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GB/T 20129-2015: Electron linac for non-destructive testing
Status: Valid GB/T 20129: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20129-2015 | English | 399 |
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Electron linac for non-destructive testing
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GB/T 20129-2015
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| GB/T 20129-2006 | English | 599 |
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Electron linac for non-destructive testing
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GB/T 20129-2006
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PDF similar to GB/T 20129-2015
Basic data | Standard ID | GB/T 20129-2015 (GB/T20129-2015) | | Description (Translated English) | Electron linac for non-destructive testing | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F86 | | Classification of International Standard | 19.100 | | Word Count Estimation | 19,188 | | Date of Issue | 2015-10-09 | | Date of Implementation | 2016-05-01 | | Older Standard (superseded by this standard) | GB/T 20129-2006 | | Quoted Standard | GB/T 191; GB/T 9969; GB/T 10257; GB/T 12464; GB/T 14436; GB/T 17045; GB 18871; GB/T 19661.1; GB/T 30371; JB/T 7902 | | Regulation (derived from) | National Standard Announcement 2015 No.31 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the designation, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and accompanying documents of the electronic linear accelerator for non-destructive testing. This standard applies to the energy of 1MeV ~ 15MeV non-destructive testing with electronic linear accelerator, including as X-ray photography or imaging, industrial computer tomography examination of radiation sources such as electronic linear accelerator. | GB/T 20129-2015: Electron linac for non-destructive testing---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.
Electron linac for non-destructive testing
ICS 19.100
F86
National Standards of People's Republic of China
Replacing GB/T 20129-2006
NDT electron linear accelerator with
Issued on. 2015-10-09
2016-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
Introduction Ⅱ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 accelerator, model name, working conditions and the detection range 2
5 Technical requirements 3
6 Test methods 6
7 Inspection rules 12
8 signs, packaging, transportation, storage and accompanying documents 13
Relations with the half-value layer of X-ray beam energy in Appendix A (informative) curve 15 different materials
1 accelerator model name 3
Figure 2 X-ray beam radial uniformity measurement schematic 8
Figure 3 a schematic view of the test module and measure 9
Figure 4 schematic placement test module 9
Figure 5 leak schematic dose measurement point 11
Figure A.1 density of steel 7.85 × 103kg/m3 of the relationship between the half-value layer of X-ray beam energy of 15
Figure A.2 a density of 1.70 × 103kg/m3 and the relationship between the half-value layer of X-ray beam energy solid propellant 15
Table 1 common specifications of different models accelerator 3
Table 2 Common X-ray beam energy corresponding to the half-value layer of material 4
Radial uniformity of X-ray beam used in Table 3 X-ray beam energy corresponding to 4
Table 4 Commonly used X-ray beam energy corresponding to the air kerma rate 5
Table 5 Common X-ray beam energy corresponding to the detected equivalent steel thickness range of 5
Table 6 Test conditions 7
Table 7 Accelerator Test Item 12
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 20129-2006 "Nondestructive electron linear accelerator detection", compared with the GB/T 20129-2006, the main
Technical changes are as follows.
--- By the scope of the following 2MeV ~ 9MeV extended to 1MeV ~ 15MeV (see Chapter 1, Chapter 1, 2006 edition);
--- Terms and definitions replace "electron linear accelerator," "non-destructive testing using electron linear accelerator" (see 3.1,2006 Version 3.1);
--- Modify the terms and definitions.
● "X-ray beam radial uniformity" (see 3.6,2006 Version 3.6);
● "X-ray beam focus size" (see 3.7,2006 Version 3.5);
--- Adding new terms and definitions.
● "X-ray beam air kerma rate" (see 3.4);
● "X-ray beam radial asymmetry" (see 3.8);
● "X-ray beam photographic sensitivity" (see 3.9);
--- Redefined the model naming rules (see 4.2,2006 Version 4.2);
--- Revised "ambient temperature" range (see 4.3,2006 Version 4.3);
--- Increased common X-ray beam energy corresponding to the half-value layer of material (see Table 2);
--- Increasing the X-ray beam energy is higher than 9MeV 1MeV and radial uniformity requirements (see Table 3);
--- Increasing the X-ray beam energy and 1MeV 9MeV higher than the corresponding air kerma rate (see Table 4);
--- Increasing the X-ray beam energy when 1MeV and higher than the corresponding detection 9MeV equivalent steel thickness range (see Table 5);
--- Increasing the X-ray beam energy range above 9MeV X-ray beam focus size requirements (see 5.3.4);
--- Remove the radiation safety requirements and testing (2006 Version 5.5);
--- Adjustment "reliability" to "stable operation" statements and revised presentation and content parameters (see 5.5,2006 Version 5.6);
--- Increased content "test apparatus and equipment" (see 6.1.2);
--- Fixed test method X-ray beam air kerma rate (see 6.4.3,2006 version 6.4.2);
--- Developed a new "X-ray beam radial asymmetry" test method (see 6.4.5);
--- Increasing the X-ray beam image detector sensitivity performance indicators (see 5.3.6) and the test methods (see 6.4.6);
--- Clear testing methods of X-ray leakage amount (see 6.4.7,2006 version 6.4.6);
--- Increase the test items "X-ray beam photographic sensitivity" (see Table 7);
--- Increasing the curve of different half-value layer of sheet material with the X-ray beam energy (see Appendix A Informative).
The standard proposed by China National Nuclear Corporation.
This standard by the National Nuclear Instrument Standardization Technical Committee (SAC/TC30) centralized.
This standard was drafted. China Institute of Atomic Energy.
The main drafters of this standard. once self-reliance, Yu Guolong, Tong Xun, Wang Shuxian, Zhang Lifeng, Yang Su, Wang Nan Lu satellites.
This standard replaces the standards previously issued as follows.
--- GB/T 20129-2006.
Introduction
NDT is an electron linear accelerator generates X-ray equipment, which produces radiation having a high energy and penetrating power, air
Kerma rate for large and small focus than other characteristics, can be used as X-ray photography or imaging, industrial computer tomography and other radiation sources, it is
Large structures, pressure vessels and other important equipment for non-destructive testing (NDT), such as weld inspection of pressure vessels, large castings folder
Miscellaneous, porosity, internal product defects.
NDT electron linear accelerator with
1 Scope
This standard specifies the NDT electron linear accelerator model name, technical requirements, test methods, inspection rules, marking, packaging,
Transport, storage and accompanying documents.
This standard applies to energy for the non-destructive testing 1MeV ~ 15MeV electron linear accelerator, including an X-ray photography or in
Like, industrial computer tomography and other sources of radiation electron linear accelerator.
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 191 Packaging - Pictorial signs
GB/T 9969 General Instructions industrial products
GB/T 10257 nuclear instruments and nuclear radiation detectors Quality inspection rule
GB/T 12464 ordinary wooden box
GB/T 14436 General industrial products assurance documents
GB/T 17045 Universal Protection against electric shock devices and equipment
GB 18871 ionizing radiation protection and safety of radiation sources basic standards
GB/T 19661.1 nuclear equipment and systems - Safety requirements - Part 1. General requirements
GB/T 30371 NDT electron linear accelerator project general specification
JB/T 7902 NDT radiographic testing linear IQI
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Microwave electromagnetic field by an electron beam along a linear track accelerated to higher energies, and hit the heavy metal target to generate X-ray non-destructive inspection
Measured accelerator.
Note. NDT electron linear accelerator, hereinafter referred to as an accelerator.
3.2
X-ray irradiation field X-rayfield
X-rays from the target through the collimator effective radiation in a predetermined range of X-ray beam generated at a distance.
3.3
X-ray beam energy X-raybeamenergy
Having a continuous spectrum of the X-ray beam maximum energy.
Note. X-ray beam energy is expressed in MeV.
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