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GB/T 3323.1-2019   Non-destructive testing of welds—Radiographic testing—Part 1:X-and gamma-ray techniques with film (English Version)
Standard No.: GB/T 3323.1-2019 Status:valid remind me the status change

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Word Count: 14500 words Price(USD):250.0 remind me the price change

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Standard No.: GB/T 3323.1-2019
English Name: Non-destructive testing of welds—Radiographic testing—Part 1:X-and gamma-ray techniques with film
Chinese Name: 焊缝无损检测 射线检测 第1部分:X和伽玛射线的胶片技术
Chinese Classification: J33    Welding and cutting
Professional Classification: GB    National Standard
ICS Classification: 25.160.40 25.160.40    Welded joints and welds 25.160.40
Issued by: SAMR; SAC
Issued on: 2019-08-30
Implemented on: 2020-3-1
Status: valid
Superseding:GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials
Language: English
File Format: PDF
Word Count: 14500 words
Price(USD): 250.0
Delivery: via email in 1 business day
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. GB/T 3323 consists of the following parts, under the general title Non-destructive testing of welds - Radiographic testing: Part 1: Part 1: X- and gamma-ray techniques with film; Part 2: X- and gamma-ray techniques with digital detectors. This is Part 1 of GB/T 3323. This part is developed in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials and the following main technical changes have been made with respect to GB/T 3323-2005: ——The scope is modified (see Clause 1; Clause 1 of Edition 2005); ——The normative references are modified (see Clause 2; Clause 2 of Edition 2005); ——Some terms, definitions and symbols are modified (see Clause 3; Clause 3 of Edition 2005); ——Symbols and abbreviations are added (see Clause 4); ——Requirements for the minimum image quality are modified (see 6.9; 5.9 of Edition 2005); ——The personnel qualification is modified (see 6.10; 5.10 of Edition 2005); ——The saddle fillet weld is changed to set-on tube socket weld (see Figures 4, 7 and 10; Figures 4, 7 and 10 of Edition 2005); ——The X-ray machine with tube voltage below 1,000kV is modified (see 7.2.1; 6.2.1 of Edition 2005); ——Appendix A is modified, the wire-type IQI is changed to wire IQI and the value of IQI is changed to image quality value; ——Appendix D to Appendix E of Edition 2005 are deleted. This part has been redrafted and modified adoption of ISO 17636-1: 2013 Non-destructive testing of welds - Radiographic testing - Part 1: X- and gamma-ray techniques with film. Compared with ISO 17636-1:2013, the structure of this part is slightly adjusted, i.e., 6.9 is adjusted to 6.7, and others are postponed; the order of Appendix A and Appendix B is adjusted. The main technical differences of this part from ISO 17636-1:2013 and their justifications are as follows: ——The adjustment in "Normative References" of this part has technical differences to meet the technical specification in China; the adjustment situations are embodied in a concentrated way in Clause 2 - "Normative references" and the specific adjustments are as follows: ● GB/T 19943 identical to the international standard ISO 5579 is added and for reference (see Clause 1); ● GB/T 12604.2 identical to the international standard is used to replace ISO 5576 (see Clause 3); ● GB/T 23901.1 identical to the international standard is used to replace ISO 19232-1 (see 6.8); ● GB/T 23901.2 identical to the international standard is used to replace ISO 19232-2 (see 6.8); ● GB/T 23901.4 identical to the international standard is used to replace ISO 19232-4 (see 6.7); ● GB/T 19802 identical to the international standard is used to replace ISO 5580 (see 6.9, 7.8 and 7.10); ● GB/T 9445 identical to the international standard is used to replace ISO 9712 (see 6.10); ● GB/T 19348.1 which is modified in relation to the international standard is used to replace ISO 11699-1 (see 7.3, Table 3 and Table 4); ● GB/T 25758 (all parts) identical to the international standard is used to replace EN 12543.1~EN 12543.5 (see 7.6); ● GB/T 19348.2 identical to the international standard is used to replace ISO 11699-2 (see 7.9). The following editorial changes have also been made in this part: ——ISO 5579 and ISO 19232-3 in “Bibliography” are deleted. This part was proposed by and is under the jurisdiction of the National Technical Committee on Welding of Standardization Administration of China (SAC/TC 55). The previous editions of this part are as follows: ——GB/T 3323-1982, GB/T 3323-1987 and GB/T 3323-2005. Non-destructive Testing of Welds - Radiographic Testing - Part 1: X- and Gamma-ray Techniques with Film 焊缝无损检测 射线检测 第1部分:X和伽玛射线的胶片技术 1 Scope This part of GB/T 3323 specifies techniques of radiographic examination of fusion welded joints of metallic materials. This part is applicable to the radiographic examination of welded joints of plates and pipes or other welded joints. This part does not specify acceptance levels for radiographic examination of welded joints of metallic materials. If contracting parties apply lower test criteria, it is possible that the quality of tested image is declined significantly. Note: This part meets the requirements of GB/T 19943, and the detector used is film. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 9445 Non-destructive testing - Qualification and certification of NDT personnel (GB/T 9445-2015, ISO 9712:2012, IDT) GB/T 12604.2 Non-destructive testing - Terminology - Terms used in radiographic testing (GB/T 12604.2-2005, ISO 5576:1997, IDT) GB/T 19348.1 Non-destructive testing - Industrial radiographic film - Part 1: Classification of film systems for industrial radiography (GB/T 19348.1-2014, ISO 11699-1:2008, MOD) GB/T 19348.2 Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing by means of reference values (GB/T 19348.2-2003, ISO 11699-2:1998, IDT) GB/T 19802 Non-destructive testing - Industrial radiographic illuminators - Minimum requirements (GB/T 19802-2005, ISO 5580:1985, IDT) GB/T 19943 Non-destructive test - Radiographic examination of metallic materials by X- and gamma-rays - Basic rules (GB/T 19943-2005, ISO 5579:1998, IDT) GB/T 23901.1 Non-destructive testing - Image quality of radiographs - Part 1: Determination of the image quality value using wire-type image quality indicators (GB/T 23901.1-2019, ISO 19232-1:2013, IDT) GB/T 23901.2 Non-destructive testing - Image quality of radiographs - Part 2: Determination of the image quality value using step/hole-type image quality indicators (GB/T 23901.2-2019, ISO 19232-2:2013, 1DT) GB/T 23901.4 Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables (GB/T 23901.4-2019, ISO 19232-4:2013, IDT) GB/T 25758 (All parts) Non-destructive testing - Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing EN 12679 Non-destructive testing - Radiographic testing - Determination of the size of industrial radiographic gamma sources 3 Terms and Definitions For the purposes of this document, the terms and definitions given in GB/T 12604.2 and the followings apply. 3.1 Nominal thickness t Nominal thickness of the parent material only where manufacturing tolerances do not have to be taken into account 3.2 Penetrated thickness w Thickness of material in the direction of the radiation beam calculated on the basis of the nominal thicknesses of materials 3.3 Penetration thickness change Change of the actual penetrated thickness relative to the nominal thickness due to beam angle 3.4 Object-to-film distance b Distance between the surface of the tested object at the side of radiation source and the film measured along the central axis of the radiation beam 3.5 Source size d Size of the radiation source or focal spot size 3.6 Source-to-object distance f Distance between the radiation source (or focus) and the tested object at the side of radiation source measured along the central axis of the radiation beam 3.7 Source-to-film distance SFD Distance between the radiation source (or focus) and the film measured in the direction of the radiation beam 3.8 External diameter De Nominal external diameter of the pipe 4 Symbols and Abbreviations For the purposes of this document, the symbols and abbreviations given in Table 1 apply. Table 1 Symbols and abbreviations b object-to-film distance b’ object-to-film distance perpendicular to test object De external diameter d source size F film f source-to-object distance f ' source-to-object distance perpendicular to test object fmin minimum source-to-object distance IQI image quality indicator S radiation source SFD source-to-film distance t nominal thickness penetration thickness change w penetrated thickness 5 Classification of Radiographic Testing Techniques Radiographic testing techniques are divided into two classes: ——Class A: basic techniques; ——Class B: improved techniques. Class B techniques are used when the sensitivity of class A techniques cannot meet the requirements. Better techniques compared to class B are possible and may be agreed between the contracting parties by specification of all appropriate testing parameters. The choice of radiographic testing technique shall be agreed between the contracting parties. If, for technical or structural reasons, it cannot meet the radiography conditions of class B techniques, such as the type of radiation source and source-to-object distance, upon the agreement of contracting parties, the radiography conditions specified in class A techniques can be selected. In such case, the loss of sensitivity shall be compensated by increasing the minimum intensity of negative film to 3.0 or selecting a better film system with minimum intensity of 2.6. The other conditions for class B shall remain unchanged, especially the image quality achieved (see Tables A.1 to A.12 in Appendix A). Since the sensitivity after compensation is better than that of class A techniques, it may be considered that the object is radiographed according to class B techniques. For the radiographic arrangements in 7.1.4 and 7.1.5, if the source-to-film distance is reduced according to 7.6, it is not necessary to compensate the sensitivity according to the above method. 6 General 6.1 Radiological safety protection Without proper protective measures, X-rays or gamma rays will be highly injurious to health. The use of X-ray equipment or radioactive sources shall meet the requirements of regulations for radiological protection. When carrying out radiographic testing, the safety protection measures stipulated in relevant laws and regulations shall be strictly applied. 6.2 Timing of surface preparation and testing In general, surface preparation of the object is not necessary, but when surface imperfections or coatings affect the detection of defects, the surface of the object shall be ground smooth or the coating shall be removed. Unless otherwise specified, radiographic testing shall be carried out after completion of manufacturing, such as after grinding or heat treatment. 6.3 Location of the weld in the negative film When the weld boundary cannot be clearly displayed on the negative film, location markings made of high density materials shall be placed on either side of the weld. 6.4 Identification of negative film For each section of the object being radiographed, identification markings composed of letters, numbers and symbols shall be placed, such as product number, weld number, repair marking and radiography date, to characterize the object and position of the tested image. Marked images shall be located outside the effective area of interest and ensure that each section is clearly marked.
Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Symbols and Abbreviations 5 Classification of Radiographic Testing Techniques 6 General 7 Recommended Radiographic Testing Techniques 8 Testing report Annex A (Normative) Minimum Image Quality Value Annex B (Normative) Recommended Number Of Exposures for 100% Radiographic Testing of a Circumferential Butt Weld
Referred in GB/T 3323.1-2019:
*GB/T 9445-2015 Non-destructive testing―Qualification and certification of NDT personnel
*GB/T 12604.2-2005 Non-destructive testing - Terminology - Terms used in radiographic testing
*GB/T 19348.1-2014 Non-destructive testing―Industrial radiographic film―Part 1: Classification of film systems for industrial radiography
*GB/T 19348.2-2003 Non - Destructive testing - Industrial radiographic films - Part 2: Control of film processingby means of reference values
*GB/T 19802-2005 Non-destructive testing--Industrial radiographic illuminators--Minimum requirements
*GB/T 19943-2005 Non-destructive test - Radiographic examination of metallic materials by X-and gamma-rays - Basic rules
*GB/T 23901.1-2019 Non-destructive testing—Image quality of radiographs—Part 1:Determination of the image quality value using wire-type image quality indicators
*GB/T 23901.2-2019 Non-destructive testing—Image quality of radiographs—Part 2:Determination of the image quality value using step/hole-type image quality indicators
*GB/T 23901.4-2019 Non-destructive testing—Image quality of radiographs—Part 4: Experimental evaluation of image quality values and image quality tables
*GBT25758-
*GB/T 35590-2017 Information technology―General specification for portable digital equipments used power bank
*QB/T 1858-2004 Perfume and cologne
*HG/T 20592-2009 Stee1 Pipe F1anges (PN designated)
*GB 3565-2005 Safety requirements for bicycles
*GB/T 39335-2020 Information security technology—Guidance for personal information security impact assessment
*GA 374-2019 Burglary-resistant electronic locks
*GB/T 19001-2016 Quality management systems―Requirements
*GB 4943.1-2022 Audio/video,information and communication technology equipment—Part 1: Safety requirements
*GB 4806.7-2016 National Food Safety Standard - Food Contact Plastic Materials and Articles
*GB/T 35590-2017 Information technology―General specification for portable digital equipments used power bank
*GB 150-2011 Pressure Vessels (Collection GB150.1~150.4-2011)
*GB/T 5750-2006 Standard examination methods for drinking water
*JB/T 10391-2008 Specification for Yseries(IP44)three asynchronous motor (Frame size 80~355)
*GB 14880-2012 National Food Safety Standard for the Use of Nutritional Fortification Substances in Foods
*GB 9706.1-2020 Medical electrical equipment—Part 1: General requirements for basic safety and essential performance
GB/T 3323.1-2019 is referred in:
*GB/T 37910.1-2019 Non-destructive testing of welds—Acceptance levels for radiographic testing—Part 1:Steel,nickel, titanium and their alloys
*GB 50205-2020 Standard for acceptance of construction quality of steel structures
*GB/T 41110-2021 Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of nickel and nickel alloys
*GB/T 41984-2022 Procedure method for arc stud welding
*GB/T 41979.3-2022 Friction stir spot welding—Aluminium and its alloys—Part 3:Qualification of welding operators
*GB/T 41979.5-2022 Friction stir spot welding—Aluminium and its alloys—Part 5:Quality and inspection requirements
*GB/T 8110-2020 Wire electrodes and weld deposits for gas shielded metal arc welding of non alloy and fine grain steels
*GB/T 15468-2020 Fundamental technical requirements for hydraulic turbines
Code of China
Standard
GB/T 3323.1-2019  Non-destructive testing of welds—Radiographic testing—Part 1:X-and gamma-ray techniques with film (English Version)
Standard No.GB/T 3323.1-2019
Statusvalid
LanguageEnglish
File FormatPDF
Word Count14500 words
Price(USD)250.0
Implemented on2020-3-1
Deliveryvia email in 1 business day
Detail of GB/T 3323.1-2019
Standard No.
GB/T 3323.1-2019
English Name
Non-destructive testing of welds—Radiographic testing—Part 1:X-and gamma-ray techniques with film
Chinese Name
焊缝无损检测 射线检测 第1部分:X和伽玛射线的胶片技术
Chinese Classification
J33
Professional Classification
GB
ICS Classification
Issued by
SAMR; SAC
Issued on
2019-08-30
Implemented on
2020-3-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials
Language
English
File Format
PDF
Word Count
14500 words
Price(USD)
250.0
Keywords
GB/T 3323.1-2019, GB 3323.1-2019, GBT 3323.1-2019, GB/T3323.1-2019, GB/T 3323.1, GB/T3323.1, GB3323.1-2019, GB 3323.1, GB3323.1, GBT3323.1-2019, GBT 3323.1, GBT3323.1
Introduction of GB/T 3323.1-2019
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. GB/T 3323 consists of the following parts, under the general title Non-destructive testing of welds - Radiographic testing: Part 1: Part 1: X- and gamma-ray techniques with film; Part 2: X- and gamma-ray techniques with digital detectors. This is Part 1 of GB/T 3323. This part is developed in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials and the following main technical changes have been made with respect to GB/T 3323-2005: ——The scope is modified (see Clause 1; Clause 1 of Edition 2005); ——The normative references are modified (see Clause 2; Clause 2 of Edition 2005); ——Some terms, definitions and symbols are modified (see Clause 3; Clause 3 of Edition 2005); ——Symbols and abbreviations are added (see Clause 4); ——Requirements for the minimum image quality are modified (see 6.9; 5.9 of Edition 2005); ——The personnel qualification is modified (see 6.10; 5.10 of Edition 2005); ——The saddle fillet weld is changed to set-on tube socket weld (see Figures 4, 7 and 10; Figures 4, 7 and 10 of Edition 2005); ——The X-ray machine with tube voltage below 1,000kV is modified (see 7.2.1; 6.2.1 of Edition 2005); ——Appendix A is modified, the wire-type IQI is changed to wire IQI and the value of IQI is changed to image quality value; ——Appendix D to Appendix E of Edition 2005 are deleted. This part has been redrafted and modified adoption of ISO 17636-1: 2013 Non-destructive testing of welds - Radiographic testing - Part 1: X- and gamma-ray techniques with film. Compared with ISO 17636-1:2013, the structure of this part is slightly adjusted, i.e., 6.9 is adjusted to 6.7, and others are postponed; the order of Appendix A and Appendix B is adjusted. The main technical differences of this part from ISO 17636-1:2013 and their justifications are as follows: ——The adjustment in "Normative References" of this part has technical differences to meet the technical specification in China; the adjustment situations are embodied in a concentrated way in Clause 2 - "Normative references" and the specific adjustments are as follows: ● GB/T 19943 identical to the international standard ISO 5579 is added and for reference (see Clause 1); ● GB/T 12604.2 identical to the international standard is used to replace ISO 5576 (see Clause 3); ● GB/T 23901.1 identical to the international standard is used to replace ISO 19232-1 (see 6.8); ● GB/T 23901.2 identical to the international standard is used to replace ISO 19232-2 (see 6.8); ● GB/T 23901.4 identical to the international standard is used to replace ISO 19232-4 (see 6.7); ● GB/T 19802 identical to the international standard is used to replace ISO 5580 (see 6.9, 7.8 and 7.10); ● GB/T 9445 identical to the international standard is used to replace ISO 9712 (see 6.10); ● GB/T 19348.1 which is modified in relation to the international standard is used to replace ISO 11699-1 (see 7.3, Table 3 and Table 4); ● GB/T 25758 (all parts) identical to the international standard is used to replace EN 12543.1~EN 12543.5 (see 7.6); ● GB/T 19348.2 identical to the international standard is used to replace ISO 11699-2 (see 7.9). The following editorial changes have also been made in this part: ——ISO 5579 and ISO 19232-3 in “Bibliography” are deleted. This part was proposed by and is under the jurisdiction of the National Technical Committee on Welding of Standardization Administration of China (SAC/TC 55). The previous editions of this part are as follows: ——GB/T 3323-1982, GB/T 3323-1987 and GB/T 3323-2005. Non-destructive Testing of Welds - Radiographic Testing - Part 1: X- and Gamma-ray Techniques with Film 焊缝无损检测 射线检测 第1部分:X和伽玛射线的胶片技术 1 Scope This part of GB/T 3323 specifies techniques of radiographic examination of fusion welded joints of metallic materials. This part is applicable to the radiographic examination of welded joints of plates and pipes or other welded joints. This part does not specify acceptance levels for radiographic examination of welded joints of metallic materials. If contracting parties apply lower test criteria, it is possible that the quality of tested image is declined significantly. Note: This part meets the requirements of GB/T 19943, and the detector used is film. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 9445 Non-destructive testing - Qualification and certification of NDT personnel (GB/T 9445-2015, ISO 9712:2012, IDT) GB/T 12604.2 Non-destructive testing - Terminology - Terms used in radiographic testing (GB/T 12604.2-2005, ISO 5576:1997, IDT) GB/T 19348.1 Non-destructive testing - Industrial radiographic film - Part 1: Classification of film systems for industrial radiography (GB/T 19348.1-2014, ISO 11699-1:2008, MOD) GB/T 19348.2 Non-destructive testing - Industrial radiographic films - Part 2: Control of film processing by means of reference values (GB/T 19348.2-2003, ISO 11699-2:1998, IDT) GB/T 19802 Non-destructive testing - Industrial radiographic illuminators - Minimum requirements (GB/T 19802-2005, ISO 5580:1985, IDT) GB/T 19943 Non-destructive test - Radiographic examination of metallic materials by X- and gamma-rays - Basic rules (GB/T 19943-2005, ISO 5579:1998, IDT) GB/T 23901.1 Non-destructive testing - Image quality of radiographs - Part 1: Determination of the image quality value using wire-type image quality indicators (GB/T 23901.1-2019, ISO 19232-1:2013, IDT) GB/T 23901.2 Non-destructive testing - Image quality of radiographs - Part 2: Determination of the image quality value using step/hole-type image quality indicators (GB/T 23901.2-2019, ISO 19232-2:2013, 1DT) GB/T 23901.4 Non-destructive testing - Image quality of radiographs - Part 4: Experimental evaluation of image quality values and image quality tables (GB/T 23901.4-2019, ISO 19232-4:2013, IDT) GB/T 25758 (All parts) Non-destructive testing - Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing EN 12679 Non-destructive testing - Radiographic testing - Determination of the size of industrial radiographic gamma sources 3 Terms and Definitions For the purposes of this document, the terms and definitions given in GB/T 12604.2 and the followings apply. 3.1 Nominal thickness t Nominal thickness of the parent material only where manufacturing tolerances do not have to be taken into account 3.2 Penetrated thickness w Thickness of material in the direction of the radiation beam calculated on the basis of the nominal thicknesses of materials 3.3 Penetration thickness change Change of the actual penetrated thickness relative to the nominal thickness due to beam angle 3.4 Object-to-film distance b Distance between the surface of the tested object at the side of radiation source and the film measured along the central axis of the radiation beam 3.5 Source size d Size of the radiation source or focal spot size 3.6 Source-to-object distance f Distance between the radiation source (or focus) and the tested object at the side of radiation source measured along the central axis of the radiation beam 3.7 Source-to-film distance SFD Distance between the radiation source (or focus) and the film measured in the direction of the radiation beam 3.8 External diameter De Nominal external diameter of the pipe 4 Symbols and Abbreviations For the purposes of this document, the symbols and abbreviations given in Table 1 apply. Table 1 Symbols and abbreviations b object-to-film distance b’ object-to-film distance perpendicular to test object De external diameter d source size F film f source-to-object distance f ' source-to-object distance perpendicular to test object fmin minimum source-to-object distance IQI image quality indicator S radiation source SFD source-to-film distance t nominal thickness penetration thickness change w penetrated thickness 5 Classification of Radiographic Testing Techniques Radiographic testing techniques are divided into two classes: ——Class A: basic techniques; ——Class B: improved techniques. Class B techniques are used when the sensitivity of class A techniques cannot meet the requirements. Better techniques compared to class B are possible and may be agreed between the contracting parties by specification of all appropriate testing parameters. The choice of radiographic testing technique shall be agreed between the contracting parties. If, for technical or structural reasons, it cannot meet the radiography conditions of class B techniques, such as the type of radiation source and source-to-object distance, upon the agreement of contracting parties, the radiography conditions specified in class A techniques can be selected. In such case, the loss of sensitivity shall be compensated by increasing the minimum intensity of negative film to 3.0 or selecting a better film system with minimum intensity of 2.6. The other conditions for class B shall remain unchanged, especially the image quality achieved (see Tables A.1 to A.12 in Appendix A). Since the sensitivity after compensation is better than that of class A techniques, it may be considered that the object is radiographed according to class B techniques. For the radiographic arrangements in 7.1.4 and 7.1.5, if the source-to-film distance is reduced according to 7.6, it is not necessary to compensate the sensitivity according to the above method. 6 General 6.1 Radiological safety protection Without proper protective measures, X-rays or gamma rays will be highly injurious to health. The use of X-ray equipment or radioactive sources shall meet the requirements of regulations for radiological protection. When carrying out radiographic testing, the safety protection measures stipulated in relevant laws and regulations shall be strictly applied. 6.2 Timing of surface preparation and testing In general, surface preparation of the object is not necessary, but when surface imperfections or coatings affect the detection of defects, the surface of the object shall be ground smooth or the coating shall be removed. Unless otherwise specified, radiographic testing shall be carried out after completion of manufacturing, such as after grinding or heat treatment. 6.3 Location of the weld in the negative film When the weld boundary cannot be clearly displayed on the negative film, location markings made of high density materials shall be placed on either side of the weld. 6.4 Identification of negative film For each section of the object being radiographed, identification markings composed of letters, numbers and symbols shall be placed, such as product number, weld number, repair marking and radiography date, to characterize the object and position of the tested image. Marked images shall be located outside the effective area of interest and ensure that each section is clearly marked.
Contents of GB/T 3323.1-2019
Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Symbols and Abbreviations 5 Classification of Radiographic Testing Techniques 6 General 7 Recommended Radiographic Testing Techniques 8 Testing report Annex A (Normative) Minimum Image Quality Value Annex B (Normative) Recommended Number Of Exposures for 100% Radiographic Testing of a Circumferential Butt Weld
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Keywords:
GB/T 3323.1-2019, GB 3323.1-2019, GBT 3323.1-2019, GB/T3323.1-2019, GB/T 3323.1, GB/T3323.1, GB3323.1-2019, GB 3323.1, GB3323.1, GBT3323.1-2019, GBT 3323.1, GBT3323.1