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Method of ultrasonic inspection for zirconium and zirconium alloy tubes
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Basic data
| Standard ID | GB/T 44760-2024 (GB/T44760-2024) |
| Description (Translated English) | Method of ultrasonic inspection for zirconium and zirconium alloy tubes |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | H26 |
| Classification of International Standard | 77.040.20 |
| Word Count Estimation | 7,715 |
| Date of Issue | 2024-10-26 |
| Date of Implementation | 2025-05-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 44760-2024: Method of ultrasonic inspection for zirconium and zirconium alloy tubes
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT44760-2024
ICS 77.040.20
CCSH26
National Standard of the People's Republic of China
Ultrasonic testing method for zirconium and zirconium alloy pipes
Released on October 26, 2024
Implementation on May 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed by China Nonferrous Metals Industry Association.
This document is under the jurisdiction of the National Technical Committee on Standardization of Nonferrous Metals (SAC/TC243).
This document was drafted by. China National Nuclear Corporation Baoti Zirconium Industry Co., Ltd., Northwest Zirconium Pipe Co., Ltd., Xi'an Western New Zirconium Technology Co., Ltd.
Co., Ltd., Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., National Standard (Beijing) Inspection and Certification Co., Ltd., Jiangsu Sanhe Sound Source Ultrasonic Technology Co., Ltd.
Co., Ltd., Nonferrous Metals Technology and Economics Research Institute Co., Ltd.
The main drafters of this document are. Yuan Gaihuan, Lu Hui, Han Ning, Li Hengyu, Wang Chenyang, Hu Xukun, Yue Qiang, Xie Meng, Lu Junqiang, Zhang Lunzhao, Bao Panhu,
Bai Zhihui and Li Xianjun.
Ultrasonic testing method for zirconium and zirconium alloy pipes
1 Scope
This document describes the methods for ultrasonic testing of seamless and welded zirconium and zirconium alloy tubes.
This document is applicable to the ultrasonic testing of zirconium and zirconium alloy pipes with an outer diameter of 6mm~100mm and a wall thickness to outer diameter ratio not greater than 0.2.
Ultrasonic testing of other pipes can be used for reference.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 9445-2015 Qualification and certification of non-destructive testing personnel
GB/T 12604.1 Non-destructive testing terminology Ultrasonic testing
JB/T 10061 General technical requirements for type A pulse reflection ultrasonic flaw detectors
3 Terms and Definitions
The terms and definitions defined in GB/T 12604.1 and the following apply to this document.
3.1
Used to calibrate testing equipment and assess samples for artificial defects.
3.2
reference sample
A specimen containing artificial standard defects.
3.3
The limit for determining whether the signal amplitude generated by discontinuities in a product is acceptable.
4 Principles
The ultrasonic wave generated by the sound source enters the sample under test through the coupling medium and propagates. When it encounters an interface with different acoustic impedance on both sides, part of the ultrasonic wave is lost.
The wave is reflected, and the reflected ultrasonic wave is received by the detection equipment and then processed, amplified and displayed. The displayed information is consistent with the acceptance standard.
The ultrasonic response signals of known artificial standard defects are compared to evaluate the quality of the inspected samples.
5 Test conditions
5.1 The test site should be clean, free of dust and strong electromagnetic interference, and should be safe, with adequate space and appropriate lighting.
5.2 The testing personnel shall receive technical qualification training and appraisal according to GB/T 9445-2015 or relevant standards, and obtain level 1 or above non-destructive testing qualification.
...
