GB 15208.3-2018Micro-dose X-ray security inspection systems - Part 3: Transmission cargo security inspection systems (English PDF)

Foreword

All 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 third 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: the First Institute of the Ministry of Public Security, Beijing Zhongduan Anmin Analysis Technology Co., Ltd., China Civil Aviation Science and Technology Research Institute, National Security and Alarm System Product Quality Supervision and Inspection Center (Shanghai), National Security and Alarm System Product Quality Supervision and Inspection Center (Beijing), Tongfang Weishi Technology Co., Ltd., Shanghai Gaojing Imaging Technology Co., Ltd. The main drafters of this section. Wang Ben, Liao Jianxin, Meng Zhiqiang, Dong Mingwen, Niu Yujie, Liu Caixia, Tao Lei, Yang Zhongrong, Peng Ningxuan, Zhao Yue, Han Jingyu, Lin Weizhi, Chen Yu. Micro-dose X-ray safety inspection equipment Part 3. Transmissive cargo safety inspection equipment

1 Scope

Part 3 of China's mandatory series on micro-dose X-ray security inspection equipment, covering the transmission cargo scanner - the large machines through which pallets, air cargo and freight consignments pass at ports, airports and logistics depots. The whole technical content of this part is mandatory. It specifies the general technical requirements, the test methods and the inspection rules for transmission cargo security inspection systems, applied together with the general requirements of Part 1. The difference from the baggage machine of Part 2 is not one of degree. A cargo scanner has to see through far more material, which demands a higher energy and therefore raises every radiation question the series exists to answer; the object is heavy and moved by machinery rather than by hand; and the throughput required at a freight terminal means the machine runs at a rate that leaves the operator little time on each image. The requirements follow from that: the penetration through steel and the wire resolution set at the levels a cargo load demands, the spatial resolution and contrast sensitivity, the material discrimination, and the imaging of a dense load; the radiation safety and shielding, with the leakage limits and the controlled area around a machine of this power, the interlocks, the warnings and the safeguards against a person being inside the enclosure; the conveyor or transport system and the handling of the load; and the software, image storage, retrieval and access control. The environmental, electrical and electromagnetic requirements complete the part. Issued on 19 November 2018 and in force since 1 December 2019.

This part of GB 15208 specifies the equipment classification, general technical requirements, test methods and inspection rules for transmissive cargo safety inspection equipment. Then, packaging, marking, storage and transportation, and random technical documentation. This section applies to the design, manufacture, assembly, acceptance and use of various transmissive cargo safety inspection equipment.

Note. The maximum single-sided length of the height and width dimensions of any one of these equipment inspection channel inlet sections is greater than or equal to 0.91m and less than or equal to 2.41m. This section does not apply to computed tomography (CT), electron accelerators, X-rays with X-ray generators greater than 500 keV. Line safety inspection equipment and vehicle safety inspection equipment.

2 Normative references

The 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 requirements

GB 15208.2-2018 Micro-dose X-ray safety inspection equipment - Part 2

3 Terms and definitions

The following terms and definitions defined in GB 15208.1-2018 and GB 15208.2-2018 apply to this document.

3.1 Conveyor load capacity maximumloadcapacity The maximum weight of the object to be inspected can be dragged by the device transport device.

3.2 Transmissive cargo safety inspection equipment transmissioncargosecurityinspectionsystem Used to inspect freight items, and the maximum one-sided length of the height and width dimensions of any one of the inspection passage entrance sections is greater than or equal to Transmission micro-dose X-ray safety inspection equipment of

0.91 m, less than or equal to

4 Equipment classification

Transmissive cargo safety inspection equipment (hereinafter referred to as equipment) is classified according to the size of the entrance section of the inspection passage, see Table 1. Table

1 Equipment classification unit is mm Device type maximum single side size L Type I 910 <= L <= 1210 Type II 1210 \u003cL<=1510 Table 1 (continued) Unit is mm Device type maximum single side size L Type III 1510 \u003cL<=1810 Type IV 1810 \u003cL<=2110 V type 2110 \u003cL<=2410

6 Test methods

6.1 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 A and test body B. See Appendix A. Scatter. See Appendix B.

7 Inspection rules

7.1 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 7. Table

7 Inspection items Serial number inspection project technical requirements test method type inspection factory inspection 1 line resolution 5.1.2 6.3.2 - -

16 Visual inspection 5.5 6.7 - - 17 enclosure protection class 5.5 6.7 - -

18 Electromagnetic compatibility 5.6 6.8 - - Table 7 (continued) Serial number inspection project technical requirements test method type inspection factory inspection

20 Anti-mechanical hazard 5.8 6.10 - -

21 Prevent flame spread 5.9 6.11 - -

22 Equipment temperature limits and heat resistance 5.10 6.12 - -

23 Environmental Adaptability 5.11 6.13 - -

24 Functional requirements 5.12 6.14 - -a a Only 5.12.1a),

5.12.5 in GB 15208.1-2018 are required.

7.5 Evaluation of test images during type inspection Should comply with the provisions of

7.5 of GB 15208.1-2018.

7.6 Inspection Should comply with the provisions of

7.6 of GB 15208.1-2018.

7.7 Decision rules Should comply with the provisions of

7.7 of GB 15208.1-2018.

8 Packaging, marking, storage and transportation Should comply with the provisions of Chapter 8 of GB 15208.1-2018.

9 random technical documents

Should comply with the provisions of Chapter 9 of GB 15208.1-2018.

Appendix A

(normative appendix) Test body A.1 Overview The test body includes the test body A and the test body B. Test body A is a penetrating test body for testing the penetrating power of the device; test body B For comprehensive test body, for line resolution, penetration resolution, spatial resolution, organic matter resolution, mixture resolution and inorganic matter for test equipment Resolve. The test body B contains a test card. The test card is mounted on the fixing plate in the test body B, and is packaged into a long length by the upper and lower protective lining plates. Square test body. The protective liner of the test body B is a foamed polyethylene plate having a density of

0.015 g/cm3 to

0.025 g/cm3. A.2 Test body A (penetration test body) Test body A is a penetration test body for testing the penetration of the device. The test body A is composed of test plates of different thicknesses superimposed with marking plates, which can be combined into a thickness of 18 mm to 88 mm. degree. The marking plate is a three-quarter lead with a thickness of 10 cm and a diameter of 50 mm adhered to the center of the surface of the steel plate with a thickness of 18 mm. Block, see Figure A.1. The dimensions of the test steel plate are shown in Figure A.2. The material and thickness requirements are shown in Table A.1. The direction of the lead block gap in the test body A can be adjusted, and the position shown is only one possibility. The unit is mm Description. 1

---steel plate; 2

---three-quarter round lead. Figure A.1 Test body A marker board The unit is mm Description. t

---Steel thickness. Figure A.2 Test body A test steel plate Table A.1 Penetration test steel plate specifications and quantity tables in millimeters Type size quantity material Steel plate 1.200×200×30 1 45 carbon steel Steel plate 2.200×200×10 2 45 carbon steel Steel plate 3.200×200×5 2 45 carbon steel Steel plate 4.200×200×2 5 45 carbon steel A.3 Test Body B (Comprehensive Test Body) A.3.1 Overview Test body B includes 6 test cards. line resolution test card (TEST1), penetration resolution test card (TEST2), spatial resolution test card (TEST3), organic matter discrimination test card (TEST4), mixture resolution test card (TEST5) and inorganic resolution test card (TEST6) group to make. The structure and dimensions of the test body B are shown in Figures A.3 to A.10. The unit is mm Figure A.3 Test body B outline drawing

Note. The ordinate is numbered, and the correspondence with the straight line is shown in Table A.2 and Table A.3. Figure A.4 Test body B internal structure The unit is mm Description. 1

---flat washer 4; 8

---test card 2 alloy aluminum step; 15

---test card 5 lower half; 2

---spring washer 4; 9

---test card fixing plate; 16

---short aluminum screw M5×10; 3

---test card 6 thin steel sheet; 17