GB/T 40734-2021 English PDF

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GB/T 40734-2021: Non-destructive testing of welds - Phased array ultrasonic testing(PAUT) - Acceptance levels
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Basic data

Standard ID: GB/T 40734-2021 (GB/T40734-2021)
Description (Translated English): Non-destructive testing of welds - Phased array ultrasonic testing(PAUT) - Acceptance levels
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J33
Word Count Estimation: 24,270
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40734-2021: Non-destructive testing of welds - Phased array ultrasonic testing(PAUT) - Acceptance levels

---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.
Non-destructive testing of welds - Phased array ultrasonic testing(PAUT) - Acceptance levels ICS 25.160.40 CCSJ33 National Standards of People's Republic of China Phased Array Ultrasonic Testing for Nondestructive Testing of Welds Acceptance level (ISO 19285.2017, IDT) Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Symbol 1 5 Acceptance level 2 6 Indicating evaluation 2 7 Determination of length and height 2 8 Determination of length and highest echo amplitude 3 9 Acceptance based on indicated length and height 3 10 Acceptance based on indicated length and amplitude 6 Appendix A (Normative) Level 9 Appendix B (Normative) Fixed echo amplitude level technology 20

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. The translation method used in this document is equivalent to ISO 19285.2017 "Acceptance Level of Phased Array Ultrasonic Testing for Weld Nondestructive Testing". The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows. ---GB/T 11345-2013 Ultrasonic testing technology, testing level and assessment for non-destructive testing of welds (ISO 17640.2010, MOD); ---GB/T 12604.1-2005 Non-destructive testing term Ultrasonic testing (ISO 5577.2000, IDT); ---GB/T 19418-2003 steel arc welding joint defect quality classification guide (ISO 5817.1992, IDT); ---GB/T 29712-2013 Acceptance level of ultrasonic testing for non-destructive testing of welds (ISO 11666.2010, MOD); ---GB/T 40733-2021 The application of automatic phased array ultrasonic technology for non-destructive testing of welds (ISO 13588. 2019, MOD). This document was proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Welding Standardization Technical Committee (SAC/TC55). Drafting organizations of this document. Shanghai Materials Research Institute, Offshore Oil Engineering Co., Ltd., Shanghai Baoye Engineering Technology Co., Ltd., East China University of Science and Technology, Tianjin Special Equipment Supervision and Inspection Technology Research Institute, China Petroleum and Natural Gas Pipeline Science Research Institute Co., Ltd., Erzhong (Town Jiang) Heavy Equipment Co., Ltd., Jiangsu Fangtian Power Technology Co., Ltd., Gansu Junli Engineering Technology Co., Ltd., Wuhan Zhongke Chuang New Technology Co., Ltd., Ayntech Technology (Shanghai) Co., Ltd., Harbin Welding Research Institute Co., Ltd. The main drafters of this document. Ding Jie, Li Jiang, Jiang Jiansheng, Liu Guiji, Deng Xiaojun, Huang Yin, Zhan Jun, Zhang Yifeng, Xiang Yanxun, Liu Yihuan, Li Weixing, Zhou Guangyan, Ma Yanli, Ma Junpeng, Wang Tonghe, Sun Yue, Ma Jun, Wang Zhimin, Gui Linlin, Zhang Rui, Wang Lili, Zhai Lanna, Jin Jingjing, Su Jinhua. Phased Array Ultrasonic Testing for Nondestructive Testing of Welds Acceptance level

1 Scope

This document specifies the weld quality level established based on ISO 5817, for full penetration welding of ferritic steel with a base metal thickness of not less than 6mm The acceptance level of phased array ultrasonic testing (PAUT) for the joints. The acceptance level specified in this document is applicable to classification according to the instructions specified in ISO 13588.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. ISO 5577 Non-destructive testing Ultrasonic testing terms (Non-destructive testing-Ultrasonic testing- Vocabula- ry) ISO 5817 Welded welded joints of fusion welded steel nickel-titanium and its alloys (excluding high-energy beam welding) Lack of quality level [Welding- Fusion-Weldedjointsinsteel,nickel,titaniumandtheiraloys(beam weldingexclu- ded)-Qualitylevelsforimperfections] ISO 11666 Non-destructive testing of welds ultrasonic testing acceptance level (Non-destructive testing of welds-Ultrasonic testing-Acceptancelevels) ISO 13588 Non-destructive testing of welds. Ultrasonic testing. Application of automatic phased array ultrasonic technology (Non-destructive testing of welds-Ultrasonictesting-Useofautomatedphasedarraytechnology) ISO 15626 Time-of-Flight Diffraction Technology (TOFD) Acceptance Level for Non-destructive Testing of Welds [Non-destructivetestingofwelds- Time-of-flightdiffractiontechnique(TOFD)-Acceptancelevels] ISO 17640 Non-destructive testing of welds, ultrasonic testing technology, testing level and evaluation (Non-destructive testing of welds-Ultrasonictesting-Techniques,testinglevels,andassessment)

3 Terms and definitions

The terms and definitions defined by ISO 5577 and ISO 13588 apply to this document. The website of the ISO and IEC standardized terminology database is as follows.

4 symbols

The following symbols apply to this document. h --- height. hg---the sum of the height of a single indicator and the distance between its adjacent indicator heights. ......

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