1、 IEC 62302Edition 1.0 2007-09INTERNATIONAL STANDARD NORME INTERNATIONALERadiation protection instrumentation Equipment for sampling and monitoring radioactive noble gases Instrumentation pour la radioprotection Matriel pour le prlvement et la surveillance des gaz rares radioactifs IEC62302:2007THIS
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16、u contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62302Edition 1.0 2007-09INTERNATIONAL STANDARD NORME INTERNATIONALERadiation protection instrumentation Equipment for sampling and monitoring radioactive noble gases Instrumentation pour la radioprotection Matriel pou
17、r le prlvement et la surveillance des gaz rares radioactifs INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XICS 13.280 PRICE CODECODE PRIXISBN 2-8318-9315-1 2 62302 IEC:2007 CONTENTS FOREWORD.6 1 Scope and object8 2 Normative references .8 3 Terms and definition
18、s .9 4 Classification of noble gas monitoring equipment .13 4.1 General Design Considerations .14 4.1.1 Methods of detection .14 4.1.2 Ease of Decontamination.14 4.1.3 Considerations for explosive mixtures .14 4.1.4 Corrosion resistance14 4.1.5 Reliability 14 4.2 Capability for operational testing .
19、14 4.3 Adjustment and maintenance facilities.15 4.4 Acoustic noise level of the assembly .15 4.5 Electromagnetic interference .15 4.6 Mechanical shock15 4.7 Measurement characteristics.15 5 Equipment components 16 5.1 General .16 5.2 Sampling assembly .16 5.2.1 Sampling and exhaust pipes 16 5.2.2 In
20、let filter or water trap 16 5.2.3 Collection medium .17 5.2.4 Air pump17 5.2.5 Flow-related control and measurement 17 5.3 Detection assembly .18 5.3.1 Radiation detector .18 5.3.2 Compensation detection 18 5.4 Control assembly.18 5.5 Indication facilities.18 5.6 Alarm assembly.19 5.6.1 Alarms.19 5.
21、6.2 Alarm test facilities 19 5.6.3 Alarm reset features 19 5.6.4 Alarm self-diagnosis 19 5.6.5 Alarm display.19 5.7 Check and “keep alive” sources.20 5.8 Ambient background shielding or compensation devices .20 5.9 Batteries20 6 Test conditions .20 6.1 General test procedures 20 6.2 Tests performed
22、under standard test conditions for normal operation condition .20 6.3 Tests performed with variation of influence quantities20 6.4 Tests performed under test conditions for emergency conditions.21 62302 IEC:2007 3 6.5 Types of sources.21 6.5.1 Reference source 21 6.5.2 Solid sources.21 6.6 Metrologi
23、cal confirmation system during tests .21 6.6.1 Uncertainty of measurement21 6.6.2 Statistical fluctuations22 7 Radiation detection performance tests22 7.1 Reference response 22 7.1.1 Requirements 22 7.1.2 Test to be carried out 22 7.1.3 Test method with gaseous sources22 7.1.4 Relative response with
24、 solid sources .22 7.1.5 Test with an electronic signal generator.22 7.2 Linearity 23 7.2.1 Test source .23 7.2.2 Requirements 23 7.2.3 Test method 23 7.3 Response to radioactive gases other than radioactive noble gases .23 7.3.1 Requirements 23 7.3.2 Test method 23 7.4 Response time 23 7.4.1 Requir
25、ements 23 7.4.2 Test method 23 7.5 Response to ambient gamma radiation24 7.5.1 General .24 7.5.2 Requirements 24 7.5.3 Test method 24 7.6 Response to neutron radiation.25 7.6.1 Response to neutron radiation.25 7.7 Overload test.25 7.7.1 Requirements 25 7.7.2 Test method 25 7.8 Statistical fluctuatio
26、ns .25 7.8.1 Requirements 25 7.8.2 Test method 25 7.9 Zero stability .26 7.9.1 Stability of zero indication with time.26 7.9.2 Stability of zero indication with variation of temperature 26 7.10 Reproducibility of the response .27 7.10.1 Requirements 27 7.10.2 Test method 27 8 Electrical, electronic
27、and mechanical tests .27 8.1 Alarm trip range 27 8.1.1 Requirement27 8.1.2 Test method 27 8.2 Alarm trip stability .28 8.2.1 Requirements 28 8.2.2 Test method 28 8.3 Equipment fault alarm system28 4 62302 IEC:2007 8.3.1 Loss of detector signal 28 8.3.2 Failure of the electronic system .28 8.3.3 Loss
28、 of the sampling circuit .29 8.4 Warm-up time Detection and measurement assembly.29 8.4.1 Requirements 29 8.4.2 Test method 29 8.5 Power supply variations.29 8.5.1 Requirements 29 8.5.2 Test method 29 8.6 Battery test30 8.6.1 General .30 8.6.2 Requirements 30 8.7 Power supply transient effects.30 8.
29、7.1 Requirements 30 8.7.2 Test method 31 9 Air circuit performances test .31 9.1 General .31 9.2 Susceptibility to gaseous retention 31 9.2.1 Requirements 31 9.2.2 Test method 31 9.3 Accuracy of the volume and flow rate measurement 32 9.3.1 Requirement32 9.3.2 Test method 32 9.4 Flow-rate stability3
30、2 9.4.1 Requirements 32 9.4.2 Test method 32 9.5 Effect of filter pressure drop 32 9.5.1 Requirements 32 9.5.2 Test method 33 9.6 Effect of power supply voltage on the flow rate33 9.6.1 Requirement for mains supplied equipment .33 9.6.2 Test method 33 9.7 Effect of power supply frequency on flow rat
31、e33 9.7.1 Requirement for mains supplied equipment .33 9.7.2 Test method 33 10 Environmental performance tests .34 10.1 Ambient temperature .34 10.1.1 General .34 10.1.2 Requirements 34 10.1.3 Test method 34 10.2 Temperature shock for portable and transportable assemblies 34 10.2.1 General .34 10.2.
32、2 Requirement34 10.2.3 Test method 34 10.3 Relative humidity.35 10.3.1 General .35 10.3.2 Requirement35 10.3.3 Test method 35 10.4 Atmospheric pressure35 62302 IEC:2007 5 10.4.1 General .35 10.4.2 Ambient Atmosphere .35 10.4.3 Atmosphere inside the detector system .35 10.5 Sealing36 10.6 Mechanical
33、shocks 36 10.6.1 Requirements 36 10.6.2 Test methods.36 10.7 External electromagnetic immunity and electrostatic discharge .36 10.7.1 Requirements 36 10.7.2 Test method 36 10.8 Electromagnetic emission36 10.8.1 Requirements 36 10.8.2 Test method 37 11 Type test report and Certificate 37 12 Operation
34、 and maintenance manual .37 Annex A (informative) Preparation of radioactive gas reference sources 42 Figure A.1 Calibration loop 43 Table 1 Reference conditions and standard test conditions for normal operation conditions .38 Table 2 Tests performed under standard test conditions for normal operati
35、on conditions .39 Table 3 Tests performed with variation of influence quantities for normal operational conditions .40 Table 4 Tests of the air circuit41 6 62302 IEC:2007 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RADIATION PROTECTION INSTRUMENTATION EQUIPMENT FOR SAMPLING AND MONITORING RADIOACTIV
36、E NOBLE GASES 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 questions concerning standard
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42、le 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 responsible for any equipme
43、nt 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 technical committees and IEC
44、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 Publications. 8) Attenti
45、on 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 subject of patent rights. IEC
46、shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62302 has been prepared by subcommittee 45B: Radiation protection instrumentation, of IEC technical committee 45: Nuclear instrumentation. This standard directly complements IEC 60761-1 (2002) and
47、 IEC 60761-3 (2002). The text of this standard is based on the following documents: FDIS Report on voting 45B/550/FDIS 45B/556/RVDFull information 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 a
48、ccordance with the ISO/IEC Directives, Part 2. 62302 IEC:2007 7 The committee has decided that the contents of this publication 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
49、 date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 8 62302 IEC:2007 RADIATION PROTECTION INSTRUMENTATION EQUIPMENT FOR SAMPLING AND MONITORING RADIOACTIVE NOBLE GASES 1 Scope and object This International Standard is applicable to equipment used for sampling and continuous measurement of radioactive noble gases in the workplace, in gaseous effluents discharged into the
