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    IEC 61577-3-2011 Radiation protection instrumentation - Radon and radon decay product measuring instruments - Part 3 Specific requirements for radon decay produ.pdf

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    IEC 61577-3-2011 Radiation protection instrumentation - Radon and radon decay product measuring instruments - Part 3 Specific requirements for radon decay produ.pdf

    1、 IEC 61577-3 Edition 2.0 2011-12 INTERNATIONAL STANDARD NORME INTERNATIONALE Radiation protection instrumentation Radon and radon decay product measuring instruments Part 3: Specific requirements for radon decay product measuring instruments Instrumentation pour la radioprotection Instruments de mes

    2、ure du radon et des descendants du radon Partie 3: Exigences spcifiques concernant les instruments de mesure des descendants du radon IEC61577-3:2011 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publi

    3、cation 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

    4、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 que

    5、lque 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 su

    6、r 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 the IEC The International Electrotechnical Commission (IEC) is the lead

    7、ing global organization that prepares and publishes 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 corrige

    8、nda 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

    9、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 te

    10、rms 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 publicati

    11、on 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 A propos de la CEI La Commission Electrotechnique Internationale (CEI) est la premire organisation mondiale qui labore et publie des normes interna

    12、tionales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des publications CEI Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publ

    13、i. Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm Le Catalogue en-ligne de la CEI vous permet deffectuer des recherches en utilisant diffrents critres (numro de rfrence, texte, comit dtudes,). Il donne aussi des informations sur les projets et les publications retires ou re

    14、mplaces. Just Published CEI: www.iec.ch/online_news/justpub Restez inform sur les nouvelles publications de la CEI. Just Published dtaille deux fois par mois les nouvelles publications parues. Disponible en-ligne et aussi par email. Electropedia: www.electropedia.org Le premier dictionnaire en ligne

    15、 au monde de termes lectroniques et lectriques. Il contient plus de 20 000 termes et dfinitions en anglais et en franais, ainsi que les termes quivalents dans les langues additionnelles. Egalement appel Vocabulaire Electrotechnique International en ligne. Service Clients: www.iec.ch/webstore/custser

    16、v/custserv_entry-f.htm Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61577-3 Edition 2.0 2011-12 INTERNATIONAL STANDARD NORME INTER

    17、NATIONALE Radiation protection instrumentation Radon and radon decay product measuring instruments Part 3: Specific requirements for radon decay product measuring instruments Instrumentation pour la radioprotection Instruments de mesure du radon et des descendants du radon Partie 3: Exigences spcifi

    18、ques concernant les instruments de mesure des descendants du radon INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 13.280 PRICE CODE CODE PRIX ISBN 978-2-88912-839-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Co

    19、mmission Electrotechnique Internationale 2 61577-3 IEC:2011 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references . 8 3 Terms and definitions . 8 4 General design considerations . 10 4.1 Design considerations for the measurements 10 4.1.1 Deposition of radon decay products on sur

    20、faces 10 4.1.2 Airflow system . 11 4.2 Design considerations for handling and maintenance 11 4.2.1 Portability 11 4.2.2 Application under heavy environmental conditions . 11 4.2.3 Automatic operation . 11 4.2.4 Reliability 11 4.2.5 Capability for operational testing . 12 4.2.6 Adjustment and mainten

    21、ance facilities . 12 4.2.7 Acoustic noise level . 12 4.2.8 Electromagnetic interference . 12 4.2.9 Storage . 12 5 Technical components 12 5.1 Sampling assembly . 12 5.2 Radiation detection assembly 13 5.3 Data processing and recording 13 5.4 Measurement display 13 5.5 Power supply . 14 6 Test condit

    22、ions . 14 6.1 General . 14 6.2 Standard test conditions 15 6.3 Execution of tests 15 6.4 Test sources . 15 6.4.1 Solid sources . 15 6.4.2 Reference atmospheres . 15 7 Requirements and tests concerning radiation detection performance 16 7.1 Reference response to a test source . 16 7.1.1 Requirements

    23、16 7.1.2 Test method 16 7.2 Cross interference to other radon isotopes 16 7.2.1 Requirements 16 7.2.2 Test method 16 7.3 Linearity of indication 17 7.3.1 Requirements 17 7.3.2 Test method 17 7.4 Instrument statistical fluctuation 17 7.4.1 Requirements 17 7.4.2 Test method 17 7.5 Response time 18 615

    24、77-3 IEC:2011 3 7.5.1 Requirements 18 7.5.2 Test method 18 7.6 Signal accumulation 18 7.6.1 Requirements 18 7.6.2 Test method 19 8 Requirements and tests concerning air circuit performance 19 8.1 General . 19 8.2 Flow-rate stability 19 8.2.1 Requirements 19 8.2.2 Test method 19 8.3 Accuracy of the f

    25、low-rate measurement . 19 8.3.1 Requirements 19 8.3.2 Test method 19 8.4 Effect of filter pressure drop 20 8.4.1 Requirements 20 8.4.2 Test method 20 8.5 Low sampling flow-rate indication 20 8.5.1 Requirements 20 8.5.2 Test method 20 9 Requirements and tests concerning environmental performance . 20

    26、 9.1 Response to ambient gamma radiation 20 9.1.1 Requirements 20 9.1.2 Test method 21 9.2 Number concentration of aerosols . 21 9.2.1 Requirements 21 9.2.2 Test method 21 9.3 Ambient temperature . 21 9.3.1 Requirements 21 9.3.2 Test method 21 9.4 Relative humidity and condensed moisture 21 9.4.1 Re

    27、quirements 21 9.4.2 Test method 22 9.5 Atmospheric pressure 22 10 Requirements and tests concerning electrical performance 22 10.1 Warm-up time 22 10.1.1 Requirements 22 10.1.2 Test method 22 10.2 Power supply variations. 22 10.2.1 Requirements 22 10.2.2 Test method 23 10.3 Battery test 23 10.3.1 Re

    28、quirements 23 10.3.2 Test method 23 11 Requirements and tests concerning mechanical performance . 23 11.1 Requirements 23 11.2 Test method 23 12 Operation and maintenance manual . 24 13 Type test report and certificate . 24 4 61577-3 IEC:2011 Table 1 Reference conditions and standard test conditions

    29、 (unless otherwise indicated by the manufacturer) 25 Table 2 Tests of the radiation detection performance . 26 Table 3 Tests performed with variation of influence quantities 26 Table 4 Tests of the air circuit 26 61577-3 IEC:2011 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RADIATION PROTECTION INS

    30、TRUMENTATION RADON AND RADON DECAY PRODUCT MEASURING INSTRUMENTS Part 3: Specific requirements for radon decay product measuring instruments FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical commit

    31、tees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical

    32、Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental a

    33、nd non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreeme

    34、nts of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and

    35、 are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote i

    36、nternational uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated

    37、in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All

    38、users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or

    39、other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publicatio

    40、n. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such pa

    41、tent rights. International Standard IEC 61577-3 has been prepared by sub-committee 45B: Radiation protection instrumentation, of IEC technical committee 45: Nuclear instrumentation. This second edition of IEC 61577-3 cancels and replaces IEC 61577-3:2002 and IEC 61263:1994. This edition constitutes

    42、a technical revision. This edition includes the following significant technical changes with respect to the previous edition: Implementation of new requirements and tests concerning radiation detection performance. Implementation of new requirements and tests concerning environmental performance. 6

    43、61577-3 IEC:2011 Harmonization of the requirements and tests concerning electrical and mechanical performance with other standards in the area of radiation protection instrumentation. The text of this standard is based on the following documents: FDIS Report on voting 45B/700/FDIS 45B/716/RVD Full i

    44、nformation on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of the IEC 61577 series, under the general title Radiation protection

    45、 instrumentation Radon and radon decay product measuring instruments, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the

    46、 specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 61577-3 IEC:2011 7 INTRODUCTION Radon is a radioactive trace gas produced by the decay of 226Ra, 223Ra and 224Ra, respectively decay products of 238U, 235U and 232Th which

    47、are present in the earths crust. By decay, radon isotopes (i.e., 222Rn, 219Rn, 220Rn) produce three decay chains, each ending in a stable lead isotope. The radon isotope 220Rn generally is called thoron1. NOTE In normal conditions, due to the very short half-life of 219Rn, its activity and the activ

    48、ity of its RnDP2are considered negligible compared to the activity of the two other series. Its health effects are therefore not important. Thus in this standard 219Rn and its decay products are not considered. Radon isotopes and their corresponding short-lived Radon Decay Products (RnDP) (i.e., 218

    49、Po, 214Pb, 214Bi, 214Po for 222Rn, and 216Po, 212Pb, 212Bi, 212Po, 208Tl for 220Rn) are of considerable importance, as they constitute the major part of the radiological exposure to natural radioactivity for the general public and workers. In some workplaces such as underground mines, spas and waterworks, the workers are exposed to very significant levels of RnDP. Various quantities of these radionuclides are ai


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