asme sec. ix interpretations 27171

8/12/2019 ASME Sec. IX Interpretations 27171

1/95

ASME SECTION IX INTERPRETATIONS

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Inter$ret%ti"n: IX&''&()Subject: Section IX, Tack Welder Qualification

Date Issued: January 31, 1977ile: !"

Question: #ay a $elder be %ualified as a tack $elder if &is tack $elds $ere a 'art of anot&er$elder(s %ualification test cou'on or 'art of anot&er $eldin) 'rocedure %ualification test $&ic&

*et t&e intent of t&e +ode

-e'ly: T&e +ode re%uires t&at all $elders, .includin) tack $elders/, *ust be %ualified 'er

Section IX0

Inter$ret%ti"n: IX&'*&+

Subject: Section IX, QW2, lu4 +ored "rc Weldin)Date Issued: ebruary 27, 1975

ile: 6+772

Question: Does )as *etalarc $eldin) .8#"W/ in t&e 'rocedure %ualification and

'erfor*ance %ualification refer also to flu4 cored arc $eldin) .+"W/ If so, s&ould $elders be%ualified se'arately under bot& 'rocesses

-e'ly: lu4 cored arc $eldin) .+"W/ is 'er*issible under t&e +ode and is considered to

co*e under t&e *ore )eneral *et&od of $eldin) kno$n as )as *etalarc $eldin) .8#"W/0Welders do not &ae to be %ualified se'arately unless t&ere is a c&an)e in any of t&e ssential

;ariables0


2/95

Inter$ret%ti"n: IX&'*&'

Subject: Section IX, QW13.d/

Date Issued: June 7, 1975

ile !o: 6+75223

Question: QW1301.d/ 'er*its acce'tance of t&e tension test if t&e s'eci*en breaks in t&e

base *etal outside of t&e $eld or fusion line $&ere t&e stren)t& is not *ore t&an > belo$ t&e

s'ecified *ini*u* tensile stren)t& of t&e base *etal0 W&at are t&e re%uire*ents if t&e s'eci*enbreaks in t&e $eld or fusion line

-e'ly: If t&e tension test s'eci*en breaks in t&e $eld or fusion line, it s&all &ae a tensilestren)t& not less t&an t&at re%uired in QW1301.a/, .b/, or .c/0

VOLUME +*

Inter$ret%ti"n: IX&*&(*

Subject: Section IX, QW20=

Date Issued: Dece*ber =, 195

ile !o: 6+513=

Question .1/: ?er QW20=.a/, *ay t$o or *ore se'arate W?Ss .eac& 'ro'erly %ualified to

$eld t&e joint indiidually/ be used to $eld a sin)le 'roduction joint $it&out $ritin) a ne$ W?S

co*binin) t&e se'arate W?Ss into a sin)le W?S

-e'ly .1/: @es0

Question .2/: Does QW2110=.a/ 'er*it t&e referencin) of a se'arately %ualified W?S to coer

t&e root 'ass $eldin) of o'en root joints in anot&er W?S

-e'ly .2/: @es0

Inter$ret%ti"n: IX&*&+-

Subject: Section IX, QW3

Date Issued: Dece*ber =, 195

ile: 6+5=52

Question: Is +"W included $it& 8#"W in QW3

-e'ly: @es0


3/95

Inter$ret%ti"n: IX&*&)

Subject: Section IX, QW3Date Issued: !oe*ber 2=, 195A

ile: 6+5A219

Question: Is a $elder $&o is %ualified usin) )as *etalarc $eldin) .8#"W/ also %ualified for

flu4cored arc $eldin) .+"W/ or ice ersa, 'roided t&e ot&er ariables for 'erfor*ance%ualification re*ain unc&an)ed

-e'ly: @es0

VOLUME -'

Inter$ret%ti"n: IX&*&/)

Subject: Section IX, QW==0

Date Issued: January 3, 199ile: 6+59172

Question: If a W?S and ?Q- &ae been %ualified $it& filler *aterial 'urc&ased to an establis&ed'rocure*ent docu*ent, is it re%uired by QW==0 to re%ualify eac& ti*e t&at filler *aterial isreordered to t&e 'rocure*ent docu*ent

-e'ly: !o0

Inter$ret%ti"n: IX&*&/0Subject: Section IX, #ulti'rocess Qualification

Date Issued: January 3, 199

ile: 6+5937

Question: " %ualified .*ulti'le 'rocess/ W?S lists t&e follo$in): Dia*eter and 'i'e sc&edule B

A in0 Sc&0 44s .05A= in0 no*inal t&ickness/C 8T"W root 'ass B 01 in0 de'osit t&icknessCS#"W &ot and fill 'asses B 07A= in0 de'osit t&ickness0 " $elder 'erfor*ed a 'erfor*ance

%ualification test, usin) t&e aboe W?S0 "n ins'ector, usin) a ernier cali'er *easured t&e root'ass de'osit and deter*ined 012 in0 t&ickness &ad been de'osited by t&e 8T"W 'rocess, and

subse%uently rejected t&e 'erfor*ance test based on e4cessie de'osit by t&e 8T"W 'rocess0T&e cou'on $as radio)ra'&ed and, additionally, sidebend s'eci*ens $ere re*oed and tested0

6ot& *et all t&e Section IX re%uire*ents for 'erfor*ance %ualification0 Since t&ere are no

tolerances stated in any of t&e tables relatin) to $eldin) 'rocess de'osits or test cou'ons'eci*ens, does t&e +ode re%uire erification of t&e de'osit t&ickness of $eld*ents to t&e de)reecited aboe

-e'ly: !o0

Inter$ret%ti"n: IX&*&/Subject: Section IX, QW21A02.d/


ile: 6+593A1


4/95

Question: W&en obtainin) t&e c&e*ical analysis re%uired in QW21A02.d/ fro* t&e test cou'on

detailed in QW=A20, s&all t&e *ini*u* t&ickness %ualified be *easured fro* t&e fusion line sot&at t&e c&e*ical sa*'le included t&e effect of base *etal dilution in t&e de'osit

-e'ly: @es0

VOLUME -

Inter$ret%ti"n: IX&*&*/

Subject: Section IX, QW1101, QW=1

Date Issued: January 2, 1991ile: 6+932

Question .1/: "re t$o sin)le full 'late t&ickness s'eci*ens necessary to satisfy t&e re%uire*ents

of QW=1 $&en t&ey are 're'ared in accordance $it& QW1101.a/

-e'ly .1/: @es0

Question .2/: Is t&e %ualified t&ickness ran)e of QW=1 based on t&e as$eldedE cou'on

t&ickness, een t&ou)& t&e cou'on is subse%uently *ac&ined to less t&ickness, in order to obtain

'arallel surfaces

-e'ly .2/: @es0

Inter$ret%ti"n: IX&*&*'Subject: Section IX, QW2202.c/Date Issued: January 2, 1991

ile: 6+97=

Question: #ay 'ressure retainin) fillet $elds be %ualified by *eans ot&er t&an a )rooe $eld

test cou'on

-e'ly: !o

Inter$ret%ti"n: IX&*&0

Subject: Section IX, QW=201Date Issued: #arc& 7, 1991ile !o: 6+95A9

Question: Is a $elder $&o &as %ualified usin) a de'osit t&ickness of 09 in0 %ualified to $eld t&eentire t&ickness of a 3 in0 t&ick *aterial


5/95

-e'ly: @es0

Inter$ret%ti"n: IX&-&+-

Subject: Section IXC QW32202 B 4'iration and -ene$al of Qualifications of Welders

Date Issued: Fctober 7, 1991

ile !o 6+912A=

Question: #ay a $elder t&at &as %ualified on 2 in0 and A in0 dia*eter stainless steel 'i'e ,*aintain %ualification by *akin) one butt $eld on A in0 stainless steel 'i'e

-e'ly: @es0

Inter$ret%ti"n: IX&-&+*

Subject: QW=22 and QW=23C "lternate 6ase #aterials for Welder Qualification,

"!u*bersDate Issued: Fctober 7, 1991

ile !o: 91359

Question .1/: Is a $elder, $&o &as %ualified usin) *ild steel base *aterial ?!o0 1 to ?!o0 1

usin) eit&er 8#"W, 8T"W, or ?"W $eldin) 'rocesses and filler *etal AG"1, %ualified to

$eld austenitic stainless steel ?!o0 5 to ?!o0 5

-e'ly .1/: @es0

Question .2/: Is t&e "!u*ber an essential ariable for a $elder 'erfor*ance %ualification test

-e'ly .2/: !o0

Inter$ret%ti"n: IX&-&--

Subject: Section IXC QW32202 B 4'iration and -ene$al of Welder Qualification


ile !o: 6+91=2

Question .1/: Does a $elder $&o is %ualified for a )ien 'rocess for bot& )rooe and

corrosionresistant $eld *etal oerlay *aintain &is %ualification for )rooe $eldin) if, for *ore

t&an si4 *ont&s, t&e $elder only does corrosionresistant $eld *etal oerlay $eldin)

-e'ly .1/: @es0

Question .2/: Does t&e non+ode $eldin) $ork need to be e4a*ined by !D to *aintain t&e

$elderHs %ualification

-e'ly .2/: !o0

Question .3/: #ay a $elder *aintain &is %ualification by $eldin) on te*'orary attac&*ents

$it&out any !D


6/95

-e'ly .3/: @es0

VOLUME /-

Inter$ret%ti"n: IX&-&)-

Subject: QW20=.a/, +o*bination of Weldin) ?rocessesDate Issued: Se'te*ber 3, 1992ile !o: 9211

Question: #ay a sin)le set of $eld *etal i*'act test s'eci*ens be used to %ualify t$o or *ore'rocesses or 'rocedures

-e'ly: @es, 'roided $eld *etal fro* eac& 'rocess or 'rocedure is included in eac& s'eci*en0

Inter$ret%ti"n: IX&-&)/

Subject: QW=92, Definition of #ac&ine Weldin)

Date Issued: Se'te*ber 3, 1992ile !o: 921

Question: Is a 8#"W s'ot $eldin) 'rocess in $&ic& all ariables are 'reset, e4ce't for'lace*ent of t&e nole a)ainst t&e *aterial and actiation of t&e tri))er by t&e o'erator,

considered *ac&ine $eldin)

-e'ly: @es0

Inter$ret%ti"n: IX&-&))

Subject: QW210= and QW25, S'ecial ?rocessesDate Issued: Se'te*ber 3, 1992

ile !o: 921A5

Question .1/: "ccordin) to t&e 199 "ddenda of Section IX, are t&ere any su''le*entaryessential or nonessential ariables re%uired to be addressed in a W?S for t&e s'ecial 'rocessesdescribed in QW25

-e'ly .1/: !o0

Question .2/: "ccordin) to t&e 1991 "ddenda of Section IX, are t&ere any su''le*entaryessential or nonessential ariables re%uired to be addressed in a W?S for t&e s'ecial 'rocesses

described in QW210=

-e'ly .2/: !o0

Inter$ret%ti"n: IX&-&)0

Subject: QW3302 and QW=20=, illet Welds


7/95

Date Issued: Se'te*ber 3, 1992

ile !o: 92235

Question: W&en Section IX re%uires se'arate 'erfor*ance %ualification for fillet $elds on s*alldia*eter 'i'e, does t&e sa*e re%uire*ent a''ly to lon)itudinal fillet $elds .suc& as t&e

attac&*ent of )ussets in t&e lon)itudinal direction/

-e'ly: !o0

Inter$ret%ti"n: IX&-&)

Subject: QW3303 and QW=A109, S'ecial ?ositions for ?erfor*ance QualificationDate Issued: Se'te*ber 3, 1992

ile !o: 922A

Question: Is a $elder $&o is %ualified to $eld )rooe $elds in a s'ecial orientation, also%ualified to $eld in t&e 18 'osition

-e'ly: @es0

Inter$ret%ti"n: IX&-&)'Subject: QW32202, -ene$al of Qualification

Date Issued: Se'te*ber 3, 1992ile !o: 922AA

Question: #ay t&e rene$al of $elder and $eldin) o'erator 'erfor*ance %ualification be done on

'roduction $ork

-e'ly: @es0

Inter$ret%ti"n: IX&-&)*

Subject: QW=AA, Test Ji)sDate Issued: Se'te*ber 3, 1992ile !o: 922A7

Question: In deter*inin) t&e a''ro'riate test ji) di*ensions of QW=AA to use for bend tests, is

it 'er*issible to use t&e di*ensions corres'ondin) to ?!o0 3 *aterial $&en t&e filler *etal is a

!o0 3A, een t&ou)& t&e base *aterial is ot&er t&an a ?!o0 3 *aterial

-e'ly: !o0


Subject: QW=AA, Test Ji)sDate Issued: Se'te*ber 3, 1992ile !o: 922A5

Question: In %ualifyin) a $eldin) 'rocedure $&ic& utilies a !o0 3A filler of - +u"l"1.S" 07/ for corrosion resistant $eld *etal oerlay of a ?!o0 1 carbon steel *aterial, is t&e


8/95

re%uired *andrel dia*eter for side bend testin) =t as deter*ined fro* colu*n " of QW=AA01,

QW=AA02 or QW=AA03

-e'ly: @es0

Inter$ret%ti"n: IX&-&0(Subject: QW=30A, 6ase #etalsDate Issued: Se'te*ber 3, 1992

ile !o: 92217

Question: If


9/95

Question: " $elder &as %ualified on 3 in0 F0D0 L in0 $all 'i'e in t&e 18 'osition0


10/95

Question: "ccordin) to t&e 199 "ddenda of Section IX, is it 'er*issible to reise a W?S by

increasin) inter'ass te*'erature to *ore t&an 1O aboe t&at recorded on t&e su''ortin) ?Q-$&en su''le*entary essential ariables do not a''ly $it&out re%ualification

-e'ly: @es0

Inter$ret%ti"n: IX&-&0*

Subject: QW3A=, riction Weldin)Date Issued: Dece*ber 1=, 1992

ile !o: 9237

Question: or 'erfor*ance %ualification, is a friction $eld o'erator re%uired to re%ualify for eac&

seat sie and base *etal co*bination to be %ualified to o'erate t&e *ac&ine

-e'ly: @es0

VOLUME //

Inter$ret%ti"n: IX&-&0

Subject: QW3A, +o*bination of Weldin) ?rocessesC QW=201 and QW=203,?erfor*ance Qualification T&ickness Ki*its and Test S'eci*ens

Date Issued: ebruary 22, 1993

ile !o: 922A

6ack)round: T&e co*bination of $eldin) 'rocesses and 'i'e dia*eters listed belo$ $ere used

for 'erfor*ance %ualification:

.1/ 2 in0 Sc&0 5 .0215/ 'i'e $it& o'en butt usin) 8T"W 'rocess0

.2/ 2 in0 Sc&0 1A .03=3/ 'i'e $it& consu*able insert and fill 'ass usin) t&e 8-"W 'rocessand t&e re*ainder $elded $it& S#"W 'rocess0

.3/ A in0 XXS .05A=/ usin) S#"W 'rocess $it& backin)0Question: Psin) t&e co*binations listed in t&e 6ack)round, in accordance $it& QW3A, !ote 2of QW=201 to deter*ine *a4i*u* t&ickness %ualified, and QW=203 for *ini*u* dia*eter

%ualification, is t&e $elder %ualified to $eld on unli*ited t&ickness and dia*eters aboe 1 in0,

usin) eit&er an o'en butt joint or a consu*able insert $it& t&e root layer de'osited $it& t&e8T"W 'rocess and t&e re*ainder de'osited $it& t&e S#"W 'rocess

-e'ly: @es0

Inter$ret%ti"n: IX&-&(

Subject: QW21=, +orrosion-esistant Weld #etal FerlayDate Issued: ebruary 22, 1993

ile !o: 92=21

Question: W&en corrosionresistant $eld *etal oerlay is de'osited in a base *aterial )rooe toa de't& t&at is not included in t&e desi)n calculations, *ust t&e de'osit be tested as a )rooe$eld


11/95

-e'ly: !o0

Inter$ret%ti"n: IX&-&+

Subject: Section II, ?art +C S"013, S'ecification for Solid Surfacin) Weldin) -ods

and lectrodesDate Issued: ebruary 22, 1993ile !o: 92=22

Question: #ay 'o$dered filler *etal be classified under Section II, ?art +, S" 013

-e'ly: !o0

Inter$ret%ti"n: IX&-&-Subject: QW=502, S&ieldin) 8as

Date Issued: ebruary 22, 1993

ile !o: 92=2

Question .1/: W&en c&an)in) s&ieldin) )ases of a s'ecific *i4ture, is it 'er*issible to adjust t&e

no*inal 'ercenta)e.s/ of t&e *inor co*'onent.s/ by G 2> $it&out re%ualifyin) t&e 'rocedure

-e'ly .1/: !o0

Question .2/: In addition, $&en t&e absolute alue of G 2> ti*es t&e no*inal 'ercenta)e of a*inor co*'onent is less t&an 1>, $ould it be 'er*issible to *ake a G 1> adjust*ent to t&e )as

*i4ture

-e'ly .2/: !o0

Inter$ret%ti"n: IX&-&/

Subject: QW1301, Tensile Stren)t&

Date Issued: ebruary 22, 1993ile !o: 92=2

Question: " $eldin) 'rocedure %ualification test cou'on is $elded usin) ?!o0 23, S629,alloy AA1 alu*inu* base *aterial in t&e .oE/ te*'er0 "fter $eldin) t&e test cou'on, it issubjected to a TAE &eat treat*ent0 To establis& acce'tability of tensile tests 'er QW1301, *ay

t&e tensile re%uire*ents of QW=22 for S629, alloy AA1 .T= and TA te*'ers in t&e $elded

condition/ be used

-e'ly: !o0


Subject: QW322, 4'iration and -ene$al of QualificationDate Issued: #ay 2A, 1993ile !o: 931=5


12/95

6ack)round: " $eldin) o'erator is in t&e 'rocess of rene$in) &isG&er %ualification usin)*ac&ine 8T"W $eldin) e%ui'*ent0 Durin) t&e 'rocess t&e *ac&ine *alfunctions and burns

t&rou)& t&e root 'ass of t&e test cou'on0 !o o'erator error is noted0 ollo$in) t&e *alfunction,t&e test cou'on is re'aired usin) a *anual 8T"W 'rocess0 "fter t&e re'air, t&e *ac&ine $eldin)

e%ui'*ent is used to co*'lete t&e rest of t&e test cou'on0

Question: #ay a $eldin) o'erator 'erfor*ance test cou'on bein) $elded for %ualification orrene$al, be re'aired 'rior to testin), usin) a *anual $eldin) 'rocedure

-e'ly: !o0

Inter$ret%ti"n: IX&-&0

Subject: QW=2301, "lternate 6ase #etals for Welder Qualification

Date Issued: #ay 2A, 1993ile !o: 931=5

Question: In QW=2301, is ?!o0 =2 included in ?!o0 =X

-e'ly: @es0

Inter$ret%ti"n: IX&-&

Subject: QW21, #anufacturerHs or +ontractorHs -es'onsibility

Date Issued: #ay 2A, 1993ile !o: 93377

6ack)round: +o*'any " and +o*'any 6 *er)e diisions to for* ne$ +o*'any +0

Question .1/: #ay t&e ne$ +o*'any, +, use ?Q-s and W?Ss deelo'ed 'reiously by+o*'any " and +o*'any 6

-e'ly .1/: @es, 'roided o'erational control is in accordance $it& QW210

Question .2/: #ay t&e ne$ +o*'any, +, use t&e central *aterials laboratory of +o*'any " todeelo' W?Ss and ?Q-s

-e'ly .2/: @es, 'roided o'erational control is in accordance $it& QW210

Inter$ret%ti"n: IX&-&'

Subject: QW21, #anufacturerHs or +ontractorHs -es'onsibilityDate Issued: #ay 2A, 1993

ile !o: 93391

Question: In a contract inolin) 'i'in) construction $ork, our co*'any subcontracted t&e

'i'in) 'refabrication $ork to a subcontractor0 T&is subcontractor is *ana)ed by our co*'any

but &as a different na*e0 T&e subcontractor 'roceeded to %ualify $eldin) 'rocedures $&ic& $ereconducted in t&e 'resence and $it& t&e a''roal of our co*'anyHs $eldin) en)ineer, $&o*onitored t&e $eldin) of t&e test cou'ons and si)ned a''roal on t&e ?Q-s0 T&e Quality


13/95

+ontrol Syste* of t&e subcontractor and our co*'any fully describe t&e o'erational control of

'rocedure %ualifications0 Was our client ri)&t in rejectin) t&e use by our co*'any of t&esubcontractor %ualified $eldin) 'rocedures for t&e erection $ork of t&e 'refabricated 'i'in)

-e'ly: T&is is a contractual issue, $&ic& "S# does not address0

Inter$ret%ti"n: IX&-&*

Subject: QW3A, +o*bination of Weldin) ?rocessesC and QW=1, 8rooe Weld?rocedure Qualification T&ickness Ki*its and Test S'eci*ens

Date Issued: June 3, 1993

ile !o: 9211"

Question: In usin) a sin)le set of test s'eci*ens to %ualify t$o or *ore 'rocesses or 'rocedures,does Section IX s'ecify a *ini*u* $eld de'osit t&ickness to be included in eac& test s'eci*en

fro* eac& of t&e 'rocesses or 'rocedures

-e'ly: !o0

Inter$ret%ti"n: IX&-&

Subject: QW=901, lectrical +&aracteristicsDate Issued: June 3, 1993

ile !o: 92116, 92225, 9233

Question: Is it t&e intent of QW=901 t&at t&e &eat in'ut, to be recorded on t&e ?Q-, becalculated based on t&e 'ara*eters used at t&e location $&ere t&e i*'act s'eci*ens $ere

re*oed

-e'ly: @es0

VOLUME /)

Inter$ret%ti"n: IX&-&'(RSubject: QW=30, 6ase #etals

Date Issued: June =, 21

ile !o: =7

Question .1/: W&en a 'rocedure %ualification $it& su''le*ental notc& tou)&ness re%uire*ent is

conducted $it& one ?!u*ber *aterial &ain) *ulti'le certifications in different 8rou'

!u*bers, are W?Ss %ualified for all co*binations of t&e 8rou' !u*bers

-e'ly .1/: @es0

Question .2/: In t&e aboe %uestion, does one set of


14/95

Question .3/: W&en a 'rocedure %ualification $it& su''le*ental notc& tou)&ness re%uire*ent is

conducted $it& t$o *aterials of different ?!u*ber eac& &ain) *ulti'le certifications indifferent 8rou' !u*bers, are W?Ss %ualified for all co*binations of t&e *ulti'le certified 8rou'

!u*ber of t&e first ?!u*ber *aterial to t&e *ulti'le certified 8rou' !u*ber of t&e second ?!u*ber *aterial

-e'ly .3/: @es0

Question .=/: In t&e aboe %uestion, does one set of


15/95

Question .2b/: W&en t&e oerlay test s'eci*ens are less t&an R in0 t&ick, *ay t&e side bend

s'eci*en $idt& be t&e test s'eci*en t&ickness

Question .2c/: #ay t&e ed)es of t&e oerlay be outside of t&e bent area as lon) as at least a 1Lin0 $idt& of oerlay and


16/95

Question: W&en $ritin) *ulti'rocess $eldin) 'rocedures 'er QW20=.a/, $&ere t&e tube $all

t&ickness is less t&an 1 in0, usin) a se'arate %ualification for t&e root de'osit only, *ust t&e rootde'osit %ualification cou'on be L in0 *ini*u* t&ickness as stated in QW20=.b/

-e'ly: !o0


Subject: QW=A2, Test S'eci*ensDate Issued: Se'te*ber 22, 1993

ile !o: 931

Question: QW=A2 defines W as s'eci*en $idt&, in0E0 Is in0 a *ini*u* or *a4i*u*

di*ension re%uire*ent for 're'arin) a reduced section tensile s'eci*en

-e'ly: !o0

Inter$ret%ti"n: IX&-&''Subject: QW20=, +o*bination of Weldin) ?roceduresC and QW=10=, illet Welds

Qualified by 8rooe Weld Tests

Date Issued: Se'te*ber 22, 1993ile !o: 9315

6ack)round: " butt $eldin) 'rocedure %ualification $as co*'leted on a 'i'e $it& A1

electrode .!o0 3/ for t&e root 'ass and 715 electrode .!o0 =/ for t&e re*ainin) 'rocess0

Question .1/: Will t&e aboe 'rocedure %ualification alone su''ort a W?S to *ake a fillet $eld

$it& 715 electrodes .!o0 =/ for all t&e 'asses for all fillet sies on all base *etal t&icknesses$&en all t&e ot&er essential ariables under QW23, S#"W 'rocess, are t&e sa*e

-e'ly .1/: @es0

Question .2/: Will t&e aboe 'rocedure %ualification alone su''ort a W?S to *ake a butt $eld$it& 715 electrodes .!o0 =/ for all t&e 'asses includin) t&e root 'ass $it&in t&e li*its of

%ualification of QW=101 and $it&in t&e li*its of t&e essential ariables under QW23, S#"W'rocess

-e'ly .2/: @es0

Inter$ret%ti"n: IX&-&'*

Subject: QW202.b/, Weldin) ?rocedure QualificationsDate Issued: Se'te*ber 22, 1993

ile !o: 93A1

Question .1/: #ay a co*'any subcontract $eld 'rocedure deelo'*ent and %ualification,

includin) certification of t&e ?Q-, $it&out a co*'any re'resentatie 'resent to $itness t&e

$eldin), testin) and certification

-e'ly .1/: !o0


17/95

Question .2/: #ay a co*'any subcontract $eld 'rocedure deelo'*ent and %ualification,includin) certification of t&e ?Q-, $it& a co*'any re'resentatie 'resent to $itness t&e $eldin),

testin) and certification

-e'ly .2/: !o0


Subject: QW1101, Tension Tests, -educed Section?lateC and QW=A201.a/, TestS'eci*ens


ile !o: 9353

Question .1/: Is it 'er*issible to reduce a 'late test cou'on t&ickness beyond re*oin) t&ereinforce*ent to allo$ for 'arallel surfaces

-e'ly .1/: @es0

Question .2/: W&at 'ercenta)e of t&e t&ickness is 'er*issible to be re*oed for 'rocedure%ualification

-e'ly .2/: T&e *ini*u* necessary to obtain 'arallel surfaces0

Inter$ret%ti"n: IX&-&*(

Subject: QW13, -es'onsibilityC and QW21, #anufacturerHs or +ontractorHs-es'onsibility


ile !o: 935=

Question: W&en a co*'any c&an)es na*es durin) t&e course of ti*e *ust all t&e &istoricaldocu*ents, suc& as ?Q-s and W?Qs, be reised to s&o$ t&is ne$ na*e

-e'ly: !o, 'roided t&ere is docu*ented traceability fro* t&e ne$ co*'any na*e to t&e W?Ssand ?Q-s %ualified under t&e old co*'any na*e0

Inter$ret%ti"n: IX&-&*+

Subject: QW1301 and QW21, #anufacturerHs or +ontractorHs -es'onsibilityDate Issued: Fctober 15, 1993ile !o: 923A

Question .1/: "ccordin) to Section IX, 'ara0 QW21, is it 'er*issible for a *anufacturer orcontractor to &ae t&e $eldin) of t&e test $eld*ents 'erfor*ed by anot&er or)aniation

-e'ly .1/: !o0

Question .2/: "ccordin) to 'ara0 QW21, is it 'er*issible to subcontract t&e $ork 're'aration

of test *etal for $eldin) and subse%uent $ork on 're'aration of test s'eci*ens fro* t&eco*'leted $eld*ent, 'erfor*ance of nondestructie e4a*ination, and *ec&anical test, 'roidedt&at t&e *anufacturer or contractor acce'ts t&e res'onsibility for any suc& $ork


18/95

-e'ly .2/: @es0

Question .3/: If t&e *anufacturer or contractor $rites t&e W?S and t&e $elder used to 'roduce$eld*ents to be tested for %ualification of 'rocedures are under full su'erision and control of a

re'resentatie of t&e *anufacturer or contractor durin) t&e 'roduction of t&ese test $eld*ents,

*ay t&e $elder be an e*'loyee of anot&er or)aniation

-e'ly .3/: !o0

Inter$ret%ti"n: IX&-&*-Subject: +ode +ase 21=1, lectrodes and lu4es for Sub*er)ed "rc Weldin), S" 017

and S" 023Date Issued: !oe*ber 22, 1993

ile !o: 93=3=

Question .1/: Does t&e #anufacturerHs Date -e'ortE in t&e Section IX +ode +ase 21=1 *ean

t&e follo$in): .a/ #anufacturerHs Data -e'ort re%uired in ?8112 of Section IC .b/ Data -e'ortre%uired in !+"377 of Section IIIC .c/ Data -e'ort re%uired in P812 of Section ;III,

Diision 1C or .d/ #anufacturerHs Data -e'ort re%uired in "S3 of Section ;III, Diision 2

-e'ly .1/: " #anufacturerHs Data -e'ort for* is any data re'ort fro* t&at is re%uired in an

"S# +ode 6ook0

Question .2/: Is it re%uired to describe t&is +ode +ase nu*ber on 'rocure*ent andGor*anufacturerHs s'ecifications and certified *aterial test re'ort of $eldin) consu*ables

-e'ly .2/: Section IX does not address 'rocure*ent and *anufacturerHs s'ecifications0

Inter$ret%ti"n: IX&-&*/

Subject: Q6=1, 6rain) ;ariablesDate Issued: Se'te*ber 22, 1993ile !o: 9327

Question .1/: Does "S# Section IX 'er*it brae $eldin) %ualifications, usin) t&e rules of ?art

QW, Weldin)

-e'ly .1/: @es0

Question .2/: #ay a fabricator %ualify &ardfacin), usin) t&e brain) ariables listed in Q6=1

-e'ly .2/: !o0

Inter$ret%ti"n: IX&-&*)

Subject: QW=702, ?ost$eld


19/95

6ack)round: " ?Q- $as $elded on a 2 in0 t&ick ?!o0 1, 8r0 2 *aterial and 'ost $eld &eat

treated at 11 for si4 &ours .3 &rsGin0/ $it& su''le*entary essential ariable re%uire*ents0

Question: Will t&is ?Q- su''ort a W?S for a 'roduction $eld in 2 in0 t&ick ?!o0 1, 8r0 2*aterial t&at is ?W


20/95

-e'ly .1/: !o0

Question .2/: Is t&e &eat in'ut alue of 5, JGin0 a''licable to base *etal t&icknesses bet$een

U in0 to 2 in0 and t&e &eat in'ut alue of =, JGin0 a''licable to base *etal t&icknesses bet$eenG1A in0 and U in0

-e'ly .2/: @es0

Inter$ret%ti"n: IX&-&**

Subject: QW=901 and QW=905, lectrical +&aracteristics

Date Issued: ebruary 1=, 199=ile !o: 9393

Question: Section IX, QW=905 and QW=901, re%uire t&at t&e olts and a*'s be s'ecified in

t&e W?S0 Does Section IX re%uire olta)e to be *easured at a s'ecific location in t&e $eldin)circuit or t&e current to be *easured usin) a s'ecific ty'e of *eter .-#S, aera)in) or ot&er

ty'e/

-e'ly: !o0


Subject: QW=201, 8rooe Weld ?rocedure Qualification T&ickness Ki*its and TestS'eci*ensC and QW=203, 8rooe Weld Dia*eter Ki*its

Date Issued: ebruary 1=, 199=ile !o: 93A3

Question: " $elder &as %ualified on 3 in0 F0D0 L in0 $all 'i'e in t&e 18 'osition and &as also%ualified on 1 in0 F0D0 N in0 $all 'i'e in t&e 18 'osition0 Is t&e $elder %ualified to $eld 1 in0

F0D0 R in0 $all in t&e 18 'osition

-e'ly: @es0

Inter$ret%ti"n: IX&-&(Subject: QW=A109, ?erfor*ance Qualification ?osition and Dia*eter Ki*itations

Date Issued: ebruary 1=, 199=

ile !o: 9373

Question: " $elder &as 'assed t$o se'arate testsC one on U in0 F0D0 by 0=9 in0 t&ick 'i'e

$elded in t&e A8 'osition usin) 8T"W 'rocess, and anot&er on L in0 t&ick 'late $elded in t&e

18 'osition usin) 8T"W 'rocess0 Do t&ese t$o tests in co*bination %ualify t&e $elder to $eld'i'e of unli*ited dia*eter in all 'ositions u' to 1 in0 t&ick usin) 8T"W

-e'ly: !o0

Inter$ret%ti"n: IX&-&+Subject: QW3, 8eneral Weldin) ?erfor*ance QualificationsDate Issued: ebruary 1=, 199=


21/95

ile !o: 937

Question: Does Section IX 'ro&ibit *akin) editorial corrections to $elder and $eldin) o'erator

'erfor*ance %ualification records

-e'ly: !o0

Inter$ret%ti"n: IX&-&-Subject: QW21, #anufacturerHs or +ontractorHs -es'onsibility, +larification -e%uest to

Inter'retation IX927, Date Issued: Fct0 7, 1991, ile 911A

Date Issued: #ay 2, 199=ile !o: 93A75

Question .1/: Is t&e ter* Fr)aniationE as stated in QW21 and +o*'any "E in

Inter'retation IX927 one and t&e sa*e

-e'ly .1/: !o0

6ack)round: T$o co*'anies are contracted by a client co*'any to undertake 'i'e $ork

installation on its facility0 "ll sta)es of t&e Weldin) ?rocedure Qualification ?rocess for t&e t$o

contracted co*'anies are $itnessed by t&e client co*'anies re'resentatie and t&edocu*entation duly sta*'ed and si)ned as acce'ted by t&e client0

Question .2/: #ay t&ese 'rocedures be used by t&e client co*'any

-e'ly .2/: !o0

Question .3/: Does t&e client co*'any &ae to re%ualify t&ese 'rocedures in order to 'erfor* in&ouse *aintenance at a later date usin) all t&e sa*e essential and nonessential ariables $it& its

o$n %ualified $elders

-e'ly .3/: @es0

Inter$ret%ti"n: IX&-&/Subject: Q6=201, 6rain) Data and "''endi4 + B !on*andatory S!u*bers

Date Issued: #ay 2, 199=

ile !o: 9372

Question .1/: Does t&e brain) 'rocedure %ualification test $it& a base *etal assi)ned one S

!u*ber, or S!u*ber 'lus 8rou'!u*ber, %ualify for all ot&er base *etals in t&e sa*e S

!u*ber )rou'in)

-e'ly .1/: @es0

Question .2/: Does t&e brain) 'rocedure %ualification test $it& dissi*ilar *etals usin) one

*etal listed in one S!u*ber to one s'ecific *etal not listed in one S or ?!u*ber %ualify for t&e

brain) of all ot&er base *etals in t&e sa*e S!u*ber to t&e*seles and to t&e s'ecific base*etal $it&out S or ?!u*ber


22/95

-e'ly .2/: @es0


Subject: Section II, ?art + B S"05


ile !o: 937=

Question: #ay "WS +lassification 6a)3= be considered S"05 filler *etal een t&ou)& itdoes not a''ear in t&e 1992 "S# 6oiler and ?ressure ;essel +ode Section II, ?art + .includin)

t&e 1992 "ddenda/

-e'ly: @es0

Inter$ret%ti"n: IX&-&0Subject: QW2, 8eneral Weldin) ?rocedure Qualifications


ile !o: 9=5

Question: #ay a sin)le W?S be %ualified bot& $it& ?W


23/95

Question: "ccordin) to QW20=.a/, $&en a %ualified W?S for a co*bination 'rocess is

aailable, *ust a ne$ W?S be )enerated in only one of t&e 'rocesses is to be used in 'roduction,'roided all re%uire*ents of Section IX for t&e 'rocess used are *et

-e'ly: !o0


Subject: "''endi4 +, !on*andatory S!u*bersDate Issued: #ay 2, 199=

ile !o: 9=23A

Question: #ay steel 'roduced to "ST# "15 8rade 115, P!S 8115, be considered S1

*aterial

-e'ly: @es0

Inter$ret%ti"n: IX&-&Subject: QW=320A, !u*bersC and Section II, ?art + B S"092

Date Issued: June 1, 199=

ile !o: 937A2 and 937A9

Question: #ay "WS 02= - r= be considered as an !o0 A1 filler *etal

-e'ly: @es0

VOLUME /

Inter$ret%ti"n: IX&0&(+Subject: QW201.b/, 8eneral Weldin) ?rocedure QualificationsC and QW=20=, JointsDate Issued: Se'te*ber 21, 199=

ile !o: 9=1=

Question: If a W?S states t&at t&e 8T"W 'rocess s&all be used on root and second 'ass of o'en

root or *etal backed )rooe joints and t&e S#"W 'rocess s&all be used on t&e re*ainder of t&e)rooe joint, is it necessary to state t&at t&e S#"W 'ortion of t&e W?S *ust be 'erfor*ed $it&

backin) .i0e0, t&e 8T"W 'rocess/

-e'ly: !o0

Inter$ret%ti"n: IX&0&(-Subject: QW=A2, Test S'eci*ens

Date Issued: Se'te*ber 21, 199=

ile !o: 9=151


24/95

Question: W&at are t&e *ini*u* and *a4i*u* tolerances for s'eci*ens s&o$n in QW=A2,

$&ere t&e fi)ures s&o$ a''ro4i*ateE di*ensions

-e'ly: "s stated in t&e ore$ord, T&e +ode does not fully address tolerances0 W&endi*ensions, sies, or ot&er 'ara*eters are not s'ecified $it& tolerances, t&e alues of t&ese

'ara*eters are considered no*inal and allo$able tolerance or local ariances *ay be considered

acce'table $&en based on en)ineerin) jud)*ent and standard 'ractices as deter*ined by t&edesi)ner0E

Inter$ret%ti"n: IX&0&(/

Subject: QW2202.b/, 8rooe and illet Weld TestsC and QW2203.b/, Weld -e'air and6uildu' Tests

Date Issued: Se'te*ber 21, 199=ile !o: 9=23

6ack)round: ?rocedure %ualification $as 'erfor*ed by *akin) a full 'enetration $eld on 1L in0

t&ick 'late0 ?ara)ra'& QW2202.b/ states t&at %ualification on 1L in0 or t&icker base *etal

%ualifies for *akin) 'artial 'enetration $elds on base *etals $it& no u''er li*it of base *etalt&ickness0 !o *ini*u* t&ickness of base *etal is addressed0

Question .1/: Does %ualification of a 1L in0 t&ick base *etal %ualify for *akin) 'artial'enetration )rooe $elds on base *etals $&ic& are less t&an 3G1A in0 t&ick

-e'ly .1/: !o, see 'ara0 QW=101 for *ini*u* base *etal t&icknesses0

6ack)round: ?rocedure %ualification $as 'erfor*ed by *akin) a full 'enetration $eld on 1L in0

t&ick 'late0 ?ara)ra'& QW2203.b/ states t&at %ualification on 1L in0 t&ick or t&icker base *etal

%ualifies for *akin) $eld re'airs or $eld buildu's on base *etals of unli*ited t&ickness0

Question .2/: Does %ualification on 1L in0 base *etal %ualify for *akin) $eld re'airs or $eldbuildu's on base *etals $&ic& are less t&an 3G1A in0 t&ick

-e'ly .2/: !o, see 'ara0 QW=101 for *ini*u* base *etal t&icknesses0

Inter$ret%ti"n: IX&0&()

Subject: QW=203, 8rooe Weld Dia*eter Ki*its and Sub*er)ed "rc Wire lu4

+o*binationDate Issued: Se'te*ber 21, 199=ile !o: 9=29A

Question .1/: "ccordin) to 'ara0 QW=203, is t&e inside dia*eter an essential ariable for'erfor*ance %ualification

-e'ly .1/: !o0

6ack)round: " W?S for S"W 'rocess $as %ualified $it& a $ire flu4 co*bination classified as

A?K5, usin) one trade na*e for flu40 T&is W?S $as in use for seeral years0 !o$ t&e flu4*anufacturer &as c&an)ed t&e classification to 7?2K5 $it&out c&an)in) t&e trade na*e of


25/95

flu40 T&e flu4 trade na*e is *entioned on t&e W?S and ?Q- alon) $it& t&e for*er "WS

classification0

Question .2/: Is it re%uired to re%ualify t&is W?S due to t&e c&an)e in t&e "WS class of t&e $ireflu4 co*bination by t&e flu4 *anufacturer $it&out c&an)in) its Trade !a*e

-e'ly .2/: @es, see 'ara0 QW==09.a/0

Inter$ret%ti"n: IX&0&(0

Subject: QW=22, ?!u*bers

Date Issued: Se'te*ber 21, 199=ile !o: 9=3A

Question: #ay S6A= P!S !552 be considered as ?!o0 =, since it &as identical 'ro'erties

to S6=2 P!S !552 t&at is assi)ned ?!o0 = in QW=22

-e'ly: !o0

Inter$ret%ti"n: IX&0&(

Subject: QW1301, Tension TestsDate Issued: Se'te*ber 21, 199=

ile !o: 9==2

Question: If a tensile s'eci*en breaks in t&e $eld *etal, belo$ t&e $eld *etalHs *ini*u*s'ecified tensile re%uire*ent, but not belo$ t&e *ini*u* tensile stren)t& s'ecified for t&e base

*etal, is t&e ?Q- considered acce'table

-e'ly: @es0

VOLUME /'

Inter$ret%ti"n: IX&0&('

Subject: QW=202, S!u*bersDate Issued: #arc& 17, 199

ile !o: 9=22

Question: W&en %ualifyin) a $eldin) 'rocedure usin) S1 )rou' 2 for "?I KXA 'i'e joinin) to#SS S?7 or "ST# "5A W?


26/95

Question .1/: W&en T2is )reater t&an in0 in i)0 QW=A20=.a/, $&at is t&e *a4i*u* sie fillet$eld re%uired

-e'ly .1/: in0

Question .2/: In QW=A20=.a/, $&at does sie of fillet V t&ickness T2E *ean

-e'ly .2/: T&e len)t& of eac& fillet le).s/ s&all be no*inally e%ual to t&e t&ickness of T20

Question .3/: Is t&ere a tolerance for t&e fillet le) sie

-e'ly .3/: !o0 "s stated in t&e 1992 "ddenda to t&e ore$ord, $&en tolerances are not

s'ecified, di*ensions are considered no*inal and allo$able tolerances or local ariances *ay beconsidered acce'table $&en based on en)ineerin) jud)*ent and standard 'ractices as deter*ined

by t&e desi)ner0

Inter$ret%ti"n: IX&0&(Subject: QW13, "cce'tance +riteria B Tension Tests

Date Issued: #arc& 17, 199

ile !o: 9=7

Question: W&en $elds bet$een base *etals of different *ini*u* s'ecified tensile stren)t&s arebein) tested and tensile failure occurs in eit&er of t&e base *etals, does t&e reference to base

*etal $it&in QW1301.d/ *ean t&e base *etal $it& t&e lo$er *ini*u* s'ecified tensilestren)t&

-e'ly: @es0

Inter$ret%ti"n: IX&0&+(

Subject: QW20=, +o*bination of Weldin) ?roceduresDate Issued: #arc& 17, 199ile !o: 9=AA2

Question: #ay a sin)le 'rocess W?S be %ualified by a co*bination 'rocess ?Q- $&ere no

essential ariables for t&e 'rocess are c&an)ed

-e'ly: @es0

Inter$ret%ti"n: IX&0&++Subject: QW=5, 8as

Date Issued: #arc& 17, 199ile !o: 92

Question: Is it re%uired to indicate t&e 'urity leel by 'ercent co*'osition or descri'tie ter*s of

a sin)le s&ieldin) )as on t&e W?S and on t&e ?Q-

-e'ly: !o0


27/95

Inter$ret%ti"n: IX&0&+-

Subject: QW220=, Dissi*ilar 6ase #etal T&icknessesDate Issued: #arc& 17, 199

ile !o: 927

Question: Does QW220= include butt joints and corner joints $&en joinin) dissi*ilar base*etal t&icknesses $&en 're'ared $it& a )rooe

-e'ly: @es0

Inter$ret%ti"n: IX&0&+/

Subject: QW23, Ki*its of Qualified ?ositions for ?roceduresC and Section II, ?art +,

S"01 and 0Date Issued: June 1, 199

ile !o: 9=3

Question: Do t&e re%uire*ents for classification of filler *etals in accordance $it& "S#

Section II, ?art + a''ly to t&e %ualification of $eldin) and brain) 'rocedures in accordance $it&

Section IX

-e'ly: !o0

Inter$ret%ti"n: IX&0&+)

Subject: QW303, Weldin) ?erfor*ance Qualifications

Date Issued: June 1, 199ile !o: 9=

Question: "re t&ere any circu*stances under $&ic& a none*'loyee 'erson or or)aniation can

re'resent one or *ore 'artici'atin) or)aniations durin) $eldin) of t&e test cou'on in accordance$it& t&e re%uire*ents of QW303

-e'ly: !o0

Inter$ret%ti"n: IX&0&+0Subject: QW1A, 8uided6end TestsC and QW=AA !ote .b/ B Test Ji)sDate Issued: June 1, 199

ile !o: 99=

Question: Is it acce'table to *easure t&e 'ercent elon)ation of t&e tensile s'eci*ens in lieu of

bend s'eci*ens to *easure t&e ductility for $eldin) 'rocedure %ualification acce'tance

-e'ly: !o0

Inter$ret%ti"n: IX&0&+

Subject: QW2, Weldin) ;ariables ?rocedure S'ecifications for +"WC and QW


28/95

=502, 8as

Date Issued: June 1, 199ile !o: 99

Question: #ay a +"W $eldin) 'rocedure, %ualified $it&out s&ieldin) )as, be used $it& a

s&ieldin) )as $it&out re%ualification

-e'ly: !o0

VOLUME /*

Inter$ret%ti"n: IX&0&+'

Subject: QW320=, ;isual 4a*inationDate Issued: Fctober 19, 199

ile !o: 93

Question .1/: or t&e fillet $eld cou'on in $elder 'erfor*ance %ualification, does t&e *acro

e4a*ination re%uired 'er QW=20 e4e*'t t&e isual e4a*ination re%uired 'er QW320=

-e'ly .1/: !o0

Question .2/: Does t&e isual e4a*ination of t&e fillet $eld test cou'on re%uired 'er QW320=

refer to t&e final $eld face side only

-e'ly .2/: @es0

Inter$ret%ti"n: IX&0&+*Subject: QW=905, lectrical +&aracteristics

Date Issued: Fctober 19, 199ile !o: 922

Question: Does Section IX re%uire t&at a se'arate a*'era)e ran)e be s'ecified for eac& filler*etal sie listed in t&e W?S

-e'ly: !o0

Inter$ret%ti"n: IX&0&+

Subject: QW303, Weldin) ?erfor*ance QualificationsC and QW32201.b/, 4'iration

of Welder Qualification


6ack)round: " $elder si*ultaneously %ualifies for ten different contractors in accordance $it&QW3030 QW303 re%uires t&e contractor t&at rejects a $elder to notify t&e ot&er contractors

$&o 'artici'ated in t&e si*ultaneous test t&at t&e $elderHs %ualification &as been reoked0 Fne of

t&e contractors subse%uently reokes t&e $elderHs %ualification for s'ecific reason in accordance$it& QW32201.b/0


29/95

Question .1/: "re t&e ot&er nine contractors $&o %ualified t&e $elder si*ultaneously, re%uired to

reoke t&e $elderHs %ualification 'er QW32201.b/

-e'ly .1/: !o0

Question .2/: W&en a 'artici'atin) contractor reokes a $elderHs %ualification for a s'ecific

reason, does QW303 re%uire t&e ot&er 'artici'atin) contractors to retest t&e $elder or $eldin)o'erator

-e'ly .2/: !o0

Inter$ret%ti"n: IX&0&-(

Subject: QW3, Weldin) ?erfor*ance QualificationDate Issued: Fctober 19, 199

ile !o: 932

Question: If t&e *anufacturer or contractor $rites t&e W?S, and t&e $elder used to 'roduce t&e

$eld*ents to be tested for %ualification of 'rocedures is under t&e full su'erision and control oft&e *anufacturer or contractor durin) t&e 'roduction of t&ese test $eld*ents, *ay t&e $elder be a

contracted e*'loyee, 'roided t&e Quality +ontrol syste* or Quality "ssurance ?ro)ra* of t&e

*anufacturer or contractor describes t&e control of contracted $elders

-e'ly: @es0

Inter$ret%ti"n: IX&0&-+

Subject: QW=30, 6ase #etals


6ack)round: " ?Q- is %ualified in accordance $it& Section IX, $it& su''le*entary essential

ariables, usin) a *aterial fro* 6ritis& Standard 1122==9"KT

Question: #ay t&is ?Q- be used to su''ort a W?S utiliin) a ?!u*ber 1, 8rou' !u*ber 2

*aterial $it& su''le*entary essential ariables

-e'ly: !o0

Inter$ret%ti"n: IX&0&--

Subject: QW=2=, 6ase #etals Psed for ?rocedure Qualification

Date Issued: Dece*ber 25, 199ile !o: 921

Question: Does a 'rocedure %ualification usin) an unassi)ned *etal to an assi)ned ?!u*bered*etal %ualify for $eldin) t&e base *etals to t&e*seles usin) all t&e nonessential, essential and

su''le*entary essential ariables %ualified

-e'ly: !o0


30/95

Inter$ret%ti"n: IX&0&-/Subject: QW=3, !otes .3/ and .1/, T&ickness Ki*its and Test S'eci*ens for


31/95

'arent co*'any/ s'lits + back to 6 and +0 6ot& 6 and + no$ o'erate inde'endently, but under

co*'any "0

Question: #ay co*'any 6 use t&e W?Ss and ?Q-s initially deelo'ed by 6 and also use W?Ssand ?Q-s %ualified by co*'any + before t&e last reor)aniation

-e'ly: @es, 'roided t&at t&e re%uire*ents of QW21 are satisfied0

Inter$ret%ti"n: IX&0&-'


Date Issued: #arc& 19, 199Aile !o: 9=52

Question: #ay a subcontractor use a W?S su''orted by a ?Q- $&ic& $as %ualified by t&e

contractin) co*'any and subse%uently su''lied to t&e subcontractor

-e'ly: !o0

Inter$ret%ti"n: IX&0&-*

Subject: QW=301, S&ort +ircuitin) #odeDate Issued: #arc& 19, 199A

ile !o: 9A2

Question: "re t&e base *etal t&ickness restrictions for t&e 8#"W 'rocess s&ort circuitin) *odestated in QW=301 and QW==032 also a''licable to fillet $eld tests, eit&er in 'rocedure

%ualifications .QW=103, QW=10=/ or in 'erfor*ance %ualifications .QW=20=, QW=20

and QW=20A/

-e'ly: !o0

Inter$ret%ti"n: IX&0&-


Date Issued: #ay 3, 199Aile !o: 932

Question: If *ore t&an one *anufacturer or contractor a)rees u'on t&e use of one W?S, $&ic& isto be follo$ed durin) 'roduction of test $eld*ents for %ualification testin), *ay t&e $elder usedto 'roduce t&e $eld*ents to be tested for %ualification 'rocedures, be under t&e full su'erision

and control of eac& *anufacturer or contractor durin) t&e $eldin), 'roided t&e Quality +ontrol

Syste* or Quality "ssurance ?ro)ra* of eac& *anufacturer or contractor describes t&e control of$elders

-e'ly: @es0

Inter$ret%ti"n: IX&0&/(Subject: QW3, Weldin) ;ariables for WeldersDate Issued: #ay 3, 199A


32/95

ile !o: 9A73

Question .1/: Do t&e essential ariables of QW3 a''ly to $eldin) o'erators carryin) out

corrosion resistant oerlay

-e'ly .1/: !o0

Question .2/: "re $eldin) o'erators %ualified for sub*er)ed arc $eldin), also %ualified forlectrosla) $eldin) and ice ersa

-e'ly .2/: !o0

Question .3/: Is a $eldin) o'erator %ualified to QW3A and QW351 of Section IX in

sub*er)ed arc $eld oerlay usin) $ire electrode, also %ualified to use stri' electrodes $it& t&esa*e 'rocess

-e'ly .3/: @es0

Inter$ret%ti"n: IX&0&/+

Subject: QW3A102, ssential ;ariables B #ac&ine Weldin)

Date Issued: #ay 3, 199Aile !o: 9A1=1

6ack)round: " $eldin) o'erator &as direct isual contact $it& a 'i'e $eld*ent t&at is bein)

$elded utiliin) *ac&ine orbital 'i'e $eldin) e%ui'*ent0 T&is $eldin) o'erator is )iin) erbalco**ands to a second $eldin) o'erator, $&o does not &ae eye contact $it& t&e $eld*ent, and

$&o is 'ositionin) t&e $eld &ead and $ire ai*ers located on t&e &ead re*otely, durin) t&e

$eldin) of t&e joint in accordance $it& t&e erbal co**ands of t&e first o'erator0 ac& $eldin)o'erator &as been %ualified to 'erfor* bot& re*ote and direct isual control $eldin)0

Question: "re t&ese $elders %ualified to *ake t&e subject $eld in accordance $it& QW3A102,

een t&ou)& t&e $eldin) o'erator &ain) direct isual control is directin) t&e 'ositionin) of t&eorbital 'i'e $eldin) e%ui'*ent erbally and does not &ae &andsonE control of t&e $eldin)&ead

-e'ly: @es0

VOLUME )(

Inter$ret%ti"n: IX&0&/-

Subject: QW302, Weldin) ?erfor*ance QualificationsDate Issued: July 1, 199A

ile !o: 932

Question: If *ore t&an one *anufacturer or contractor a)rees u'on t&e use of one W?S, $&ic& is

to be follo$ed durin) t&e 'roduction of test $eld*ents for %ualification testin), *ay t&e $elder

used to 'roduce t&e $eld*ents to be tested for %ualification of 'rocedures, be under t&e fullsu'erision and control of eac& *anufacturer or contractor durin) t&e $eldin), 'roided t&e


33/95

Quality +ontrol Syste* or Quality "ssurance ?ro)ra* of eac& *anufacturer or contractor

describes t&e control of $elders

-e'ly: @es0

Inter$ret%ti"n: IX&0&//Subject: QW=301, S&ort+ircuitin) #odeDate Issued: Se'te*ber 2=, 199Aile !o: 9A1

Question: Does QW=301 li*it t&e base *etal t&ickness %ualified to 101T for a co*bination8#"WSGS#"W ?Q- test cou'on t&ickness TE less t&an L in0, $&en used to su''ort a

co*bination 8#"WSGS#"W W?S

-e'ly: @es0

Inter$ret%ti"n: IX&0&/)Subject: QW2203, Weld -e'air and 6uildu'

Date Issued: Se'te*ber 2=, 199A

ile !o: 9AA

6ack)round: "ssurance of defectfree &ardfacin) de'osits on cast surfaces is often i*'roed if alayer of $eld *etal is first de'osited on t&e castin), actin) as a substrate for t&e subse%uent

&ardfacin) $eld *etal oerlay0

Question .1/: Does Section IX re%uire %ualification of t&e substrate .e0)0, in accordance $it&

QW2203 or $&en t&e substrate is not included in t&e desi)n *ini*u* $all t&ickness inaccordance $it& QW21=/ $&ic& $ill be subse%uently coered by a &ardfacin) $eld *etal

oerlay

-e'ly .1/: @es0

Question .2/: If t&e de'osit of t&e substrate is included in a &ardfacin) $eld *etal oerlay

'rocedure %ualified to QW21A, is ealuation of t&e substrate to QW2203 or QW21=, asa''licable, re%uired

-e'ly .2/: Section IX does not address %ualification of a co*bination substrateG&ardfacin) W?Sin a sin)le cou'on0

Inter$ret%ti"n: IX&0&/0Subject: QW301, Weldin) ?erfor*ance Qualifications

Date Issued: Se'te*ber 2=, 199Aile !o: 9A257

Question: Is it 'er*issible to use ultrasonic e4a*ination in lieu of radio)ra'&y to %ualify $elders

and $eldin) o'erators in accordance $it& QW301

-e'ly: !o0


34/95

Inter$ret%ti"n: IX&0&/

Subject: QW3, Weldin) ?erfor*ance QualificationsDate Issued: Se'te*ber 2=, 199A

ile !o: 9A31=

Question .1/: Would t&e successful %ualification of a $elder in a *anual or se*iauto*atic*et&od %ualify &i* to $eld in 'roduction usin) a *ac&ine or auto*atic *et&od in t&e sa*e

'rocess

-e'ly .1/: !o0

Question .2/: Since t&e essential ariables are t&e sa*e for bot& *et&ods, $ould successful%ualification $it& testin) in *anual 8T"W allo$ t&e sa*e $elder to $eld in 'roduction usin)

se*iauto*atic 8T"W $it&out testin)

-e'ly .2/: @es0

Inter$ret%ti"n: IX&0&/'

Subject: QW==09, iller #etalsDate Issued: Se'te*ber 2=, 199A

ile !o: 9A31

Question: In accordance $it& QW==09.c/, does a c&an)e in t&e $ire classification s&o$n inS"09, $it& no c&an)e in t&e flu4 co*'osition, !u*ber, or "!u*ber, re%uire 'rocedure

re%ualification

-e'ly: !o0

VOLUME )+

Inter$ret%ti"n: IX&0&/*

Subject: QW322, 4'iration and -ene$al of QualificationDate Issued: January A, 1997

ile !o: 9A132

Question: Is it a re%uire*ent of QW322 for a *anufacturer to *aintain records to de*onstrate a$elderHs or $eldin) o'eratorHs continuin) %ualification for a 'rocess fro* t&e date of t&e ori)inal

%ualification test

-e'ly: Section IX does not address &o$ confor*ance to QW322 is de*onstrated0 Ft&er book

sections *y address t&e *aintenance of records0

Inter$ret%ti"n: IX&0&/

Subject: QW3=, ?erfor*ance Qualification B WeldersDate Issued: January A, 1997ile !o: 9A331


35/95

Question .1/: Would t&e successful 'erfor*ance %ualification of a $elder in a *anual or se*iauto*atic ty'e .e0)0, 8#"W, 8T"W, S"W/ 'er QW3= %ualify t&e sa*e $elder to o'erate as

$eldin) o'erator in *ac&ine or auto*atic ty'e $eldin)

-e'ly .1/: !o0

Question .2/: If a $elder used 8#"W .s&ortcircuitin) *ode/ for t&e root 'ass and S"W for t&e&ot and fill 'asses of test cou'on, *ay t&e test cou'on be testin) usin) radio)ra'&y for t&e S"W

'ortion of t&e $eld, in accordance $it& QW3= and QW3A

-e'ly .2/: @es0

Inter$ret%ti"n: IX&0&)(

Subject: QW21, #anufacturerHs or +ontractorHs -es'onsibilityDate Issued: January 21, 1997

ile !o: 93=31 and 9222

6ack)round: +o*'any " $as a subsidiary of +o*'any 60 +o*'any 6 sold +o*'any " to

+o*'any +, and +o*'any " beca*e a diision of +o*'any +0

Question: #ay +o*'any " continue to use W?Ss and ?Q-s 'reiously deelo'ed by +o*'any

6

-e'ly: It is t&e intent of t&e +oe t&at $&en a *anufacturer or contractor, or 'art of a*anufacturer or contractor, is ac%uired by a ne$ o$ner.s/, t&e ?Q-s and W?Ss *ay be used by

t&e ne$ o$ner.s/ $it&out re%ualification, 'roided all of t&e follo$in) are *et:

.a/ t&e ne$ o$ner.s/ takes res'onsibility for t&e W?Ss and ?Q-sC

.b/ t&e W?Ss reflect t&e na*e of t&e ne$ o$ner.s/C and

.c/ t&e Quality +ontrol Syste*GQuality "ssurance ?ro)ra* reflects t&e source of t&e ?Q-sas bein) fro* t&e for*er *anufacturer or contractor0

Inter$ret%ti"n: IX&0&)+

Subject: QW=3, ?rocedureG?erfor*ance Qualification T&ickness Ki*its and TestS'eci*ens for


36/95


37/95

Question: Does a 'artial 'enetration )rooe $eld 'rocedure %ualification test asse*bly %ualify

for full 'enetration 'roduction )rooe $elds $it&in t&e ran)es indicated in QW=1

-e'ly: @es0

Inter$ret%ti"n: IX&*&()Subject: QW202, Weldin) ?rocedure QualificationsDate Issued: Dece*ber 1, 1997ile !o: 97=51

Question: Does "S# Section IX re%uire t&at a 'reli*inary W?S be attac&ed to t&e ?Q-

-e'ly: !o0

VOLUME )/

Inter$ret%ti"n: IX&*&(0Subject: QW=3, ?rocedureG?erfor*ance Qualification T&ickness Ki*its and Test

S'eci*ens for


38/95

to t&e co*bined *ini*u* and *a4i*u* oscillation ran)e %ualified .e0)0, $ould t&e ran)e

%ualified for a 1 in0 oscillation co*bined $it& a 10 in0 oscillation be 09 in B 10A in0/

-e'ly .1/: @es0

Question .2/: #ay t&e *ini*u* and *a4i*u* oscillation alues be co*bined and %ualified on

a sin)le &ardfacin) $eld *etal oerlay test cou'on, assu*in) all ot&er essential ariables are t&esa*e

-e'ly .2/: Section IX does not 'ro&ibit t&e %ualification of *ore t&an one set of essential

ariables on a sin)le test cou'on, 'roided eac& set of essential ariables is tested in accordance

$it& t&e re%uire*ents of Section IX0

Inter$ret%ti"n: IX&*&(*

Subject: QW=32, !u*bersDate Issued: "'ril 25, 1995

ile !o: 95131

Question: " W?S is %ualified $it& an S#" electrode t&at is not certified by t&e *anufacturer as

confor*in) to an "WS classification0 "re $elders $&o $ere 'reiously %ualified $it& an

electrode classified as =, also %ualified to use t&is unclassified electrode t&at confor*s to t&ede'osit c&e*istry of XXXX8, in Table 2 of S"0 .$it&in t&e ot&er li*itations of QW

3/

-e'ly: !o0

VOLUME ))

Inter$ret%ti"n: IX&*&(Subject: QW1 and QW=A201, Tension Test S'eci*ens for ?i'e and ?late


Question: Would tensile tests 'erfor*ed in accordance $it& S"37 be acce'table for *eetin)"S# Section IX, QW=A201.a/ and .b/

-e'ly: !o0

Inter$ret%ti"n: IX&*&+(

Subject: QW=701, ?ost Weld


39/95

-e'ly: @es0

Inter$ret%ti"n: IX&*&++

Subject: QW3, Weldin) ?erfor*ance Qualifications


ile !o: 95133

Question: #ay +o*'any " retain t&e +o*'any 6 e*'loyee res'onsible for $elder 'erfor*ance%ualification, to reie$ t&e $elder %ualification docu*ents of bot& co*'anies and %ualify t&e

$elders of +o*'any 6 to t&e $eldin) 'ro)ra* of +o*'any " $it&out furt&er testin) of t&e

$elders

-e'ly: !o0

Inter$ret%ti"n: IX&*&+-

Subject: QW=1, ?rocedure Qualification T&ickness Ki*its and Test S'eci*ens

Date Issued: Fctober 9, 1995ile !o: 95237G95235

Question: #ay lon)itudinal bend s'eci*ens be used in lieu of transerse bend s'eci*ens $&ent&e base *etals or t&e base *etal and t&e $eld *etal do not differ *arkedly in bendin)

'ro'erties

-e'ly: !o0

Inter$ret%ti"n: IX&*&+/Subject: QW201, Weldin) ?rocedure Qualifications


Question: "re allenco*'assin) ter*s acce'table $&en addressin) nonessential ariables in aW?S .e0), for backin), $it& or $it&outE, for root s'acin), unli*itedE/

-e'ly: Section IX does not s'ecify &o$ nonessential ariables are to be addressedC &o$eer, t&e

ter*s *ust 'roide direction to t&e $elderG$eldin) o'erator for *akin) 'roduction $elds to

+ode re%uire*ents0

Inter$ret%ti"n: IX&*&+)

Subject: QW3A102, #ac&ine Weldin) ;ariables for Weldin) F'eratorsC and QW351,+orrosion-esistant Weld #etal Ferlay

Date Issued: Dece*ber 22, 1995ile !o: 95==7

6ack)round: " *ulti'le layer corrosionresistant $eld *etal oerlay 'erfor*ance %ualification

.*ac&ine $eldin)/ is *ade $it& t&e first layer under Direct ;isual control and t&e second layer-e*ote ;isual control0


40/95

Question .1/: Is t&e $eldin) o'erator %ualified for bot& Direct and -e*ote ;isual control

tec&ni%ues a''lied eit&er in sin)le or *ulti'le layers

-e'ly .1/: @es0

Question .2/: or t&e %ualification described in t&e back)round, *ay t$o $eldin) o'erators

%ualify on one cou'on, 'roided t&e re%uire*ents of QW=3 and QW3A102 .$&ic& delineatet&e $eldin) o'erators li*its of %ualificationE as 'er QW3A/ are addressed

-e'ly .2/: @es0

Inter$ret%ti"n: IX&*&+0

Subject: QW=03, ?ositionsDate Issued: Dece*ber 22, 1995

ile !o: 95==5

Question: #ay a sin)le'ass seal $eldE as defined in QW=92, used to seal boiler tubes to a

boiler tube s&eet, be considered a coer 'assE or a $as& 'assE for 'ur'oses of e4e*'tion for*QW=03

-e'ly: !o0

Inter$ret%ti"n: IX&*&+

Subject: QW=A20.a/, +&e*ical "nalysis and


41/95

Inter$ret%ti"n: IX&*&+*Subject: QW2101, #anufacturerHs or +ontractorHs -es'onsibility


6ack)round: W&en one of a co*'anyHs 'lants is sold, it is not clear if t&e ne$ o$ner can use t&eWeldin) ?rocedure S'ecifications .W?S/ and ?rocedure Qualification -ecords .?Q-/ %ualified

by t&e ori)inal co*'any, $&en t&e ori)inal co*'any $is&es to continue usin) t&ose W?SsG?Q-s0

Question: +o*'any " sells one of its 'lants to +o*'any 60 #ay bot& +o*'any " and

+o*'any 6 use t&e W?SsG?Q-s 'reiously %ualified by +o*'any "

-e'ly: @es, 'roided t&e re%uire*ents of QW2101 are addresses by +o*'any 60

VOLUME )

Inter$ret%ti"n: IX&*&+Subject: QW==, iller #etals

Date Issued: Se'te*ber 2=, 1999

ile !o: 99=9

Question: Is re%ualification re%uired $&en t&e filler *etal s'ecified in t&e W?S and su''ortin)?Q- is *oed fro* one S" s'ecification to anot&er S" s'ecification, or t&e "WS

classification is c&an)ed, or $&en a 'reiously unclassified filler is classified by t&e filler *etal*anufacturer as confor*in) to an S" s'ecification

-e'ly: !o0

VOLUME )'

Inter$ret%ti"n: IX&*&-(RSubject: QW220=.b/, Dissi*ilar 6ase #etal T&icknessDate Issued: June 5, 2

ile !o: 9939

Question: W&en $eldin) a corner joint $it& dissi*ilar base *etal t&ickness, t&e t&ickness of

bot& *e*bers *ust be $it&in t&e %ualified t&ickness ran)e of t&e W?S.s/ bein) used0


42/95

VOLUME )*

Inter$ret%ti"n: IX&(+&(+

Subject: QW=3, 6ase #etal -e%uire*entC QW==, iller #etal -e%uire*ent


ile !o: 1=

Question .1/: If a W?S is $ritten usin) t&e 8#"WS 'rocess alone, is Tli*ited to 101T'er

QW=301 and tli*ited to 101t'er QW==032

-e'ly .1/: @es0

Question .2/: If a W?S is $ritten usin) +"W 'rocess alone, is Tli*ited to 2T'er QW=305and tli*ited to 2t'er QW==03

-e'ly .2/: @es0

Inter$ret%ti"n: IX&(+&(-Subject: QW21, #anufacturerHs or +ontractorHs -es'onsibility


6ack)round: " lar)e *ajority of fabrication, contracted by a desi)n +o*'any ", is 'erfor*ed

by #anufacturers 6 and +0 ac& co*'any is inde'endent in o$ners&i' fro* t&e ot&er t$o0

+o*'anies ", 6 and + &ae deelo'ed a Weldin) +oalition0 T&e to' *ana)e*ent of all t&reeco*'anies &as e4ecuted an ")ree*ent and +o**it*ent 'rotocol, consentin) to t&eestablis&*ent of t&e Weldin) +oalition0 T&e Weldin) +oalition controls all $eld 'rocedures

deelo'ed for use on +o*'any " contracts by +o*'anies 6 and +, under one desi)nated'ro)ra*0 T&e +oalition does not control 'roduction $eldin) at eit&er of t&e *anufacturin)

co*'anies0 Weld 'rocedure %ualifications 'erfor*ed by +o*'any + are controlled by +o*'any

"Hs Quality ?ro)ra*0 Weld 'rocedure %ualifications 'erfor*ed by +o*'any 6 are controlled by+o*'any 6Hs Quality ?ro)ra* t&at &as been a''roed by +o*'any "0 +o*'any + is on+o*'any 6Hs "''roed ;endors Kist0

Question: Is it 'er*issible to consider t&e Weldin) +oalition as t&e or)aniation $&ic& &asres'onsible o'erational control of 'roduction of t&e $eld*ents to be *ade in accordance $it&t&is +odeE, suc& t&at +o*'any 6 *ay use $eld 'rocedures %ualified by +o*'any + and ice

ersa


43/95

-e'ly: !o0

Inter$ret%ti"n: IX&(+&(/

Subject: QW19=, ;isual 4a*inations


ile !o: 19

Question: Is a $elderHs 'erfor*ance %ualification test cou'on, in $&ic& undercut is 'resent,acce'table, 'roided t&at t&e rest of t&e e4a*inations and tests are acce'table

-e'ly: @es0


44/95

Question: Is it t&e intent of Section IX t&at a ?Q- deelo'ed $it& a *ac&ine or auto*atic

8T"W &ardfacin) 'rocess, $it& or $it&out oscillation, *ay be used to %ualify a W?S for a*anual, or a se*iauto*atic 8T"W &ardfacin) 'rocess, $it& or $it&out $eae

-e'ly: @es0 !ote t&at recent actions by Section IX &ae defined oscillation as a''licable to

*ac&ine and auto*atic 'rocesses and $eae as a''licable to *anual and se*iauto*atic

'rocesses0

VOLUME )

Inter$ret%ti"n: IX&(+&('Subject: QW=202, #aterial 8rou'in)

Date Issued: June =, 21ile !o: 129

6ack)round: " ?Q- is %ualified on a ?!u*ber X *aterial to a ?!u*ber @ *aterial0

Question .1/: Does t&is ?Q- su''ort a W?S for $eldin) ?!u*ber X to S!u*ber @ $it&outc&an)es to any ot&er essential ariables

-e'ly .1/: @es0

Question .2/: Does t&is ?Q- su''ort a W?S for $eldin) S!u*ber X to S!u*ber @ $it&outc&an)es to any ot&er essential ariables

-e'ly .2/: @es0

Inter$ret%ti"n: IX&(+&(*

Subject: QW302, Transfer of -ecord of ?erfor*ance QualificationDate Issued: ebruary 2A, 21

ile !o: 13

Question: W&en a ne$ o$ner ac%uires a co*'any, or 'art of a co*'any, does QW302

'ro&ibit continued use of e4istin) $elder 'erfor*ance %ualifications

-e'ly: !o0 Section IX does not address rules a''licable to 'erfor*ance %ualification continuity

$&en a ne$ o$ner ac%uires a *anufacturer or contractor0 If $elder 'erfor*ance %ualificationcontinuity is to be *aintained by t&e ne$ o$ner, t&e Quality +ontrol Syste*GQuality "ssurance?ro)ra* s&ould reflect to t&e source of t&e $elder 'erfor*ance %ualification records as bein)

fro* t&e for*er *anufacturer or contractor0

Inter$ret%ti"n: IX&(+&(

Subject: QW3A, Weldin) ;ariablesDate Issued: ebruary 2A, 21

ile !o: 132

Question: " $elder $as %ualified to ?!o0 1 *aterial usin) t&e 8T"W 'rocess $it&out )asbackin) usin) !o0 A filler *aterial0 Is &e %ualified to $eld ?!o0 5 *aterial usin) t&e 8T"W


45/95

'rocess $it& )as backin) usin) !o0 A filler *aterial, 'roided all ot&er essential ariables

re*ain t&e sa*e

-e'ly: @es0

Inter$ret%ti"n: IX&(+&+(Subject: QW1== and QW19=, ;isual 4a*inationsDate Issued: ebruary 2A, 21ile !o: 173

Question: "re t&e re%uire*ents of QW1== and QW19= for isual e4a*ination of t&e testcou'on re%uired for t&e %ualifications of a $eldin) 'rocedure

-e'ly: !o0

Inter$ret%ti"n: IX&(+&++

Subject: QW1 and QW= in "rticle ;, Standard Weldin) ?rocedure S'ecificationsDate Issued: June =, 21

ile !o: 159

Question .1/: Pnder QW1.d/, is it acce'table to $eld t&e de*onstration test cou'on $it& only

8T"W if t&e SW?S is for co*bination 8T"W root and S#"W 715 fill

-e'ly .1/: !o0 "ll ariables of t&e SW?Ss are considered to be essential ariables0

Question .2/: Pnder QW1.d/, is it acce'table to $eld t&e de*onstration test cou'on $it& only

S#"W 715 if t&e SW?S is for co*bination 8T"W root and S#"W 715 fill


Question .3/: Pnder QW1.d/, is it acce'table to $eld t&e de*onstration test cou'on $it& onlyS#"W 715 if t&e SW?S s'ecifies bot& A1 and 715


Question .=/: Does Section IX, "rticle II a''ly $&en t&e fabricator c&ooses to use SW?Ss

-e'ly .=/: !o0 -ef0 'ara0 QW1010

Question ./: W&en usin) SW?Ss under "rticle ; of Section IX, *ay a sin)le $eldin) 'rocess

of a *ulti'le SW?Ss be used to co*'lete a $eld

-e'ly ./: !o0 -ef0 'aras0 QW=.a/ and .c/0

Question .A/: W&en usin) SW?Ss under "rticle ; of Section IX, *ay a sin)le 'rocess SW?S for

715 and a sin)le 'rocess SW?S for 8T"W be used to co*'lete a $eld, assu*in) all ot&er

ariables are $it&in t&e SW?S 'ara*eters

-e'ly .A/: !o0 -ef0 'aras0 QW=.a/ and .c/0


46/95

Question .7/: W&en usin) SW?Ss under "rticle ; of Section IX, *ay a sin)le 'rocess SW?S for715 and a sin)le 'rocess SW?S for A1 be used to co*'lete a $eld, assu*in) all ot&er

ariables are $it&in t&e SW?S 'ara*eters

-e'ly .7/: !o0 -ef0 'aras0 QW=.a/ and .c/0

Inter$ret%ti"n: IX&(+&+-Subject: QW32202.a/ and QW=201, -ule +&an)e "ffectin) Welder Qualification

Date Issued: June =, 21

ile !o: 121

6ack)round: "S# Section IX, 2 "ddenda, reised Table QW=201 reducin) t&e cou'onsie fro* in0 to L in0 to %ualify t&e $elder for #a4i*u* to be $eldedE $&en $eldin) a

*ini*u* of t&ree layers0

Question .1/: " $elder %ualified 'rior to t&e 2 "ddenda, and &as re*ained %ualified since &is

ori)inal test0


47/95

VOLUME 0(

Inter$ret%ti"n: IX&(+&+)

Subject: QW, T&e Pse of SW?Ss


ile !o: 1332

Question: #ay a *anufacturer or contractor ado't and use SW?Ss in accordance $it& t&e rulesof "rticle ; for $ork on +ode ite*s built to an edition or addenda 'rior to t&e 1995 edition $it&

t&e 2 "ddenda, 'roided t&e construction code does not 'ro&ibit t&e use of SW?Ss

-e'ly: @es0

Inter$ret%ti"n: IX&(+&+0Subject: QW302, *'loyerHs -es'onsibility


ile !o: 1A=1

6ack)round: Section IX re%uires t&at t&e *anufacturer, contractor, asse*bler, or installer be

res'onsible for conductin) tests to %ualify t&e 'erfor*ance of $elders $&ic& &is or)aniatione*'loys in construction of $eld*ents built in accordance $it& t&e +ode0E It also re%uires t&at

t&e *anufacturer, contractor, asse*bler, or installer 'roide su'erision and control oer $elders$&ile t&ey are $eldin) test cou'ons for 'erfor*ance %ualification0

Question .1/: "n e*'loyee of a contractor 'roides su'erision and control oer a $elder durin)

$eldin) of a test cou'on, but t&at $elder is not an e*'loyee of t&e contractor at t&e ti*e of t&e

test0 Is it re%uired t&at t&e $elder be an e*'loyee of t&at contractor at t&e ti*e of %ualificationtestin)

-e'ly .1/: !o0

Question .2/: #ust t&e $elder be an e*'loyee of any *anufacturer or contractor at t&e ti*e of%ualification testin)

-e'ly .2/: !o0

Inter$ret%ti"n: IX&(+&+

Subject: +ode +ase 21=21 and 21=31

Date Issued: Dece*ber 15, 21

ile !o: 1A=1

6ack)round: T&e sub*er)ed are $eldin) 'rocess is bein) used to de'osit corrosionresistant$eld oerlay for Section III, Subsection !6 fabrication usin) a !I+re alloy stri' filler *etaland flu4 co*bination0 T&e stri' filler *etal does not *eet t&e c&e*ical re%uire*ents of +ode

+ase 21=21 .bare electrode and rod/, but bot& filler *etal and $eld de'osit *eet t&e c&e*ical

co*'osition li*its of +ode +ase 21=31 .coered electrodes/0


48/95


49/95

-e'ly: @es0

Inter$ret%ti"n: IX&(+&+

Subject: QW220=.b/, Dissi*ilar 6ase #etal T&ickness


Question: Does QW220=.b/ 'er*it t&e *a4i*u* $eld de'osit t&ickness li*it to be e4tended

beyond t&e li*it s'ecified in QW=101

-e'ly: !o0 QW220= a''lies only to t&e base *etal t&ickness li*its0

Inter$ret%ti"n: IX&(+&-(Subject: QW103 and QW=201, ?!u*ber -eassi)n*ent


ile !o: 1513

Question .1/: #ay a 'rocedure %ualification record subject to ariable QW=701.a/ t&at

included only a ?W


50/95

-e'ly .2/: !o0

Question .3/: Do $elders *aintain t&eir %ualifications for se*iauto*atic 8#"W and +"W by

$eldin) $it& eit&er 8#"W or +"W durin) t&e si4*ont& 'eriod

-e'ly .3/: @es0

6ack)round Y.=/Z: " W?S $as %ualified usin) a Trade !a*e $ireflu4 co*bination t&atconfor*s to a classification in "S# Section II, ?art +0

Question .=/: Does t&e substitution in t&e %ualified W?S of a different Trade !a*e $ireflu4

co*bination t&at confor*s to t&e sa*e S" S'ecification and classification in "S# Section II,?art + re%uire re%ualification

-e'ly .=/: !o0

6ack)round Y./Z: T&e tensile s'eci*ens of a A ** ?Q- test 'late $as diided into t&ree

'ieces0 T&e su* of t&e t&ickness of t&e t&ree s'eci*ens $as less t&an A **0

Question ./: W&at is t&e allo$able 'ercenta)e t&ickness reduction fro* t&e ori)inal base *etal

t&ickness

-e'ly ./: Section IX does not address t&is issue0

Inter$ret%ti"n: IX&(+&--Subject: QW103 and QW=201, ?!u*ber -eassi)n*ent


ile !o: 1A79

Question: #ay a 'reious %ualified W?S, $ritten to 'er*it t&e $eldin) of ?!o0 , 8rou' 1*aterial to ?!o0 , 8rou' = *aterial 'rior to t&e establis&*ent of ?!os0 ", 6 and + be used

to $eld S"213 T22 to S"213 T91 *aterials

-e'ly: @es0

Inter$ret%ti"n: IX&(+&-/

Subject: QW220=, Dissi*ilar 6ase #etal T&icknessesDate Issued: #arc& 11, 22ile !o: 1759

Question: " W?S is %ualified to $eld base *aterial fro* 10A ** to 2 **0 #ay t&at W?S beused for $eldin) a 'art 3 ** t&ick t&at &as been ta'ered to 1 ** t&ick to anot&er 1 ** 'art

-e'ly: @es0

Inter$ret%ti"n: IX&(+&-)Subject: QW20=, I*'act Test Qualification of #ulti'rocess WeldsDate Issued: #arc& 11, 22


51/95

ile !o: 151=

Question: " $eldin) 'rocedure %ualification is *ade usin) *ulti'le $eldin) 'rocesses on a

sin)le test 'late for an a''lication $&ere notc&tou)&ness testin) is re%uired0 T&e $eld cou'on$as $elded $it& t$o 'asses, eac& of 8T"W and +"W, and t&e re*ainder $it& S"W 'rocess0

Is it re%uired to take *ulti'le sets of $eld *etal i*'act test s'eci*ens to include all $eldin)

'rocesses, $&en all $eldin) could not be included in a sin)le set of s'eci*ens

-e'ly: @es0

Inter$ret%ti"n: IX&(+&-0Subject: Section II, ?art +


Question: Does Section II, ?art + *andate t&e use of S"01

-e'ly: !o0

Inter$ret%ti"n: IX&(+&-Subject: QW103, T&e Pse of t&e -eferenced dition of t&e +ode

Date Issued: #arc& 11, 22ile !o: 152A

6ack)round: " desi)ner s'ecifies a s'ecific year of t&e "S# +ode to be co*'lied $it& for

t&e fabrication of a co*'onent, i0e0, includin) 9A "ddenda, and t&is co*'onent is installed in

230

Question .1/: W&at year of Section IX does t&e installer use for %ualifyin) $eldersG$eldin)o'erators

-e'ly .1/: Welders are %ualified in accordance $it& t&e current edition and addenda ofSection IX in effect at t&e ti*e of t&e %ualification0 See QW1030

Question .2/: W&at year of Section II does t&e installer use for 'urc&asin) $eldin) *aterials

-e'ly .2/: Section IX does not address t&is issue0 T&e %uestion s&ould be addressed to t&ea''licable construction code0

Inter$ret%ti"n: IX&(+&-'Subject: QW=201, !o*inal +ou'on T&ickness


Question: " $elder $elds a !?S A Sc&edule 5 test cou'on t&at is 0=32 in0 t&ick0


52/95

-e'ly: !o0 T&e no*inal cou'on t&ickness *ust be at least L in0 t&ick in order for a $elder to be

%ualified for *a4i*u* to be $eldedE0

VOLUME 0-

Inter$ret%ti"n: IX&(+&-*Subject: QW=90=, lectrical +&aracteristicsDate Issued: #ay 22, 22ile !o: 22A91

Question: Does QW=90= a''ly to t&e current ty'e used to 're&eat t&e filler *etal $ire $&en$eldin) 8T"W


53/95

-e'ly: !o0

Inter$ret%ti"n: IX&(+&/+Subject: QW=23, "lternate 6ase #aterials for Welder QualificationDate Issued: Dece*ber 3, 22ile !o: 22A9=

Question .1/: #ay a $elder $&o &as %ualified on a ?!u*ber base *etal $it&in t&e leftcolu*n of QW=23, $eld any co*bination of ?!u*ber base *etals in t&e corres'ondin) ro$

of t&e ri)&t colu*n, $it&in t&e li*its of t&e ot&er essential ariable li*its %ualified

-e'ly .1/: @es0

Question .2/: #ay a $elder $&o &as %ualified on a ?!u*ber base *etal $it&in t&e left

colu*n of QW=23, $eld one of t&e ?!u*ber base *etals in t&e corres'ondin) ro$ of t&eri)&t colu*n to any ot&er .dissi*ilar/ ?!u*ber in t&e corres'ondin) ro$ of t&e ri)&t colu*n,

$it&in t&e li*its of t&e ot&er essential ariable li*its %ualified

-e'ly .2/: @es0

Question .3/: #ay a $elder $&o &as %ualified on a ?!u*ber base *etal $it&in t&e left

colu*n of QW=23 $elded to an unassi)ned base *etal, $eld any co*bination of ?!u*berbase *etals in t&e corres'ondin) ro$ of t&e ri)&t colu*n to t&e unassi)ned *etal, $it&in t&e

li*its of t&e ot&er essential ariable li*its %ualified

-e'ly .3/: @es0

Inter$ret%ti"n: IX&(+&/-Subject: QW20=.b/, -oot ?ass ?rocedure QualificationDate Issued: Dece*ber 3, 22

ile !o: 23==9

Question: Do t&e 'roisions of QW20=.b/ 'er*it a 8T"W 'rocedure %ualification test

$eld*ent 'erfor*ed on a 13 ** t&ick cou'on to su''ort de'ositin) a root 'ass in a'roduction joint of t&e %ualified base *etal &ain) a t&ickness of 5 ** $&en i*'act testin) isre%uired

-e'ly: !o0 See QW=30A0

Inter$ret%ti"n: IX&(+&//Subject: QW253, Welds $it& 6utterin)


ile !o: 2359A


54/95

6ack)round: In all cases described belo$, t&e *anufacturers deelo' and follo$ W?Ss and

?Q-s based on t&e test cou'ons $elded0 T&e *ini*u* butterin) t&ickness in all cases $ill be)reater t&an 3G1A in0

Question .1/: #anufacturer " %ualifies a W?S by butterin) t&e ends of t&e test cou'ons, $&ic&

are t&e sa*e *aterial0 T&e buttered ends are &eat treated, t&en t&e $eld is co*'leted usin) t&e

sa*e filler *etal as $as used for t&e butterin)0 #anufacturer 6 $elds a )rooe $eld test cou'onof t&e sa*e best *etal usin) t&e sa*e 'rocess, filler *etal and ot&er essential ariables as*anufacturer "0 T&at test cou'on is &eat treated in t&e sa*e *anner as t&e &eat treat*ent usedfor t&e butterin) by *anufacturer "0 #ay *anufacturer " $eld 'arts t&at $ere buttered by

*anufacturer 6

-e'ly .1/: @es0

Question .2/: #anufacturer + $elds a )rooe $eld test cou'on usin) t&e sa*e base *etal,

'rocess, filler *etal, and ot&er essential ariables as *anufacturer "0 T&at test cou'on is &eattreated in t&e sa*e *anner as t&e &eat treat*ent used for butterin) by *anufacturer "0 #ay

*anufacturer " $eld 'arts t&at $ere buttered by *anufacturer +

-e'ly .2/: @es0

Question .3/: #anufacturer " receies 'arts t&at &ae been buttered by bot& *anufacturers 6and +0 #ay t&e 'arts buttered by *anufacturer 6 be $elded by *anufacturer " to 'arts buttered

by *anufacturer +

-e'ly .3/: @es0

Question .=/: #anufacturer D receies 'arts t&at &ae been buttered by *anufacturers ", 6 and

+0 #ay *anufacturer D $eld t&e buttered 'arts to)et&er usin) a buttered )rooe $eld testcou'on %ualified usin) t&e sa*e base *etal, 'rocess, filler *etal, and ot&er essential ariables as

*anufacturer "

-e'ly .=/: @es0

Question ./: #anufacturer D receies 'arts t&at &ae been buttered by *anufacturers ", 6 and

+0 #ay *anufacturer D $eld t&e buttered 'arts to)et&er usin) a )rooe $eld test cou'on%ualified in accordance $it& QW2530=.b/ usin) t&e sa*e 'rocess, filler *etal, and ot&er

essential ariables t&at *anufacturer " used to join t&e buttered 'arts .i0e0, t&e as$elded 'ortion

of t&e test/ usin) a base *etal t&at no*inally *atc&es t&e c&e*ical analysis of t&e butterin) usedby *anufacturer ", 6, or +

-e'ly ./: @es0

Question .A/: #anufacturer $elds a )rooe $eld test cou'on of anot&er base *etal usin) t&e

sa*e filler *etal as *anufacturer "0 T&at test cou'on is &eat treated and tested in accordance$it& QW2202.a/0 #ay *anufacturer , $&o &as $elded a test cou'on in accordance $it& QW2530=.b/, join 'arts buttered by *anufacturer

-e'ly .A/: @es0


55/95


56/95


ile !o: 2=195

6ack)round: or $elderHs 'erfor*ance %ualification, a *ulti'le layer )rooe $eld is *ade on asin)le test cou'on usin) one $elder for first layer and anot&er $elder for t&e second0

Question: QW310= re%uires a record of $elder 'erfor*ance %ualification0 #ay a sin)le for*be used to record t&e essential ariables, t&e ty'e of test and test results, and t&e ran)es %ualifiedin accordance $it& QW=2 for eac& $elder and $eldin) o'erator

-e'ly: Section IX s'ecifies infor*ation re%uired to be recorded, but does not s'ecify t&e for*at

of t&e records0

Inter$ret%ti"n: IX&(+&/'

Subject: QW==033, +&an)e in S" S'ecifications for iller #etal +lassification

Date Issued: #ay 19, 23ile !o: 32A3

Question: Does t&e e4'ression a c&an)e in t&e S" s'ecification filler *etal classificationErefer to a c&an)e in t&e "WS classification

-e'ly: @es0

Inter$ret%ti"n: IX&(+&/*

Subject: Section II, ?art +, S" 01, Table 1

Date Issued: #ay 19, 23ile !o: 327=

Question: #ay a $elder %ualify $it& 715 electrode usin) eit&er u'&ill or do$n&ill'ro)ression

-e'ly: @es0

Inter$ret%ti"n: IX&(+&/

Subject: QW=103, Su''le*ental ssential ;ariable .?rocedure/Date Issued: #ay 19, 23

ile !o: 3=A9

6ack)round: " co*'any &as %ualified a ?Q- to satisfy all testin) re%uire*ents ot&er t&an notc&tou)&ness for $eldin) ?1 8rou' 2 to ?1 8rou' 2 by t&e S"W 'rocess0 "not&er test cou'on is

subse%uently 're'ared usin) t&e W?S $ritten on t&e ori)inal ?Q- and an additional ?Q- is t&en

%ualified $it& only testin) for notc& tou)&ness, as allo$ed by t&e +ode, to su''le*ent t&eori)inal ?Q- for $eldin) $it& i*'act re%uire*ents0


57/95

Inter$ret%ti"n: IX&(+&)(

Subject: QW21GQW2101, #anufacturerHs or +ontractorHs -es'onsibilityDate Issued: #ay 19, 23

ile !o: 37=

6ack)round: Seeral *anufacturin) or)aniations $it&in t&e sa*e co*'any 'erfor* $eldin)'rocedure %ualifications in accordance $it& Section IX0 ac& *anufacturin) or)aniation'erfor*s t&ese actiities in accordance $it& s'ecific Quality "ssurance ?ro)ra*.s/GQuality

+ontrol Syste*.s/ t&at co*'ly $it& t&eir "S# +onstruction +ode +ertificate.s/ of

"ut&oriation and describe o'erational control of %ualifications0

Question: Is it 'er*itted for any of t&e *anufacturin) or)aniations $it&in t&e co*'any to useW?Ss and ?Q-s %ualified by any of t&e ot&er *anufacturin) or)aniations

-e'ly: @es, t&is is 'er*itted by QW210

VOLUME 0)

Inter$ret%ti"n: IX&()&(+Subject: QW1103, Tension Test Turned S'eci*en

Date Issued: Se'te*ber 1, 23ile !o: 235A

6ack)round: "S# Section IX, ?ara)ra'& QW1103.b/ states, [ or t&icknesses oer 1[ .2**/, *ulti'le s'eci*ens s&all be cut t&rou)& t&e full t&ickness of t&e $eld $it& t&eir centers

'arallel to t&e *etal surface and not oer 1[ .2 **/ a'art0 T&e centers of t&e s'eci*ens

adjacent to t&e *etal surface s&all not e4ceed G5[ .1A **/ fro* t&e surface0[

Question .1/: Does t&e s'ecified distance bet$een s'eci*ens of (not oer 1[ a'art( refer to t&edistance bet$een t&e centers of t&e s'eci*ens

-e'ly .1/: @es0

Question .2/:


58/95

ile !o: 3129

6ack)round: T&e elctrosla) $eldin) 'rocess is used to a''ly a corrosionresistant oerlay0 T&e

essential ariables in QW2501 a''ly0 QW=1035 is listed as an essential ariable for corrosionresistant oerlay0

Question .1/: W&en a sin)le layer is recorded in t&e ?Q-, is a W?S %ualified for a''lication of*ulti'le layers

-e'ly .1/: !o0

Question .2/: W&en *ulti'le layers are recorded in t&e ?Q-, is a W?S %ualified for a''licationof sin)le layer

-e'ly .2/: !o0

Inter$ret%ti"n: IX&()&(/

Subject: QW=701 , ?ost$eld


59/95

Question .2/: #ay t&ese t&ree ?Q-s be co*bined to su''ort $eldin) base *etal t&icknesses

of =05 t&rou)& 7 ** $it& or $it&out notc& tou)&ness

-e'ly .2/: @es0

N"te:T&is inter'retation ori)inally a''eared in ;olu*e =0 T&e W?E in Question .1/ &as

been corrected by rrata to read W?SE0

Inter$ret%ti"n: IX&()&(0

Subject: QW202.f/ and QW=1


Question: T$o se'arate ?Q-s $it& identical $eldin) 'rocess e4ist for a A ** and an 5 **

base *etal t&ickness0 #ay t&ese ?Q-s su''ort a W?S, $it& all t&e essential andsu''le*entary essential ariables unc&an)ed, to $eld a 25 ** t&ick

asme sec. ix interpretations 27171

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