Standard No.:	NB/T 47014-2011
English Name:	Welding procedure qualification for pressure equipment
Chinese Name:	承压设备焊接工艺评定
Professional Classification:	NB    Professional Standard - Energy
Issued by:	National Energy Administration
Issued on:	2011-7-1
Implemented on:	2011-10-1
Status:	superseded
Superseded by:	NB/T 47014-2023 Welding procedure qualification for pressure equipment
Superseded on:	2024-6-28
Superseding:	JB 4708-2000 Welding procedure qualification for steel pressure vessels - Welding specification for steel pressure vessels - Mechanical proper ty tests of product welded test JB 4708-1920 JB 4708-1919 JB 4744-2000 Mechanical property tests of product welded test coupons for pressure equipments
Language:	English
File Format:	PDF
Word Count:	20000 words
Price(USD):	300.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the rules, test methods and qualified indexes of welding procedure qualification for butt weld and fillet weld, anticorrosive overlaying process qualification, welding procedure qualification for composite metallic materials, welding procedure qualification and supplementary welding procedure qualification for heat exchange tube and tube plate, and stud arc welding procedure qualification, for pressure equipment (boiler, pressure vessel and pressure piping). This standard is applicable to welding techniques such as oxyfuel gas welding, shielded metal arc welding, submerged arc welding, gas tungstun arc welding, gas metal arc welding, electroslag welding, plasma arc welding, friction welding, electrogas welding and stud arc welding. This standard is not applicable to gas cylinder. 2 Normative References The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the dated versions apply to this standard. For undated references, the latest edition of the normative document (include all the amendments) is applicable to this standard. GB 150 (all Parts) Pressure Vessels GB 151 Tubular Heat Exchangers GB/T 228 Metallic Materials-Tensile Testing GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method GB/T 699 Quality Carbon Structural Steels GB/T 700 Carbon Structural Steels GB/T 710 Hot-rolled Quality Carbon Structural Steel Sheets and Strips GB/T 711 Hot-rolled Quality Carbon Structural Steel Plates Sheets and Wide Strips GB 713 Steel Plates for Boiler and Pressure Vessels GB 912 Hot-Rolled Plates and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels GB/T 1176 Specification for Cast Copper Alloys GB/T 1527 Drawn Tube of Copper and Copper Alloys GB/T 1528 Extruded Tube of Copper and Copper Alloys GB/T 1591 High Strength Low Alloy Structural Steels GB/T 2040 Sheet of Copper and Copper Alloy GB/T 2054 Nickel and Nickel Alloy Sheets GB/T 2653 Bend Test Methods on Welded Joints GB/T 2882 Product of Geographical Indication-Fuling Mustard Tuber GB/T 3077 Alloy Structure Steels GB 3087 Seamless Steel Tubes for Low and Medium Pressure GB/T 3091 Welded Steel Pipes for Low Pressure Liquid Delivery GB/T 3274 Hot-rolled Plates and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels GB/T 3280 Cold Rolled Stainless Steel Plate Sheet and Strip GB/T 3375 Welding Terminology GB 3531 Low Alloy Steel Plates for Low Temperature Pressure Vessels GB/T 3621 Titanium and Titanium Alloy Plate and Sheet GB/T 3624 Titanium and Titanium Alloy Seamless Tubes GB/T 3625 Titanium and Titanium Alloy Tube for Condensers and Heat Exchangers GB/T 3670 Coated Electrodes for Copper and Copper Alloys GB/T 3880 (all parts) Wrought Aluminium and Aluminium Alloy Plates, Sheets and Strips for General Engineering GB/T 4237 Hot Rolled Stainless Steel Plate Sheet and Strip GB/T 4423 Copper and Copper-alloy Cold-drawn Rod and Bar GB/T 4435 Nickel and Nickel Alloys Bars GB/T 4437.1 Aluminium and Aluminium Alloy Extruded Tubes--Part 1: Seamless Tubes GB/T 5293 Carbon Steel Electrodes and Fluxes for Submerged Arc Welding GB 5310 Seamless Steel Tubes and Pipes for High Pressure Boiler GB 6479 Seamless Steel Tubes For High-Pressure For Chemical Fertilizer Equipment GB/T 6614 Titanium and Titanium Alloy Castings GB 6653 Steel Plates and Strips for Welded Gas Cylinders GB/T 6893 Aluminium and Aluminium Alloy Cold Drawn (Rolled) Seamless Tubes GB/T 8163 Seamless Steel Tubes for Liquid Service GB/T 8890 Seamless Copper Alloy Tube For Heat-Exchanger GB/T 9460 Copper and Copper Alloy Wires and Rods GB/T 9711.1 Petroleum and Natural Gas Industries-Steel Pipe for Pipelines-Technical Delivery Conditions- Part 1: Pipes of Requirement Class A GB/T 9711.2 Petroleum and Natural Gas Industries-Steel Pipe for Pipelines-Technical Delivery Conditions- Part 2: Pipes of Requirements Class B GB 9948 Seamless Steel Tubes for Petroleum Cracking GB/T 11352 Carbon Steel Castings for General Engineering Purpose GB/T 12229 General Purpose Industrial Valves-Specification of Carbon Steel Castings GB/T 12230 General Purpose Industrial Valves-Specification of Stainless Steel Castings GB/T 12459 Steel Butt-welding Seamless Pipe Fittings GB/T 12470 Low alloy steel electrodes and fluxes for submerged arc welding GB/T 12771 Welded Stainless Steel Pipes for Liquid Delivery GB/T 13237 Cold-Rolled Quality Carbon Structural Steel Sheets and Strips GB 13296 Seamless Stainless Steel Tubes for Boiler and Heat Exchanger GB/T 13401 Steel Plate Butt-Welding Pipe Fittings GB/T 13814 Nickel and Nickel Alloy Welding Rods GB/T 14845 Titanium Sheet for Plate Heat Exchangers GB/T 14976 Stainless Steel Seamless Tubes for Fluid Transport GB/T 15008 Corrosion-resisting Alloy Bars GB/T 15620 Nickel and Nickel alloy wires and rods GB/T 16253 Steel Castings for Pressure Purposes GB/T 16598 Titanium and Titanium Alloy Disc and Ring GB/T 17791 Seamless Copper Tube for Air Conditioner and Refrigeration Equipment GB/T 17854 Stainless Steel Electrodes and Fluxes for Submerged Arc Welding GB/T 18984 Seamless Steel Tubes For Low-Temperature-Service Piping GB 19189-2011 Quenched and Tempered High Strength Steel Plates for Pressure Vessels GB/T 20878 Stainless and Heat-resisting Steels - Designation and Chemical Composition GB/T 21832 Austenitic - Ferritic (Duplex) Grade Stainless Steel Welded Tubes and Pipes GB/T 21833 Austenitic - Ferritic (Duplex) Grade Stainless Steel Seamless Tubes and Pipes GB 24511-2009 Stainless Steel Plate, Sheet and Strip for Pressure Equipment GB/T 24593 Welded Austenitic Stainless Steel Tubes for Boiler and Heat-exchanger NB/T 47008 Carbon Steel and Alloy Steel Forgings for Pressure Equipment NB/T 47009 Low-alloy Steel Forgings for Low Temperature Pressure Equipment NB/T 47010 Stainless and Heat-resisting Steel Forgings for Pressure Equipment NB/T 47018 (all parts) Technical Permission of Welding Materials for Pressure Equipment JB/T 4730 (all parts) Nondestructive Testing of Pressure Equipment JB/T 4734 Aluminium Welded Vessels JB 4741 Nickel-copper Alloy Hot Rolled Plate for Pressure Vessels JB 4742 Nickel-copper alloy Seamless Tube and Pipe for Pressure Vessels JB 4743 Nickel-copper Alloy Forgings for Pressure Vessels JB/T 9625 Specification for Pressure Retaining Casting of Boiler Pipe Fittings JB/T 9626 Specification for Boiler Forging JB/T 10087 Specifications for steel casting of steam turbines for pressure purposes YB/T 5264 Corrosion-resisting Alloy Forging YB/T 5353 Hot-rolled Plates of Corrosion-resisting YB/T 5354 Cold-rolled Sheets of Corrosion-resisting Alloy 3 Terms and Definitions For the purpose of this Standard, those defined in GB/T 3375 and the following terms and definitions apply. 3.1 Welding procedure qualification Assessment of test process and result carried out to verify the correctness of the proposed welding procedure of weldment. In this Standard, the welding procedure qualification refers to the process to carry out verifying test and result assessment for preliminary welding procedure specification, in order to make the mechanical property and bending property of welded joints or the chemical compositions of overlaying meet the requirements. 3.2 Preliminary welding procedure specification (pWPS) Document of welding procedure proposed for welding procedure qualification. 3.3 Procedure qualification report (PQR) Report recording verifying test and inspection result and assessing proposed pWPS. 3.4 Welding procedure specification (WPS) Document of welding procedure prepared according to qualified PQR and for product welding. 3.5 Welding working instruction (WWI) Detailed working document for processing and operation concerning weldment manufacturing. The operation instructions applied by welder in welding, which can guarantee the reproducibility of welding quality. 3.6 Supplementary welding procedure qualification Assessment of verifying test and result carried out for proposed welding procedure specification in order to make the supplementary characteristics of the welded joint (e.g. fillet weld thickness of heat exchange tube and tube plate) meet the requirement. 3.7 Weldment Pressure equipment or its parts that are connected by welding or of overlaying. The weldment is composed of two parts--base metal and welded joint (or overlay).

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 General 5 Welding Procedure Qualification Factors and Classification 6 Butt Weld and Fillet Weld Welding Procedure Qualification 7 Anticorrosive Overlaying Procedure Qualification Appendix A (Informative) Flow Diagram of Welding Procedure Specification Appendix B (Normative) Additional Regulations for Base Metal, Filler Metal and Welding Technique Appendix B (Normative) Additional Regulations for Base Metal, Filler Metal and Welding Technique Appendix C (Normative) Welding Procedure Qualification for Composite Metallic Materials Appendix D (Normative) Welding Procedure Qualification and Supplementary Welding Procedure Qualification for Heat Exchange Tube and Tube Plate Appendix E (Normative) Stud Arc Welding Procedure Qualification Appendix F (Informative) Recommended Format of Welding Procedure Qualification Table Appendix G (Informative) Common English Abbreviations and Codes for Welding Procedure Qualification