Path: Home > GB/T > Page725 > GB/T 18182-2025

Price & Delivery

US$439.00 · In stock · Download in 9 seconds
GB/T 18182-2025: Acoustic emission examination and evaluation of metallic pressure vessels
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 18182-2025	English	439	Add to Cart	4 days [Need to translate]	Acoustic emission examination and evaluation of metallic pressure vessels
GB/T 18182-2012	English	329	Add to Cart	3 days [Need to translate]	Acoustic emission examination and evaluation of metallic pressure vessels
GB/T 18182-2000	English	439	Add to Cart	4 days [Need to translate]	Acoustic emission examination and evaluation of metallic pressure vessels

GB/T 18182-2025: Acoustic emission examination and evaluation of metallic pressure vessels

---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.
National Standards of the People's Republic of China ICS 19.100CCS J 04 Acoustic emission testing and result evaluation methods for metal pressure vessels Released on October 31, 2025 Implemented on October 31, 2025 State Administration for Market Regulation The State Administration for Standardization issued a statement. Replaces GB/T 18182-2012

Table of contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4.Methodology Summary 2 5.Personnel Qualifications 2 6.Equipment and Materials 2 7.Testing Procedures 3 8.Grading of test results 7. 9.Evaluation of Test Results 10 Records and Reports 9 Appendix A (Normative) Performance Requirements for Acoustic Emission Detection Systems 11 Appendix B (Normative) Sensitivity Evaluation Method for Acoustic Emission Systems 13

Foreword

This document conforms to GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting is scheduled. This document replaces GB/T 18182-2012 "Methods for Testing and Evaluating Acoustic Emission of Metal Pressure Vessels", and is consistent with GB/T 18182- Compared to.2012, aside from structural adjustments and editorial changes, the main technical changes are as follows. a) Increased requirements for the channel coverage and detection sensitivity of the acoustic emission detection system [see 6.1 b)]; b) Added requirements for acoustic emission detection digital pressure gauges and pressure monitoring (see 6.2); c) The sensor selection requirements in the technical preparation before the start of the test have been changed, and the diameter and hardness of the lead-core acoustic emission simulation source have been modified. The requirements were also specified, and the amplitude range of the model source was limited (see 7.2,.2012 edition 7.2). d) Added requirements for the "sensitivity factor (Kcats)" of acoustic emission instruments in positioning calibration and reporting [see 7.5.3 and 10.2]. k)], added a method for evaluating the sensitivity of acoustic emission systems (see Appendix B); e) Increased quantitative requirements for processing changes in acoustic emission signal amplitude and energy with test pressure during the detection process (see 7.6.2.2); f) An additional requirement has been added that on-site verification is required when more than 10 acoustic emission events occur in the acoustic emission location source area during the detection process. (See 7.7.3); g) The quantitative requirements for improving the activity level have been changed (see 8.2,.2012 edition of 8.2). h) Added a calculation method when the number of acoustic emission signals in the source region is less than 5 when calculating the intensity of the acoustic emission localization source (see 8.3). i) A reference strength classification for metallic materials with yield strengths differing from Q345R by ±10% has been added (see 8.3). j) The method for re-inspecting Class III or IV acoustic emission locators has been changed (see 9.3, 9.1 in the.2012 edition). k) The defect evaluation method determined by re-inspection has been changed (see 9.4, 9.2 in the.2012 edition). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Boilers and Pressure Vessels (SAC/TC 262). This document was drafted by. China Special Equipment Inspection and Research Institute, Hefei General Machinery Research Institute Co., Ltd., and Wuhan Special Equipment Inspection Bureau. Inspection and Research Institute, Northeast Petroleum University, Nanjing Boiler and Pressure Vessel Inspection and Research Institute, Hangzhou Special Equipment Inspection and Research Institute (Hangzhou) Municipal Special Equipment Emergency Response Center), Sinopec Engineering Quality Monitoring Co., Ltd., Aerospace Materials and Processes Research Institute, Qingcheng Sound Launch Research Institute (Guangzhou) Co., Ltd., Beijing Kehai Hengsheng Technology Co., Ltd., Henan Provincial Boiler and Pressure Vessel Inspection Technology Research Institute, Anhui Huaxia High Technology Development Limited Liability Company. The main drafters of this document are. Li Guanghai, Tao Yuanhong, Lu Xinyuan, Huo Zhen, Zhang Junjiao, Li Wei, Yi Rong, Wu Zhanwen, Liu Yanlei, and Jiang Shiliang. Liu Zhejun, Xie Jiehui, Cao Luowei, Chen Moucai, Chen Xiantao, Guo Jingqian, Lou Xuyao, Li Huan. This document was first published in.2000, revised for the first time in.2012, and this is the second revision. Acoustic emission testing and result evaluation methods for metal pressure vessels

1 Scope

This document describes the acoustic emission detection and result evaluation method for metal pressure vessels under load. This document applies to acoustic emission testing of active defects in metal pressure vessels under construction and in use. It also applies to boilers, pressure piping, and other metal components. The acoustic emission testing shall be performed in accordance with the reference procedure.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 9445 Qualification and Certification of Nondestructive Testing Personnel GB/T 12604.4 Nondestructive Testing Terminology. Acoustic Emission Testing GB/T 19800 Primary Calibration of Acoustic Emission Testing Transducers for Nondestructive Testing GB/T 19801 Nondestructive testing - Acoustic emission detection - Secondary calibration of acoustic emission sensors GB/T 20737 General Terms and Definitions for Nondestructive Testing GB/T 35013 Evaluation of the suitability of pressure equipment for use NB/T 47013.2 Non-destructive testing of pressure equipment - Part 2.Radiographic testing NB/T 47013.3 Non-destructive testing of pressure equipment - Part 3.Ultrasonic testing NB/T 47013.4 Non-destructive testing of pressure equipment - Part 4.Magnetic particle testing NB/T 47013.5 Non-destructive testing of pressure equipment - Part 5.Penetrant testing NB/T 47013.6 Non-destructive testing of pressure equipment - Part 6.Eddy current testing NB/T 47013.7 Non-destructive testing of pressure equipment - Part 7.Visual inspection NB/T 47013.10 Non-destructive testing of pressure equipment - Part 10.Ultrasonic testing by time-of-flight diffraction method NB/T 47013.15 Non-destructive testing of pressure equipment - Part 15.Phased array ultrasonic testing

3 Terms and Definitions

The terms and definitions defined in GB/T 12604.4 and GB/T 20737, as well as the following terms and definitions, apply to this document. 3.1 acoustic emission source The physical source or location of transient elastic waves generated by the rapid release of energy in a material. 3.2 Acoustic emission location source The location of the acoustic emission source on the inspected part is determined by analyzing the acoustic emission data. Note. Commonly used source localization methods include area localization, computational localization, and continuous signal localization. 3.3 active activity The degree to which the number of events of an acoustic emission source changes with the loading process or time. ...