GB 15208.2-2026 Micro-dose X-ray security inspection system—Part 2: Small and medium-sized transmission object security inspection system English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB 15208.2-2026
Micro-dose X-ray security inspection system - Part 2: Small and medium-sized transmission object security inspection system
微剂量X射线安全检查设备 第2部分：中小型透射式物品安全检查设备
Issue date: 2026-03-31 Implementation date: 2026-10-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Equipment classification
5 Technical requirements
6 Test methods
7 Inspection rules
8 Packaging, marking, storage and transportation
9 Accompanying technical documents
Annex A (normative) Test objects
Annex B (normative) Scatter block for ambient dose equivalent rate testing
Annex C (informative) Test image evaluation record forms
Figure A.1 — Outline drawing of test object A
Figure A.2 — Internal structure of test object A
Figure A.3 — Assembly drawing of test cards for test object A
Figure A.4 — Assembly drawing of test card fixing plate for test object A
Figure A.5 — Test card fixing plate for test object A
Figure A.6 — Upper protective liner for test object A
Figure A.7 — Lower protective liner for test object A
Figure A.8 — Internal handle for test object
Figure A.9 — Combined drawing of test card 1 and test card 2
Figure A.10 — Assembly drawing of test card 1 and test card 2
Figure A.11 — Aluminium alloy step wedge for test card 2
Figure A.12 — Test card 3
Figure A.13 — Dimensional drawing of test card 3
Figure A.14 — Installation dimensional drawing of test card 3
Figure A.15 — Carbon steel step 1 of test card 4
Figure A.16 — Carbon steel step 2 of test card 4
Figure A.17 — Carbon steel step 3 of test card 4
Figure A.18 — Outline drawing of test object B
Figure A.19 — Schematic diagram of internal structure of test object B and test card imaging
Figure A.20 — Assembly drawing of test cards for test object B
Figure A.21 — Assembly drawing of test card fixing plate for test object B
Figure A.22 — Test card fixing plate
Figure A.23 — Upper protective liner for test object B
Figure A.24 — Lower protective liner for test object B
Figure A.25 — Test card 5
Figure A.26 — Test card 6
Figure A.27 — Test card 7
Figure A.28 — Test card 8
Figure A.29 — Combined drawing of test card 9 and test card 10
Figure A.30 — Nylon 6 plate of test card 9
Figure A.31 — Simulant plate of test card 9
Figure A.32 — PVC plate of test card 9
Figure A.33 — Steel step wedge of test card 10
Table 1 — Equipment classification
Table 2 — Wire display index requirements
Table 3 — Useful penetration resolution index requirements
Table 4 — Spatial resolution index requirements
Table 5 — Penetration index requirements
Table 6 — Inspection items
Table A.1 — Correspondence between serial number and diameter
Table C.1 — Test image evaluation record form 1
Table C.2 — Test image evaluation record form 2
Table C.3 — Test image evaluation record form 3
Micro-dose X-ray security inspection systems — Part 2: Small and medium-sized transmission object security inspection systems
1 Scope
This document specifies the classification, technical requirements, packaging, marking, storage and transportation, and accompanying technical documents for small and medium-sized transmission object security inspection systems, describes the corresponding test methods, and establishes the inspection rules.
This document is applicable to the design, manufacture and inspection of various small and medium-sized transmission object security inspection systems.
This document is not applicable to computed tomography (CT) systems, electron accelerator type systems, and X-ray security inspection systems with an X-ray generation device energy greater than 500 keV.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 15208.1-2026, Micro-dose X-ray security inspection systems — Part 1: General technical specification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 15208.1-2026, as well as the following, apply.
3.1
wire display
The ability of the equipment to resolve a single solid copper wire.
Note: Generally expressed by the nominal diameter of the wire (mm).
3.2
useful penetration resolution
The ability of the equipment to resolve a single solid copper wire under an aluminium alloy step wedge of specified thickness.
Note: Generally expressed by the nominal diameter of the wire (mm).
3.3
simple penetration
The ability of the equipment to penetrate the inspected object.
Note: Generally expressed by the thickness of a steel plate (mm).
3.4
line pair
A group of uniformly arranged metal wires, where the spacing between the two wires is the same as the diameter of the wire.
Note: Generally, the nominal diameter of the wire (mm) is used to express the specification of the line pair.
3.5
spatial resolution
The ability of the equipment to resolve line pairs.
Note: Generally expressed by the nominal diameter of the wire (mm).
3.6
gray level differentiation
The ability of the equipment to distinguish inspected objects of the same material and different thicknesses on a grayscale image.
Note: Generally expressed by the number of distinguishable aluminium alloy steps.
3.7
organic differentiation
The ability of the equipment to resolve effective organic materials.
Note: Generally expressed by the thickness of distinguishable organic steps.
3.8
inorganic differentiation
The ability of the equipment to resolve effective inorganic materials.
Note: Generally expressed by the thickness of distinguishable steel steps.
3.9
effective mixed material
A substance with an effective atomic number between or equal to 10 and 18.
3.10
mixed differentiation
The ability of the equipment to resolve effective mixed materials.
Note: Generally expressed by the thickness of distinguishable aluminium alloy steps.
3.11
materials discrimination
The ability of the equipment to distinguish substances with different effective atomic numbers.
3.12
useful materials discrimination
The ability of the equipment to distinguish substances with different effective atomic numbers under a steel step wedge of specified thickness.
3.13
test piece
A test object used to test and evaluate a certain index of an X-ray image.
3.14
test object
A test object used to test and evaluate performance indices of an X-ray image.
3.15
typical value
The test value obtained when the plane of the test object is perpendicular to the X-ray emission direction and placed at the position closest to the X-ray generation device.
Note: Applicable to performance indices such as wire display, useful penetration resolution, spatial resolution and simple penetration.
3.6
applied value
The test value obtained when the test object is placed horizontally or vertically at the horizontal centre position of the surface of the conveying device within the inspection channel.
Note: Applicable to performance indices such as wire display, useful penetration resolution, spatial resolution and simple penetration.
3.17
maximum load capacity of conveying device
The maximum mass of the inspected object that the conveying device can drag.
3.18
small and medium-sized transmission object security inspection system
A transmission micro-dose X-ray security inspection system used for inspecting objects, in which the smaller of the height and width of the entrance cross-section of any one inspection channel is less than or equal to 1,050 mm.
4 Equipment classification
Small and medium-sized transmission object security inspection systems (hereinafter referred to as "equipment") are classified by the dimensions of the entrance cross-section of the inspection channel and shall comply with the provisions of Table 1.
5 Technical requirements
Standard
GB 15208.2-2026 Micro-dose X-ray security inspection system—Part 2: Small and medium-sized transmission object security inspection system (English)
Standard No.
GB 15208.2-2026
Status
to be valid
Language
English
File Format
PDF
Word Count
21500 words
Translation Price(USD)
645.0
Implemented on
2027-9-1
Delivery
via email in 1~8 business day
Detail of GB 15208.2-2026
Standard No.
GB 15208.2-2026
English Name
Micro-dose X-ray security inspection system—Part 2: Small and medium-sized transmission object security inspection system
GB 15208.2-2026 Micro-dose X-ray security inspection system—Part 2: Small and medium-sized transmission object security inspection system English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB 15208.2-2026
Micro-dose X-ray security inspection system - Part 2: Small and medium-sized transmission object security inspection system
微剂量X射线安全检查设备 第2部分：中小型透射式物品安全检查设备
Issue date: 2026-03-31 Implementation date: 2026-10-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Equipment classification
5 Technical requirements
6 Test methods
7 Inspection rules
8 Packaging, marking, storage and transportation
9 Accompanying technical documents
Annex A (normative) Test objects
Annex B (normative) Scatter block for ambient dose equivalent rate testing
Annex C (informative) Test image evaluation record forms
Figure A.1 — Outline drawing of test object A
Figure A.2 — Internal structure of test object A
Figure A.3 — Assembly drawing of test cards for test object A
Figure A.4 — Assembly drawing of test card fixing plate for test object A
Figure A.5 — Test card fixing plate for test object A
Figure A.6 — Upper protective liner for test object A
Figure A.7 — Lower protective liner for test object A
Figure A.8 — Internal handle for test object
Figure A.9 — Combined drawing of test card 1 and test card 2
Figure A.10 — Assembly drawing of test card 1 and test card 2
Figure A.11 — Aluminium alloy step wedge for test card 2
Figure A.12 — Test card 3
Figure A.13 — Dimensional drawing of test card 3
Figure A.14 — Installation dimensional drawing of test card 3
Figure A.15 — Carbon steel step 1 of test card 4
Figure A.16 — Carbon steel step 2 of test card 4
Figure A.17 — Carbon steel step 3 of test card 4
Figure A.18 — Outline drawing of test object B
Figure A.19 — Schematic diagram of internal structure of test object B and test card imaging
Figure A.20 — Assembly drawing of test cards for test object B
Figure A.21 — Assembly drawing of test card fixing plate for test object B
Figure A.22 — Test card fixing plate
Figure A.23 — Upper protective liner for test object B
Figure A.24 — Lower protective liner for test object B
Figure A.25 — Test card 5
Figure A.26 — Test card 6
Figure A.27 — Test card 7
Figure A.28 — Test card 8
Figure A.29 — Combined drawing of test card 9 and test card 10
Figure A.30 — Nylon 6 plate of test card 9
Figure A.31 — Simulant plate of test card 9
Figure A.32 — PVC plate of test card 9
Figure A.33 — Steel step wedge of test card 10
Table 1 — Equipment classification
Table 2 — Wire display index requirements
Table 3 — Useful penetration resolution index requirements
Table 4 — Spatial resolution index requirements
Table 5 — Penetration index requirements
Table 6 — Inspection items
Table A.1 — Correspondence between serial number and diameter
Table C.1 — Test image evaluation record form 1
Table C.2 — Test image evaluation record form 2
Table C.3 — Test image evaluation record form 3
Micro-dose X-ray security inspection systems — Part 2: Small and medium-sized transmission object security inspection systems
1 Scope
This document specifies the classification, technical requirements, packaging, marking, storage and transportation, and accompanying technical documents for small and medium-sized transmission object security inspection systems, describes the corresponding test methods, and establishes the inspection rules.
This document is applicable to the design, manufacture and inspection of various small and medium-sized transmission object security inspection systems.
This document is not applicable to computed tomography (CT) systems, electron accelerator type systems, and X-ray security inspection systems with an X-ray generation device energy greater than 500 keV.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB 15208.1-2026, Micro-dose X-ray security inspection systems — Part 1: General technical specification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB 15208.1-2026, as well as the following, apply.
3.1
wire display
The ability of the equipment to resolve a single solid copper wire.
Note: Generally expressed by the nominal diameter of the wire (mm).
3.2
useful penetration resolution
The ability of the equipment to resolve a single solid copper wire under an aluminium alloy step wedge of specified thickness.
Note: Generally expressed by the nominal diameter of the wire (mm).
3.3
simple penetration
The ability of the equipment to penetrate the inspected object.
Note: Generally expressed by the thickness of a steel plate (mm).
3.4
line pair
A group of uniformly arranged metal wires, where the spacing between the two wires is the same as the diameter of the wire.
Note: Generally, the nominal diameter of the wire (mm) is used to express the specification of the line pair.
3.5
spatial resolution
The ability of the equipment to resolve line pairs.
Note: Generally expressed by the nominal diameter of the wire (mm).
3.6
gray level differentiation
The ability of the equipment to distinguish inspected objects of the same material and different thicknesses on a grayscale image.
Note: Generally expressed by the number of distinguishable aluminium alloy steps.
3.7
organic differentiation
The ability of the equipment to resolve effective organic materials.
Note: Generally expressed by the thickness of distinguishable organic steps.
3.8
inorganic differentiation
The ability of the equipment to resolve effective inorganic materials.
Note: Generally expressed by the thickness of distinguishable steel steps.
3.9
effective mixed material
A substance with an effective atomic number between or equal to 10 and 18.
3.10
mixed differentiation
The ability of the equipment to resolve effective mixed materials.
Note: Generally expressed by the thickness of distinguishable aluminium alloy steps.
3.11
materials discrimination
The ability of the equipment to distinguish substances with different effective atomic numbers.
3.12
useful materials discrimination
The ability of the equipment to distinguish substances with different effective atomic numbers under a steel step wedge of specified thickness.
3.13
test piece
A test object used to test and evaluate a certain index of an X-ray image.
3.14
test object
A test object used to test and evaluate performance indices of an X-ray image.
3.15
typical value
The test value obtained when the plane of the test object is perpendicular to the X-ray emission direction and placed at the position closest to the X-ray generation device.
Note: Applicable to performance indices such as wire display, useful penetration resolution, spatial resolution and simple penetration.
3.6
applied value
The test value obtained when the test object is placed horizontally or vertically at the horizontal centre position of the surface of the conveying device within the inspection channel.
Note: Applicable to performance indices such as wire display, useful penetration resolution, spatial resolution and simple penetration.
3.17
maximum load capacity of conveying device
The maximum mass of the inspected object that the conveying device can drag.
3.18
small and medium-sized transmission object security inspection system
A transmission micro-dose X-ray security inspection system used for inspecting objects, in which the smaller of the height and width of the entrance cross-section of any one inspection channel is less than or equal to 1,050 mm.
4 Equipment classification
Small and medium-sized transmission object security inspection systems (hereinafter referred to as "equipment") are classified by the dimensions of the entrance cross-section of the inspection channel and shall comply with the provisions of Table 1.
5 Technical requirements
