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GB 15208.1-2018: Micro-dose X-ray security inspection system -- Part 1: General technical requirements
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Basic data | Standard ID | GB 15208.1-2018 (GB15208.1-2018) | | Description (Translated English) | Micro-dose X-ray security inspection system -- Part 1: General technical requirements | | Sector / Industry | National Standard | | Classification of Chinese Standard | A91 | | Classification of International Standard | 13.310 | | Word Count Estimation | 22,234 | | Date of Issue | 2018-11-19 | | Date of Implementation | 2019-12-01 | | Older Standard (superseded by this standard) | GB 15208.1-2005 | | Regulation (derived from) | National Standard Announcement No. 15 of 2018 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB 15208.1-2018: Micro-dose X-ray security inspection system -- Part 1: General technical requirements
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Micro-dose X-ray security inspection system--Part 1. General technical requirements
ICS 13.310
A91
National Standards of People's Republic of China
Replace GB 15208.1-2005
Micro-dose X-ray safety inspection equipment
Part 1. General technical requirements
Part 1. Generaltechnicalrequirements
Published on.2018-11-19
2019-12-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Equipment Category 4
5 General technical requirements 4
6 Test method 9
7 Inspection rules 12
8 Packaging, labeling, storage and transportation 13
9 Random technical documents 14
Appendix A (Normative Appendix) Single Test Dose Test Method 15
Appendix B (Normative Appendix) Test Method for Peripheral Equivalent Rate 16
Reference 17
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 first part of GB 15208.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB 15208.1-2005 "Micro-dose X-ray safety inspection equipment Part 1. General technical requirements", and
The main technical changes compared with GB 15208.1-2005 are as follows.
--- Added 8 terms. equivalent atomic number, ambient dose equivalent rate, transmission X-ray safety inspection equipment, backscatter X
Radiation safety inspection equipment, control area, supervision area, open micro-dose X-ray safety inspection equipment, closed micro-dose X-ray
Line safety inspection equipment (see 3.1, 3.8, 3.12, 3.13, 3.16, 3.17, 3.18, 3.19);
--- Revised the names of the five terms (see 3.2, 3.3, 3.4, 3.14, 3.15, 3.11, 3.12, 3.13, 3.22, 3.23 of the.2005 edition);
--- Revised the definition of three terms. single-check dose, micro-dose X-ray safety inspection equipment, safety interlock (see 3.7,
3.11, 3.20, 3.17, 3.21, 3.24 of the.2005 edition);
--- Removed 11 terms (see 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.16 in.2005);
--- Added equipment classification (see Chapter 4);
--- Removed performance indicator requirements (see version 4.1 of.2005);
--- Revised radiation and environmental safety indicators (see 5.2,.2005 edition 4.2);
---Modified working environment conditions (see 5.3.1, 4.3.1 of the.2005 edition);
---Modified equipment safety requirements [see 5.4.1e), 5.4.1g),.2005 version 4.4.1e), 4.4.1g)];
---Modified mechanical structure (see 5.5,.2005 version 4.5);
---Modified electromagnetic compatibility requirements (see 5.6, 4.6 of the.2005 edition);
---Modified electrical safety (see 5.7, 5.8, 5.9, 5.10, 4.7 of the.2005 edition);
---Modified environmental adaptability (see 5.11, 4.8 of the.2005 edition);
--- Added functional requirements (see 5.12);
--- Modified the main instruments and tools for testing (see 6.2, 5.2 of.2005 edition);
--- Revised radiation and environmental indicators test (see 6.3, 5.5 of.2005);
--- Modified the power supply scope experiment (see 6.4,.2005 version 5.7);
---Modified security performance test (see 6.5, 5.6 of.2005 edition);
--- Removed the performance indicator test (see 5.4 of.2005 edition);
--- Revised the visual inspection (see 6.6.1, 5.3.1 of the.2005 edition);
--- Modified the electromagnetic compatibility test (see 6.7,.2005 version 5.10);
--- Revised the electrical safety test (see 6.8, 6.9, 6.10, 6.11, 5.9 of the.2005 edition);
---Modified environmental adaptability test (see 6.12,.2005 edition of 5.8);
--- Added functional requirements testing (see 6.13);
--- Removed the evaluation of the test image (see Chapter 6 of the.2005 edition);
--- Added inspection rules (see Chapter 7);
---Modified packaging requirements [see 8.1a),.2005 edition of 8.1a)];
--- Revised the marking requirements (see 8.2, 8.2 of the.2005 edition);
--- Revised the normative appendix (see Appendix A, Appendix B, Appendix A, Appendix B of the.2005 edition);
--- Deleted the informative appendix (see Appendix C of the.2005 edition).
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,
Tongfang Weishi Technology Co., Ltd., National Security and Alarm System Product Quality Supervision and Inspection Center (Beijing), National Security Alarm
System Product Quality Supervision and Inspection Center (Shanghai), Shanghai Gaojing Imaging Technology Co., Ltd.
The main drafters of this section. Zhao Lei, Chen Xueliang, Chen Li, Li Yongqing, Zhao Yue, Zhang Wei, Tao Lei, Liu Caixia, Peng Ningxuan, Chen Yu, Luther,
Lu Yang, Niu Yujie.
The previous versions of the standards replaced by this section are.
---GB 15208-1994;
---GB 15208.1-2005.
Micro-dose X-ray safety inspection equipment
Part 1. General technical requirements
1 Scope
This part of GB 15208 specifies the classification, general technical requirements, test methods and inspection rules for micro-dose X-ray safety inspection equipment.
Then, packaging, marking, storage and transportation, and random technical documents.
This section applies to the design, manufacture, acceptance and use of various micro-dose X-ray safety inspection equipment.
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/T 191-2008 packaging storage and transportation icon
GB/T 2423.1-2008 Environmental testing of electric and electronic products - Part 2. Test methods Test A. Low temperature
GB/T 2423.2-2008 Environmental testing of electrical and electronic products - Part 2. Test methods Test B. High temperature
GB/T 2423.3-2016 Environmental testing - Part 2. Test method test Cab. constant damp heat test
GB/T 2423.5-1995 Environmental testing for electric and electronic products - Part 2. Test methods Test Ea and guide. Impact
GB/T 2423.10-2008 Environmental testing of electric and electronic products - Part 2. Test method test Fc. Vibration (sinusoidal)
GB/T 4208-2017 enclosure protection grade (IP code)
GB 4793.1-2007 Safety requirements for electrical equipment for measurement, control and laboratory - Part 1. General requirements
GB/T 9254-2008 Radio disturbance limits and methods of measurement for information technology equipment
GB/T 17626.2-2006 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test
GB/T 17626.3-2016 Electromagnetic compatibility test and measurement technology RF electromagnetic field radiation immunity test
GB/T 17626.4-2008 Electromagnetic compatibility test and measurement technology Electrical fast transient burst immunity test
GB/T 17626.5-2008 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test
GB/T 17626.6-2008 Electromagnetic compatibility test and measurement technology Conducted disturbance immunity of RF field induction
GB/T 17626.11-2008 Electromagnetic compatibility test and measurement techniques Immunity to voltage dips, short interruptions and voltage changes
test
GB/T 17799.1-2017 Electromagnetic compatibility common standards Immunity in residential, commercial and light industrial environments
GB/T 17799.2-2003 Electromagnetic compatibility general standard immunity test in industrial environment
GB/T 17799.3-2012 Common standards for electromagnetic compatibility, emissions in residential, commercial and light industrial environments
GB/T 17799.4-2012 Electromagnetic compatibility general standard emission in industrial environment
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Equivalent atomic number
Zeff
An atomic number representing the theoretical element of a material property that has the same X-ray attenuation characteristics as this material.
3.2
Equivalent organic matter
A substance with an equivalent atomic number below 10.
3.3
Equivalent inorganic effectiveinorganicmaterial
A substance with an equivalent atomic number higher than 18.
3.4
Equivalent mixture effectivemixedmaterial
A substance whose equivalent atomic number is between 10 and 18.
3.5
Wear impenetrable area impenetrablearea
The intensity of X-ray penetration of the object to reach the X-ray detector is almost zero, and the device cannot recognize the basic structural features of the object under test.
region.
3.6
Material uncertainty area undeterminedarea
Although the ray can penetrate, it is impossible to identify the area of the material property of the object to be inspected.
3.7
Single dose doseoseperinspection
The subject undergoes an examination to absorb the absorbed kinetic energy of the air.
Note. The single-dose dose unit is Gy, 1Gy=1J/kg.
3.8
Peripheral dose equivalent rate ambientdoseequivalentrate
H *(10)
The quotient of dH *(10) and dt, where dH *(10) is the increment of the surrounding dose equivalent within the time interval dt.
H *(10)=
dH *(10)
Dt
Note. The International System of Units (SI) unit for the surrounding dose equivalent rate is [Watt] per second (Sv/s). The unit of the surrounding dose equivalent rate is [Watt] or its multiple
Or the quotient of the score with the appropriate time unit (for example. mSv/h).
[GB/T 4835.1-2012, definition 3.3]
3.9
Scatter scatterblock
An object that scatters radiation to produce the worst radiation conditions.
3.10
X-ray security inspection equipment X-raysecurityinspectionsystem
X-ray intensity distribution or energy spectrum distribution is measured by the interaction of X-rays with the object to be inspected, and an X-ray image of the object to be inspected is generated.
An apparatus that recognizes the safety of the object to be inspected based on the information of the material to be inspected.
3.11
Micro-dose X-ray safety inspection equipment micro-doseX-raysecurityinspectionsystem
A single inspection of X-ray safety inspection equipment with a dose less than or equal to 10 μGy.
3.12
Transmissive micro-dose X-ray safety inspection equipment transmissionmicro-doseX-raysecurityinspectionsystem
Generating an X-ray image of the object to be inspected or providing a detected pair by measuring an X-ray intensity distribution or an energy spectrum distribution passing through the object to be inspected
Like material information, a micro-dose X-ray safety inspection device that identifies the safety of the object to be inspected.
3.13
Backscatter micro-dose X-ray safety inspection equipment backscattermicro-doseX-raysecurityinspectionsystem
Using the scattering effect of X-ray photons and matter interaction, collecting backscattered X-rays scattered by the object under test and generating a test
Micro-dose X-ray safety inspection device for object images.
3.14
Single-energy spectrum micro-dose X-ray safety inspection equipment single-energymicro-doseX-raysecurityinspectionsystem
Using X-ray interaction with the object to be inspected, measuring the intensity distribution of the X-ray and imaging the structural characteristics of the object to be inspected
Micro-dose X-ray safety inspection equipment.
3.15
Multi-energy micro-dose X-ray security inspection system multi-energy micro-doseX-ray securityinspectionsystem
According to the laws of different equivalent atomic numbers on the absorption characteristics of X-ray energy spectrum, the material properties of the object to be inspected are judged.
A micro-dose X-ray safety inspection device that recognizes and images.
3.16
Control area controlledarea
An area defined in a radiation workplace where special protective measures and safety measures are required or may be required,
so that.
a) control normal exposure or prevent contamination expansion under normal operating conditions;
b) Prevent potential exposure or limit its extent.
[GB 18871-2002, definition J5.5]
3.17
Supervised area supervisedarea
Anyone who has not been identified as a control area, usually does not need to take special protective measures and safety measures, but must constantly check his occupational exposure conditions
What area.
[GB 18871-2002, definition J5.6]
3.18
Open micro-dose X-ray safety inspection equipment unshieldedmicro-doseX-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 micro-dose X-ray safety inspection equipment at the location.
3.19
Closed micro-dose X-ray safety inspection equipment shieldedmicro-doseX-raysecurityinspectionsystem
Micro-dose X-ray safety inspection with radiation protection devices for shielding scattering, leaking rays, etc. generated during the inspection process
device.
3.20
Safety interlocking device safetyinterlock
A device that protects the X-ray equipment from working safely and prevents X-rays from being emitted under abnormal conditions.
3.21
Emergency stop switch emergencystopswitch
In an emergency, the components of the power supply of the X-ray generating device and the conveying device can be cut off immediately.
3.22
X-ray generating device X-raygeneratingdevice
Generate and control a combination of all components of the X-ray emission.
Note. Usually consists of an X-ray tube, a high voltage generator, a controller, and a cooling system.
3.23
X-ray detector X-raydetector
A sensor that detects (measures) X-rays and converts X-ray intensities into electrical signals that can be processed.
3.24
Test body testblock
A test object for testing and evaluating X-ray image performance indicators.
3.25
Test card testobject
A test object used to test and evaluate an indicator of X-ray images.
4 Equipment classification
4.1 Micro-dose X-ray safety inspection equipment (hereinafter referred to as equipment) is divided into. according to technical characteristics.
a) transmissive equipment;
b) backscattering equipment;
c) Transmissive, backscatter combined equipment.
4.2 Equipment is divided according to material resolution.
a) single energy spectrum equipment;
b) Multi-spectral spectrum equipment.
4.3 Equipment is classified according to the type of protection.
a) open equipment;
b) Closed equipment.
4.4 The device is divided into the types of objects to be inspected.
a) line-package equipment;
b) cargo equipment;
c) Human body equipment.
5 General technical requirements
5.1 Overview
For combined equipment (eg transmission, backscatter combination), all technical requirements of the respective technology type should be met.
5.2 Radiation and environmental safety indicators
5.2.1 Single dose check
A single inspection dose of a device with only one X-ray generating device should be less than or equal to 5 μGy, and there are multiple X-ray generating devices.
A single check dose should be less than or equal to 10μGy, a device with multiple inspection channels, and a single dose of any one of the channels
Should meet the above requirements.
5.2.2 Peripheral dose equivalent rate
When the equipment is working normally, the enclosed equipment is at a distance of 0.1m from any accessible surface of the equipment (including the inlet and outlet of the equipment).
The volume equivalent rate should be less than or equal to 1μSv/h; open equipment needs to be delineated or placed in compliance with radiation protection requirements, outside the supervision area
The surrounding dose equivalent rate should be less than or equal to 2.5 μSv/h; the surrounding dose equivalent rate of the worker position should be less than or equal to 0.5 μSv/h.
5.2.3 Equipment noise
The equipment noise should be less than or equal to 65dB (A) at any point 1m away from the outer surface of the equipment during normal operation.
5.3 Operating environment
5.3.1 Working environment conditions
Ambient temperature range. 5 ° C ~ 40 ° C.
Relative humidity range. 5%~85%.
Atmospheric pressure range. 70kPa~106kPa.
5.3.2 Power Adaptability
The power supply voltage shall be within 10%-15% of the nominal voltage and the nominal frequency ±3Hz, and the equipment shall be able to operate normally.
5.4 Security performance
5.4.1 Equipment Safety
Requirements are as follows.
a) The equipment should have obvious system operation and ray emission display devices (indicators);
b) The equipment should be equipped with an emergency stop switch at a location accessible to the operator. If an emergency occurs, the equipment X can be cut off immediately.
The power supply of the radiation generating device and the conveying device; the emergency stop switch should use a red switch with a yellow bottom;
c) The equipment shall be equipped with a power overcurrent protection device of appropriate rating to prevent overuse of internal components or other accidents.
Current may cause a fire hazard;
d) The equipment shall be provided with a key switch and a secondary power start switch, and the key switch shall be able to clearly identify the "on" and "off" positions;
e) A safety protection interlock shall be fitted on the detachable radiation protection component of the X-ray emission area. Once the interlock is disconnected,
The power supply of the X-ray generating device of the device can be cut off immediately, and the X-ray should stop emitting immediately;
f) The equipment should have an operator identification function;
g) The equipment shall display the gray scale of the material uncertainty area and give obvious hints to the impervious area.
5.4.2 X-ray generating device safety
Requirements are as follows.
a) The X-ray generator shall be self-cooled within the equipment;
b) X-ray generators using external circulation cooling systems should have temperature or pressure control when the temperature of the coolant (oil or water) exceeds
When the specified value is exceeded or the circulating pressure is lower than the specified value, the X-ray emission can be automatically stopped;
c) The X-ray generating device shall have an overvoltage and overcurrent protection function, which can automatically be used when its voltage or current exceeds the specified value of the product.
Cutting off the high pressure;
d) The X-ray generating device shall have a protective grounding wire. The color of the grounding wire shall be yellow-green, and the grounding resistance shall not exceed 0.1 Ω.
5.5 Mechanical structure
5.5.1 Appearance section
Requirements are as follows.
a) The design and operation procedures of the equipment shall be in accordance with the basic requirements of ergonomics and shall be easy to operate and maintain;
b) The appearance of the equipment should be intact, the surface should be smooth and smooth, the color should be uniform, no obvious mechanical damage, no blistering damage to the coating, metal
The parts shall be free from rust and the plastic parts shall be free from blistering and cracking;
c) Mark and write on the panel clearly.
5.5.2 Mechanical part
Requirements are as follows.
a) The equipment consists of parts and all parts, and should have sufficient strength and rigidity. All adjustment and control mechanisms should be installed correctly and operated.
flexible;
b) The installation and disassembly of the outer cover should be convenient;
c) The frame shall have sufficient strength and rigidity to be free from deformation or damage during normal handling;
d) The equipment casters should have sufficient strength and rotational flexibility, and the connection with the equipment should be firm and reliable;
e) The degree of protection of the enclosure shall comply with the provisions of GB/T 4208-2017 and not less than the requirements of IP20.
5.6 Electromagnetic compatibility
5.6.1 Equipment Immunity
Electrostatic discharge, radio frequency electromagnetic field radiation, electrical fast transient bursts, surge (shock), and RF field induced conduction disturbances
And 6 voltage immunity tests for voltage sag, short interruption and voltage change. The immunity performance of equipment working in industrial environment should be consistent.
The requirements for the limits specified in Tables 1, 2 and 4 of GB/T 17799.2-2003. Equipment for working in residential, commercial and light industrial environments
The immunity performance shall comply with the requirements specified in Tables 1, 2 and 4 of GB/T 17799.1-2017.
5.6.2 Equipment launch
The radiated and conducted emission values of equipment operating in an industrial environment shall comply with the limits specified in Table 1 of GB/T 17799.4-2012.
The radiated and conducted emission values of equipment operating in residential, commercial and light industrial environments shall be in accordance with Table 1 of GB/T 17799.3-2012
The requirements for the specified limits.
5.7 Anti-shock
The equipment shall be protected against electric shock under normal conditions and single fault conditions, and the accessible parts of the equipment shall not be dangerously charged.
Meet the requirements of Chapter 6 of GB 4793.1-2007.
5.8 Anti-mechanical danger
Operation under normal conditions or under single fault conditions shall not cause mechanical hazards and comply with the requirements of Chapter 7 of GB 4793.1-2007.
5.9 Preventing the spread of flame
Under normal conditions or under single fault conditions, the flame shall not spread to the outside of the equipment, in accordance with Chapter 9 of GB 4793.1-2007.
Claim.
5.10 Temperature limits and heat resistance
The temperature limit and heat resistance of the equipment shall comply with the requirements of Chapter 10 of GB 4793.1-2007.
5.11 Environmental adaptability
5.11.1 Overview
The environmental adaptability of equipment and electrical components with independent functions meets the following requirements.
a) The equipment is a large-scale electromechanical product. When it is not suitable for environmental testing of the whole machine, it is allowed to press the electrical parts with independent functions separately.
5.11.2 and 5.11.5 shall be tested; the technical indicators of the whole machine or electrical component test shall meet the requirements of the equipment or components;
b) Electrical components with independent functions, after testing in 5.11.2 and 5.11.5, connect to the whole machine to test the whole machine, the equipment should be able to
normal work;
c) After climatic and mechanical environmental tests, equipment should not show signs of corrosion and mechanical damage.
5.11.2 Climate and environmental adaptability
See Table 1 for requirements.
Table 1 Climate environment adaptability
Test item severity grade test method
Machine
duration
Check item
Independent electrical components
duration
Check item
Low temperature 0 °C ± 3 ° C
Test Ab by GB/T 2423.1-2008
Conduct, test the power of the project
High temperature 45 °C ± 2 ° C
Test Bb according to GB/T 2423.2-2008
Carry out, the whole process is energized
Constant damp heat
40 ° C ± 2 ° C
Relative humidity.
93 2-3%
(no condensation)
Test Cab according to GB/T 2423.3-2016
Conduct, test the power of the project
Before the start of the test
Initial test
And each test
Inspection before the end
Check items and parties
Device by device
Quasi-regulation
Before the start of the test
Initial test and each
Before the end of the trial
Check items and
Method by product
Quasi-regulation
Low temperature storage -40 °C ± 3 ° C
Test Ab by GB/T 2423.1-2008
Carry out, no power during the test
After the test is over
Less recovery after 4h
Inspection, check item
Project and method
Standard requirements
After the test is over
Less recovery after 4h
Test, test items and
Method by product
Quasi-regulation
5.11.3 Resistance to mechanical shock and impact
The mechanical shock resistance and impact of the equipment shall comply with the requirements of Chapter 8 of G...
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