NOTE 7- WELDER TEST- MECHANICAL TEST AND X-RAY.ppt

7/25/2019 NOTE 7- WELDER TEST- MECHANICAL TEST AND X-RAY.ppt

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FWD 22403FWD 22403 WELDING PROCEDURE SPECIFICATION WELDING PROCEDURE SPECIFICATION

Welder Qualifica i!" Welder Qualifica i!"

C!#$iled % Pre$aredC!#$iled % Pre$ared

&'&'

(a)a#ad N!!r(a)a#ad N!!r


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Visual InspectionVisual InspectionQW-194 Visual Examination QW-194 Visual Examination PerformancePerformance

Performance test coupons shall showPerformance test coupons shall showcomplete jointcomplete jointpenetration with complete fusion ofpenetration with complete fusion of

weld metal and base metalweld metal and base metal

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!end test!end testQW-141 " #uided-!end $estsQW-141 " #uided-!end $ests#uided-bend tests as#uided-bend tests asdescribed in QW-1%& are used todescribed in QW-1%& are used todetermine the de'ree of soundnessdetermine the de'ree of soundnessand ductilit( of 'roo)e-weld jointsand ductilit( of 'roo)e-weld joints

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$est *oupon-Plate $est *oupon-Plate

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$est coupon-Pipes $est coupon-Pipes

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+ssembl( Production line+ssembl( Production line

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+cceptance-bend test+cceptance-bend test $he weld and heat-a,ected one of a trans)erse weld $he weld and heat-a,ected one of a trans)erse weldbend specimen shall be completel( within the bentbend specimen shall be completel( within the bentportion of the specimen after testin'portion of the specimen after testin'

$he 'uided-bend specimens shall ha)e no open $he 'uided-bend specimens shall ha)e no opendiscontinuit( in the weld or heat-a,ected onediscontinuit( in the weld or heat-a,ected oneexceedin' 1./ in 0 mm23 measured in an( directionexceedin' 1./ in 0 mm23 measured in an( directionon the con)ex surface of the specimen after bendin'on the con)ex surface of the specimen after bendin'

pen discontinuities occurrin' on the corners of thepen discontinuities occurrin' on the corners of thespecimen durin' testin' shall not be consideredspecimen durin' testin' shall not be consideredunless there is de5nite e)idence that the( result fromunless there is de5nite e)idence that the( result fromlac6 of fusion3 sla' inclusions3 or other internallac6 of fusion3 sla' inclusions3 or other internaldiscontinuitiesdiscontinuities7or corrosion-resistant weld o)erla( claddin'3 no open7or corrosion-resistant weld o)erla( claddin'3 no opendiscontinuit( exceedin' 1.1% in 01 8 mm23 measureddiscontinuit( exceedin' 1.1% in 01 8 mm23 measuredin an( direction3 shall be permitted in the claddin'3in an( direction3 shall be permitted in the claddin'3and no open discontinuit( exceedin' 1./ in 0 mm2and no open discontinuit( exceedin' 1./ in 0 mm2shall be permitted alon' the approximate weldshall be permitted alon' the approximate weldinterfaceinterface


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adio'raphic examinationadio'raphic examinationTT he minimum len'th of coupon0s2 to be examinedhe minimum len'th of coupon0s2 to be examinedshall be % in 018& mm2shall be % in 018& mm2

$he entire weld circumference for pipe0s23 except $he entire weld circumference for pipe0s23 exceptthat for small diameter pipe3 multiple couponsthat for small diameter pipe3 multiple couponsma( be re:uired3 but the number need notma( be re:uired3 but the number need notexceed four consecuti)el( made test couponsexceed four consecuti)el( made test coupons

$he radio'raphic techni:ue and acceptance $he radio'raphic techni:ue and acceptancecriteria shall be in accordance with QW-191criteria shall be in accordance with QW-191

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+cceptance criteria-radio'raphic+cceptance criteria-radio'raphicexaminationexaminationQW-191.2.2 Acceptance Standards.QW-191.2.2 Acceptance Standards.

Welds in test assemblies shall be jud'ed unacceptable when theWelds in test assemblies shall be jud'ed unacceptable when theradio'raph exhibits an( imperfections in excess of the limitsradio'raph exhibits an( imperfections in excess of the limitsspeci5ed belowspeci5ed below(a) Linear Indications(a) Linear Indications

(1) any type of crack or zone of incomplete fusion(1) any type of crack or zone of incomplete fusion or penetrationor penetration

(2) any elongated slag inclusion which has a length(2) any elongated slag inclusion which has a length 'reater than'reater than(a) 18 in. ( mm) for t up to 8 in. (1! mm)"(a) 18 in. ( mm) for t up to 8 in. (1! mm)" inclusi)einclusi)e(#) 1 t for t o$er 8 in. (1! mm) to 21% in. (&' mm)"(#) 1 t for t o$er 8 in. (1! mm) to 21% in. (&' mm)" inclusi)einclusi)e(c) % in. (1 mm) for t o$er 21% in. (&' mm)(c) % in. (1 mm) for t o$er 21% in. (&' mm)

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QW-191.2.2 Acceptance Standards.QW-191.2.2 Acceptance Standards.( ) any group of slag inclusions in line that ha$e( ) any group of slag inclusions in line that ha$e an a''re'atean a''re'atelen'th 'reater thanlen'th 'reater than t in a length of 12t" e ceptt in a length of 12t" e cept when thewhen thedistance between the successi)e imperfectionsdistance between the successi)e imperfectionsexceeds %exceeds % L where L is the length of the longest imperfectionL where L is the length of the longest imperfection

in the 'roupin the 'roup(#) *ounded Indications(#) *ounded Indications

(1) +he ma imum permissi#le dimension for(1) +he ma imum permissi#le dimension for rounded indicationsrounded indicationsshall be "&; ofshall be "&; of t or 18 in. ( mm)"t or 18 in. ( mm)" whiche)er is smallerwhiche)er is smaller2) ,or welds in material less than 18 in. ( mm) in2) ,or welds in material less than 18 in. ( mm) in thic6ness3thic6ness3

the maximum number of acceptable rounded indications shallthe maximum number of acceptable rounded indications shallnot exceed 1" in a % in 018& mm2 len'th of weldnot exceed 1" in a % in 018& mm2 len'th of weld

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ounded


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ounded


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ounded


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QW-321 RetestsQW-321 Retests+ welder or weldin' operator who fails one or+ welder or weldin' operator who fails one ormore of the tests prescribed in QW- &4 or QW-more of the tests prescribed in QW- &4 or QW-

&83 as applicable3 ma( be retested under the&83 as applicable3 ma( be retested under thefollowin' conditionsfollowin' conditionsQW- "1 1 echanicalQW- "1


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QW-321.1 Immediate Retest UsingQW-321.1 Immediate Retest Using

Visual !amination.Visual !amination.When the :uali5cation coupon has failed the )isualWhen the :uali5cation coupon has failed the )isualexamination of QW- &" 43 retestin' shall be b( )isualexamination of QW- &" 43 retestin' shall be b( )isualexamination before conductin' the mechanical testin'examination before conductin' the mechanical testin'


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QW-321.2 Immediate RetestQW-321.2 Immediate RetestUsing "ec#anical.Using "ec#anical.When the :uali5cation coupon has failedWhen the :uali5cation coupon has failed

the mechanical testin' of QW- &" 13the mechanical testin' of QW- &" 13retestin' shall be b( mechanical testin'retestin' shall be b( mechanical testin'When an immediate retest is made3 theWhen an immediate retest is made3 thewelder or weldin' operator shall ma6e twowelder or weldin' operator shall ma6e twoconsecuti)e test coupons for each positionconsecuti)e test coupons for each positionwhich he has failed3 all of which shall passwhich he has failed3 all of which shall passthe test re:uirementsthe test re:uirements

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QW- "1


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(#) -t the option of the manufacturer" the welder who(#) -t the option of the manufacturer" the welder who

hashas

failed the production weld alternati)e test ma( be retested b(failed the production weld alternati)e test ma( be retested b(radio'raphin' an additional twice the re:uired len'th orradio'raphin' an additional twice the re:uired len'th ornumber of pipe circumferences of the same or consecuti)el(number of pipe circumferences of the same or consecuti)el(made production weld0s2 speci5ed in QW- &4 1made production weld0s2 speci5ed in QW- &4 1


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QW-321.$ %urt#er Training.QW-321.$ %urt#er Training.W#en t#e &elderW#en t#e &elder

TT he weldin' operator has had further trainin' orhe weldin' operator has had further trainin' orpractice a new test shall be made for eachpractice a new test shall be made for eachposition on which he failed to meet theposition on which he failed to meet there:uirementsre:uirements

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QW-322.1 !piration o'QW-322.1 !piration o'Quali(cation. T#e per'ormanceQuali(cation. T#e per'ormance

(2) a welding operator has welded with a machine(2) a welding operator has welded with a machine

or automatic weldin' process that will maintainor automatic weldin' process that will maintainhis :uali5cation for machine and automatichis :uali5cation for machine and automaticweldin' with that processweldin' with that process(#) hen there is a speci/c reason to 0uestion his(#) hen there is a speci/c reason to 0uestion his

abilit( to ma6e welds that meet the speci5cation3abilit( to ma6e welds that meet the speci5cation3the :uali5cations that support the weldin' he isthe :uali5cations that support the weldin' he isdoin' shall be re)o6ed +ll other :uali5cations notdoin' shall be re)o6ed +ll other :uali5cations not:uestioned remain in e,ect:uestioned remain in e,ect

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QW- "" " enewal of Quali5cationQW- "" " enewal of Quali5cation(a) *enewal of 0uali/cation e pired under(a) *enewal of 0uali/cation e pired under QW- "" 10a2 ma(QW- "" 10a2 ma(be made for an( process b( weldin' a sin'le test coupon ofbe made for an( process b( weldin' a sin'le test coupon ofeither plate or pipe3 of an( material3 thic6ness or diameter3either plate or pipe3 of an( material3 thic6ness or diameter3in an( position3 and b( testin' of that coupon as re:uired b(in an( position3 and b( testin' of that coupon as re:uired b(QW- &1 and QW- &"QW- &1 and QW- &"

+ successful test renews the welder or weldin' operator@s+ successful test renews the welder or weldin' operator@spre)ious :uali5cations for that process for those materials3pre)ious :uali5cations for that process for those materials3

thic6nesses3 diameters3 positions3 and other )ariables forthic6nesses3 diameters3 positions3 and other )ariables forwhich he was pre)iousl( :uali5ed Pro)idin' the conditions ofwhich he was pre)iousl( :uali5ed Pro)idin' the conditions ofQW- &4 and QW- &8 are satis5ed3 renewal of :uali5cationQW- &4 and QW- &8 are satis5ed3 renewal of :uali5cationunder QW- "" 10a2 ma( be done on production wor6under QW- "" 10a2 ma( be done on production wor6

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(#) elders and welding operators whose(#) elders and welding operators whose0uali/cations0uali/cations ha)e been re)o6ed underha)e been re)o6ed under

QW- "" 10b2 abo)e shall re:ualif(QW- "" 10b2 abo)e shall re:ualif(Quali5cation shall utili e a test couponQuali5cation shall utili e a test couponappropriate to the planned productionappropriate to the planned productionwor6 $he coupon shall be welded andwor6 $he coupon shall be welded and

tested as re:uired b( QW- &1 andtested as re:uired b( QW- &1 andQW- &" Auccessful test restores theQW- &" Auccessful test restores the:uali5cation:uali5cation

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$est coupon- 7illet joint $est coupon- 7illet joint $he dimensions and the preparation of the $he dimensions and the preparation of the5llet-weld test coupon for performance5llet-weld test coupon for performance

QW-4%" 40b2 or 5'ure QW-4%" 40c2QW-4%" 40b2 or 5'ure QW-4%" 40c2 $he test coupon for plate-to-plate shall be $he test coupon for plate-to-plate shall becut trans)ersel( to pro)ide a centercut trans)ersel( to pro)ide a centersection approximatel( 4 in 01&& mm2 lon'section approximatel( 4 in 01&& mm2 lon' $wo end sections3 each approximatel( 1 $wo end sections3 each approximatel( 1in 0"8 mm2 lon'in 0"8 mm2 lon'

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$est coupon- 7illet joint $est coupon- 7illet joint

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7racture test-+cceptance criteria7racture test-+cceptance criteria $he stem of the 4 in 01&& mm2 performance specimen center $he stem of the 4 in 01&& mm2 performance specimen centersection in 5'ure QW-4%" 40b2section in 5'ure QW-4%" 40b2

$he :uarter section in 5'ure QW-4%" 40c2 shall $he :uarter section in 5'ure QW-4%" 40c2 shall

be loaded laterall( in such a wa( that the root of the weld is inbe loaded laterall( in such a wa( that the root of the weld is intensiontension $he load shall be steadil( increased until the specimen fractures $he load shall be steadil( increased until the specimen fracturesor bends Bat upon itself


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$est coupon-Pipe to plate $est coupon-Pipe to plate7or pipe-to-plate or pipe-to-pipe3 the test7or pipe-to-plate or pipe-to-pipe3 the testcoupon shall be cut to pro)ide two :uartercoupon shall be cut to pro)ide two :uarter

sections test specimens opposite to eachsections test specimens opposite to eachotherotherne of the test specimens shall be fracturene of the test specimens shall be fracture

tested in accordance with QW-1/"tested in accordance with QW-1/" $he other macro examine to the $he other macro examine to there:uirements of QW-1/4re:uirements of QW-1/4

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$est coupon- Pipe to plate $est coupon- Pipe to plate

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+cceptance criteria >acro+cceptance criteria >acro

In order to pass the test (a)In order to pass the test (a) )isual examination of)isual examination ofthe cross section of the weld metal and heat-the cross section of the weld metal and heat-a,ected one shall show complete fusion anda,ected one shall show complete fusion andfreedom from crac6s3 except that linearfreedom from crac6s3 except that linearindications at the root not exceedin' 1. " in 0& /indications at the root not exceedin' 1. " in 0& /mm2 shall be acceptablemm2 shall be acceptable(#)(#) the weld shall not ha)e a conca)it( orthe weld shall not ha)e a conca)it( orcon)exit( 'reater than 1.1% in 01 8 mm2con)exit( 'reater than 1.1% in 01 8 mm2(c)(c) there shall be not more than 1./ in 0 mm2there shall be not more than 1./ in 0 mm2di,erence in the len'ths of the le's of the 5lletdi,erence in the len'ths of the le's of the 5llet

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NOTE 7- WELDER TEST- MECHANICAL TEST AND X-RAY.ppt