NB/T 20450.1-2017Alternative welding code for mechanical components of PWR nuclear islands - Part 1: General requirements (English PDF)

NB/T 20450.1-2017 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1部分：通用要求.

NB/T 20450.1-2017 sets the general requirements of the alternative welding code for the mechanical components of pressurized water reactor nuclear islands, as a recommended standard of the Chinese energy industry.

It states the general rules and the requirements placed on personnel, on production equipment, on marking and traceability, on test specimens, on qualified joints and on keeping the product weld witness pieces.

Its field is the welding and surfacing of carbon steel, low alloy steel, austenitic stainless steel and nickel base alloy in nuclear island machinery and equipment.

It is read with the later parts NB/T 20450.2 to NB/T 20450.5, with GB/T 3375 and GB/T 12467.2-2009, and with the HAF 602 and HAF 603 safety rules. 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 — 15 pages — is available in the English PDF.

NB/T 20450.2-2017|NB/T 20450.3-2017|NB/T 20450.4-2017|NB/T 20450.5-2017|NB/T 20002.5-2013|NB/T 20002.7-2013

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