BS IEC 61559-1-2009 Radiation protection instrumentation in nuclear facilities - Centralized systems for continuous monitoring of radiation and or levels of radioactivity - General.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsWB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1Radiation protection instrumentation in nuclearfacilities Centralized systems for continuous monitoring of radiat

2、ion and/orlevels of radioactivity Part 1: General requirementsBS IEC 61559-1:2009National forewordThis British Standard is the UK implementation of IEC 61559-1:2009.The UK participation in its preparation was entrusted to Technical CommitteeNCE/2, Radiation protection and measurement.A list of organ

3、izations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2009ISBN 978 0 580 68868 3ICS 13.280Compliance with a British Standard cann

4、ot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 September 2009Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS IEC 61559-1:2009IEC 61559-1Edition 1.0 2009-05INTERNATIO

5、NAL STANDARD NORME INTERNATIONALERadiation protection instrumentation in nuclear facilities Centralized systems for continuous monitoring of radiation and/or levels of radioactivity Part 1: General requirements Instrumentation pour la radioprotection dans les installations nuclaires Ensembles centra

6、liss pour la surveillance en continu des rayonnements et/ou des niveaux de radioactivit Partie 1: Exigences gnrales INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE VICS 13.280 PRICE CODECODE PRIXISBN 2-8318-1040-7 Registered trademark of the International Electro

7、technical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61559-1 IEC:2009 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.9 2 Normative references .9 3 Terms, definitions and abbreviations 11 3.1 Terms and definitions 11 3.2 Test nomenclature.12 3.3 Abbreviated terms .12 4 Des

8、ign requirements 12 4.1 General remarks12 4.1.1 General .12 4.1.2 Safety classification.12 4.1.3 System configuration .13 4.1.4 Location of detector assemblies 14 4.2 Design requirements for the assemblies 14 4.2.1 Detector assembly.14 4.2.2 Processing assembly.14 4.2.3 Alarm assemblies 16 4.3 Centr

9、al computer.17 4.3.1 General .17 4.3.2 Functional requirements of the central computer .17 4.3.3 Checking normal operation of the equipment .18 4.4 Electrical characteristics18 4.4.1 General .18 4.4.2 Electromagnetic compatibility 19 5 General Test procedures 19 5.1 Test requirements .19 5.1.1 Gener

10、al .19 5.1.2 Test performed under standard test conditions 20 5.1.3 Test performed with variation of influence quantities .20 5.2 Test procedures for the detector assembly 20 5.3 Test procedures for the monitoring assembly 20 5.3.1 Alarm trip range.20 5.3.2 Equipment failure alarms .21 5.3.3 Alarm r

11、esponse time and stability 21 5.4 Test procedures for the central computer 21 5.4.1 Individual tests of access channels21 5.4.2 Whole tests of access channels.21 5.4.3 Tests for functional validation and verification. 21 5.5 Test procedures for effects of power supply and environmental variations.22

12、 5.5.1 Power supply variations.22 5.5.2 Power supply variations (interruptions and transients) .23 5.5.3 Surges and oscillatory waves 23 5.5.4 Ambient temperature and humidity 24 5.5.5 Electromagnetic compatibility 24 5.5.6 External electromagnetic immunity and electrostatic discharge24 BS IEC 61559

13、-1:200961559-1 IEC:2009 3 5.5.7 Electromagnetic emission24 6 Documentation .25 6.1 Report on type testing .25 6.2 Certificate .25 6.3 Operating and maintenance manual 25 Annex A (informative) Selection of a measuring unit 31 Annex B (informative) Guidance on location of detector assemblies.32 Biblio

14、graphy34 Figure 1 Monitoring assembly inside monitored area26 Figure 2 Monitoring assembly outside monitored area26 Figure 3 Centralized configuration .27 Figure 4 Centralized configuration .28 Table 1 Reference conditions and standard test conditions29 Table 2 Tests performed under standard test co

15、nditions 29 Table 3 Tests performed with variations of influence quantities30 BS IEC 61559-1:2009 4 61559-1 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RADIATION PROTECTION INSTRUMENTATION IN NUCLEAR FACILITIES CENTRALIZED SYSTEMS FOR CONTINUOUS MONITORING OF RADIATION AND/OR LEVELS OF RADI

16、OACTIVITY Part 1: General requirements FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all ques

17、tions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication

18、(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 and non-governmental organizations liaising with the IEC also participate in this preparation. IEC coll

19、aborates 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 IEC on technical matters express, as nearly as possible, an international consensus of opinion

20、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 are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensur

21、e 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 international uniformity, IEC National Committees undertake to apply IEC Publications transparently to

22、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 in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered re

23、sponsible for any equipment declared to be in conformity with an IEC Publication. 6) All 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 tech

24、nical committees and IEC National Committees for any personal injury, property damage or 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

25、 Publications. 8) Attention is drawn to the Normative references cited in this publication. 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 subje

26、ct of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61559-1 has been prepared by subcommittee 45B: Radiation protection instrumentation, of IEC technical committee 45: Nuclear instrumentation. This standard cancels and repl

27、aces the first edition of IEC 61559 published in 1996. The document has been updated to take account of the requirements of IEC standards published since 1996. Specifically, to meet the functional safety lifecycle requirements of IEC 61508 and/or IEC 61513 have been introduced. Additionally, functio

28、nal validation and verification tests have been added. BS IEC 61559-1:200961559-1 IEC:2009 5 The text of this standard is based on the following documents: FDIS Report on voting 45B/608/FDIS 45B/616/RVDFull information on the voting for the approval of this standard can be found in the report on vot

29、ing 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 61559 series can be found, under the general title Radiation protection instrumentation in nuclear facilities Centralized systems for continuous monit

30、oring of radiation and/or levels of radioactivity, on the IEC website. Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will be updated at the time of the next edition. The committee has decided that the contents of this pub

31、lication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. BS IEC 61559-1:2009 6

32、 61559-1 IEC:2009 INTRODUCTION a) Technical background, main issues and organisation of this standard This IEC standard specifically applies to centralized systems intended for continuous monitoring of radiation and/or levels of radioactivity in nuclear facilities, primarily in support of radiologic

33、al protection in the working areas. These centralized systems play an auxiliary or indirect role in the achievement or maintenance of a nuclear facilitys safety. These are classified as category C in IEC 61226 since they include functions that have some safety significance. This standard is intended

34、 for use by purchasers in developing specifications for their plant specific centralized systems radiation monitoring systems and by manufacturers to identify needed product characteristics when developing systems. This standard is one associated with a series of standards which cover process and sa

35、fety monitoring, and radiation protection and effluents monitoring in nuclear facilities. The full series is detailed in paragraph b) below. b) Situation of the current standard in the structure of the IEC SC 45A/SC 45B standard series IEC 60951 series of standards are at the third level in the hier

36、archy of SC 45A standards. They provide guidance on the design and testing of radiation monitoring equipment used for accident and post accident conditions. IEC 60951-1 General requirements IEC 60951-2 Equipment for continuous off-line monitoring of radioactivity in gaseous effluents and ventilation

37、 air IEC 60951-3 Equipment for continuous high range area gamma monitoring IEC 60951-4 Equipment for continuous in-line or on-line monitoring of radioactivity in process stream Other standards developed by SC 45A and SC 45B provide guidance on instruments used for monitoring radiation as part of nor

38、mal operations. IEC 60761 series provide requirements for equipment for continuous off-line monitoring of radioactivity in gaseous effluents in normal conditions. IEC 60861 provides requirements for equipment for continuous off-line monitoring of radioactivity in liquid effluents in normal condition

39、s. IEC 60768 provides requirement for equipment for continuous in-line and on-line monitoring of radioactivity in process stream in normal and incident conditions. ISO standard 2889 gives guidance on gas and particulate sampling. The relationship between these various radiation monitoring standards

40、is given in the table below: Developer ISO SC 45A process and safety monitoring Scope Sampling circuits and methods Accident and post accident conditions Normal and incident conditions SC 45B radiation protection and effluents monitoring Gas, particulate and iodine with sampling (OFF LINE) ISO 2889

41、IEC 60951-1 and -2 IEC 60761 series Liquid with sampling N/A N/A IEC 60861 BS IEC 61559-1:200961559-1 IEC:2009 7 (OFF LINE) Process stream (gaseous effluents, steam or liquid) without sampling (ON or IN-LINE) N/A IEC 60951-1 and -4 IEC 60768 N/A Area monitoring N/A IEC 60951-1 and -3 IEC 60532 Centr

42、al system N/A IEC 61504 IEC 61559 c) Recommendations and limitations regarding the application of this standard It is important to note that this standard establishes no additional functional safety requirements for safety systems. d) Description of the structure of the IEC SC 45A/SC 45B standard se

43、ries and relationships with other IEC documents and other bodies documents (IAEA, ISO) The basic safety publication is IEC 61508-7, Functional safety of electrical/electronic/ programmable electronic safety-related systems. It defines the requirements for an overall safety life-cycle framework and a

44、 system life-cycle framework. IEC 61508 should be complied with when developing instruments with safety functions for centralized systems of radiation monitoring outside the nuclear power plant sector whilst complying with the requirements defined in this standard. The top-level document of the IEC

45、SC 45A standard series is IEC 61513. It provides general requirements for I it includes functions that have some safety significance, but are not category A or B IEC 61226 NOTE Category C denotes systems that have: a) functions used to prevent or mitigate a minor radioactive release, or minor degrad

46、ation of fuel, within the NPP design basis, b) functions to warn personnel or to ensure its safety during or following events that involve or result in release of radioactivity in the NPP, or risk of radiation exposure. 3.1.3 detector assembly (DA) component of the installed radiation monitor that c

47、ontains detector and may contain associated electronics (amplifier, discriminator, output pulse shaper), and may also include programmable electronic circuits 3.1.4 processing assembly (PA) assembly which converts the output signals of one or more detector assemblies into a form, generally digital,

48、suitable for transmission down a data link to the central computer; central computer, and/or which generates alarm outputs to the alarm units at present signal levels 3.1.5 alarm assembly (AA) assembly which is initiated by the PA. It provides audible and/or visual alarms, in the event of an alarm t

49、hreshold being breached or in the case of an equipment fault. It is normally sited local to the DA 3.1.6 central computer (CC) central processing and control system for the calculation, display, and storage of data from the processing units 3.1.7 monitoring assembly (MA) integrated assembly consisting of combinations of processing, alarm, and detector assemblies BS IEC 61559-1:2009 12 61559-1 IEC:2009 3.2 Test nomenclature 3.2.1 type test conformity test made