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DL/T 821-2017Radiographic examination and quality classification of welded butt joints in metallic materials (English PDF)

金属熔化焊对接接头射线检测技术和质量分级

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Issued by

National Energy Administration

Level / Type

National · Recommended

Issue date

November 15, 2017

Implementation date

March 1, 2018

Scope

DL/T 821-2017 is the English-translated version of 金属熔化焊对接接头射线检测技术和质量分级.

DL/T 821-2017 — This standard specifies the technical requirements and quality classification methods for X-ray and gamma ray detection of metal fusion welded butt joints.

This standard applies to the radiation inspection of metal material fusion welding butt joints in the power industry.

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Document preview — DL/T 821-2017

National Standard of the People's Republic of China

ICS: 19.100
Classification: N 78
Replacing: DL/T 821-2002

Issued by: National Energy Administration

What this standard covers1
Document data2

What this standard covers

This standard specifies the technical requirements and quality classification methods for X-ray and gamma ray detection of metal fusion welded butt joints. This standard applies to the radiation inspection of metal material fusion welding butt joints in the power industry. This standard does not apply to the radiation inspection of butt joints such as friction welding and flash welding.

Document data

International classification (ICS): 19.100.

Chinese classification (CCS): N78.

Estimated length of the Chinese original: 36,362 words.

Supersedes the earlier edition DL/T 821-2002.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Cited by

NB/T 25017-2013Technical supervision code for metal in conventional island of nuclear power plants

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