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ndice API -1104

GENERALPg. 1Referenced Publications. .Pg. 1Definition of terms....Pg. 2Specifications, welding equipment....Pg. 2

Filler metal specifications...Pg. 2Storage and handling of filler metals and fluxes.Pg. 2Shielding gases, storage and handling.Pg. 3

QUALIFICATION OF WELDING PROCEDURES FOR WELDSCONTAINING FILLER- METAL ADDITIVES PAG...........................................Pg. 3Procedure qualificationPg. 3RecordPg. 3Procedure specification...Pg. 3Process..Pg. 3Pipe and fitting materials.Pg. 3Diameter and wall thicknesses...Pg. 3

Joint design...Pg. 3Filler metal and number of beads..Pg. 3

Electrical characteristics. Pg. 3Flame characteristics...Pg. 6Position..Pg. 6Direction of welding..Pg. 6

Time between passes..Pg. 6Type and removal of line up clampPg. 6Cleaning and / or grinding...Pg. 6Pre and post heat treatment...Pg. 6Shielding gas and flow rate.Pg. 6Shielding FluxPg. 6Speed of travel..Pg. 6Essential variables Pg. 6Changes requiring requalification. Pg. 6Welding process or method of application.. Pg. 6Groups base metals Pg. 6Change in base metalsPg. 6Change in joint design.Pg. 6Change in positionPg. 6Change in wall- thickness Pg. 6Change in filler metal...Pg. 7Change in electrical characteristics.. Pg. 7Change in between passesPg. 7Change direction of welding Pg. 7Change in shielding gas and flow ratePg. 7Change in shielding flux. Pg. 7Change in range speed of travel.. Pg. 7Change preheat.. Pg. 7Change in ranges post-weld heat treatment ( pwht)..Pg. 7

Table 1- filler metal groups.Pg. 7

WELDING OF TEST JOINTS- BUTT WELDS.. Pg. 8Preparation of testing of welded joints- butt welds.Pg. 8Preparation of tensile-strength test .. .. Pg. 8Method the tensile-strength test specimen. Pg. 8Requirement of the tensile strength of the weld Pg. 8Preparation nick-break test.. .Pg. 8

Table 2- type and number of test specimens for procedure qualification test... Pg. 8Figure 3location of test butt-weld specimens for procedure qualification test. Pg. 9Method nick-break testPg. 9Requirement nick-break test..Pg. 9Preparation root - and face- bend test .Pg. 9Method the root- and face- bend specimen Pg. 9Requirements the bend test. .Pg. 9

Preparation side-bend test Pg. 13Method the side-bend test Pg. 13Requirement side-bend test.. Pg. 13

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WELDING OF TEST JOINTS- FILLET WELDSPg. 13Preparation testing of welded joints- fillet welds Pg. 15Method fillet-weld specimens.Pg. 15Requirements fillet weld..Pg. 15

QUALIFICATION OF WELDERS SINGLE QUALIFICATION........Pg. 15

Change from one welding processes...Pg. 15Change in the combination of welding processes. Pg. 15.Change in the direction of welding uphill or downhill.Pg. 15Change of filler metal classification.. Pg. 15Change outside-diameterPg. 15Change from wall-thickness...Pg. 16Change in position...Pg. 16Change in the joint design..Pg. 16

QUALIFICATION OF WELDERS MULTIPLE QUALIFICATIONPg. 16Change welding process Pg. 16Change in combination of welding processes.Pg. 16Change in the direction of welding uphill or downhill.Pg. 16Change of filler metal classification Pg. 16

Visual examination requirements Pg. 16When semiautomatic or automatic welding is used Pg. 16Destructive testing Pg. 18Sampling of test butt weldsPg. 18

Tensile-strength, nick-break, and bend-test procedure for butt weldsPg. 18Tensile-strength test requirements for butt welds..Pg. 18Nick- break test requirements for butt welds.. Pg. 18Bend test requirements for butt welds. Pg. 18Sampling of test filletPg. 18

Table 3 Type and number of butt- weld test specimens per welderfor welder qualification test and destructive testing of production welds Pg. 18

Test method and requirements for fillet weldsPg. 19Radiography-butt welds only. Pg. 19Inspection requirements for radiographs.Pg. 19

Retesting records.Pg. 19

DESIGN AND PREPARATING OF A JOING FOR PRODUCTION WELDING.The joint design and spacing between abutting endsPg. 19Alignment of abutting end shall minimize the offset Pg. 19Use of lineup clamp for butt weldsPg. 19Bevel..Pg. 19Mill bevel (bisel de fabrica).Pg. 19.Field bevel.Pg. 19Weather conditions Pg. 19Clearance..Pg. 19Clearing between beads Pg. 20Position welding Pg. 20Procedure position weldingPg. 20

Filler and finish beads Pg. 20Roll welding. Pg. 20Alignment of roll welding Pg. 20Filler and finish beads Pg. 20Identification of welds. Pg. 20Pre- and post-heat treatment.Pg. 20

INSPECTION AND TESTING OF PRODUCTION WELDSWho determines the type inspection?.............................................................. .Pg. 20Who determines the frequency inspection?...................................................... Pg. 20Methods of inspection.Pg. 20.Qualification of inspection personnelPg. 20Documentation of inspection personnel...Pg. 21Certification of nondestructive testing personnelPg. 21ProceduresPg. 21Records..Pg. 21How often must level (?) nondestructive testing personnel be re certified?.......Pg. 21

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ACEPTANCE STANDAR FOR NONDESTRUCTIVE TESTINGRights of rejectionPg. 21Radiographic testingPg. 21Inadequate penetration without high-low.Pg. 21Inadequate penetration due to high-low..Pg. 21

Inadequate cross penetrationPg. 22Incomplete fusion.Pg. 22Incomplete fusion due to cold lap..Pg. 22Internal concavity.Pg. 22Burn-through (BT)Pg. 22Slag inclusions.Pg. 22Porosity.Pg. 22Cracks Pg. 22Undercutting.Pg. 22Accumulation of imperfections. Pg. 24Pipe or fitting imperfections.. Pg. 27Magnetic particle testing Pg. 27Classification of indicationsPg. 27Acceptance standardsPg. 27

Pipe or fitting imperfectionsPg. 27Liquid penetrant testing Pg. 27Classification of indicationsPg. 27Acceptance standards.Pg. 27Pipe or fitting imperfectionsPg. 27Ultrasonic testing..Pg. 27Classification of indicationsPg. 27Linear indications, transverse indication, Relevant indicationsPg. 28Acceptance standards Pg. 28Pipe or fitting imperfections.. Pg. 28Visual acceptance standards for undercutting Pg. 28Acceptance standards.Pg. 28Repair and removal of defects Pg. 29Authorization for repairPg. 29

Defects other than cracks Pg. 29Repair procedure. Pg. 29Acceptance criteria Pg. 29SupervisionPg. 29WelderPg. 29PROCEDURES FOR NONDESTRUCTIVE TESTING Pg. 29Radiography test methods Pg. 29Details of procedure Pg. 30Film radiography Pg. 30Other imaging mediaPg. 30Exposure geometry .Pg. 30Film radiography. Pg. 30Other imaging media.. Pg. 31

Type of penetrameters Pg. 31

Selection of penetrameter.. Pg. 31Hole type penetrameters Pg. 31Wire type penetrameter.. Pg. 31

Table 5 .Thickness of ASTM E-1025 penetrameter.. Pg. 31Table 6- thickness of pipe versus thickness of penetrameter.. Pg. 32Table 7- thickness of pipe versus diameter of ASTM E-747 wire penetrameterPg. 32Placement of penetrameterPg. 33Film.Pg. 33Other imaging media Pg. 33Production radiographyPg. 33Identification of imagesPg. 33Storage of film and other imaging media. Pg. 33.Film Pg. 33Other imaging media.. Pg. 33Film density.. Pg. 33Film viewing equipment (negatoscopio).. Pg. 34Film viewing facilities.. Pg. 34

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Image processing Pg. 34Por cuanto tiempo se guarda una radiografa.. Pg. 34Image processing area.. Pg. 34Radiation protectionPg. 34Magnetic particle test method.. Pg. 34ASTM E-709 Pg. 34Liquid penetrant test method Pg. 34

ASTM E-165 Pg. 34Ultrasonic test methods. Pg. 34E-164 Pg. 34What conditions must be considered when using ultrasonic testing on in service welds Pg.34Details of procedurePg. 34Ultrasonic procedure Pg. 34Ultrasonic testing personnel requirements Pg. 35Ultrasonic testing personnel level II or level III. Pg. 35Qualification of the testing procedure. Pg. 35API sensitivity reference standardPg. 35Parent material ultrasonic testing. Pg. 35Scanning and evaluation level.. Pg. 35Parent material ultrasonic testing. Pg. 36

Manual ultrasonic weld testing. Pg. 36Automated ultrasonic weld testingPg. 37Production ultrasonic testing. Pg. 37Identification of reported indication...Pg. 37

AUTOMATIC WELDING WITH FILLER METAL ADDITIONS.. Pg. 37Acceptable processes Pg. 37Procedure qualification.. Pg. 38Record.. Pg. 38Procedure specification. Pg. 38Specification informationPg. 38Process.Pg. 38Pipe and fitting materialsPg. 38Diameter Pg. 38

Wall-thickness group and number and sequence of bead Pg. 38Joint design..Pg. 38Filler metalPg. 38Electrical characteristics Pg. 38Position Pg. 38Direction of welding.Pg. 38

Time between passes.Pg. 38Type of lineup clamp.. Pg. 38CleaningPg. 38Preheat treatmentPg. 38Post-heat treatment.Pg. 39Shielding gas and flow ratePg. 39Shielding fluxPg. 39Speed of travel.Pg. 39

Other factors Pg. 39Essential variables. Pg. 39Changes requiring requalification.Pg. 39Welding process Pg. 39Pipe material.. Pg. 39

Joint design. Pg. 39Wall thickness..Pg. 39Pipe diameter Pg. 39Filler metal.Pg. 39Size of filler-metal wirePg. 39

Time between passes.Pg. 39Direction of welding.Pg. 40Shielding gas and flow ratePg. 40Shielding fluxPg. 40Speed of travel.Pg. 40Pre and post heat treatment requirements. Pg. 40.Electrical characteristics.... Pg. 40

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Orifice diameter or orifice gas composition.Pg. 40Qualification of welding equipment and operatorPg. 40Records of qualified operators Pg. 40Inspection and testing of production welds Pg. 40Acceptance standards for nondestructive testing...Pg. 40Repair and removal of defects Pg. 40Radiography testing.. Pg. 40

AUTOMATIC WELDING WITHOUT FILLER METAL ADDITIONSFLASH BUTT WELDING PROCESSSPg. 40Procedure qualificationPg. 40Radiography prior to mechanical testing..Pg. 41Mechanical testing of butt-welded joints..Pg. 41

Tensile-strength test preparation, method, requirements..Pg. 41Nick-break test preparation, method, requirements.. Pg. 41Side-bend test preparation, method, requirementsPg. 41

Table-type and number of test specimens for procedure qualification test (flash weld only)Pg. 41Record Pg. 46Procedure specification. Pg. 46Essential variables..Pg. 46

Changes requiring requalification Pg. 46Qualification of equipment and operatorsPg. 46Records of qualified operators. Pg. 46Quality assurance of production weldsPg. 46Rights of inspection Pg. 46Rejection based on strip chart. Pg. 46Rejection based on nondestructive testing Pg. 47Rejection based on reinforcement Pg. 47Defects.. Pg. 47Repair and removal of defects.. Pg. 47Radiography procedure. Pg. 47

APPENDIX A- ALTERNATIVE ACCEPTANCE STANDARD FOR GIRTH WELDSAdditional requirements for stress analysis Pg. 49

Axial design stress Pg. 49Cyclic stress Pg. 49Analysis.. Pg. 49Environmental effects on fatigue Pg. 50Sustained-load cracking.. Pg. 50Dynamic loading. Pg. 50Welding procedure. Pg. 50Fracture toughness testing... Pg. 51CTODPg. 51Figure A-1- Location of CTOD test specimens Pg. 51Figure A-2 Machining objective for CTOD test specimen with respect to respect to pipewall..Pg. 52Figure A-3- Location of notch for weld-metal specimen Pg.52

Figure A-4- Location of notch for heat-affected zone specimen.. Pg.52Figure A-5 alternative acceptance criteria for circumferential planar imperfectionsPg. 52CTOD TESTING FOR PROCEDURE QUALIFICATION. Pg. 54Qualification of welders. Pg. 54Inspection and acceptable limits . Pg. 54Planar imperfections.. Pg. 54Volumetric imperfections.. Pg. 54

Table A-1- acceptance limits for buried volumetric imperfections. Pg.54Arc burns. Pg. 55Imperfection interaction.. Pg. 55RecordPg. 55Example description Pg. 55Calculations and acceptance criteria (step 1,2, 34)Pg. 55

Table A-2-acceptance limits for unrepaired arc burns.. Pg. 55

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Figure A-6-criteria for evaluation of imperfection interactionPg.56Evaluation of imperfectionsPg. 57

Table A-3- imperfections length limits. Pg. 55Evaluation of imperfections.. Pg. 55Fig A-7 length limit for deep imperfections in heavy- wall pipePg.58

Table A-4- allowable imperfections, dimensions for example Pg.58

Table A-5 acceptable planar imperfection dimensions for example Pg.58

Table A-6 example alternative acceptance criteria.Pg. 59Repairs Pg. 59Nomenclature.Pg. 59Figure A Dimensions of dimensions of surface and buried in imperfectionsPg. 59

APPENDIX B IN SERVICE WELDING..Pg. 61General.. Pg. 61

Figure B-1 examples of typical temper-bend deposition sequencesPg.61Qualification of in service welding procedures.. Pg. 62Procedure specificationPg. 62Specification information..Pg. 62Pipe and fitting materials..Pg. 62Pipeline operating conditions Pg. 62Heat input range.Pg. 62Weld deposition secuencePg. 62Essential variables.Pg. 62Changes requiring requalificationPg. 62Pipe and fitting materialPg. 62Pipeline operating conditions Pg. 62Pipe wall thicknessPg. 62

Weld deposition sequence.. Pg. 62Welding of test joints Pg. 62Testing of welded joints preparation. Pg. 62Longitudinal seam welds. Pg. 62Branch and sleeve welds. Pg. 63Macro-section test-branch and sleeve welds preparation.. Pg.63Visual examination Pg. 63Hardness testingPg. 63Requirements.Pg. 63Face bends test-branch and sleeve welds preparation Pg.63Method.Pg. 63Requirement Pg. 63

In service welder qualification Pg. 63Welding of test assembly. Pg. 63Testing of weld Pg. 63Records Pg. 64Suggested in service welding practices Pg. 64Alignment, fit up Pg. 64

Table B-1 type and number of specimens-in service welding Procedure qualification testPg. 65Root opening-longitudinal seam welds.. Pg. 65Welding sequence. Pg. 66Inspection and testing of in service welds. Pg. 66Standards of acceptability nondestructive testing (including visual).Pg. 67Repair and removal of defects. Pg. 67

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