BS EN 60761-3-2004 Equipment for continuous monitoring radioactivity in gaseous effluents-Part 3 Specific requirements for radioactive noble gas monitors《连续监测放射性气态流出流物的设备 第3部分 放射性惰.pdf

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1、BRITISH STANDARD BS EN 60761-3:2004 Incorporating Amendment No. 1 to BS IEC 60761-3:2002 (renumbers the BS IEC as BS EN 60761-3:2004) Equipment for continuous monitoring radioactivity in gaseous effluents Part 3: Specific requirements for radioactive noble gas monitors The European Standard EN 60761

2、-3:2004 has the status of a British Standard ICS 13.280 Licensed Copy: Wang Bin, na, Tue Apr 26 07:01:48 BST 2005, Uncontrolled Copy, (c) BSIBS EN 60761-3:2004 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under

3、 the authority of the Standards Policy and Strategy Committee on 4 December 2002 BSI 3 February 2005 ISBN 0 580 40884 1 National foreword This British Standard is the official English language version of EN 60761-3:2004. It is identical with IEC 60761-3:2002. The UK participation in its preparation

4、was entrusted to Technical Committee NCE/2, Health physics instrumentation, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publication

5、s referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary

6、 provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpret

7、ation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, the EN foreword page, the IEC title page, pages

8、 2 to 20, the Annex ZA page and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 15425 3 February 2005 Implementation of the European Standard Licensed Copy: Wang Bin, na, Tue Apr

9、 26 07:01:48 BST 2005, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 60761-3 NORME EUROPENNE EUROPISCHE NORM December 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secreta

10、riat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60761-3:2004 E ICS 13.280 English version Equipment for continuous monitoring radioactivity in gaseous effluents Part 3: Specific req

11、uirements for radioactive noble gas monitors (IEC 60761-3:2002) Equipements de surveillance en continu de la radioactivit dans les effluents gazeux Partie 3: Exigences particulires aux moniteurs de gaz rares radioactifs (CEI 60761-3:2002) Einrichtungen zur kontinuierlichen berwachung von Radioaktivi

12、tt in gasfrmigen Ableitungen Teil 3: Besondere Anforderungen an Monitore fr radioaktive Edelgase (IEC 60761-3:2002) This European Standard was approved by CENELEC on 2004-11-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving th

13、is European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versio

14、ns (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of A

15、ustria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na,

16、Tue Apr 26 07:01:48 BST 2005, Uncontrolled Copy, (c) BSINE 067-163:2004 2 Foreword The text of the International Standard IEC 60761-3:2002, prepared by SC 45B, Radiation protection instrumentation, of IEC TC 45, Nuclear instrumentation, was submitted to the formal vote and was approved by CENELEC as

17、 EN 60761-3 on 2004-11-01 without any modification. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2005-11-01 latest date by which the national standards conflicting with the

18、 EN have to be withdrawn (dow) 2007-11-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60761-3:2002 was approved by CENELEC as a European Standard without any modification. _ EN607613:2004Licensed Copy: Wang Bin, na, Tue Apr 26 07:01:48 BST 2005

19、, Uncontrolled Copy, (c) BSINORME INTERNATIONALE CEI IEC INTERNATIONAL STANDARD 60761-3 Deuxime dition Second edition 2002-01 Equipements de surveillance en continu de la radioactivit dans les effluents gazeux Partie 3: Exigences particulires aux moniteurs de gaz rares radioactifs Equipment for cont

20、inuous monitoring of radioactivity in gaseous effluents Part 3: Specific requirements for radioactive noble gas monitors Numro de rfrence Reference number CEI/IEC 60761-3:2002 2002:316706CEISBEN607613:2004Licensed Copy: Wang Bin, na, Tue Apr 26 07:01:48 BST 2005, Uncontrolled Copy, (c) BSICONTENTS F

21、OREWORD.3 1 Scope and object5 2 Normative references5 3 Terms and definitions .6 4 Classification of radioactive noble gas effluent monitors6 5 Overall equipment design6 6 Expression of measurements7 7 Sampling and detection assembly .7 8 Check source .8 9 Range of measurement.8 10 Standard test con

22、ditions .8 11 Tests performed with variation of the influence quantities9 12 Reference sources9 13 Radiation performance tests .9 14 Tests of the air circuit .12 15 Type test report and certificate12 Annex A (informative) Preparation of radioactive gas reference sources 19 Figure A.1 Calibration loo

23、p .20 Table 1 Reference conditions and standard test conditions .13 Table 2 Tests performed under standard test conditions .14 Table 3 Tests performed with variation of influence quantities.15 Table 4 Tests of air circuit 17 Table 5 References sources.18 2 2002:316706CEISBEN607613:2004Licensed Copy:

24、 Wang Bin, na, Tue Apr 26 07:01:48 BST 2005, Uncontrolled Copy, (c) BSIINTERNATIONAL ELECTROTECHNICAL COMMISSION _ EQUIPMENT FOR CONTINUOUS MONITORING OF RADIOACTIVITY IN GASEOUS EFFLUENTS Part 3: Specific requirements for radioactive noble gas monitors FOREWORD 1) The IEC (International Electrotech

25、nical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this

26、 end and in addition to other activities, the IEC publishes International Standards. 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 and non-governmental orga

27、nizations liaising with the IEC also participate in this preparation. The 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 agreements of the IEC on te

28、chnical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published

29、 in the form of standards, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International. Standards transparently to the maximum extend possible in their natio

30、nal and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in c

31、onformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60761-3 has been

32、 prepared by subcommittee 45B: Radiation protection instrumentation, of IEC technical committee 45: Nuclear instrumentation. This standard shall be read in conjunction with IEC 60761-1 (2002). This second edition cancels and replaces the first edition published in 1983. This second edition constitut

33、es a technical revision. The text of this standard is based on the first edition, and the following documents: FDIS Report on voting 45B/335/FDIS 45B/346/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. Annex A is

34、 for information only. This publication has been drafted in accordance with the ISO/IEC Directives, Part 3. 3 2002:316706CEISBEN607613:2004Licensed Copy: Wang Bin, na, Tue Apr 26 07:01:48 BST 2005, Uncontrolled Copy, (c) BSIThe committee has decided that the contents of this publication will remain

35、unchanged until 2006. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. IEC 60761 consists of the following parts, under the general title: Equipment for continuous monitoring of radioactivity in gaseous effluents. Part 1: General requirements P

36、art 2: Specific requirements for radioactive aerosol monitors including transuranic aerosols Part 3: Specific requirements for radioactive noble gas monitors Part 4: Specific requirements for radioactive iodine monitors Part 5: Specific requirements for tritium monitors 4 2002:316706CEISBEN607613:20

37、04Licensed Copy: Wang Bin, na, Tue Apr 26 07:01:48 BST 2005, Uncontrolled Copy, (c) BSIEQUIPMENT FOR CONTINUOUS MONITORING OF RADIOACTIVITY IN GASEOUS EFFLUENTS Part 3: Specific requirements for radioactive noble gas monitors 1 Scope and object This part of IEC 60761 is applicable to equipment inten

38、ded for simultaneous, delayed or discrete sequential measurement of radioactive noble gas in gaseous effluents discharged into the environment. It is applicable to radioactive noble gas effluent monitors intended to fulfill the following functions: the measurement of the volumic activity of radioact

39、ive gases in the gaseous effluents at the discharge point and its variation with time; the actuation of an alarm when a predetermined volumic activity or a predetermined total released radioactivity is exceeded; the determination of the gas activity discharged over a given period and/or information

40、on the composition of a mixture of different gases in the discharge. Radon is a natural radioactive noble gas. Its measurement is not included in this standard. The presence of radon, or its decay products, may interfere with the measurement of other (artificial) radioactive gases. The object of thi

41、s standard is to lay down specific standard requirements, including technical characteristics and general test conditions, and to give examples of acceptable methods for noble gas effluent monitors. The general requirements, technical characteristics, test procedures, radiation, electrical, mechanic

42、al, safety and environmental characteristics are given in IEC 60761-1. Unless other- wise stated, they apply to this part. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60761. For dated ref

43、erences, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 60761 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated refere

44、nces, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards IEC 60068-2-27:1987, Environmental testing Part 2: Tests. Test Ea and guidance: Shock IEC 60761-1:2002, Equipment for continuous monitoring of

45、radioactivity in gaseous effluents Part 1: General requirements IEC 61000 (all parts): Electromagnetic compatibility (EMC) EN 55022:1994, Limits and Methods of Measurement of Radio Disturbance Characteristics of Information Technology Equipment 5 2002:316706CEISBEN607613:2004Licensed Copy: Wang Bin,

46、 na, Tue Apr 26 07:01:48 BST 2005, Uncontrolled Copy, (c) BSI3 Terms and definitions For the purpose of this part of IEC 60761, the following definition applies. 3.1 radioactive noble gas monitor equipment designed for the continuous monitoring of radioactive noble gases in gaseous effluents dischar

47、ged into the environment 4 Classification of radioactive noble gas effluent monitors The equipment may be classified according to the type of radiation detected as: gamma; beta; specific nuclides. It may also be classified according to the method of operation: direct measurement with a detector in o

48、r adjacent to the effluent; continuous fractional sampling of a monitoring point at a remote location. 5 Overall equipment design As mentioned in IEC 60761-1, various monitor configurations are possible, depending on the exact circumstances and requirements for each installation. Irrespective of the

49、se variations, the equipment shall conform to the requirements of this standard as well as those of IEC 60761-1. 5.1 Direct measuring equipment If the measurement is made directly by detectors in or adjacent to the effluent stream, only the detector and the minimum necessary electronic assembly shall operate in these environmental conditions. Unless there are special circumstance

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