 Open beam portable X
13、RF analysis system.10 5.3 General safety requirements for all portable XRF analysis systems.10 5.3.1 Dose equivalent limitation.10 5.3.2 Radiation safety circuit.11 5.4 Requirements for a closed beam portable XRF analysis system.12 5.4.1 General.12 5.5 Requirements for an open beam portable XRF anal
14、ysis system.12 5.5.1 General.12 5.5.2 Beam interlock or sensor.13 5.5.3 Guard or sample holder.13 5.5.4 Secondary push button high voltage safety switch.13 6 Warning labels and indicators.13 6.1 General.13 7 Test requirements.14 7.1 General.14 7.2 External electromagnetic noise.14 7.3 Special tests.
15、14 7.4 Temperature test.15 7.4.1 Test equipment.15 7.4.2 Preparation.15 7.4.3 Procedure.15 7.4.4 Evaluation.15 7.4.5 Ambient temperature tests.15 7.5 Stray radiation.16 7.5.1 Equipment.16 7.5.2 Procedure.16 7.6 Open beam radiation level.16 7.6.1 General.16 7.6.2 Equipment.16 7.6.3 Measurement proced
16、ure.16 7.6.4 Dosimeter procedure.17 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.62495 IEC:2011(E)3 Annex A(normative)Recommended standard values and ranges of influence quantities.18 Bibliography.19 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproducti