S9074-AQ-GIB-010/248 Rev 1
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4-4.1.11 Fillet Welds – Welding on Bare Surfaces. ............................................................................... 4-9 4-4.1.12 Fillet Welds – Welding Over Primer-Coated Surfaces. ........................................................... 4-9 4-4.1.13 Heat Input................................................................................................................................. 4-9 4-4.1.13.1 Test Assembly Welding.................................................................................................. 4-9 4-4.1.13.2 Heat Input Calculation.................................................................................................. 4-10 4-4.1.14 Bead Width for Manual and Semi-Automatic Welding Where Toughness is Required........ 4-10 4-4.1.15 Multiple Processes. ................................................................................................................ 4-10 4-4.2 Qualification Requirements for Weld Surfacing. .............................................................................. 4-11 4-4.2.1 Weld Cladding for Corrosion Resistance................................................................................. 4-11 4-4.2.2 Hardfacing for Wear Resistance. ............................................................................................. 4-11 4-4.3 Resistance Welding. .......................................................................................................................... 4-11 4-4.4 Stud Welding. .................................................................................................................................... 4-11 4-4.4.1 Method of Qualification. .......................................................................................................... 4-12 4-4.4.2 Procedure Requirements. ......................................................................................................... 4-13 4-4.4.3 Internally Threaded Studs. ....................................................................................................... 4-13 4-4.5 Welds Made Without Adding Filler Metal. ....................................................................................... 4-13 4-4.6 Seal Welds, Pipe Socket Welds and Tube-to-Tubesheet Welds (Except for Tube-to-Header Seal Welds; See 4-4.8)......................................................................................................................................... 4-13 4-4.6.1 Socket Joints............................................................................................................................. 4-13 4-4.6.1.1 Test Assembly. ............................................................................................................... 4-14 4-4.6.1.1.1 Inspection and Testing. ........................................................................................................ 4-14 4-4.6.2 Seal Welds................................................................................................................................ 4-14 4-4.6.2.1 Seal Welds Other Than Fillet and Edge Seal Welds. ..................................................... 4-14 4-4.6.2.2 Fillet Seal Welds in Pipe................................................................................................. 4-14 4-4.6.2.3 Fillet Seal Welds in Other Than Pipe, and Edge Seal Welds. ........................................ 4-14 4-4.6.3 Tube-to-Tubesheet Welds. ....................................................................................................... 4-14 4-4.7 Special Welds. ................................................................................................................................... 4-14 4-4.8 Tube-to-Header Seal Welds in Boiler Components. ......................................................................... 4-14 4-4.8.1 Requirements............................................................................................................................ 4-15 4-4.9 Lock Welds. ....................................................................................................................................... 4-15 4-4.10 Temperature Controlled Areas (TCA). ............................................................................................ 4-16 4-5 Evaluation of Procedure Qualification Weldments..................................................................................... 4-16 4-5.1 Non-Destructive Tests. ...................................................................................................................... 4-16 4-5.1.1 Visual Inspection (VT)............................................................................................................. 4-16 4-5.1.1.1 VT and Titanium Weld Appearance............................................................................... 4-16 4-5.1.2 Radiographic (RT), Magnetic-Particle (MT), Liquid-Penetrant (PT), and Ultrasonic (UT) Inspection. ............................................................................................................................................. 4-17 4-5.1.3 Acceptance Standards. ............................................................................................................. 4-17 4-5.2 Destructive Tests. .............................................................................................................................. 4-17 4-5.2.1 Transverse Weld Tension Tests. .............................................................................................. 4-17 4-5.2.2 All-Weld Metal Tension Tests. ................................................................................................ 4-17 4-5.2.2.1 Titanium Specimens. ...................................................................................................... 4-17
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