GB/T 18851.1-2012 in English

《GB/T 18851.1-2012无损检测 渗透检测 第1部分：总则》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。

1 Scope

This part of GB/T 18851 defines a method of penetrant testing used to detect discontinuities, e.g. cracks, laps, folds, porosity and lack of fusion, which are open to the surface of the material to be tested. It is mainly applied to metallic materials, but can also be performed on other materials, provided that they are inert to the test media and they are not excessively porous, examples of which are castings, forgings, welds, ceramics, etc.
The term "discontinuity" is used here in the sense that no evaluation concerning acceptability or non-acceptability is included.
Methods for determining and monitoring the essential properties of penetrant testing products to be used are specified in GB/T 18851.2 and GB/T 18851.3.

2 Normative References

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies. For undated references, the latest edition (including all the amendments) applies.
GB/T 5097 Non-destructive Testing - Penetrant Testing and Magnetic Particle Testing - Viewing Conditions (ISO 3059: 2001, IDT)
GB/T 9445 Non-destructive Testing- Qualification and Certification of Personnel (ISO 9712: 2005, IDT)
GB/T 12604.3 Non-destructive Testing - Terminology - Terms Used in Penetrant Testing (ISO 12706: 2000, IDT)
GB/T 18851.2 Non-destructive Testing - Penetrant Testing - Part 2: Testing of Penetrant Materials (ISO 3452-2: 2006, IDT)
GB/T 18851.3 Non-destructive Testing - Penetrant Testing - Part 3: Reference Test Blocks (ISO 3452-3: 1998, IDT)
GB/T 18851.4 Non-destructive Testing - Penetrant Testing - Part4: Equipment (ISO 3452-4:1998, IDT)

3 Terms and Definitions

For the purpose of this document, the terms and definitions established in GB/T 12604.3 apply.

4 Safety Precautions

Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Safety Precautions
5 General Principles
6 Products, Sensitivity and Designation
7 Compatibility of Testing Materials with the Part(S) to Be Tested
8 Test Procedure
9 Test Report
Appendix A (Normative) Main Stages of the Penetrant Testing
Appendix B (Informative) Example of A Test Report
Appendix C (Normative) Mutually Equivalent International and European Standards in This Part