GB/T 23901.3-2019 English PDF (GBT23901.3-2019)

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GB/T 23901.3-2019: Non-destructive testing -- Image quality of radiographs -- Part 3: Image quality classes
GB/T 23901.3-2019
Non-destructive testing--Image quality of radiographs--Part 3. Image quality classes
ICS 19.100
J04
National Standards of People's Republic of China
Replace GB/T 23901.3-2009
Non-destructive testing radiographic inspection image quality
Part 3. Image quality classification
Part 3. Imagequalityclasses
(ISO 19232-3.2013, IDT)
Published on.2019-06-04
2020-01-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 range 1
2 Normative references 1
3 Terms and Definitions 1
4 image quality level 2
5 placement of the image quality 2
6 Determination of image quality 2
7 image quality value of gamma radiography detection 2
8 Single-wall transillumination technology (source side A-level image quality) 3
9 Single-wall transillumination technology (source side B-level image quality) 4
10 double wall double shadow transillumination technology (source side A level image quality) 5
11 double wall double shadow transillumination technology (source side B quality) 6
12 double wall double shadow or double wall single shadow transillumination technology (detector side A level image quality) 7
13 double wall double shadow or double wall single shadow transillumination technology (detector side B quality) 8
Foreword
GB/T 23901 "Non-destructive testing radiographic inspection image quality" is divided into five parts.
---Part 1. Determination of the image quality of the silk-type image quality meter;
--- Part 2. Determination of image quality values of stepped hole image quality meters;
--- Part 3. Image quality classification;
--- Part 4. Experimental evaluation of image quality and image quality table;
--- Part 5. Determination of image clarity of double-filament image quality.
This part is the third part of GB/T 23901.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 23901.3-2009 "Non-destructive testing of radiographic film quality - Part 3. s.
Class, compared with GB/T 23901.3-2009, the main changes are as follows.
--- Removed the restriction on "black metal" in the range, and changed "black metal image quality classification" to "image quality classification";
--- Revised the normative reference document (see Chapter 2, Chapter 2 of the.2009 edition);
---Modified terms and definitions (see Chapter 3, Chapter 3 of the.2009 edition);
--- Updated the image quality value determination method when using Ir192 and Se75, and the image quality value of gamma radiography detection (see Chapter 7,
Table 1~Table 4 of the.2009 edition;
--- Removed the footnotes from Table 1 to Table 12 (see Tables 1 to 12 of the.2009 edition);
---" Radiographic film quality" was changed to "radiography to detect image quality";
--- "Image quality index" was changed to "image quality value";
--- "film" changed to "detector";
--- "Linear image quality meter", changed to "silk image quality meter".
This section uses the translation method equivalent to ISO 19232-3.2013 "Non-destructive testing radiographic inspection image quality Part 3. Image
Quality classification.
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
---GB/T 19802-2005 Minimum requirements for non-destructive testing of industrial radiographic viewing lamps (ISO 5580.1985, IDT)
---GB/T 19943-2005 Non-destructive testing of metal materials X and gamma radiography detection basic rules (ISO 5579.
1998, IDT)
--- GB/T 23901.1-2019 Non-destructive testing - Radiographic image quality - Part 1 . s
Determination (ISO 19232-1.2013, IDT)
--- GB/T 23901.2-2019 Non-destructive testing - Radiographic image quality - Part 2. Stepped hole image quality image quality
Determination of values (ISO 19232-2.2013, IDT)
This part is proposed and managed by the National Non-Destructive Testing Standardization Technical Committee (SAC/TC56).
This section drafted by. Shanghai Space Propulsion Research Institute, Shanghai Aerospace Power Technology Engineering Co., Ltd., Shanghai Materials Research Institute, Zhejiang Province
Jinyun Image Quality Factory, Hubei Sanjiang Aerospace Jiangbei Machinery Engineering Co., Ltd., Matrix Science and Technology Testing Technology (Beijing) Co., Ltd., China Guangdong Nuclear Power Engineering Co., Ltd.
Co., Ltd., Shanghai Aerospace Equipment Manufacturing Co., Ltd., Sichuan Aerospace Chuanan Fire Technology Co., Ltd., Shanghai Aerospace Precision Machinery Research
Institute, Shanghai Satellite Equipment Research Institute, Shanghai Feitian Zhongzhi Technology Co., Ltd., Zhejiang Special Equipment Inspection and Research Institute, Aerospace Materials and Process Research
Research Institute, CITIC Daika Co., Ltd., Institute of Acoustics, Chinese Academy of Sciences, Donghai Research Station, Ningbo Special Equipment Inspection and Research Institute, Shanghai Airlines
Tiantian Control Technology Research Institute, Aintik Testing Technology (Shanghai) Co., Ltd.
The main drafters of this section. Chen Yiwei, Xu Guozhen, Jiang Jiansheng, Ding Jie, Liu Zhanglong, Wang Xiaoyong, Jiang Yunxi, Zhu Congbin, Xu Wei, Zhang Zheng,
Zhou Jianping, Wei Wei, Sun Jianwei, Wang Daolong, Huang Wenda, Lu Yanda, Yuan Life, Liu Jun, Hu Ling, Chen Hu, Yuan Zhizuo, Zhang Rui, Zhang Yifeng, Yan Lianna,
Ma Jun.
The previous versions of the standards replaced by this section are.
---GB/T 23901.3-2009.
Non-destructive testing radiographic inspection image quality
Part 3. Image quality classification
1 Scope
This part of GB/T 23901 specifies the image quality values to be achieved during radiographic inspection to ensure the same radiographic inspection image.
Quality Evaluation.
This section applies to the wire-type image quality meter specified in ISO 19232-1 and the order specified in ISO 19232-2 for radiographic inspection.
The ladder-type image quality meter evaluates the image quality.
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.
ISO 5579 Non-destructive testing of metal materials X or gamma radiographic inspection basic rules (Non-destructive testing-Ra-
DiographicexaminationofmetalicmaterialsbyX-andgammarays-Basicrules)
ISO 5580 Non-destructive testing industrial radiography viewing lamp minimum requirements (Non-destructive testing-Industrialradi-
ographiciluminators-Minimumrequirements)
ISO 17636 (all parts) Non-destructive testing of welds (Non-destructive testing ofwelds-
Radiographictesting)
Non-destructive testing - Radiographic image quality - Part 1 . Determination of image quality values of silk-type image quality (Non-de-
structivetesting-Imagequalityofradiographs-Part 1.Determinationoftheimagequalityvalueu-
Singwire-typeimagequalityindicators)
Non-destructive testing - Radiographic image quality - Part 2. Determination of image quality values of stepped hole image quality
(Non-destructivetesting-Imagequalityofradiographs-Part 2.Determinationoftheimagequality
Valueusingstep/hole-typeimagequalityindicators)
3 Terms and definitions
The following terms and definitions defined by ISO 5579 apply to this document.
3.1
Image quality image qualityindicator; IQI
The ability to measure the quality of the image, consisting of a series of different grades of wire or a stepped hole.
Note. The ...