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GB/T 26953-2011 English PDF (GBT26953-2011)

GB/T 26953-2011 English PDF (GBT26953-2011)

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GB/T 26953-2011: Non-destructive testing of welds -- Penetrant testing of welds -- Acceptance levels

This Standard specifies the acceptance levels indicated in penetrant testing of metal welds with deficient surface opening. This Standard shall mainly be applied to manufacturing inspection. If it is considered as applicable, this Standard can also be applied to in-service inspection.
GB/T 26953-2011
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 25.160.40
J 33
Non-destructive Testing of Welds - Penetrant
Testing of Welds - Acceptance Levels
(ISO 23277.2006, MOD)
ISSUED ON. SEPTEMBER 29, 2011
IMPLEMENTED ON. MARCH 1, 2012
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration Committee of the PEOPLE
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Testing Parameters ... 5
5 Acceptance Levels ... 5
Appendix A (Informative) Recommended Testing Parameters ... 7
Foreword
This Standard is drafted in accordance with stipulations in GB/T 1.1-2009. This Standard adopts the re-drafting law for modification in accordance with ISO 23277. 2006 Non-destructive Testing of Welds - Penetrant Testing of Welds - Acceptance Levels.
Please see the technical differences and the causes for these differences in comparison with ISO 23277.2006.
---In terms of normative references, this Standard makes certain adjustment with technical differences to get adapted to the Chinese technical conditions. The condition of such adjustment is intensively reflected in ?€?Normative References?€? in Chapter 2. Please see the specific adjustment below.
??? GB/T 12604.3, which equivalently adopts international standard, is taken as a replacement of ISO 12706 (please refer to Chapter 3);
??? GB/T 18851.1, which equivalently adopts international standard, is taken as a replacement of ISO 3452 (please refer to Chapter 1, 4.4 and 5.2);
??? GB/T 18851.2, which equivalently adopts international standard, is taken as a replacement of ISO 3452.2 (please refer to 4.2);
??? GB/T 20737, which equivalently adopts international standard, is taken as a replacement of ISO/TS 18173 (please refer to Chapter 3);
??? ISO 5817 is deleted;
??? ISO 10042 is deleted;
??? ISO 17635 is deleted;
??? EN 1330-2 is deleted.
This Standard was proposed and shall be under the jurisdiction of National Technical Committee 55 on Welding of Standardization Administration of China (SAC/TC 55). The drafting organizations of this Standard. Shanghai Test Inspection Technologies Co., Ltd., Shanghai Chengyou Industrial Group Co., Ltd., Shanghai Xinmeida Flaw Detection Equipment Co., Ltd., Tianjin Chengxinda Metal Testing Technology Co., Ltd., Harbin Boiler Company Limited, Shanghai Research Institute of Materials. The main drafters of this Standard. Zhangping, Jin Yufei, Xia Jianguo, Yanggui, Zhaocheng, Wu Qinzhen.
Non-destructive Testing of Welds - Penetrant
Testing of Welds - Acceptance Levels
1 Scope
This Standard specifies the acceptance levels indicated in penetrant testing of metal welds with deficient surface opening.
This Standard shall mainly be applied to manufacturing inspection. If it is considered as applicable, this Standard can also be applied to in-service inspection. In this Standard, the acceptance levels are based on the adoption of the method stipulated in GB/T 18851.1 and the attainable testing capability based on the parameters recommended in Appendix A. Acceptance levels are related with welding standards, adopted standards, technical conditions or laws and regulations. More information regarding the indicated acceptance levels can be inquired from product or application standards.
2 Normative References
The following documents are indispensable to the application of this Standard. In terms of references with a specified date, only versions with a specified date are applicable to this Standard. The latest version (including all the modifications) of references without a specified date is also applicable to this Standard.
GB/T 12604.3 Non-destructive Testing - Terminology - Terms Used in Penetrant Testing (GB/T 12604.3-2005, ISO 12706.2000, IDT)
GB/T 18851.1 Non-destructive Testing - Penetrant Testing - Part 1. General Principles (GB/T 18851.1-2005, ISO 3452. 1984, IDT)
GB/T 18851.2 Non-destructive Testing - Penetrant Testing - Part 2. Testing of Penetrant Materials (GB/T 18851.2-2008, ISO 3452-2.2006, IDT)
GB/T 20737 Non-destructive Testing - General Terms and Definitions (GB/T 20737-2006, ISO/TS 18173.2005, IDT)
3 Terms and Definitions
Those defined in GB/T 12604.3 and GB/T 20737, and the following terms and definitions are applicable to this Standard.

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