1、 IEC 62694 Edition 1.0 2014-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Radiation protection instrumentation Backpack-type radiation detector (BRD) for the detection of illicit trafficking of radioactive material Instrumentation pour la radioprotection Dtecteur de rayonnement de type sac-dos (BRD
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20、diation protection instrumentation Backpack-type radiation detector (BRD) for the detection of illicit trafficking of radioactive material Instrumentation pour la radioprotection Dtecteur de rayonnement de type sac-dos (BRD) pour la dtection du trafic illicite des matires radioactives INTERNATIONAL
21、ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XB ICS 13.280 PRICE CODE CODE PRIX ISBN 978-2-8322-1486-2 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained th
22、is publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC 62694:2014 IEC 2014 CONTENTS FOREWORD . 6 1 Scope 8 2 Normative references 8 3 Terms and definitions, abbreviations, quantities and unit
23、s . 8 3.1 Terms and definitions . 8 3.2 Abbreviations . 10 3.3 Quantities and units . 11 4 General test procedure 11 4.1 Nature of test . 11 4.2 Standard test conditions 11 4.3 Tests performed under standard test conditions . 11 4.4 Test performed with variation of influence quantities 11 4.5 Statis
24、tical fluctuations 11 4.6 Uncertainties in the measurements 12 4.7 Background radiation during testing . 12 4.8 BRD set up 12 4.9 Speed of moving sources and integration time for radionuclide identification 13 4.10 Radiation sources 13 4.11 Functionality tests 14 5 General requirements 15 5.1 Mass 1
25、5 5.1.1 Requirements . 15 5.1.2 Method of test. 16 5.2 Design requirements 16 5.2.1 Requirements . 16 5.2.2 Method of test. 16 5.3 Marking 16 5.3.1 Requirements . 16 5.3.2 Method of test. 16 5.4 Switches 16 5.4.1 Requirements . 16 5.4.2 Method of test. 16 5.5 Effective range of measurement Energy 17
26、 5.5.1 Requirements . 17 5.5.2 Method of test. 17 5.6 Effective range of measurement Count rate 17 5.6.1 Requirements . 17 5.6.2 Method of test. 17 5.7 Operating parameters 17 5.7.1 Requirements . 17 5.7.2 Method of test. 17 5.8 Explosive atmospheres 17 5.8.1 Requirements . 17 5.8.2 Method of test.
27、18 5.9 Diagnostics 18 5.9.1 Requirements . 18 IEC 62694:2014 IEC 2014 3 5.9.2 Method of test. 18 5.10 Power supply . 18 5.10.1 Requirements . 18 5.10.2 Method of test. 18 5.11 Data format 19 5.11.1 Requirements . 19 5.11.2 Method of test. 20 5.12 Data storage 21 5.12.1 Requirements . 21 5.12.2 Metho
28、d of test. 21 5.13 Communication interface 21 5.13.1 Requirements . 21 5.13.2 Method of test. 21 5.14 User interface 21 5.14.1 Display . 21 5.14.2 Basic indications . 22 5.14.3 Additional indications 22 5.14.4 Indications for BRDs with radionuclide identification capabilities . 23 5.14.5 Indications
29、 for BRDs with radionuclide directionality capabilities . 23 5.14.6 Basic functions and controls . 23 5.14.7 Restricted functions and controls 24 6 Radiation detection requirements 24 6.1 False alarm test . 24 6.1.1 Requirements . 24 6.1.2 Method of test. 24 6.2 Alarm response to photon radiation 25
30、 6.2.1 Requirements . 25 6.2.2 Method of test. 25 6.3 Alarm response to neutron radiation 26 6.3.1 Requirements . 26 6.3.2 Method of test. 26 6.4 Personal radiation protection alarm and response time 27 6.4.1 Requirements . 27 6.4.2 Method of test. 27 6.5 Gamma-ray ambient dose equivalent rate indic
31、ation 28 6.5.1 Requirements . 28 6.5.2 Method of test. 28 6.6 Angular dependence and verification of directional indication. 28 6.6.1 Requirements . 28 6.6.2 Method of test. 28 6.7 Over range test 29 6.7.1 Requirements . 29 6.7.2 Method of test. 29 6.8 Neutron indication in the presence of photons 3
32、0 6.8.1 Requirements . 30 6.8.2 Method of test. 30 6.9 Detection of gradually increasing radiation levels . 31 4 IEC 62694:2014 IEC 2014 6.9.1 Requirements . 31 6.9.2 Method of test. 31 6.10 Networked area monitors . 31 6.10.1 Requirements . 31 6.10.2 Method of test. 32 6.11 Radionuclide identificat
33、ion, when provided . 32 6.11.1 General Requirements 32 6.11.2 Radionuclide identification library . 33 6.11.3 Single radionuclide identification 33 6.11.4 Identification of shielded radionuclides . 35 6.11.5 Simultaneous and masked radionuclide identification . 35 6.11.6 Radionuclide not in library
34、36 6.11.7 Low-exposure rate identification . 37 6.11.8 Over range characteristics for identification 37 6.11.9 Rejection of natural background variations . 38 7 Environmental requirements 39 8 Mechanical requirements . 39 9 Electromagnetic requirements . 40 10 Documentation 40 10.1 Type test report
35、. 40 10.2 Certificate 40 10.3 Operation and maintenance manual . 40 Annex A (informative) Statistical considerations . 46 A.1 Poisson distribution 46 A.2 Confidence intervals for Poisson distribution 46 A.3 False alarm testing 46 A.4 Binomial distribution. 48 Annex B (informative) List of expected p
36、rogeny and expected impurities . 50 Annex C (informative) Summary of fluence rate calculations 52 Annex D (normative) Calculation ambient dose equivalent rate 54 Bibliography 59 Figure 1 Diagram of testing angles when source passes at an angle of 0 in the horizontal plane (top view). The displayed s
37、ource movement represents the test configuration at an angle of 0. . 44 Figure 2 Diagram of the two orthogonal planes (horizontal and vertical planes), the BRD reference point and testing angles 45 Figure 3 BRD setup and testing source positions for network area monitoring 45 Table 1 Standard test c
38、onditions 42 Table 2 Occurrence of functionality tests for environmental testing 42 Table 3 Occurrence of functionality tests for mechanical testing 43 Table 4 Emission frequency range . 43 Table 5 Occurrence of functionality tests for electromagnetic testing . 44 Table A.1 One-sided 95 % upper conf
39、idence bounds for the false alarm rate for a given number of false alarms observed over a given time period 47 IEC 62694:2014 IEC 2014 5 Table A.2 Necessary sample sizes (n) for different levels (p o ) and number of failures (k) . 49 Table B.1 List of expected progeny and expected impurities 51 Tabl
40、e C.1 Examples of fluence rate calculations 53 Table D.1 Conversion coefficient h * K (10) from air kerma, K, to ambient dose equivalent, H*(10), for mono-energetic and parallel photon beams 55 Table D.2 Probabilities per disintegration for 232 Th and 226 Ra (in equilibrium) as a function of photon
41、energy . 56 Table D.3 Values of the mass energy-transfer, mass energy-absorption, and mass attenuation coefficients for air . 58 6 IEC 62694:2014 IEC 2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RADIATION PROTECTION INSTRUMENTATION BACKPACK-TYPE RADIATION DETECTOR (BRD) FOR THE DETECTION OF ILLI
42、CIT TRAFFICKING OF RADIOACTIVE MATERIAL 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 que
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