GB/T 36232-2018Non-destructive testing of welds—Test method on electron-beam welded joints by industrial computed tomography(CT) (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

Introduction

Electron beam welding is a welding process that uses electron beams as a heat source. It is used in various industries such as aviation, aerospace, weapons, automobiles, and machinery. Has been widely used. Industrial CT has been used for non-destructive testing of electron beam weld quality for more than 20 years, ensuring the quality of electron beam welding parts. It plays an important role in quantity and reliability. This standard is based on the experience of many years of experience in CT inspection of electron beam weld industry. Fixed.

1 Scope

This standard specifies the terms and definitions, personnel, environmental conditions, and inspections for the detection of electron beam welded joints by industrial computer tomography (CT). Test system, comparison sample, test preparation, test procedures, results description, test report and other requirements.

This standard applies to the qualitative, quantitative and positioning detection of internal defects of electron beam welded joints.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 3375 welding terminology

GB/T 9445 Non-destructive testing personnel qualification and certification

GB 18871 Basic standards for ionizing radiation protection and radiation source safety

GB/T 22085.1 Guidelines for the classification of defects in electron beam and laser welded joints - Part 1. Steel

GB/T 22085.2 Electron beam and laser welded joints - Part 1

GB/T 29034 Non-destructive testing industrial computer tomography (CT) guide

General requirements for industrial computer tomography (CT) testing of non-destructive testing GB/T 29070

GB/T 34365 Non-destructive testing terminology industrial computer tomography (CT) detection

GBZ 98 radiation worker health requirements

GBZ 117 industrial X-ray flaw detection radiation protection requirements

3 Terms and definitions

The terms and definitions defined in GB/T 3375, GB/T 34365, GB/T 22085.1, GB/T 22085.2, GB/T 29034 apply to this document.

4 Testing personnel

4.1 Personnel engaged in CT inspection of welds in electron beam welding parts shall be trained, evaluated and obtained in accordance with the relevant provisions of GB/T 9445. Corresponding technical qualification certificates, all levels of testing personnel should engage in technical work corresponding to their own qualification level.

4.2 Personnel engaged in CT inspection of welds in electron beam welding parts shall comply with GBZ 98 standard and shall be protected by ionizing radiation protection. Knowledge training, qualification certificate.

4.3 Personnel engaged in industrial CT testing should wear personal dosimeters when working, and personal dosimeters should be sent to relevant local authorities for inspection. Test, the absorbed dose value of the test personnel should comply with the relevant provisions of GB 18871.

4.4 Personnel engaged in the CT inspection of welds in electron beam welding parts should be familiar with the electron beam welding process, joint form, defect type, etc. know how.