Standard No.:	NB/T 20009.7-2012
English Name:	Welding Material for Pressurized Water Reactor Nuclear Power Plants-Part 7: Stainless Steel Wires and Filler Rods for Classes 1, 2, 3 Components
Chinese Name:	压水堆核电厂用焊接材料 第7部分：1、2、3级设备用不锈钢焊丝和填充丝
Professional Classification:	NB    Professional Standard - Energy
Issued by:	National Energy Administration
Issued on:	2012-1-6
Implemented on:	2012-4-6
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	100.0
Delivery:	via email in 1 business day

1 Scope This part specifies the models, technical requirements, test methods, inspection rules, etc. of stainless steel wires and filler rods (hereafter referred to as “welding wires”) for Class 1, 2, 3 components of pressurized water reactor nuclear power plant. This part is applicable to ER308L, ER309L and DER316L stainless steel wires for tungsten electrode gas shielded arc welding of Class 1, 2, 3 components of pressurized water reactor nuclear power plant. 2 Normative References The following documents are indispensable for the application of this document. For dated references, only the dated editions apply. For undated references, the latest editions (including any amendments) apply. GB/T 223.03 Methods for Chemical Analysis of Iron, Steel and Alloy — The Diantipyryl Methane Phosphomolybdate Gravimetric Method for the Determination of Phosphorus Content GB/T 223.04 Alloyed Steel — Determination of Manganese Content — Potentiometric or Visual Titration Method GB/T 223.05 Steel and Iron — Determination of Acid-soluble Silicon and Total Silicon Content — Reduced Molybdosilicate Spectrophotometric Method (GB/T 223.05-2008, ISO 4829-1:1986, ISO 4829-2:1988, MOD) GB/T 223.11 Iron Steel and Alloy — Determination of Chromium Content — Visual Titration or Potentiometric Titration Method (GB/T 223.11-2008, ISO 4937:1986, MOD) GB/T 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy — The Sodium Thiosulfate Separation Iodimetric Method for the Determination of Copper Content GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy — The Neocuproine-chloroform Extraction Photometric Method for the Determination of Copper Content GB/T 223.21 Methods for Chemical Analysis of Iron Steel and Alloy — The 5-CL-PADAB Spectrophotometric Method for the Determination of Cobalt Content GB/T 223.22 Methods for Chemical Analysis of Iron, Steel and Alloy — The Nitroso-R-salt Spectrophotometric Method for the Determination of Cobalt Content GB/T 223.25 Methods for Chemical Analysis of Iron, Steel and Alloy — The Dimethylglyoxime Spectrophotometric Method for the Determination of Nickel Content GB/T 223.26 Methods for Chemical Analysis of Iron, Steel and Alloy — The Thiocyanate Direct Photometric Method for the Determination of Molybdenum Content GB/T 223.36 Methods for Chemical Analysis of Iron, Steel and Alloy — The Neutral Titration Method for the Determination of Nitrogen Content after Distillation Separation GB/T 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy — The Indophenal Blue Photometric Methods for the Determination of Nitrogen Content after Distillation Separation GB/T 223.38 Methods for Chemical Analysis of Iron, Steel and Alloy — The Anion-exchange Separation-gravimetric Method for the Determination of Niobium Content GB/T 223.40 Iron Steel and Alloy — Detetmination of Niobium Content by the Sulphochlorophenol S Spectrophotometric Method GB/T 223.59 Methods for Chemical Analysis of Iron, Steel and Alloy — The Reduced Molybdoantimonyl Phosphoric Acid Photometric Method for the Determination of Phosphorus Content GB/T 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy — The Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon Content GB/T 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy — The Ammonium Phosphomolybdate Volumetric Method for the Determination of Phosphorus Content

Contents Foreword I 1 Scope 2 Normative References 3 Type 4 Technical Requirements 4.1 Chemical composition 4.2 Size 4.3 Surface quality 4.4 Winding requirements 4.5 Mechanical property of deposited metal (as welded) 4.6 Delta ferrite content determination of deposited metal (as welded) 4.7 Intergranular corrosion test of deposited metal (heat treatment condition) 4.8 Radiographic test for weld 5 Test Methods 5.1 Chemical composition analysis 5.2 Size and surface quality 5.3 Preparation of deposited metal specimen 5.4 Mechanical property test of deposited metal 5.5 Delta ferrite content of deposited metal 5.6 Intergranular corrosion test of deposited metal 5.7 Radiographic test for weld 6 Inspection Rules 6.1 Batch division 6.2 Sampling method 6.3 Acceptance 6.4 Re-inspection 7 Packaging, Marking and Quality Certificate 7.1 Packaging 7.2 Marking 7.3 Quality Certificate Appendix A (Normative) Delong Diagram