NB/T 20007.24-2013Stainless steel for pressurized water reactor nuclear power plants - Part 24: Pressure-retaining austenitic-ferritic stainless steel castings for reactor coolant pump casings (English PDF)

NB/T 20007.24-2013 is the English-translated version of 压水堆核电厂用不锈钢 第24部分：反应堆冷却剂泵蜗壳用奥氏体-铁素体不锈钢承压铸件.

NB/T 20007.24-2013 is Part 24 of the Chinese energy industry series on stainless steel for pressurized water reactor nuclear power plants, written for pressure-retaining austenitic-ferritic stainless steel castings used in reactor coolant pump casings.

It governs what such castings must satisfy as a material forming part of the pressure boundary of the coolant pump. The Chinese classification J31 groups it with pump components, while the international classification 77.140.80 places it among steel castings for pressure service.

Chemical composition is verified through the GB/T 223 series of analytical methods for iron and steel, cited at length by the standard. Issued on 8 June 2013, it has applied since 1 October 2013.

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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.

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