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GB 15208.2-2018Micro-dose X-ray security inspection systems - Part 2: Transmission baggage security inspection systems (English PDF)

微剂量X射线安全检查设备第2部分：透射式行包安全检查设备

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC

Level / Type

National · Mandatory

Issue date

November 19, 2018

Implementation date

December 1, 2019

Scope

GB 15208.2-2018 is the English-translated version of 微剂量X射线安全检查设备第2部分：透射式行包安全检查设备.

Part 2 of China's mandatory series on micro-dose X-ray security inspection equipment, covering the transmission baggage scanner - the machine at every airport, railway station and metro entrance in the country, through which hand luggage and parcels pass on a belt while an operator reads the image. It is the largest part of the series because it is the machine that is deployed in the greatest numbers and the one whose failure is most consequential: everything the security screening of a public place achieves passes through it. This part specifies the general technical requirements, the test methods, the inspection rules and the packaging, transport and storage of transmission baggage security inspection systems, applied together with the general requirements of Part 1. What it adds to Part 1 is everything specific to reading a bag. The imaging requirements are set as figures a machine either meets or does not: the resolution of a fine wire, the penetration through a given thickness of steel, the spatial resolution and the contrast sensitivity, the separation of organic, inorganic and mixed materials by colour, and the behaviour of the image where a dense object hides what is behind it. Around them sit the requirements on the tunnel and the conveyor, the radiation leakage measured at the positions where operator and passengers actually stand, the interlocks, the image processing and the functions the operator uses - the enhancement, the zoom, the pseudo-colour, the review of the previous bag - and the storage, retrieval and access control of the images. The environmental, electrical and electromagnetic requirements complete it, since a scanner that fails at a station entrance stops the station. Issued on 19 November 2018 and in force since 1 December 2019, it replaces GB/T 15208.2-2006.

Document preview — GB 15208.2-2018

National Standard of the People's Republic of China

ICS: 13.310
Classification: A 91

Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and definitions
4 General technical requirements
4.1 Performance indicators
4.2 Radiation and environmental safety indicators
4.3 Operating environment
5 Test methods
5.3 Performance Indicator Test
5.4 Radiation and environmental safety indicators test
5.9 Anti-shock test Test the equipment according to the test method specified in
6 Inspection rules
7 Mixture resolution 4.1.8 5.3.7 - -
8 Inorganic resolution 4.1.9 5.3.8 - -
9 Material resolution 4.1.10 5.3.9 - -
10 Effective material resolution 4.1.11 5.3.10 - -
11 Conveying device 4.1.12 5.3.11 - -
12 Single dose check 4.2.1 5.4.1 - -
13 Peripheral dose equivalent rate 4.2.2 5.4.2 - -
14 Equipment noise 4.2.3 5.4.3 - -
15 Power Adaptability 4.3.2 5.5 - -
16 Safety features 4.4 5.6 - -
17 Visual inspection 4.5 5.7 - - 18 enclosure protection class 4.5 5.7 - -
19 Electromagnetic Compatibility 4.6 5.8 - - 20 electric shock 4.7 5.9 - -
Appendix A

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 second part of GB 15208. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 15208.2-2006 "Micro Dose X-ray Safety Inspection Equipment Part 2. Test Body". versus The main technical changes compared with GB/T 15208.2-2006 are as follows:

--- Revised scope (see Chapter 1);

--- Added normative references (see Chapter 2);

---Added 12 terms and definitions (see Chapter 3);

--- Added general technical requirements (see Chapter 4);

--- Increased test methods (see Chapter 5);

--- Added inspection rules (see Chapter 6);

--- Increased packaging, marking, storage and transportation (see Chapter 7);

--- Added random technical documentation (see Chapter 8);

1 Scope

This part of GB 15208 specifies the general technical requirements, test methods, inspection rules, packaging, and Marking, storage and transportation as well as random technical documentation. This section applies to the design, manufacture, assembly, acceptance and use of various transmissive bag safety inspection equipment.

Note. The height and width of the inlet section of any of these equipment inspection channels are less than 1.1m. This section does not apply to computed tomography (CT), electron accelerators, and X-ray generating devices with energy greater than 500 keV. Radiation 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

3 Terms and definitions

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

3.1 Line resolution wiredisplay The ability of the device to resolve a single solid copper wire.

Note. Generally indicated by the nominal diameter (mm) of the wire.

3.2 Penetration resolution usefulpenetrationresolution The device distinguishes the ability of a single solid copper wire under the specified thickness of the alloy aluminum step.

Note. Generally indicated by the nominal diameter (mm) of the wire.

3.3 Penetration force simplepenetration The ability of the device to penetrate the object being examined.

Note. Generally, it is expressed by the thickness (mm) of the steel plate.

3.4 Wire pair linepair A group of metal wires arranged evenly, the spacing between the two wires being the same as the diameter of the wires.

Note. The nominal diameter (mm) of the general line indicates the specification of the pair.

3.5 Spatial resolution The ability of the device to resolve pairs.

Note. Generally indicated by the nominal diameter (mm) of the wire.

3.6 Grayscale resolution grayleveldifferentiation The ability of the device to distinguish the same material and different thickness of the object to be inspected.

Note. Generally, it is expressed by the number of steps of the separable alloy aluminum step.

3.7 Organic matter distinguishing organicdifferentiation The ability of the device to resolve equivalent organic matter.

4.1 Performance indicators

4.1.1 Overview Transmissive bag-type security inspection equipment (hereinafter referred to as equipment) with multiple transmission angles, the performance index of any one of the viewing angles should be Meet the requirements of 4.1, and use the worst value of each test result from each perspective as the performance index of the equipment; the design with multiple inspection channels The performance index of any one of the inspection channels should meet the requirements of 4.1, and the worst value of each test result of each inspection channel is used. This performance indicator of the device. When performing the test of 4.1.2~4.1.11, the tube voltage, tube current, total filtration, etc. of the X-ray generator shall be maintained. The parameters are unchanged.

4.1.2 Line resolution Should be able to distinguish the minimum single solid copper wire diameter requirements, see Table 1. Table

1 Line resolution index is required to be in millimeters Level I Level II Line resolution 0.203 0.102

4.1.3 Penetration resolution Should be able to resolve the requirements of the minimum single solid copper wire diameter under the 9.5mm, 15.9mm and 22.2mm alloy aluminum steps, see Table 2. Table

2 Penetration resolution indicators are required to be in millimeters Level I Level II Penetration resolution 0.511 0.254

4.1.4 Spatial resolution Should be able to distinguish the minimum line diameter requirements, see Table 3. Table

3 Spatial resolution indicators are required to be in millimeters Level I Level II Spatial resolution 1.6 1.0

4.1.5 Penetration Should be able to distinguish the requirements of the thickness of the thinnest steel plate, see Table 4. Table 4 penetration force requirements are in millimeters Level I Level II Level III Penetration 15 27 38

4.1.6 Organic matter resolution (for multi-energy spectrum equipment) It should be able to distinguish organic ladders with thicknesses ranging from 1mm to 120mm and impart orange with different saturations.

4.1.7 Grayscale resolution It should be able to distinguish the aluminum step of the alloy with a thickness ranging from 1mm to 60mm and a thickness difference of not less than 1mm.

4.1.8 Mixture resolution (for multi-energy spectrum equipment) It should be able to distinguish the aluminum step of the alloy with a thickness ranging from 1mm to 60mm and give green with different saturation.

4.1.9 Inorganic resolution (for multi-energy spectrum equipment) It should be able to distinguish steel steps with thicknesses ranging from 0.2mm to 14mm and impart blue with different saturations.

4.1.10 Material resolution (for multi-energy spectrum equipment) It should be able to distinguish three material samples with different equivalent atomic numbers and give the PVC board green, giving the analog board and nylon 6 board Orange.

4.1.11 Effective material resolution (for multi-energy spectrum equipment) It should be able to distinguish three kinds of materials with different equivalent atomic numbers behind the three thickness steel plates of 1.5mm, 2.0mm and 2.5mm. Ben, and give green and blue respectively; should be able to distinguish 6 of the 9 areas of test card 10 in test body B in Appendix A.

4.2 Radiation and environmental safety indicators

4.2.1 Single dose check Should comply with the provisions of

5.2.1 of GB 15208.1-2018.

4.2.2 Peripheral dose equivalent rate Should comply with the provisions of

5.2.2 of GB 15208.1-2018.

4.2.3 Equipment noise Should comply with the provisions of

5.2.3 of GB 15208.1-2018.

4.3 Operating environment

4.3.1 Working environment conditions Should comply with the provisions of

5.3.1 of GB 15208.1-2018.

4.3.2 Power Adaptability Should comply with the provisions of

5.3.2 of GB 15208.1-2018.

4.4 Security performance Should comply with the provisions of

5.4 of GB 15208.1-2018.

4.5 Mechanical structure Should comply with the provisions of

5.5 of GB 15208.1-2018.

4.6 Electromagnetic compatibility Should comply with the provisions of

5.6 of GB 15208.1-2018.

4.7 Anti-shock Should comply with the provisions of

5.7 of GB 15208.1-2018.

4.8 Anti-mechanical danger Should comply with the provisions of

5.8 of GB 15208.1-2018.

5 Test methods

5.1 Environmental requirements Should comply with the provisions of

6.1 of GB 15208.1-2018.

5.2 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.

5.3 Performance Indicator Test

5.3.1 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 direction of ray emission, and placed as close as possible to the X-ray generating device to obtain the best test body image. In addition, image processing is allowed The function achieves the best evaluation results. The test results should be recorded in the format of Appendix C.

5.3.2 Line resolution test Place the test body A in the inspection area, start and complete the scan, and visually measure the X-ray pattern of the test card 1 in the test body A on the display. For example, the device is tested for the ability of a single solid copper wire in the background of the test body, and the result is in accordance with the requirements of 4.1.2.

Note. If you can see most of the wires that are not obstructed by the aluminum step of the alloy, you can think that the device can distinguish the wire.

5.3.3 Penetration resolution test Place the test body A in the inspection area, start and complete the scan, and visually measure the X-ray pattern of the test card 2 in the test body A on the display. For example, the equipment is tested for the ability to separate a single solid copper wire under the alloy aluminum step, and the result is in accordance with the requirements of 4.1.3.

Note. If you can see most of the metal wire blocked by the aluminum alloy step, you can think that the device can distinguish the metal wire.

5.3.4 Spatial resolution test Place the test body A in the inspection area, start and complete the scan, and visually measure the X-ray image of the test card 3 in the test body A on the display. The device is tested for the ability to resolve the wire pair and determine whether the result meets the requirements of 4.1.4.

Note. If all four metal lines of the horizontal and vertical pairs are completely separated, the device can be considered to be able to resolve the pair.

5.3.5 Penetration test Experiment with the following.

a) Place the test body A in the inspection area, start and complete the scan, and visually inspect the X-ray of the test card 4 in the test body A on the display. Image, the ability to penetrate the steel plate of the equipment, the maximum digital value of the steel step corresponding to the three-quarter round lead That is, the thickness of the steel plate can be penetrated by the equipment, and the judgment result meets the requirements of 4.1.5;

Note. If the majority of the three-quarters of the lead blocks blocked by the steel plate can be seen and the direction of the notch can be distinguished, the device can be considered to penetrate the steel step.

b) Observe the warning information of the multi-energy spectrum equipment on the impervious area, and determine whether the result complies with GB 15208.1-2018 5.4.1g) requirements.

5.3.6 Organic matter discrimination test Place the test body B in the inspection area, start and complete the scan, and visually test the X of the test card 5 and the test card 6 in the test body B on the display. The radiographic image determines whether the result meets the requirements of 4.1.6.

Note. If the adjacent steps of the organic ladder sample can be distinguished and can give orange to different saturations, the device can be considered to be distinguishable.

5.3.7 Grayscale/mixture resolution test The test body B is placed in the inspection area, the scan is started and completed, and the X-ray image of the test card 7 in the test body B on the display is visually observed. Observe the number of steps of the resolved aluminum step and the color of the step, and determine whether the results meet the requirements of

5.4 Radiation and environmental safety indicators test

5.4.1 Single dose test Place the center of the radiation sensitive component of the dosimeter in the horizontal center of the surface of the conveyor in the inspection channel, as per The test method specified in

6.3.1 of GB 15208.1-2018 tests the equipment and determines whether the result meets the requirements of 4.2.1.

5.4.2 Peripheral Equivalent Rate Test When the conveying device is stationary, the scatterer with the same number of ray bundles (see Appendix B) is placed in the inspection channel. The horizontal center of the surface, each scatterer is illuminated by a beam of radiation, and the 300×300 plane of the scatterer is parallel to the ray Beam direction. Test the equipment according to the test method specified in

6.3.2 of GB 15208.1-2018, and determine whether the results are consistent.

4.2.2 requirements.

5.4.3 Equipment noise test Test the equipment according to the test method specified in

6.3.3 of GB 15208.1-2018, and determine whether the result meets the requirements of 4.2.3. Claim.

5.5 Power supply range test Test the equipment according to the test method specified in

6.4 of GB 15208.1-2018, and determine whether the result meets the requirements of 4.3.2.

5.6 Safety performance test Test the equipment according to the test method specified in

6.5 of GB 15208.1-2018, and determine whether the result meets the requirements of 4.4.

5.7 Mechanical structure test Test the equipment according to the test method specified in

6.6 of GB 15208.1-2018, and determine whether the result meets the requirements of 4.5.

5.8 Electromagnetic Compatibility Test Test the equipment according to the test method specified in

5.9 Anti-shock test Test the equipment according to the test method specified in

6.8 of GB 15208.1-2018, and judge whether the result meets the requirements of 4.7.

5.10 Anti-mechanical danger test Test the equipment according to the test method specified in

6.9 of GB 15208.1-2018, and determine whether the result meets the requirements of 4.8.

5.11 Prevention of flame spread test The equipment shall be tested in accordance with the test method specified in

6.10 of GB 15208.1-2018, and the result is judged to meet the requirements of 4.9.

5.12 Temperature Limit and Heat Resistance Test Test the equipment according to the test method specified in

6.11 of GB 15208.1-2018, and determine whether the result meets the requirements of 4.10. Claim.

5.13 Environmental Adaptability Test Test the equipment according to the test method specified in

6.12 of GB 15208.1-2018, and determine whether the result meets 4.11. Claim.

5.14 Functional Requirements Test Follow the manufacturer's product instructions to determine if the results meet the requirements of 4.12.

6 Inspection rules

6.1 Inspection classification Should comply with the provisions of

7.1 of GB 15208.1-2018.

6.2 Type inspection Should comply with the provisions of

7.2 of GB 15208.1-2018.

6.3 Factory inspection Should comply with the provisions of

7.3 of GB 15208.1-2018.

6.4 Inspection items The inspection items are shown in Table 5. Table

5 Inspection items Serial number inspection project technical requirements test method type inspection factory inspection 1 line resolution 4.1.2 5.3.2 - -

19 Electromagnetic Compatibility 4.6 5.8 - - 20 electric shock 4.7 5.9 - -

21 Anti-mechanical hazard 4.8 5.10 - -

22 Preventing the spread of flames 4.9 5.11 - -

23 Temperature Limit and Heat Resistance 4.10 5.12 - -

24 Environmental Adaptability 4.11 5.13 - -

25 Functional Requirements 4.12 5.14 - -a a Only 5.12.1a),

5.12.5 in GB 15208.1-2018 are required.

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

7.5 of GB 15208.1-2018.

6.6 Inspection Should comply with the provisions of

7.6 of GB 15208.1-2018.

6.7 Judgment rules Should comply with the provisions of

7.7 of GB 15208.1-2018.

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

8 random technical documents

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 an image resolution test body for testing the line resolution of the device, wearing Transparency, spatial resolution and penetrating power; test body B is a material-resolved test body for organic resolution, gray-scale resolution of test equipment, Mixture resolution, inorganic resolution, material resolution and effective material resolution. The test body contains a test card. The test card is mounted on the fixing plate of the test body and is packaged into a rectangular shape by the upper and lower protective linings. Test body. The protective lining of the test body is made of a primary color foamed polyethylene plate with a density of

0.015 g/cm3 to

0.025 g/cm3. A.2 Test body A (image resolution test body) A.2.1 Overview Test body A includes four test cards. line resolution test card (TEST1), penetration resolution test card (TEST2), spatial resolution test Test card (TEST3) and penetration test card (TEST4). The structure and dimensions of the test body A...

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 35 pages — is available in the English PDF.

Referenced standards

Normative references

GB 15208.1-2018Micro-dose X-ray security inspection systems - Part 1: General technical requirements

Cited by

Similar standards

GB 15208.1-2018|GB 15208.3-2018|GB 12899-2018|GB 18871|GB 4793.1|GB/T 4208

Editions of GB 15208.2

Edition	Title	Revision	Status
GB 15208.2-2018	Micro-dose X-ray security inspection systems - Part 2: Transmission baggage security inspection systems	first revision	Current
GB/T 15208.2-2006	Micro-dose X-ray security inspection systems - Part 2: Transmission baggage security inspection systems	first issue	Superseded

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