1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationRadiation protection instrumentation Cargo/vehicle radiographic inspection systemBS IEC 62523:2010National forewordThis British Standard is the UK implementation of IEC 62523:201
2、0.The UK participation in its preparation was entrusted to Technical CommitteeNCE/2, Radiation protection and measurement.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acon
3、tract. Users are responsible for its correct application. BSI 2010ISBN 978 0 580 60853 7ICS 13.280Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 July 2010.Amen
4、dments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS IEC 62523:2010IEC 62523Edition 1.0 2010-06INTERNATIONAL STANDARD NORME INTERNATIONALERadiation protection instrumentation Cargo/vehicle radiographic inspection system Instrumentation pour la radioprotection Systme radiograp
5、hique dinspection de cargaison/vhicule INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE SICS 13.280 PRICE CODECODE PRIXISBN 978-2-88912-002-4 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Inter
6、nationale BS IEC 62523:2010 2 62523 IEC:2010 CONTENTS FOREWORD.4 1 Scope and object6 2 Normative references .6 3 Terms and definitions .7 4 General characteristics of cargo/vehicle radiographic inspection system 9 4.1 General .9 4.2 Emergency stop devices9 4.3 Software9 4.4 Markings .9 4.5 Ambient d
7、ose equivalent rate isodose contour.9 4.6 Radioactive sources 10 4.7 Safety interlocks10 4.8 Status indicators .10 4.9 Monitoring system .10 5 Inspection system classification10 6 General test procedures .10 6.1 Nature of tests.10 6.2 Reference conditions and standard test conditions 10 6.3 Other co
8、nditions of the test .11 7 Imaging performance tests .11 7.1 Steel penetration.11 7.2 Wire detection .12 7.3 Contrast sensitivity13 7.4 Spatial resolution 14 7.5 Material discrimination capability.15 8 Radiological safety tests.16 8.1 General .16 8.2 Ambient dose equivalent rate isodose contour.16 8
9、.3 Ambient dose equivalent rate on the system boundary 17 8.4 Ambient dose equivalent rate at the operating positions 18 8.5 Ambient dose equivalent to the driver18 8.6 Ambient dose equivalent to the object being inspected19 9 Electrical safety tests .19 9.1 Equipment ground protection.19 9.2 Insula
10、tion resistance .19 9.3 Voltage test.19 9.4 Electric shock protection .20 10 Electromagnetic compatibility .20 10.1 Requirements20 10.2 Test method 20 11 Environmental requirements .21 11.1 Requirements21 11.2 Test method 21 12 Documentation .21 Bibliography22 BS IEC 62523:201062523 IEC:2010 3 Figur
11、e 1 Steel penetration testing apparatus12 Figure 2 Wire detection testing apparatus 13 Figure 3 Contrast indicator test apparatus14 Figure 4 Spatial resolution test apparatus 15 Figure 5 A test sample for material discrimination capability test16 Figure 6 Layout of an example ambient dose equivalent
12、 rate isodose contour17 Table 1 Reference conditions and standard test conditions11 Table 2 Thicknesses for each material .15 Table 3 Test voltage 20 BS IEC 62523:2010 4 62523 IEC:2010 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RADIATION PROTECTION INSTRUMENTATION CARGO/VEHICLE RADIOGRAPHIC INSPECT
13、ION SYSTEM 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 standardiza
14、tion 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(s)”). Their preparation is
15、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 collaborates closely with the In
16、ternational 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 on the relevant subjects sin
17、ce 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 ensure that the technical content
18、 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 the maximum extent possible
19、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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity a
20、ssessment 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 users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, e
21、mployees, servants or agents including individual experts and members of its technical 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
22、 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 publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to t
23、he 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 patent rights. International Standard IEC 62523 has been prepared by subcommittee 45B: Radiation protection instrumentation, of IEC
24、technical committee 45: Nuclear instrumentation. The text of this standard is based on the following documents: FDIS Report on voting 45B/638/FDIS 45B/652/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 publi
25、cation has been drafted in accordance with the ISO/IEC Directives, Part 2. BS IEC 62523:201062523 IEC:2010 5 The committee has decided that the contents of this amendment and the base publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.c
26、h“ 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 62523:2010 6 62523 IEC:2010 RADIATION PROTECTION INSTRUMENTATION CARGO/VEHICLE RADIOGRAPHIC INSPECTION SYSTEM 1 Scope and object This In
27、ternational Standard applies to radiographic inspection systems with photon radiation energy of at least 500 keV for inspection of cargo, vehicles and cargo containers. Such inspection systems generally consist of radiation source(s), detectors, control system, image processing system, radiation saf
28、ety system and other auxiliary devices/facilities. The object of this standard is to define the tests and the relevant testing methods for determining the performance characteristics of the radiographic inspection systems. This standard is not applicable to those cargo/vehicle inspection systems usi
29、ng neutron source radiography, computed tomography or backscatter technology. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the cited edition applies. For undated references, the latest edition of the refe
30、renced document (including any amendments) applies. IEC 60050-393:2003, International Electrotechnical Vocabulary (IEV) Part 393: Nuclear instrumentation Physical phenomena and basic concepts IEC 60050-394:2007, International Electrotechnical Vocabulary (IEV) Part 394: Nuclear instrumentation Instru
31、ments, systems, equipment and detectors IEC 60204-1:2005, Safety of machinery Electrical equipment of machines Part 1: General requirements IEC 61000-6-2:2005, Electromagnetic compatibility (EMC) Part 6-2: Generic standards Immunity for industrial environments IEC 61000-6-4, Electromagnetic compatib
32、ility (EMC) Part 6-4: Generic standards Emission standard for industrial environments IEC 61010-1:2001, Safety requirements for electrical equipment for measurement, control, and laboratory use Part 1: General requirements ISO 4948-1, Steels Classification Part 1: Classification of steels into unall
33、oyed and alloy steels based on chemical composition ISO 9978:1992, Radiation protection Sealed radioactive sources Leakage test methods IAEA Safety Guide No.RS-G-1.10, Safety of Radiation Generator and Sealed Radioactive Sources IAEA Safety Guide No.TS-R-1, Regulations for the Safe Transport of Radi
34、oactive Material BS IEC 62523:201062523 IEC:2010 7 3 Terms and definitions For the purposes of this document, the following terms and definitions apply, as well as those given in IEC 60050-393 and IEC 60050-394. 3.1 transmission image a projection image created by X-rays or gamma-rays passing throug
35、h an inspected object, based on the difference of their attenuation by the inspected object 3.2 cargo/vehicle radiographic inspection system (inspection system) a system that makes use of X-ray or gamma-ray sources and radiation detectors to obtain transmission images of cargo or vehicles 3.3 X-ray
36、inspection system an inspection system that uses accelerator(s) or generator(s) to produce bremsstrahlung radiation as the source of X-ray for obtaining images 3.4 gamma-ray inspection system an inspection system that uses radionuclide(s) as the source of gamma-ray for obtaining images 3.5 controlle
37、d area a controlled area is any area in which specific protection measures and safety provisions are or could be required for: a) controlling normal exposures or preventing the spread of contamination during normal working conditions; and b) preventing or limiting the extent of potential exposures I
38、AEA No. 115 3.6 supervised area any area not designated as a controlled area but for which occupational exposure conditions are kept under review even though specific protective measures and safety provisions are not normally needed IAEA No. 115 3.7 system boundary the outer boundary of the supervis
39、ed area 3.8 total absorber any object through which the transmitted radiation is reduced to a level at which it is not possible to distinguish from the background 3.9 steel penetration the maximum thickness of steel (stated in mm), through which the X-rays or gamma-rays from the inspection system ca
40、n be measured and distinguished from the background BS IEC 62523:2010 8 62523 IEC:2010 3.10 wire detection the minimum cross-section size of a wire, e.g., the diameter of a wire stated in mm, which can be measured and distinguished from the background 3.11 contrast sensitivity the ability to disting
41、uish a small difference of measurements in an area from a surrounding uniform background 3.12 spatial resolution the ability to distinguish a pair of small object as separate entities 3.13 multiple energy system an inspection system operating with two or more different spectra of radiation energy, a
42、nd being capable of distinguishing different materials 3.14 material discrimination capability certain capability of an inspection system to discriminate different classes of materials 3.15 scanning speed the speed of the inspected object moving relative to the inspection system, or vice versa 3.16
43、inspection dimension the outer dimension of the largest object which could be scanned and inspected by an inspection system 3.17 isodose contour a perimeter around the inspection system on which all points receive equal amounts of radiation dose from the operational radiation source 3.18 ambient dos
44、e equivalent rate the ratio of dHx(10) by dt, where dHx(10) is the increment of ambient dose equivalent in the time interval dt tHxxHd)10(d)10( = model number; unique serial number; function designation for control, switches, adjustments; radiation source and energy; ionizing radiation warning symbo
45、l; other safety warnings. 4.5 Ambient dose equivalent rate isodose contour The manufacturer should provide an isodose contour of the ambient dose equivalent rate around the source when the inspection system is operating. BS IEC 62523:2010 10 62523 IEC:2010 This isodose contour is provided for refere
46、nce purposes only. It may change substantially based upon the motion of the system and the object placed in the beam. 4.6 Radioactive sources Radioactive sources shall be properly shielded and protected from unauthorized access. The transportation and labelling of the radioactive sources shall compl
47、y with national and/or international requirements (e.g., IAEA No.TS-R-1 and IAEA No.RS-G-1.10). Provisions should be made for routine leak testing of the radioactive sources, in accordance with ISO 9978:1992 in order to minimize the radiation exposure to the operator. 4.7 Safety interlocks Safety in
48、terlocks shall be installed to prevent people from being accidentally exposed. The radiation beam can only be turned on after all the safety interlocks are in the “ON” position. If the status of any interlocks changes during operation, the radiation beam shall be terminated or shuttered. The safety
49、interlocks shall be designed to work in fail safe mode. The safety interlocks shall provide an interface to link additional safety devices. 4.8 Status indicators Status indicators shall be installed to provide audible and visual warning signals to warn people of the danger of radiation exposure. These warning signals shall be started at least 5 s before the beam is turned on and remain on during the scan until the radiation beam
