NB/T 20450.5-2017Alternative welding code for mechanical components of PWR nuclear islands - Part 5: Examination of production welds (English PDF)

NB/T 20450.5-2017 is the English-translated version of 压水堆核电厂核岛机械设备焊接另一规范 第5部分：焊接检验.

Part 5 of the alternative welding code for mechanical components of pressurized water reactor nuclear islands is NB/T 20450.5-2017, on the examination of production welds.

It fixes the non-destructive testing items, proportions, methods and acceptance criteria for weld bevels and finished welds during the manufacture and installation of nuclear island machinery and equipment, and it also covers the setting up and inspection of production weld witness pieces and the manufacturer's pre-service inspection.

It applies to weld examination on nuclear island machinery and equipment in plants of that reactor type. It works with NB/T 20450.3 and NB/T 20450.4, and quotes GB/T 3375, GB/T 5185, GB/T 19866, NB/T 20002.3, NB/T 20003.7, the NB/T 20328 parts and HAF 602. Issued on 1 April 2017, it has applied since 1 October 2017.

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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.

NB/T 20450.4-2017|NB/T 20450.1-2017|NB/T 20450.2-2017|NB/T 20450.3-2017|NB/T 20002.5-2013|NB/T 20002.7-2013

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