NB/T 20450.4-2017 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
NB/T 20450.4-2017	RFQ	ASK	6 days	Alternative welding code for mechanical components of PWR nuclear islands Part 4: Production welds and heat treatment	Obsolete

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Basic data

Standard ID: NB/T 20450.4-2017 (NB/T20450.4-2017)
Description (Translated English): Alternative welding code for mechanical components of PWR nuclear islands Part 4: Production welds and heat treatment
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: F69
Classification of International Standard: 27.120.20
Word Count Estimation: 28,284
Date of Issue: 2017-04-01
Date of Implementation: 2017-10-01
Quoted Standard: GB/T 3375; GB/T 5185; GB/T 19866; NB/T 20005.32; NB/T 20006.31; NB/T 20450.1; NB/T 20450.2; NB/T 20450.3; NB/T 20450.5
Regulation (derived from): National Energy Board Bulletin 2017 No. 7; Industry Standard Filing Announcement 2017 No. 9 (Total No. 213)
Issuing agency(ies): National Energy Administration
Summary: This standard stipulates the storage and use of welding consumables in the manufacturing and installation process of nuclear island machinery and equipment of PWR nuclear power plant, the preparation and welding of groove preparation, welding method, surface cleanliness and protection, product welding requirements, accessory welding, Welding rework, welding related heat treatment (preheating, afterheating, stress relief heat treatment) and other requirements. This standard applies to the welding and welding related heat treatment of nuclear island machinery and equipment of pressurized water reactor nuclear power plants.

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