NB/T 20009.3-2010 Welding material for pressurized water reactor nuclear power plants - Part 3: Stainless steel covered electrodes for Class 1, 2, 3 components
1 Scope
This part specifies the technical requirements, test methods and inspection rules of stainless steel covered electrodes for manual arc welding for Class 1, 2, 3 components of PWR nuclear power plants.
This part is applicable to E308L, E309L, E316L stainless steel covered electrodes for manual arc welding for Class 1, 2, 3 mechanical components of PWR nuclear power plants.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy - The diantipyryl methane phosphomolybdate gravimetric method for the determination of phosphorus content
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 223.19 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-CI-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 gravimetric 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 223.28 Methods for chemical analysis of iron steel and alloy - The α-benzoinoxime gravimetric 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 223.40 Methods for chemical analysis of iron, steel and alloy; The anion-exchange separation-sulphochlorophenol S photometric method for the determination of niobium content
GB/T 223.58 Methods for chemical analysis of iron, steel and alloy - The sodium arsenite-sodium nitrite titrimetric method for the determination of manganese 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
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium (potassium) periodate photometric method for the determination of manganese content
GB/T 223.64 Iron steel and alloyed - Determination of manganese content - Flame atomic absorption spectrometric method (GB/T 223.64-2008, ISO 10700:1994, IDT)
GB/T 223.68 Methods for chemical analysis of iron, steel and alloy - The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content
GB/T 223.72 Iron, steel and alloy - Determination of sulfur content - Gravimetric method
GB/T 223.78 Methods for chemical analysis of iron, steel and alloy - Curcumin spectrophotometric method for the determination of boron content (GB/T 223.78-2000, idt ISO 10153:1997)
GB/T 229 Metallic materials - Charpy pendulum impact test method (GB/T 229-2007, ISO 148-1:2006, MOD)
GB/T 983 Stainless steel covered electrodes
GB/T 2652 Tensile test methods on weld and deposited metal
GB/T 4334.5 Method of copper sulfate-sulfuric acid test for stainless steels
GB/T 4338 Metallic materials - Tensile testing at elevated temperature (GB/T 4338-2006, ISO 783:1999, MOD)
GB/T 11170 Method for photoelectric emission spectroscopic analysis of stainless steel
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content - Infrared absorption method after combustion in an induction furnace (GB/T 20123-2006, ISO 5350:2000, IDT)
EJ/T 1027 Welding code for mechanical components of PWR nuclear islands
NB/T 20003.3 Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 3: Radiographic testing
NB/T 20003.4 Non-destructive testing for mechanical components in nuclear island of nuclear power plants - Part 4: Penetrant testing
3 Model
The electrode models are E308L, E309L, and E316L.
Electrode manufacturers shall evaluate the electrode grades in accordance with the relevant provisions of EJ/T 1027.
4 Technical requirements
4.1 Dimension
The electrode dimension shall meet the requirements of Table 1.
The length of the holding end of the electrode shall meet the requirements of Table 2.
Table 1 Electrode dimension
Foreword i 1 Scope 2 Normative references 3 Model 4 Technical requirements 4.1 Dimension 4.2 Coating 4.3 T-joint fillet welds 4.4 Chemical composition of deposited metal 4.5 Mechanical properties of deposited metal (as-welded condition) 4.6 Measurement of δ ferrite content in deposited metal 4.7 Intergranular corrosion test of deposited metal 4.8 Non-destructive testing of welds 5 Test methods 5.1 T-joint fillet welds 5.2 Preparation of deposited metal test plate 5.4 Mechanical property test of deposited metal 5.5 Measurement of δ ferrite content in deposited metal 5.6 Intergranular corrosion test of deposited metal 5.7 Non-destructive testing of welds 6 Inspection rules 6.1 Classification of batches 6.2 Sampling method of electrodes 6.3 Acceptance 6.4 Re-inspection 7 Packaging, marking and quality certificate 7.1 Packaging 7.2 Marking 7.3 Quality certificate Annex A (Normative) Delong diagram
