1、 IEC 61031 Edition 2.0 2020-07 INTERNATIONAL STANDARD Nuclear facilities Instrumentation and control systems Design,location and application criteria for installed area gamma radiation dose rate monitoring equipment for use during normal operation and anticipated operational occurrences IEC 61031:20
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9、echnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC 61031 Edition 2.0 2020-07 INTERNATIONAL STANDARD Nuclear facilities Ins
10、trumentation and control systems Design,location and application criteria for installed area gamma radiation dose rate monitoring equipment for use during normal operation and anticipated operational occurrences INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 13.280;27.120.10 ISBN 978-2-8322-8586-2 Re
11、gistered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.2 IEC 61031:2020 IEC 2020 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.9 2 Normative references.9 3 Terms and definitions.10 4 Abbreviated terms.11 5
12、Design principles.11 5.1 Function and application criteria.11 5.2 General requirements.12 5.2.1 General characteristics and lifecycle.12 5.2.2 Safety classification and applicable standards.12 5.3 Range of measurements.13 5.4 Location criteria.13 5.4.1 General.13 5.4.2 Detector assembly.14 5.4.3 Pro
13、cessing assembly.14 5.4.4 Alarm assembly.14 5.5 Energy response.14 5.6 Signal processing and display.15 5.7 Power supply.15 6 Functional test.15 7 Qualification.15 7.1 General.15 7.2 Environmental qualification.15 7.3 Seismic qualification.16 7.4 Electromagnetic interference.16 8 Calibration.16 8.1
14、General.16 8.2 Calibration and functional check.16 8.2.1 General.16 8.2.2 Initial calibration.16 8.2.3 Calibration check after installation.16 8.2.4 Functional check.16 8.2.5 Countermeasures to loss of monitoring during calibration or functional check.17 8.3 Radiation calibration.17 Annex A(informat
15、ive)Examples of locations and measuring ranges of area radiation monitors.18 Annex B(informative)Foldback of detector.20 Bibliography.21 Figure B.1 Foldback illustration.20 Figure B.2 GM recovery times.20 IEC 61031:2020 IEC 2020 3 Table 1 Overview of the standards covering the domain of radiation mo
16、nitoring in nuclear facilities.7 Table A.1 Light water cooled reactor plants.18 Table A.2 Gas cooled reactor plants.18 Table A.3 Sodium cooled fast reactor plants.19 4 IEC 61031:2020 IEC 2020 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ NUCLEAR FACILITIES INSTRUMENTATION AND CONTROL SYSTEMS DESIGN,LOCATION AND APPLICATION CRITERIA FOR INSTALLED AREA GAMMA RADIATION DOSE RATE MONITORING EQUIPMENT FOR USE DURING NORMAL OPERATION AND ANTICIPATED OPERATIONAL OCCURRENCES FOREWORD 1)The International E
