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GA 926-2011: General technical requirement for micro-dose X-ray transmission body scanners
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General technical requirement for micro-dose X-ray transmission body scanners
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Basic data | Standard ID | GA 926-2011 (GA926-2011) | | Description (Translated English) | General technical requirement for micro-dose X-ray transmission body scanners | | Sector / Industry | Public Security (Police) Industry Standard | | Classification of Chinese Standard | A91 | | Classification of International Standard | 13.310 | | Word Count Estimation | 14,148 | | Date of Issue | 2011-03-25 | | Date of Implementation | 2011-07-01 | | Quoted Standard | GB/T 2423.1; GB/T 2423.2; GB/T 2423.3; GB/T 2423.5; GB/T 2423.10; GB 15208.1-2005; GB/T 15208.2-2006 | | Regulation (derived from) | Industry Standard Record Announcement No. 4 of 2012 (No. 148) | | Issuing agency(ies) | Ministry of Public Security | | Summary | This standard specifies the technical requirements and test methods of the micro-dose transmission X-ray human safety inspection equipment (hereinafter referred to as equipment), which is the basic basis for the design, manufacture, assembly, acceptance and use of such equipment and the development of product standards. This standard applies to all types of micro-dose transmission X-ray human security inspection equipment. | GA 926-2011: General technical requirement for micro-dose X-ray transmission body scanners---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.
General technical requirement for micro-dose X-ray transmission body scanners
ICS 13.310
A91
People's Republic of China Public Security Industry Standards
Micro-dose X-ray transmission of human security inspection equipment
General technical requirements
Issued on. 2011-03-25
2011-07-01 implementation
People's Republic of China Ministry of Public Security
Foreword
5.1,5.2,5.4,5.7 this standard is mandatory, the rest are recommended.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by First Research Institute of Ministry of Public Security.
This standard by the National Security Alarm System Standardization Technical Committee (SAC/TC100) centralized.
This standard was drafted. First Research Institute of Ministry of Public Security, Beijing Technology Co., Ltd. in the shield Min analysis, Nuctech technology Company Limited
Secretary, Ministry of Public Security the third Institute.
The main drafters of this standard. Wangqiu Hong, Cui Yuhua, Lirui Yun, Chen Xueliang, Liang Ze, Chen Li, Li Yongqing, Huomei Chun.
Micro-dose X-ray transmission of human security inspection equipment
General technical requirements
1 Scope
This standard specifies the transmission of micro-dose X-ray security inspection equipment body (hereinafter referred to as the device) technical requirements, test methods, is
Design, manufacture, assembly, acceptance and use of such equipment and the fundamental basis for development of product standards.
This standard applies to all types of micro-dose X-ray transmission of human security inspection equipment.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 2423.1 Environmental testing for electric and electronic products Part 2. Test methods Test A. Cold
GB/T 2423.2 Environmental testing for electric and electronic products Part 2. Test methods Test B. Dry heat
GB/T 2423.3 Environmental testing for electric and electronic products Part 2. Test methods - Test Cab. Damp heat test
GB/T 2423.5 Environmental testing for electric and electronic products Part 2. Test methods Test Ea and guidance. Shock
GB/T 2423.10 Environmental testing for electric and electronic products Part 2. Test methods Test Fc. Vibration (sinusoidal)
GB 15208.1-2005 micro-dose X-ray security inspection equipment - Part 1. General technical requirements
GB/T 15208.2-2006 micro-dose X-ray security inspection equipment - Part 2. Test Body
3 Terms and Definitions
GB 15208.1-2005 define the following terms and definitions apply to this document.
3.1
Micro-dose X-ray transmission of human security inspection equipment micro-doseX-raytransmissionbodyscanner
Check inside and outside the human body for carrying contraband, a single dose of less than 4μGy check transmissive X-ray security inspection body.
3.2
Unshielded transmission X-ray micro-dose human safety inspection equipment unshieldedmicro-doseX-raytransmission
bodyscanner
Detecting device does not install special guards, radiation protection needs to designate zones or in micro doses meet the health protection requirements through the engine room
X-ray beam human security inspection equipment.
3.3
Shielded transmission X-ray micro-dose human safety inspection equipment shieldedmicro-doseX-raytransmissionbodyscanner
Radiation detection equipment guards, leaving the device in any case at 5cm, and the leakage radiation dose rate is less than 3μGy/h micro-agents
The amount of transmitted X-ray security inspection body.
3.4
Contrast sensitivity contrastsensitivity
The minimum prescribed thickness has placed under Plexiglas satisfies a predetermined dose of a single inspection, the inspection system can be displayed after the absorber
Than the thickness of the machine and the thickness of the glass sheet plexiglass absorption.
3.5
Moving parts movingassembly
For carrying the subject or the mechanical structure of the X-ray inspection apparatus.
3.6
Single check time timeperinspection
Moving parts start moving to the image display completion time.
3.7
Detection height scanningheight
The maximum height of the body can be detected.
4 Products
4.1 Classification by detection principle
Classification by detection principle, the transmission of micro-dose X-ray security screening equipment can be divided into the body.
a) non-energy-resolved type;
b) energy resolution type.
4.2 Classification according to structure
According to the structure in the form of classification, transmitted micro-dose X-ray security screening equipment can be divided into the body.
a) unshielded;
b) shielded.
5 General technical requirements
5.1 Performance Requirements
5.1.1 Contrast sensitivity
Contrast sensitivity of the device should be less than equal to 1.0%.
5.1.2 Line Resolution
Equipment should be able to distinguish between the nominal diameter of 0.127mm single solid core copper wire.
5.1.3 Spatial resolution
It should be able to distinguish between a diameter of 1.3mm wire pair.
5.1.4 organics resolution (energy resolution type device)
Equipment should be able to distinguish a thickness of 1mm ~ 120mm poly methyl methacrylate, and give different saturation of orange.
5.1.5 The mixture was resolved (energy resolution type device)
Equipment should be able to distinguish a thickness of 1mm ~ 60mm aluminum, and give different saturation green.
5.1.6 inorganic resolution (energy resolution type device)
It should be able to distinguish between a thickness of 0.2mm ~ 14mm of steel, and give different saturation of blue.
5.1.7 Single check time
Single inspection time should be less than 15s.
5.1.8 Detection height
Detect height should be not less than 2m.
5.2 Radiation and environmental safety requirements
5.2.1 Single dose inspection
Check the dose of a single device should be less than or equal to 4μGy.
5.2.2 Closed micro-dose X-ray transmission of human security inspection equipment leaks radiation dose rate
In the outer surface of the device from anywhere 5cm (including equipment inlet, at the outlet), X-ray leakage dose rate should be less than 3μGy/h.
5.2.3 Non-enclosed micro-dose X-ray transmission body ray security inspection equipment protection requirements
The use of such equipment, if an X-ray machine room, computer room on each side of the wall thickness of 1mm should be protective lead equivalent. No room should be delineated
Radiation protection areas, radiation protection anywhere outside the boundary area should meet the dose of X-ray leakage rate of less than 2.5μGy/h.
5.2.4 equipment noise
Away from the outer surface of the device anywhere, equipment noise should be less than or equal to 1m of 65dB (A).
5.3 operating environment requirements
GB 15208.1-2005 shall comply with the requirements in 4.3.
5.4 Safety Requirements
Shall comply with GB 15208.1-2005 required (non-energy resolution-type devices 4.4.1g except) 4.4.
5.5 mechanical structure
Shall comply with the requirements of 4.5 in GB 15208.1-2005.
5.6 Electromagnetic compatibility requirements
GB 15208.1-2005 shall comply with the requirements in 4.6.
5.7 Electrical Safety
Shall comply with the requirements of 4.7 in GB 15208.1-2005.
5.8 Environmental Adaptability
5.8.1 Overview
Micro-dose X-ray transmission of human security inspection equipment environmental adaptability should meet the following requirements.
a) the transmission of micro-dose X-ray inspection equipment for large-scale human security and electronic products, do not have the time to conduct environmental testing machine, allowing
Xu of electrical components having individual functions 5.8.2 and 5.8.4 respectively, according to the requirements of environmental tests. Machine or its electrical parts
Test specifications should meet the indicator device or component.
b) having individual functions, electrical components, 5.8.2 and 5.8.4 after suitability test environment, access to the whole of the whole machine 5.1.1 ~
5.1.6 Indicator test, its performance should be consistent with the requirements of 5.1.1 ~ 5.1.6.
c) After the climatic and mechanical environmental test equipment should not be corrosion and mechanical damage phenomenon.
d) After the completion of the test environment Damp heat, insulation resistance test immediately. The test method according to GB 15208.1-2005
5.9.2, the test results shall comply with the requirements of 4.7.2 in GB 15208.1-2005.
5.8.2 Climate requirements
Climate requirements are shown in Table 1 (low-temperature storage test does not include a liquid crystal display).
Table 1 Climate requirements
Pilot projects severity Test Method
Machine electrical components having individual functions
duration/
Check item
duration/
Check item
Low temperature (0 ± 3) ℃
According to GB/T 2423.1 Test A feed
OK, about the project when the power test
High temperature (45 ± 2) ℃
According to GB/T 2423.2 Test B feed
OK, the whole process is energized
Constant heat
(40 ± 2) ℃
(93 ± 3)% RH
(Non-condensing)
According to GB/T 2423.3 Test Cab
Conducted testing energized about the project
Before the experiment
The initial measurement and
The end of each test
Before the test, should be
5.1.1 Test ~
5.1.6
Before the experiment
The initial measurement and
The end of each test
Check before items
And methods by the product
standard regulation
Low temperature storage (-40 ± 3) ℃
According to GB/T 2423.1 Test A feed
OK, not energized during the test
After the test
At least restore 4h
After testing, should be seized
Test 5.1.1 ~
5.1.6
End test
After at least recover
4h after detection,
Checking items and
The method of the product
standard regulation
5.8.3 Environmental Requirements machine mechanics
The whole mechanical environment requirements shown in Table 2.
Table 2 machine mechanics environmental requirements
Pilot projects severities check items
Transportation test
(Analog or transport)
Test mileage.200km;
Highway level. three road or simulated transport;
Traveling speed. 20km/h ~ 40km/h
Initial measurements and testing After the test before the start of the test, should be checked
5.1.1 ~ 5.1.6
Environmental Requirements 5.8.4 Mechanical Parts
Electrical components mechanical environment independent functional requirements are shown in Table 3.
Table 3 Mechanical environment requirements for components
Pilot projects severities
Having individual functions, electrical components
Test methods for checking items
Vibration test Fc
Frequency Range/Hz. 10 ~ 55 ~ 10 (n
Sine wave);
Amplitude /mm.0.15;
Vibration direction. X, Y, Z;
Duration/min. 10
GB/T 2423.10
Impact test Ea
Peak acceleration/(m/s2). 150;
Duration/ms. 11;
Shock direction. Z direction;
Impact. 18 times
GB/T 2423.5
Inspection items and methods by the product
standard regulation
6 Test methods
6.1 environmental conditions
Unless otherwise specified, all the tests were normal environmental conditions atmospheric conditions.
Ambient temperature. 15 ℃ ~ 35 ℃.
Relative Humidity. 45% to 75%.
Atmospheric pressure. 86kPa ~ 106kPa.
6.2 The main test equipment and instruments
Ionization dosimeter. minimum range of not more than 10μGy, dosimeters to go through national testing department test.
High sensitivity dosimeter. minimum range of not more than 0.1μGy/h, dosimeters to go through national testing department test.
Sound Level Meter. Frequency range 25Hz ~ 8kHz.
Stopwatch.
Test Body. See GB/T 15208.2-2006.
Leakage radiation dose rate testing diffuser. See Appendix A.
6.3 Detection mechanical structure
Detecting mechanical structure according to GB 15208.1-2005 5.3 execution.
6.4 Performance Requirements Test
6.4.1 Contrast sensitivity test
Test methods in accordance with Appendix B to perform, it is determined whether the results meet the requirements of 5.1.1.
6.4.2 Resolution test line
The GB/T 15208.2-2006 the test body A is placed in the middle of the detection area, the test body perpendicular to the plane of the square-ray
To the normal operation of equipment, visual display on the test card A test body X-ray images 1, it is determined at the test device to distinguish a single body background
Solid copper ability to meet the requirements of 5.1.2.
6.4.3 Spatial resolution test
The GB/T 15208.2-2006 the test body A is placed in the middle of the detection area, the test body perpendicular to the plane of the square-ray
To the normal operation of equipment, visual display on the test card A test body X-ray image 3 decision device resolution is the ability of the metal wire
Whether it meets the requirements of 5.1.3.
6.4.4 organic matter resolved detector
The GB/T 15208.2-2006 the test body B is placed in the middle of the detection area, the test body perpendicular to the plane of the square-ray
To the normal operation of equipment, visual display B on the test specimen in the test card X-ray image 6, it is determined whether the results meet the requirements of 5.1.4.
If the sample can be distinguished from neighboring organic matter, and can give different color saturation of an orange, you can assume that the device can distinguish.
6.4.5 The mixture was resolved detector
The GB/T 15208.2-2006 the test body B is placed in the middle of the detection area, the test body perpendicular to the plane of the square-ray
To the normal operation of equipment, visual display B on the test specimen in the test card 7 X-ray image, it is determined whether the results meet the requirements of 5.1.5.
If the aluminum ladder can be distinguished from samples adjacent ladder, and can give different color saturation of green, you can assume that the device can distinguish.
6.4.6 inorganic resolved detector
The GB/T 15208.2-2006 the test body B is placed in the middle of the detection area, the test body perpendicular to the plane of the square-ray
To the normal operation of equipment, visual display on the test body B X-ray image of the test card 8, it is determined whether the result 5.1.6
Claim.
If the steel ladder can be distinguished from samples adjacent ladder, and can give different color saturation of the blue, you can assume that the device can distinguish.
6.4.7 single inspection time detecting
Use the stopwatch to detect moving parts start moving to the image display completion time, it is determined whether the results meet the requirements of 5.1.7.
6.4.8 Detection height detection
Height device channels should be greater than or equal 2m. It was placed at the bottom and top of the channel two 10mm height of less than or equal
Plexiglass block, open X-ray scan of the channel, it is determined whether the X-ray image shows two completely organic glass bottom and top
Glass blocks.
6.5 Radiation and Environmental Indicators test
6.5.1 single dose of the test inspection
The ionization dosimeter is set to dose profile, zero, and then placed in an intermediate position detection area, continuous operation 10 times, the cumulative number of demand from
The average value was determined to check a single dose meets the requirements of 5.2.1.
6.5.2 Test Closed micro-dose X-ray transmission of human security inspection equipment leaks radiation dose rate
Leak detection channel placed in the radiation dose rate testing scatterers (see Appendix A), X-ray emitting device, leaving the cabinet at 5cm
At any point, with high sensitivity dosimeter measuring radiation dose rate of leakage, it is determined whether the results meet the requirements of 5.2.2.
6.5.3 Test transmission of non-enclosed micro-dose X-ray security inspection equipment body radiation protection requirements
If such equipment is installed in the X-ray machine room, computer room on each side of the wall thickness of 1mm should be protective lead equivalent. The use of such provided
If there is no equipment room should be delineated area of radiation protection, radiation protection zone boundary is determined at any of the X-ray dose rate of leakage Meets 5.2.3
Requirements.
6.5.4 Test equipment noise
The moving part is running at full capacity, leaving any device 1m at the point, with a sound level meter measurement noise, it is determined whether the result
Requirements 5.2.4.
6.6 Security Functional Test
6.6.1 Interlock Test
Any interlock cut-emitting region, it is determined whether the X-ray emission can be stopped immediately, and the X-ray emission light is off.
6.6.2 Emergency stop test
Pressing any of the emergency stop switch, the device determines whether the X-ray generator power supply system and moving parts can be cut immediately.
6.7 Scope of supply test
According to the test method specified in 5.7 of GB 15208.1-2005 be determined whether the results meet the requirements of 5.1.1 ~ 5.1.6.
6.8 Environmental Adaptability Test
Table 1 to Table 3 requirements and GB/T 2423.1, GB/T 2423.2, GB/T 2423.3, GB/T 2423.5 and GB/T 2423.10 regulations
Given test method.
6.9 Electrical safety requirements, test
According to the test method specified in 5.9 GB 15208.1-2005 performed.
6.10 Electromagnetic compatibility test
According to the test methods specified in 5.10 of GB 15208.1-2005 performed.
6.11 Mechanical environmental testing machine
According to GB 15208.1-2005 Test methods were 5.11 predetermined performance indicators to determine whether a device is 5.1.1 ~ 5.1.6
As well as the requirements of 5.2.
7 Evaluation test image
7.1 Evaluation Principles
Evaluation of the test images using subjective evaluation method.
7.2 Evaluation Record
The evaluation team members will evaluate the results of the test fills the test image evaluation image recording sheet, the image evaluation test record table see attached
Record C.
7.3 Evaluation Conclusion
Evaluation records of the members of the evaluation team statistics, test image is formed on the final performance evaluation results.
8 packaging, labeling, storage and transport
According to GB 15208.1-2005 provisions of Chapter 7 of the proceeds, which the liquid crystal display cryogenic storage should be above 0 ℃.
9 Random technical documents
9.1 Overview
Equipment should be accompanied by at least include the use of the specification and the user can query for the address, including the file. Instructions and user interface should
It is written in Chinese. Random technical documentation is considered part of the equipment.
Warning instructions and warning symbols (marked on the device) explanations shall be given in a random technical documents.
9.2 User's Guide
Instructions should be provided all the information to make their technical equipment for operation. It includes the following.
a) The method of installation and removal equipment;
b) the basic principles and operating instructions;
c) connecting cable between the device components;
d) supply voltage range, supply frequency range, power consumption machine;
e) working environment and storage conditions of temperature and humidity range;
f) equipment dimensions, weight;
g) identify and use the operating control means;
h) description and display alarm information;
i) maintenance, inspection, maintenance and cleaning.
Appendix A
(Normative)
Leakage radiation dose rate testing scatterers
When the leakage radiation dose rate testing micro-dose X-ray transmission of human security inspection equipment needs to be placed within a detection channel
Diffuser to simulate the human subject is scattered situation. Scattering body is molded into the water, the water no more than 2mm from the mold wall thickness polyethylene cylinder injection
Water composition, volume should at least meet the requirements of Table A.1.
Table A.1 scatterer volume requirements
Scatterers
Long/mm Diameter/mm
Appendix B
(Normative)
Contrast sensitivity test body and test methods
B.1 contrast sensitivity test body
Contrast sensitivity test body made of a transparent plexiglass, divided into two parts, body and absorb plexiglass plexiglass contrast body. Organic glass
Glass absorbent body made of plexiglass different thickness of the composition, contrast plexiglass body in three sizes, specific requirements in Table B.1.
Table B.1 requested contrast sensitivity test body
No. Name Specification (length × width × thickness) Number
A plexiglass absorbent body 1 300mm × 300mm × 40mm 3
2 plexiglass absorbent body 2 300mm × 300mm × 30mm 2
3 PMMA absorbent body 3 300mm × 300mm × 10mm 2
4 Comparative plexiglass body 1 60mm × 60mm × 2.0mm 1
5 Comparative plexiglass body 2 60mm × 60mm × 1.5mm 1
6 Comparative plexiglass body 3 60mm × 60mm × 1.0mm 1
The maximum thickness of the absorber superimposed 200mm, surrounded by bolting into one, with double-sided adhesive tape according to Comparative body position shown affixed to suck
Income outermost body. Absorbent body and contrasting body fixed inside the stent, contrast sensitivity testing body. Contrast sensitivity test structure
Figure B.1.
B.2 Test Method
Contrast sensitivity test methods are.
a) as shown in Figure B.1, select a thickness of 200mm plexiglass plexiglass absorber and the corresponding comparative body. Plexiglass
Distance between the body and a plexiglass edge contrast and contrast plexiglass body absorbing boundary shall be greater than or equal to
40mm.
b) the contrast sensitivity test body is placed in the middle of the detection zone, and plexiglass direction in the plane perpendicular to the rays.
c) scanning at rated speed, measured enables inspection system shows the minimum after plexiglass plexiglass absorber contrast member
Thickness, according to the data obtained and the following formula to calculate the corresponding value of contrast sensitivity.
Contrast sensitivity =
Compare plexiglass thickness
Plexiglass absorber thickness × 100%
Millimeters
1 --- 10mm plexiglass absorbent body (2);
2 --- 30mm plexiglass absorbent body (2);
3 --- 40mm plexiglass absorber (3);
4 --- Comparative plexiglass body 1 (60mm × 60mm × 2.0mm);
5 --- Comparative plexiglass body 2 (60mm × 60mm × 1.5mm);
6 --- Comparative plexiglass body 3 (60mm × 60mm × 1.0mm).
Figure B.1 contrast sensitivity test body
Appendix C
(Informative)
Image evaluation test record form
Evaluation of the test image recording shown in table C.1.
Table C.1 image evaluation test record form
Date Time Tester
Equipment manufacturers Model Serial Number
Display Manufacturers Model Serial Number
X-ray source high value of the X-ray beam source value
No. Test Project test results the best selection of image processing functions
1 contrast sensitivity
2 line resolution (TEST1)
3 spatial resolution (TEST3)
Level.
vertical.
4 thin organic resolution (TEST5)
5 organics resolution (TEST6)
6 mixture resolution (TEST7)
7 inorganic resolution (TEST8)
Note 1. Eligible project with "○" mark.
Note 2. allows the use of enhanced amplification, reverse, high penetrating power and other image processing tools to achieve the best evaluation results.
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