API Standard 1104

1 API Weldi TWENTY-FIThis standahigh-qualityusing approequipment. This standaand socket used in the crude petrodioxide, nitrdistribution and in-servishielded metungsten ararc weldingflash butt-wprocesses uor or bThis standathe proper aqualified tecequipment. magnetic paas well as thproduction wradiographiultrasonic, aWhile this stissues that mrequirementparticular acengineering standards, restablished to establish Stanng of PRST EDITIONrd presents mwelds througoved welding p rd covers the welds in carbocompression,leum, petroleurogen, and whsystems. It apce welding. Thetal arc weldinc welding, gas, plasma arc wwelding procesusing a manuac welding tech. The welds maby a combinatrd also presenanalysis of wechnicians and It covers the article, liquid phe acceptancewelds tested tc, magnetic paand visual testtandard is commay arise.

2 The ts is not to be cctivity or approajudgment. For reliable engineeindustry practisound engineendardPipeline | SEPTEMBER methods for theh the use of qprocedures, mgas and arc won and low-all pumping, andum products, fere applicablepplies to both he welding mang, submergeds metal arc wewelding, oxyacs or by a combal, semiautomhnique or a coay be produceion of positionnts inspection lding quality th approved meprocedures fopenetrant, ande standards toto destruction article, liquid pting , it absence of guconsidered proach that is basexample, otheering tests andces may providering judgmentd 11s and RR 2013 | 118 PAe production oualified weldeaterials, and welding of buttoy steel pipingd transmissionfuel gases, cae, covers weldnew constructay be done by d arc welding, elding.

3 Flux-coretylene weldinbination of theatic, mechanizombination of ted by position n and roll weldmethods to ehrough the usethods and or radiographicd ultrasonic teo be applied toor inspected bpenetrant, may not addreuidance or ohibitive to a sed upon sounder industry d analyses, or de useful refert. 04 RelatedAGES | $ ers , fillet, g n of rbon ing on tion a gas ed ng, or ese zed, these or roll ing. ensure e of c, esting, o by ess all d ence For Onl Pho Fax APId Facilit0 | PRODUCT Nr ordering inforline: : 1-800-8(Toll-free(+1) 303(Local anx: (+1) 303I members receties NO. D110421 rmation: 54-7179 e in the an3-397-7056 nd Internationa3-397-2740 eive a 30% disd Canada) al) scount where aapplicable. ContentsPage1 Scope .. 12 Normative References.

4 13 Terms, Definitions, Acronyms, and Abbreviations .. Terms and Definitions .. Acronyms and Abbreviations .. 54 Specifications .. Equipment .. Materials .. 85 Qualification of Welding Procedures with Filler Metal Additions .. Procedure Qualification .. Record.. Welding Procedure Specification .. Essential Variables .. Welding of Test Joints Butt Welds .. Testing of Welded Joints Butt Welds .. Welding of Test Joints Fillet Welds.. Testing of Welded Joints Fillet Welds .. 236 Qualification of Welders.. General .. Single Qualification .. Multiple Qualification .. Visual Examination .. Destructive Testing .. Nondestructive Testing (NDT) Butt Welds Only.

5 Retesting.. Records.. 307 Design and Preparation of a Joint for Production Welding .. General .. Alignment .. Use of Lineup Clamp for Butt Welds .. Bevel .. Weather Conditions.. Clearance .. Cleaning Between Beads .. Position Welding .. Roll Welding .. Identification of Welds .. Preheat and PWHT .. 328 Inspection and Testing of Production Welds.. Rights of Inspection .. Methods of Inspection .. Qualification of Inspection Personnel.. Certification of NDT Personnel .. 339 Acceptance Standards for NDT .. General .. Rights of Rejection .. Radiographic Testing .. Magnetic Particle Testing .. Liquid Penetrant Testing.. Ultrasonic Testing.

6 Visual Acceptance Standards for Undercutting.. 4510 Repair and Removal of Weld Defects .. General .. Authorization for Repair .. Repair Procedure.. Repair Welder Qualification .. Supervision .. Acceptance Criteria .. 5411 Procedures for NDT.. Radiographic Test Methods .. Magnetic Particle Test Method.. Liquid Penetrant Test Method .. Ultrasonic Test Methods .. 6012 Mechanized Welding with Filler Metal Additions.. Acceptable Processes .. Procedure Qualification .. Record.. Welding Procedure Specification .. Essential Variables .. Qualification of Welding Equipment and Operators .. Records of Qualified Operators .. Inspection and Testing of Production Welds .. Acceptance Standards for NDT.

7 Repair and Removal of Defects .. Radiographic Testing .. Ultrasonic Testing .. 7113 Automatic Welding Without Filler Metal Additions .. Acceptable Processes .. Procedure Qualification .. Record.. Welding Procedure Specification .. Essential Variables .. Qualification of Equipment and Operators.. Records of Qualified Operators .. Quality Assurance of Production Welds.. Acceptance Standards for NDT .. Repair and Removal of Defects .. Radiographic Procedure.. 79 Annex A (normative) Alternative Acceptance Standards for Girth Welds .. 80 Annex B (normative) In-service Welding.. 102 Annex C (normative) Requests for Interpretation and Request for Revision to the Document .. 117 Figures1 Sample Welding Procedure Specification Form.

8 102 Sample Coupon Test Report .. 113 Location of Test Butt Weld Specimens for Procedure Qualification Test.. 174 Tension Test Specimen .. 195 Nick Break Test Specimen .. 206 Dimensioning of Imperfections in Exposed Weld Surfaces.. 217 Root and Face Bend Test Specimen: Wall Thicknesses Less Than or Equal to in. ( mm) .. 218 Jig for Guided-bend Tests .. 229 Side Bend Test Specimen: Wall Thicknesses Greater than in. ( mm) .. 2310 Location of Nick Break Test Specimens: Fillet Weld Procedure and Welder Qualification Test Welds .. 2411 Location of Nick Break Test Specimens: Fillet Weld Procedure and Welder Qualification Test Welds, Including Size-to-size Branch Connection Welder Qualification Test .. 2412 Location of Test Butt Weld Specimens for Welder Qualification Test.

9 2713 Inadequate Penetration Without High-low .. 3414 Inadequate Penetration Due to High-low .. 3515 Inadequate Cross Penetration .. 3516 Incomplete Fusion at Root of Bead or Top of Joint.. 3617 Incomplete Fusion Due to Cold Lap .. 3618 Internal Concavity .. 3619 Maximum Distribution of Gas Pockets: Wall Thickness (t) Less Than or Equal to in. ( mm) .. 3920 Maximum Distribution of Gas Pockets: Wall Thickness (t) Greater Than in. ( mm) .. 4021 Hardness Locations for Full Thickness Repair Procedure Qualification .. 5022 Hardness Locations for Partial Thickness Repair Procedure Qualification at Weld Centerline .. 5123 Hardness Locations for Cover Pass Repair Procedure at Weld Centerline .. 5124 Hardness Location for Back Weld Repair or Internal Partial Thickness Repair Procedure at Weld Centerline.

10 5225 Hardness Locations for Cover Pass Repair Procedure at Fusion Line .. 5226 Hardness Locations for Partial Thickness Repair at Fusion Line .. 5227 Reference Block for Manual Ultrasonic Testing .. 6428 Establishing Distance, Refracted Angle, and Velocity .. 6429 Transfer Procedure .. 6530 Location of Test Butt Weld Specimens for Flash Weld Procedure Qualification Test: Outside Diameter Greater Than 18 in. (457 mm) but Less Than or Equal to 24 in. (610 mm) .. 7231 Location of Test Butt Weld Specimens for Flash Weld Procedure Qualification Test: Outside Diameter Greater Than 24 in. (610 mm) but Less Than or Equal to 30 in. (762 mm) .. 7332 Location of Test Butt Weld Specimens for Flash Weld Procedure Qualification Test: Outside Diameter Greater Than 30 in.