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Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 15208.5-2018: Micro-dose X-ray security inspection system -- Part 5: Backscatter object security inspection system Status: Valid
Basic dataStandard ID: GB 15208.5-2018 (GB15208.5-2018)Description (Translated English): Micro-dose X-ray security inspection system -- Part 5: Backscatter object security inspection system Sector / Industry: National Standard Classification of Chinese Standard: A91 Classification of International Standard: 13.310 Word Count Estimation: 34,325 Date of Issue: 2018-11-19 Date of Implementation: 2019-12-01 Regulation (derived from): National Standard Announcement No. 15 of 2018 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB 15208.5-2018: Micro-dose X-ray security inspection system -- Part 5: Backscatter object security inspection system---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Micro-dose X-ray security inspection system--Part 5. Backscatter object security inspection system ICS 13.310 A91 National Standards of People's Republic of China Micro-dose X-ray safety inspection equipment Part 5. Backscattering article safety inspection equipment Part 5. Backscatterobjectsecurityinspectionsystem Published on.2018-11-19 2019-12-01 implementation State market supervision and administration China National Standardization Administration issued ContentForeword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Equipment Category 2 5 General technical requirements 2 6 Test method 4 7 Inspection rules 7 8 Packaging, labeling, storage and transportation 9 9 random technical documents 9 Appendix A (Normative Appendix) Test Body 10 Appendix B (Normative Appendix) Peripheral Equivalent Rate Test Scattering Body 27 Appendix C (informative) Image Quality Test File 28 Appendix D (Normative Appendix) Staff position of open equipment, radiation workplace dose level test method 30ForewordAll technical content in this section is mandatory. GB 15208 "Micro Dose X-ray Safety Inspection Equipment" is divided into the following five parts. --- Part 1. General technical requirements; --- Part 2. Transmissive bag security inspection equipment; --- Part 3. Transmissive cargo safety inspection equipment; --- Part 4. Human body safety inspection equipment; --- Part 5. Backscattering items safety inspection equipment. This part is the fifth part of GB 15208. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part is proposed and managed by the Ministry of Public Security of the People's Republic of China. This section drafted by. Ministry of Public Security First Institute, Beijing Zhongduan Anmin Analysis Technology Co., Ltd., Tongfang Weishi Technology Co., Ltd. Division, National Security and Alarm System Product Quality Supervision and Inspection Center (Beijing), National Security and Alarm System Product Quality Supervision and Inspection Heart (Shanghai). The main drafters of this section. Xing Yu, Chen Li, Meng Zhiqiang, Wang Fenghua, Yu Wei, Lu Peng, Liu Caixia, Jin Yingkang, Yan Yaping. Micro-dose X-ray safety inspection equipment Part 5. Backscattering article safety inspection equipment1 ScopeThis part of GB 15208 specifies the classification, general technical requirements, test methods, inspection rules, and safety inspection equipment for backscattered articles. Packaging, marking, storage and transportation, and random technical documentation. This section applies to various micro-dose X-ray safety inspections that use X-ray backscatter imaging technology to carry out safety inspections on articles. Design, manufacture, assembly, acceptance and use. This section does not apply to portable backscatter safety inspection equipment.2 Normative referencesThe following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB 15208.1-2018 Micro-dose X-ray safety inspection equipment - Part 1. General technical requirements3 Terms and definitionsThe following terms and definitions defined in GB 15208.1-2018 apply to this document. 3.1 Backscatter X-ray backscatterX-ray Scattered X-rays greater than 90° with respect to incident X-rays. 3.2 Micro-dose X-ray backscatter article security inspection equipment micro-doseX-raybackscaterobjectsecurityinspectionsystem A backscattered microdose X-ray safety inspection device for inspecting articles. 3.3 Mobile backscatter X-ray safety inspection equipment mobilebackscatterX-raysecurityinspectionsystem Mobile X-ray generating device and detector for backscattering X-ray imaging of backscattered articles device. 3.4 Fixed backscatter X-ray safety inspection equipment fixedbackscatterX-raysecurityinspectionsystem The X-ray generating device does not move, and the back-scattered article micro-dose of the object to be examined is realized by back-scattering X-ray imaging through the inspection area X-ray safety inspection equipment. 3.5 Open backscatter X-ray security inspection equipment unshieldedbackscatterX-raysecurityinspectionsystem Radiation protection devices for shielding, leaking rays, etc. generated during the inspection process are not installed, and it is necessary to delineate the supervision area or place it in compliance. Radiation protection requires a backscattered item of micro-dose X-ray safety inspection equipment. 3.6 Closed backscatter X-ray safety inspection equipment shieldedbackscatterX-raysecurityinspectionsystem Micro-dose X-rays of backscattered articles with radiation protection devices for shielding scattering, leaking rays, etc. generated during inspection Safety inspection equipment. 3.7 Backscattering penetration backscattersimplepenetration The ability of the device to resolve organic matter behind a certain thickness of the steel plate. Note. It is expressed by the thickness (mm) of the steel plate. 3.8 Backscatter spatial resolution backscatterspatialresolution The ability of the device to distinguish pairs of polyethylene wires in an air background. Note. Indicated by the line width (mm) of the pair. 3.9 Backscatter line resolution backscatterwiredisplay The device distinguishes the ability of a single polyethylene rod in an air background. Note. Indicated by the diameter of the rod (mm). 3.10 Backscatter line detection force backscatterwiredetection The device's ability to resolve a single solid copper wire in the context of a strong scatterer. Note. Indicated by the nominal diameter of the wire (mm). 3.11 Backscatter contrast sensitivity backscattercontrastsensitivity The ability of the device to resolve thin organic matter of the same material in the context of thick organic scattering. Backscatter contrast sensitivity = Thin organic thickness Total thickness of organic absorbent × 100% (1)4 Equipment classification4.1 Micro-dose X-ray backscattering article safety inspection equipment (hereinafter referred to as equipment) is classified according to the type of inspection object. a) line-package equipment; b) Container and vehicle equipment. 4.2 The equipment is divided according to the type of equipment structure. a) mobile equipment; b) Fixed equipment. 4.3 Equipment is classified according to the type of protection. a) open equipment; b) Closed equipment.5 General technical requirements5.1 Overview A device with multiple scattering viewing angles, the performance index of any viewing angle should meet the requirements of 5.2; with multiple scattering inspection channels Equipment, the performance indicators of any of its channels should meet the requirements of 5.2. Overall performance of a device with multiple scattering viewing angles or multiple scattering channels The test results of the viewing angle or channel marked with the worst performance index shall prevail. Xray generators should be maintained when performing tests 5.2.1~5.2.5 The tube voltage, tube current and other parameters are unchanged. When applied to vehicle-borne equipment, this chapter only targets the key components related to X-ray emission, acquisition and imaging. Performance is required. 5.2 Performance Specifications 5.2.1 Backscattering penetration See the requirements for the thickness of the steel plate. See Table 1. Table 1 Equipment performance characteristics requirements Technical parameters container and vehicle inspection equipment line inspection equipment Steel plate thickness Mm ≥4 ≥2 Polyethylene wire to line width Mm - ≤5 Polyethylene rod diameter Mm ≤8 ≤3 Single solid copper wire diameter Mm - ≤2 Percentage of resolving power of polyethylene test cards - ≤10% Inspection speed m/s ≥0.1 ≥0.15 Note. For test items marked "-", such equipment does not have this performance requirement. 5.2.2 Backscattering spatial resolution Should be able to distinguish the requirements of polyethylene line line width, see Table 1. 5.2.3 Backscattering line resolution Should be able to distinguish the requirements of the diameter of a single polyethylene rod, see Table 1. 5.2.4 Backscatter line detection force Should be able to distinguish the requirements of a single solid copper wire diameter, see Table 1. 5.2.5 Backscattering contrast sensitivity Should meet the requirements of the percentage of polyethylene test card resolution, see Table 1. 5.2.6 Inspection speed Should meet the requirements of inspection speed, see Table 1. 5.3 Radiation and environmental safety indicators 5.3.1 Single dose check Should comply with the provisions of 5.2.1 of GB 15208.1-2018. 5.3.2 Peripheral dose equivalent rate Should comply with the provisions of 5.2.2 of GB 15208.1-2018. 5.3.3 Equipment noise Should comply with the provisions of 5.2.3 of GB 15208.1-2018. 5.4 Operating environment Should comply with the provisions of 5.3 of GB 15208.1-2018. 5.5 Security performance It shall comply with the provisions of 5.4 of GB 15208.1-2018 [except for the provisions of 5.4.1 g]. 5.6 Mechanical structure Should comply with the provisions of 5.5 of GB 15208.1-2018. 5.7 Electromagnetic compatibility Should comply with the provisions of 5.6 of GB 15208.1-2018. 5.8 Anti-shock Should comply with the provisions of 5.7 of GB 15208.1-2018. 5.9 Anti-mechanical danger Should comply with the provisions of 5.8 of GB 15208.1-2018. 5.10 Preventing the spread of flame Should comply with the provisions of 5.9 of GB 15208.1-2018. 5.11 Temperature limits and heat resistance Should comply with the provisions of 5.10 of GB 15208.1-2018. 5.12 Environmental adaptability Should comply with the provisions of 5.11 of GB 15208.1-2018. 5.13 Functional requirements Should comply with the provisions of 5.12 of GB 15208.1-2018.6 Test methods6.1 Environmental requirements Should comply with the provisions of 6.1 of GB 15208.1-2018. 6.2 Main instruments and tools for testing Should comply with the provisions of 6.2 of GB 15208.1-2018. Test body. See Appendix A. Scatter. See Appendix B. 6.3 Performance Indicator Test 6.3.1 Overview The placement and orientation of the test body depends on the relative position of the X-ray generating device and the detector. The test body plane should be vertical In the X-ray emission direction, the placement position can be reasonably selected within the nominal inspection area of the device to obtain the best test body image. In addition, I use image processing to get the best evaluation results. The test results should be recorded in the format of Appendix C. 6.3.2 Backscatter penetration test The test steps are as follows. a) The additional test steel plate is located on the side of the near X-ray generator, and the polyethylene test card arrow is located away from the X-ray generator One side. b) The arrow of the test card can be oriented in any direction. c) Start and complete the scan, visually measure the X-ray image of the test body on the display, and observe whether the polyethylene test card arrow can be correctly distinguished. The shape and position of the head. d) Change the thickness of the additional test steel plate and repeat step c) until the shape and position of the arrow after the thickest additional test steel plate is positive Identify it. e) Record the total thickness of the test steel plate (the thickness of the test card fixed steel plate plus the thickness of the additional test steel plate). Whether the judgment result is consistent 5.2.1 requirements. 6.3.3 Backscattering spatial resolution test The test bodies are placed horizontally and vertically, respectively, and the scan is initiated and visualized to visually measure the X-ray image of the test body on the display. The result of the judgment is Does not meet the requirements of 5.2.2. Note. If all four test lines of the horizontal and vertical pairs are completely separated, the device can be considered to be able to resolve the pair. 6.3.4 Backscattering line resolution test The test bodies are placed horizontally and vertically, respectively, and the scan is initiated and visualized to visually measure the X-ray image of the test body on the display. The result of the judgment is Does not meet the requirements of 5.2.3. Note. If the complete 3 polyethylene rods are visible both horizontally and vertically, the device can be considered to be able to distinguish polyethylene rods of this diameter. 6.3.5 Backscatter line detection force test The test body wire is located on the side of the X-ray generating device, starts and completes the scanning, and visually measures the X-ray image of the test body on the display. Determine whether the result meets the requirements of 5.2.4. Note. If you can see the complete wire, you can think that the device can distinguish the wire. 6.3.6 Backscattering contrast sensitivity test The test steps are as follows. a) The additional test card is located on the side of the X-ray generator, and the additional polyethylene backing plate is located on the fixed polyethylene back plate away from X-rays. One side of the device. b) Start and complete the scan, visually measure the X-ray image of the test body on the display, and observe whether the additional test card arrow can be correctly distinguished. Shape and location. c) Change the thickness of the additional test card and the thickness of the additional polyethylene backing, repeat step b) until the thinnest additional test card arrow The shape and position of the head are correctly identified. d) Record the thickness of the thinnest additional test card and the thickness of the additional polyethylene backing. Determine whether the result meets the requirements of 5.2.5. e) Calculate the contrast sensitivity according to equation (2). Backscatter contrast sensitivity = Polyethylene test card total thickness (mm) Additional polyethylene backing plate total thickness (mm) Fixed polyethylene backing plate thickness (mm) × 100% (2) 6.3.7 Checking the speed test The test method is as follows. a) For stationary equipment, the fixed equipment is in normal working condition, and the test equipment or test target of the fixed equipment is tested. Calculate the conveying speed per unit time travel. Determine whether the result meets the requirements of 5.2.6. b) For the mobile device, make the mobile device in normal working condition, test the unit time travel of the mobile device, calculate the shift Dynamic speed. Determine whether the result meets the requirements of 5.2.6. 6.4 Radiation and environmental indicators test 6.4.1 Single dose test Test the equipment according to the test method specified in 6.3.1 of GB 15208.1-2018, and determine whether the result meets the requirements of 5.3.1. 6.4.2 Peripheral Equivalent Rate Test The test method is as follows. a) For closed equipment, place the scatterer with the same number of ray bundles (see Appendix B) in the inspection channel The horizontal center of the surface, each scatterer is illuminated by a beam of radiation, and the scatterer's 400mm × 400mm plane Parallel to the beam exit direction. The equipment shall be tested according to the test method specified in 6.3.2 of GB 15208.1-2018. determination Whether the result meets the requirements of 5.3.2. b) For open equipment, test in accordance with Appendix D. Test method According to D.1, test the workplace according to D.2. Judge Whether the result meets the requirements of 5.3.2. 6.4.3 Equipment noise test The test method is as follows. a) For line pack equipment, the noise level should be measured with a sound level meter at any point 1 m away from the equipment enclosure. Whether the result of the judgment is The requirements of 5.3.3. b) For container and vehicle-type equipment or vehicles-based equipment, noise should be measured with a sound level meter at the location of the staff member value. Determine whether the result meets the requirements of 5.3.3. 6.5 Power supply range test The equipment shall be tested according to the test method specified in 6.4 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.4. 6.6 Safety function test The equipment shall be tested according to the test method specified in 6.5 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.5. 6.7 Mechanical structure test The equipment shall be tested according to the test method specified in 6.6 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.6. 6.8 Electromagnetic compatibility test The equipment shall be tested according to the test method specified in 6.7 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.7. 6.9 Anti-shock test The equipment shall be tested according to the test method specified in 6.8 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.8. 6.10 Anti-mechanical danger test The equipment shall be tested according to the test method specified in 6.9 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.9. 6.11 Prevention of flame spread test The equipment shall be tested according to the test method specified in 6.10 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.10. 6.12 Temperature limits and heat resistance test The equipment shall be tested according to the test method specified in 6.11 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.11. 6.13 Environmental Adaptability Test The equipment shall be tested according to the test method specified in 6.12 of GB 15208.1-2018. Determine whether the result meets the requirements of 5.12. 6.14 Functional Requirements Test Perform the operation test according to the manufacturer's product instructions. Determine whether the result meets the requirements of 5.13.7 Inspection rules7.1 Inspection classification Should comply with the provisions of 7.1 of GB 15208.1-2018. 7.2 Type inspection Should comply with the provisions of 7.2 of GB 15208.1-2018. 7.3 Factory inspection Should comply with the provisions of 7.3 of GB 15208.1-2018. 7.4 Inspection items The inspection items are shown in Table 2. Table 2 Inspection items Serial number inspection project technical requirements test method type inspection factory inspection 1 Backscattering penetration force 5.2.1 6.3.2 ● ● 2 Backscattering spatial resolution 5.2.2 6.3.3 ● ● 3 Backscatter line resolution 5.2.3 6.3.4 ● ● 4 backscatter line detection force 5.2.4 6.3.5 ● ● 5 Backscattering contrast sensitivity 5.2.5 6.3.6 ● ● 6 Check speed 5.2.6 6.3.7 ● ● 7 Single dose check 5.3.1 6.4.1 ● ● 8 Peripheral dose equivalent rate 5.3.2 6.4.2 ● ● 9 Equipment noise 5.3.3 6.4.3 ● - 10 Power Adaptability 5.4 6.5 ● - 11 Safety Performance 5.5 6.6 ● ● 12 Visual inspection 5.6 6.7 ● ● 13 Enclosure protection class 5.6 6.7 ● - 14 Electromagnetic Compatibility 5.7 6.8 ● - 15 Anti-shock 5.8 6.9 ● - 16 Anti-mechanical hazard 5.9 6.10 ● - 17 Preventing the spread of flames 5.10 6.11 ● - 18 Temperature Limit and Heat Resistance 5.11 6.12 ● - 19 Environmental Adaptability 5.12 6.13 ● - 20 Functional requirements 5.13 6.......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 15208.5-2018_English be delivered?Answer: Upon your order, we will start to translate GB 15208.5-2018_English as soon as possible, and keep you informed of the progress. 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