S9074-AQ-GIB-010/248 Rev 1
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4-2.4.1 Approval Letters of Subcontractors. ...........................................................................................4-2 4-2.5 Approval of Procedure Qualification for Special Welds......................................................................4-3 4-2.6 Waiver of Qualification........................................................................................................................4-3 4-2.7 Qualification Levels. ............................................................................................................................4-3 4-2.7.1 General........................................................................................................................................4-3 4-2.7.2 Level I. ........................................................................................................................................4-3 4-2.7.3 Level II. ......................................................................................................................................4-3 4-2.7.3.1 Level II Qualification Testing. ..........................................................................................4-4 4-2.7.3.2 Submittals and Qualification Test Report Approval Exemptions. ....................................4-4 4-2.7.3.2.1 Noncompliance and Reinstatement of Required Approval. ................................................... 4-5 4-2.8 Welding Position Qualification Limits. ...............................................................................................4-5 4-2.9 Repair of Test Assembly. .....................................................................................................................4-5 4-2.10 Transfer of Welding Procedure Qualification. ...................................................................................4-5 4-2.10.1 Procedure Transfer Within an Activity.....................................................................................4-5 4-2.10.2 Naval Shipyard Procedure Transfer..........................................................................................4-5 4-2.10.3 Technical Manual Welding Procedure Usage. .........................................................................4-5 4-3 Written Welding Procedure. ..........................................................................................................................4-6 4-3.1 Essential Elements of a Welding Procedure. .......................................................................................4-6 4-3.1.1 Identification of S-23 Welding Procedure Applicability. ...........................................................4-6 4-3.2 Welding Procedure Intent.....................................................................................................................4-6 4-4 Specific Qualification Requirements. ............................................................................................................4-6 4-4.1 Groove Welds and Fillet Welds (for Temperature Control Areas, Also See 4.4.10)...........................4-6 4-4.1.1 Base Material. .............................................................................................................................4-6 4-4.1.2 Test Assembly Size. ...................................................................................................................4-6 4-4.1.3 Test Assembly Joint Design. ......................................................................................................4-6 4-4.1.3.1 Dissimilar Metal Welds.....................................................................................................4-6 4-4.1.3.1.1 Dissimilar Metal Joints Involving Metallic Backing (Permanent or Temporary).................. 4-7 4-4.1.4 Test Assembly for Qualification of Root Deposition. ................................................................4-7 4-4.1.5 Material Thickness Qualification Limits. ...................................................................................4-7 4-4.1.6 PWHT. ........................................................................................................................................4-7 4-4.1.7 Joint Design Qualification Limits...............................................................................................4-7 4-4.1.7.1 Single Pass Welding..........................................................................................................4-7 4-4.1.8 Evaluation of Procedure Qualification Test Results...................................................................4-7 4-4.1.9 Use of Qualified Groove Butt Weld Procedures for Repair, Buttering, and Build-Up. .............4-7 4-4.1.10 Qualification Requirements for Automatic, Mechanized, and Robotic Welding. ....................4-7 4-4.1.10.1 Pipe..................................................................................................................................4-7 4-4.1.10.1.1 Flat Position Longitudinal Welds in Pipe 2-7/8 Inches OD and Greater, and Flat Position Girth Welds in Pipe Over 24 Inches OD................................................................................................... 4-8 4-4.1.10.2 Plate.................................................................................................................................4-8 4-4.1.10.3 Robotic Welding. ............................................................................................................4-8 4-4.1.10.3.1 Automatic Robotic Welding. ............................................................................................... 4-8 4-4.1.10.4 Special Automatic, Mechanized, and Robotic Welds. ....................................................4-9
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