GB/T 33643-2022 in English

VALID

Non-destructive testing—Test methods for leak detection by means of acoustic emission

Issued on:2022-03-09
Implemented on:2022-10-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $400.00
$388.00

Standard No:	GB/T 33643-2022
Document status:	VALID
Title in English:	Non-destructive testing—Test methods for leak detection by means of acoustic emission
Title in Chinese:	无损检测声发射泄漏检测方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2022-03-09
Implemented on:	2022-10-01
Superseding:	GB/T 33643-2017 Non-destructive testing -- Test methods for leak detection by means of acoustic emission
ICS Classification:	19.100-Non-destructive testing
Chinese Classification:	J04-Basic standards and general methods
Professional Classification:	GB-National Standard
Related Keywords:	acoustic emission detection system leak detection frequency typical leak detection distance new pipeline online detection solution acoustic emission introduction core technical specifications
Related Topics:	leakage Testing Standard Evaporative Photodetector Detector Testing Standard Non-destructive testing leak detection Non-destructive testing standards Magnetic flux leakage detector for non-destructive testing Test English Inorganic nitrogen detection method Inorganic nitrogen detection method leak detection Sequencing detection method sio2 detection method Inorganic nitrogen detection method Inorganic nitrogen detection method field emission detection Leak Detection and General Rules Leak detection series Medium leakage Efficient Leak Detector Method leak sensor Leakage Leak Detection Methods clean up the leak Acoustic emission New Leak Detection Test version Leak Tester Leak detection method Non-destructive testing techniques and methods Classification of nondestructive testing methods Missing detection Efficient Leak Detection Method Efficient leak detection methods Foreign leak detector Leak box method Leak Leak Detector Air leak measurement method Ammonia leak detection Leak testing method Leak Detection and Leak Testing cv detection method Methods of Detecting Air Leaks radio detection method gb detection vent Inorganic detection method Acoustic emission nondestructive testing principle Colored leak detection Direct pressure leak detection External Leak Rate Test Method Leakage detection Leakage detection sp method detection Damage detection method Acoustic emission testing instrument GBT33643 GB/T 33643-2017 GB/T 33643-2022 Non-destructive testing detection Seepage and leak detection Chemiluminescence method detects no SOP sdi detection method Differential and evaporative light detector detection Burette leak detection method How to use the comprehensive method of non-destructive testing DDA non-destructive testing method Leak detection value method How to check for hydrogen leaks Acid burette leak detection method Space capsule leak detection method Ethane Leak Detection Methods and Corner leak test Leak detection method-spray gun method Testing methods, testing procedures, and testing personnel correspondence list What method is used to detect solvent odor? Sterility testing methods The correct way to detect whether hydrogen gas is leaking is Leaky cable detection Extraction leak detection method Acoustic emission testing industry Gas leak detection products Regulations require efficient leak detection detection methods Leak detection in the chemical industry Acoustic vibration detection method Hydrogen leakage detection method Differential detector method development Quantitative detection method using evaporative light scattering detector High pressure leakage detection Nuclear leakage test Liquid leakage detection method Spontaneous pain detection method Development History of Gas Detection Methods Non-destructive testing methods for food National Energy Administration Steel Pipe Nondestructive Testing Method How to detect inorganic nitrogen Oil spill treatment methods gb/t 33643-2022

《GB/T 33643-2022无损检测声发射泄漏检测方法》由TC56（全国无损检测标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

Core Technical Specifications of GB/T33643-2022 Standard

Comparison of Core Revision Features

Indicator Items	2017 Edition	2022 New Edition
Sensor Protection Level	Undefined	Mandatory Requirement to Reach IP68
Pressure Indicator	Independent Chapter Provisions	All Deleted
Measurement Parameter System	Basic Parameter Group	Newly Added Cross-Correlation Time Difference Positioning Indicator

Key Performance Indicators of Acoustic Emission Detection System

According to Appendix A of the document: sensor cable attenuation needs to be <1dB/30m, and the baseline value of longitudinal wave sensitivity is -77dB (1V/μbar). Multi-channel system requirements:

Amplitude acquisition accuracy ±2dB
Correlation time difference calculation error ≤0.25μs
Dynamic range of more than 64dB guaranteed

Analysis of leakage characteristic spectrum in typical scenarios

Practical Tank Bottom Plate Detection

When applying the full array waveguide positioning algorithm, it is recommended to use a double-row sensor layout for open tanks with a horizontal spacing of <15m. Signal acquisition must meet the following requirements:

Benchmark static time ≥ 24 hours
Dynamic pressure holding sampling time ≥ 60 minutes
Turbulence discrimination threshold not less than 76dB

New pipeline online detection solution (Comparison in Table B.1)

Media type	Recommended frequency	Typical leak detection distance	Feasible pressure difference
Liquefied natural gas	15-80kHz	50-90m	3.2MPa
Crude oil	8-40kHz	120-200m	≥5.0MPa

Guide to major innovation points

The new standard deletes the old version of the safety requirements chapter and adds:

Magnetic clamp Non-destructive fixation specification
Gas-liquid two-phase medium hazard level evaluation matrix
Tighten the gradient indication verification process control (Chapter 9.2)

The formal annual report format implements the GB/T27025 laboratory standard simultaneously, and it is mandatory to archive the 150Hz filter RMS along with the pressure difference curve.

More samples: YD/T 3934-2021 QC/T 942-2021 NB/T 47013.2-2015

Sample only — not a preview of GB/T 33643-2022

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