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Ti nker AFB, OK TAFB Techni cal Spr ci f i cat i ons 2019

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WELDI NG PRESSURE PI PI NG

PART 1 GENERAL

1. 1 REFERENCES

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o wi t hi n t he t ext by t he basi c desi gnat i on onl y.

AMERI CAN PETROLEUM I NSTI TUTE ( API )

API St d 1104 ( 2013; Er r at a 1- 3 2014; Addendum 1 2014;

Er r at a 4 2015; Addendum 2 2016) Wel di ng of Pi pel i ne and Rel at ed Faci l i t i es

AMERI CAN SOCI ETY FOR NONDESTRUCTI VE TESTI NG ( ASNT)

ASNT SNT- TC- 1A ( 2016) Recommended Pr act i ce f or Per sonnel Qual i f i cat i on and Cer t i f i cat i on i n Nondest r uct i ve Test i ng

AMERI CAN WELDI NG SOCI ETY ( AWS)

AWS A2. 4 ( 2012) St andar d Symbol s f or Wel di ng, Br azi ng and Nondest r uct i ve Exami nat i on

AWS A3. 0M/ A3. 0 ( 2010) St andar d Wel di ng Ter ms and Definitions

AWS B2. 1/ B2. 1M ( 2014; Er r at a 2015) Speci f i cat i on f or Wel di ng Pr ocedur e and Per f or mance Qualification

AWS D1. 1/ D1. 1M ( 2015; Er r at a 1 2015; Er r at a 2 2016) St r uct ur al Wel di ng Code - St eel

AWS QC1 ( 2016) Speci f i cat i on f or AWS Cer t i f i cat i on of Wel di ng I nspect or s

AWS Z49. 1 ( 2012) Saf et y i n Wel di ng and Cut t i ng and Al l i ed Pr ocesses

ASME I NTERNATI ONAL ( ASME)

ASME B31. 1 ( 2016) Power Pi pi ng

ASME B31. 3 ( 2014) Pr ocess Pi pi ng

ASME B31. 4 ( 2016) Pi pel i ne Tr anspor t at i on Syst ems f or Li qui d Hydr ocar bons and Ot her Li qui d

ASME B31. 5 ( 2016) Ref r i ger at i on Pi pi ng and Heat Tr ansf er Component s

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ASME B31. 9 ( 2014) Bui l di ng Ser vi ces Pi pi ng

ASME BPVC SEC I ( 2010) BPVC Sect i on I - Rul es f or Const r uct i on of Power Boi l er s

ASME BPVC SEC I I - C ( 2010) BPVC Sect i on I I - Mat er i al s Par t C- Speci f i cat i ons f or Wel di ng Rods El ect r odes and Fi l l er Met al s

ASME BPVC SEC I X ( 2010) BPVC Sect i on I X- Wel di ng and Br azi ng Qualifications

ASME BPVC SEC V ( 2010) BPVC Sect i on V- Nondest r uct i ve Examination

U. S. NATI ONAL ARCHI VES AND RECORDS ADMI NI STRATI ON ( NARA)

29 CFR 1910 Occupat i onal Saf et y and Heal t h St andar ds

29 CFR 1926 Saf et y and Heal t h Regul at i ons f or Construction

1. 2 RELATED REQUI REMENTS

Sect i on 23 03 00. 00 20 BASI C MECHANI CAL MATERI ALS AND METHODS appl i es t o t hi s sect i on wi t h t he addi t i ons and modi f i cat i ons speci f i ed her ei n.

1. 3 DEFINITIONS

AWS A3. 0M/ A3. 0 and appl i cabl e ANSI pi pi ng document s.

1. 4 SUBMITTALS

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or Cont r act or Qual i t y Cont r ol appr oval . Submi t t al s wi t h an " S" ar e f or i ncl usi on i n t he Sust ai nabi l i t y Not ebook, i n conf or mance t o Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG.

Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00 SUBMI TTAL

PROCEDURES:

SD- 02 Shop Dr awi ngs

Wel di ng pr essur e pi pi ng

SD- 07 Cer t i f i cat es

Wel di ng pr ocedur es qual i f i cat i on

Nondest r uct i ve exami nat i on ( NDE) pr ocedur es

NDE per sonnel cer t i f i cat i on pr ocedur es

I nspect or cer t i f i cat i on

Submi t i nspect or cer t i f i cat i on and NDE per sonnel cer t i f i cat i on f or r ecor d.

SD- 11 Cl oseout Submi t t al s

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Wel d i dent i f i cat i ons

1. 5 QUALI TY ASSURANCE

1. 5. 1 Wel di ng Pr essur e Pi pi ng

Show l ocat i on, l engt h, and t ype of wel ds, and i ndi cat e post wel d heat t r eat ment and nondest r uct i ve t est i ng as r equi r ed.

1. 5. 2 Procedures

Devel op and qual i f y pr ocedur es f or wel di ng met al s i ncl uded i n t he wor k.

Do not st ar t wel di ng unt i l wel di ng pr ocedur es, wel der s, and wel di ng oper at or s have been qual i f i ed. Per f or m qual i f i cat i on t est i ng by an appr oved t est i ng l abor at or y, or by t he Cont r act or i f appr oved by t he Cont r act i ng Of f i cer i n accor dance wi t h t he qual i f i ed pr ocedur es. Not i f y t he Cont r act i ng Of f i cer at l east 24 hour s i n advance of t he t i me and pl ace of t he t est s. When pr act i cabl e, per f or m t he qual i f i cat i on t est s at or near t he wor k s i t e. Mai nt ai n cur r ent r ecor ds of t he t est r esul t s obt ai ned i n wel di ng pr ocedur e, wel di ng oper at or / wel der per f or mance qual i f i cat i ons, and nondest r uct i ve exami nat i on ( NDE) pr ocedur es. These r ecor ds shal l be r eadi l y avai l abl e at t he s i t e f or exami nat i on by t he Cont r act i ng Of f i cer .

Qual i f y t he pr ocedur es f or maki ng t r ansi t i on wel ds bet ween di f f er ent mat er i al s or bet ween pl at es or pi pes of di f f er ent wal l t hi cknesses. ANSI Pi pi ng r equi r ement s f or br anch connect i ons may be used i n l i eu of det ai l ed desi gns. Unl ess ot her wi se speci f i ed, t he choi ce of wel di ng pr ocess shal l be t he r esponsi bi l i t y of t he Cont r act or .

1. 5. 2. 1 Pr evi ous Qual i f i cat i ons

Wel di ng pr ocedur es, wel der s, and wel di ng oper at or s pr evi ousl y qual i f i ed by t est may be accept ed f or t he wor k wi t hout r equal i f i cat i on pr ovi ded t hat t he f ol l owi ng condi t i ons ar e f ul f i l l ed:

a. Copi es of wel di ng pr ocedur es, pr ocedur e qual i f i cat i on t est r ecor ds, and wel der and wel di ng oper at or per f or mance qual i f i cat i on t est r ecor ds ar e submi t t ed and appr oved i n accor dance wi t h t he par agr aph ent i t l ed "Submittals."

b. Test i ng was per f or med by an appr oved t est i ng l abor at or y or t echni cal consul t ant or by t he Cont r act or ' s appr oved qual i t y cont r ol organization.

c. The wel di ng pr ocedur es, wel der s, and wel di ng oper at or s wer e qual i f i ed i n accor dance wi t h ASME BPVC SEC I X or AWS B2. 1/ B2. 1M, AR- 2 l evel ; and base mat er i al s, f i l l er mat er i al s, el ect r odes, equi pment , and pr ocesses conf or med t o t he appl i cabl e r equi r ement s of t hi s speci f i cat i on.

d. The r equi r ement s of par agr aph ent i t l ed " Wel der and Wel di ng Oper at or Per f or mance Qual i f i cat i on" f or r enewal of qual i f i cat i on wer e met , and r ecor ds showi ng name of empl oyer and per i od of empl oyment usi ng t he pr ocess f or whi ch qual i f i ed ar e submi t t ed as evi dence of conf or mance.

1. 5. 2. 2 Performance

The Cont r act or shal l be r esponsi bl e f or t he qual i t y of j oi nt pr epar at i on, wel di ng, and exami nat i on. Cl ear l y i dent i f y and r ecor d mat er i al s used i n t he wel di ng oper at i ons. The exami nat i on and t est i ng def i ned i n t hi s speci f i cat i on ar e mi ni mum r equi r ement s. Pr ovi de addi t i onal exami nat i on

Apr i l 2019 Page 3 SECTI ON 40 17 26. 00 20 and t est i ng as necessar y t o achi eve t he qual i t y r equi r ed.

1. 5. 3 Wel di ng Pr ocedur es Qual i f i cat i on

Qual i f i cat i on of t he wel di ng pr ocedur es f or each gr oup of mat er i al s t o be wel ded i s r equi r ed as i ndi cat ed i n ASME BPVC SEC I X. Recor d i n det ai l and qual i f y t he " Wel di ng Pr ocedur e Speci f i cat i ons" f or ever y wel di ng pr ocedur e pr oposed. Qual i f i cat i on f or each wel di ng pr ocedur e shal l conf or m t o t he r equi r ement s of ANSI St andar ds and t o t hi s speci f i cat i on. The wel di ng pr ocedur es shal l speci f y end pr epar at i on f or wel ds, i ncl udi ng cl eani ng, al i gnment s, and r oot openi ngs. Pr eheat , i nt er pass t emper at ur e cont r ol , and post heat t r eat ment of wel ds shal l be as r equi r ed by ANSI Pi pi ng document s, unl ess ot her wi se i ndi cat ed or speci f i ed. Descr i be t he t ype of backi ng r i ngs or consumabl e i nser t s, i f used, and, i f t hey ar e t o be r emoved, t he r emoval pr ocess. Wel di ng pr ocedur e qual i f i cat i ons shal l be i dent i f i ed i ndi v i dual l y and r ef er enced on t he shop dr awi ngs or sui t abl y keyed t o t he cont r act dr awi ngs.

1. 5. 4 Wel der and Wel di ng Oper at or Per f or mance Qual i f i cat i on

Qual i f y each wel der and wel di ng oper at or assi gned t o wor k cover ed by t hi s speci f i cat i on by per f or mance t est s usi ng equi pment , posi t i ons, pr ocedur es, base met al s, and el ect r odes or bar e f i l l er wi r es f r om t he same speci f i cat i on, c l assi f i cat i on, or gr oup number t hat wi l l be encount er ed on hi s assi gnment . Wel der s or wel di ng oper at or s who make accept abl e pr ocedur e qual i f i cat i on t est s wi l l be consi der ed per f or mance- qual i f i ed f or t he wel di ng pr ocedur e used. Det er mi ne per f or mance qual i f i cat i on i n accor dance wi t h ASME BPVC SEC I X, ANSI Pi pi ng St andar ds and as speci f i ed.

1. 5. 5 Renewal of Qual i f i cat i on

Requal i f i cat i on of a wel der or wel di ng oper at or shal l be r equi r ed under one or any combi nat i on of t he f ol l owi ng condi t i ons:

a. When a wel der or wel di ng oper at or has not used t he speci f i c wel di ng pr ocess f or a per i od of 3 mont hs. The per i od may be ext ended t o 6 mont hs i f t he wel der has been empl oyed on anot her wel di ng pr ocess.

b. Ther e i s speci f i c r eason t o quest i on t he wel der ' s abi l i t y t o make wel ds t hat wi l l meet t he r equi r ement s of t he speci f i cat i ons.

c. The wel der or wel di ng oper at or was qual i f i ed by an empl oyer ot her t han t hose f i r ms per f or mi ng wor k under t hi s cont r act and a qual i f i cat i on t est has not been t aken wi t hi n t he pr ecedi ng 12 mont hs. Renewal of qual i f i cat i on under t hi s condi t i on need be made on onl y a s i ngl e t est j oi nt or pi pe of any t hi ckness, posi t i on, or mat er i al t o r eest abl i sh qual i f i cat i on f or any t hi ckness, posi t i on, or mat er i al f or whi ch t he wel der or wel di ng oper at or had qual i f i ed pr evi ousl y.

1. 5. 6 Qual i f i cat i on of I nspect i on and ( NDE) Per sonnel

Qual i f i cat i on of I nspect i on and Nondest r uct i ve Exami nat i on ( NDE) Per sonnel : Qual i f y i nspect i on and nondest r uct i ve exami nat i on per sonnel i n accor dance wi t h t he f ol l owi ng r equi r ement s:

1. 5. 6. 1 I nspect or Cer t i f i cat i on

Qual i f y wel di ng i nspect or s i n accor dance wi t h AWS QC1.

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1. 5. 6. 2 NDE Per sonnel Cer t i f i cat i on Pr ocedur es

Cer t i f y NDE per sonnel and est abl i sh a wr i t t en pr ocedur e f or t he cont r ol and admi ni st r at i on of NDE per sonnel t r ai ni ng, exami nat i on, and cer t i f i cat i on. Base pr ocedur es on appr opr i at e speci f i c and gener al gui del i nes of t r ai ni ng and exper i ence r ecommended by ASNT SNT- TC- 1A, Suppl ement A- Radi ogr aphi c, Suppl ement B- Magnet i c par t i c l e, Suppl ement C- Ul t r asoni c, and Suppl ement D- Li qui d Penet r ant .

1. 5. 6. 3 Wel di ng Pr ocedur es and Qual i f i cat i ons

a. Speci f i cat i ons and Test Resul t s: Submi t copi es of t he wel di ng pr ocedur e speci f i cat i ons and pr ocedur e qual i f i cat i on t est r esul t s f or each t ype of wel di ng r equi r ed. Appr oval of any pr ocedur e does not r el i eve t he Cont r act or of t he r esponsi bi l i t y f or pr oduci ng accept abl e wel ds. Submi t t hi s i nf or mat i on on t he f or ms pr i nt ed i n ASME BPVC SEC I X or t hei r equi val ent .

b. Cer t i f i cat i on: Bef or e assi gni ng wel der s or wel di ng oper at or s t o t he wor k, submi t t hei r names, t oget her wi t h cer t i f i cat i on t hat each i ndi v i dual i s per f or mance qual i f i ed as speci f i ed. Do not st ar t wel di ng wor k pr i or t o pr ocedur e qual i f i cat i on. The cer t i f i cat i on shal l st at e t he t ype of wel di ng and posi t i ons f or whi ch each i s qual i f i ed, t he code and pr ocedur e under whi ch each i s qual i f i ed, dat e qual i f i ed, and t he f i r m and i ndi v i dual cer t i f y i ng t he qual i f i cat i on tests.

1. 5. 7 Symbols

Conf or m t o AWS A2. 4.

1. 5. 7. 1 Wel d I dent i f i cat i ons

Submi t a l i s t of t he wel der s ' names and symbol f or each wel der . To i dent i f y wel ds, submi t wr i t t en r ecor ds i ndi cat i ng t he l ocat i on of wel ds made by each wel der or wel di ng oper at or .

1. 5. 8 Safety

Conf or m t o AWS Z49. 1, 29 CFR 1910- SUBPART Q, " Wel di ng, Cut t i ng, and Brazing," 29 CFR 1926- SUBPART J, " Wel di ng and Cut t i ng. "

1. 6 ENVIRONMENTAL

Do not per f or m wel di ng when t he qual i t y of t he compl et ed wel d coul d be i mpai r ed by t he pr evai l i ng wor ki ng or weat her condi t i ons. The Cont r act i ng Of f i cer wi l l det er mi ne when weat her or wor ki ng condi t i ons ar e unsui t abl e f or wel di ng.

1. 7 DELI VERY AND STORAGE

Del i ver f i l l er met al s, el ect r odes, f l uxes and ot her wel di ng mat er i al s t o t he s i t e i n manuf act ur er s ' or i gi nal packages and st or e i n a dr y space unt i l used. Label and desi gn packages pr oper l y t o gi ve maxi mum pr ot ect i on f r om moi st ur e and t o assur e saf e handl i ng.

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PART 2 PRODUCTS

2. 1 WELDI NG MATERI ALS

Compl y wi t h ASME BPVC SEC I I - C. Wel di ng equi pment , el ect r odes, wel di ng wi r e, and f l uxes shal l be capabl e of pr oduci ng sat i sf act or y wel ds when used by a qual i f i ed wel der or wel di ng oper at or usi ng qual i f i ed wel di ng procedures.

PART 3 EXECUTI ON

3. 1 WELDING

Do not devi at e f r om appl i cabl e codes, appr oved pr ocedur es and appr oved shop dr awi ngs wi t hout pr i or wr i t t en appr oval f r om t he Cont r act i ng Of f i cer .

Mat er i al s or component s wi t h wel ds made of f t he s i t e wi l l not be accept ed i f t he wel di ng does not conf or m t o t he r equi r ement s of t hi s speci f i cat i on unl ess ot her wi se speci f i ed. Assi gn each wel der or wel di ng oper at or an i dent i f y i ng number , l et t er , or symbol t hat shal l be used t o i dent i f y hi s wel ds. Each wel der or wel di ng oper at or shal l appl y hi s mar k adj acent t o hi s wel d usi ng an appr oved r ubber st amp or f el t - t i pped mar ker wi t h per manent , weat her pr oof i nk or ot her appr oved met hods t hat do not def or m t he met al . For seam wel ds, pl ace i dent i f i cat i on mar ks adj acent t o t he wel ds at 3 f oot i nt er val s. Conf i ne i dent i f i cat i on by di e st amps or el ect r i c et cher s t o t he wel d r ei nf or ci ng cr own, pr ef er abl y i n t he f i ni shed crater.

3. 2 WELDI NG OPERATORS

Per f or m wel di ng i n accor dance wi t h qual i f i ed pr ocedur es usi ng qual i f i ed wel der s and wel di ng oper at or s.

3. 3 SUPPORTS

Wel di ng of hanger s, suppor t s, and pl at es t o st r uct ur al member s shal l conf or m t o AWS D1. 1/ D1. 1M.

3. 4 EXAMI NATI ONS AND TESTS

Vi sual and nondest r uct i ve exami nat i ons shal l be per f or med by t he Cont r act or t o det ect sur f ace and i nt er nal di scont i nui t i es i n compl et ed wel ds.

Empl oy t he ser vi ces of a qual i f i ed commer ci al i nspect i on or t est i ng l abor at or y or t echni cal consul t ant appr oved by t he Cont r act i ng Of f i cer .

Vi sual l y exami ne wel ds Radi ogr aphi c, Li qui d penet r ant , Magnet i c par t i c l e, or Ul t r asoni c exami nat i on shal l be r equi r ed as i ndi cat ed i n Tabl es I V and V at t ached t o t hi s sect i on or i n accor dance wi t h ot her sect i ons wher e det ai l ed r equi r ement s ar e speci f i ed. Random NDE t est i ng appl i es t o ASME B31. 3 and ASME B31. 4 pi pi ng unl ess speci f i ed ot her wi se. When exami nat i on and t est i ng i ndi cat es def ect s i n a wel d j oi nt , a qual i f i ed wel der shal l r epai r t he wel d i n accor dance wi t h t he par agr aph ent i t l ed " Cor r ect i ons and Repai r s" of t hi s sect i on.

3. 4. 1 Random NDE Test i ng

When r adi ogr aphi c, l i qui d penet r ant , magnet i c par t i c l e, or ul t r asoni c exami nat i on i s r equi r ed, t est a mi ni mum of 10 per cent of t he t ot al l engt h or number of pi pi ng wel ds. Randoml y sel ect t he wel ds exami ned, but i ncl ude an exami nat i on of wel ds made by each wel di ng oper at or or wel der .

I f r andom t est i ng r eveal s t hat a wel d f ai l s t o meet mi ni mum qual i t y

Apr i l 2019 Page 6 SECTI ON 40 17 26. 00 20 r equi r ement s, exami ne an addi t i onal 10 per cent of t he wel ds i n t hat same gr oup. I f t he addi t i onal wel ds exami ned meet t he qual i t y r equi r ement s, t he ent i r e gr oup of wel ds r epr esent ed shal l be accept ed and t he def ect i ve wel ds shal l be r epai r ed. I f any of t he addi t i onal wel ds exami ned al so f ai l t o meet t he qual i t y r equi r ement s, t hat ent i r e gr oup of wel ds shal l be r ej ect ed. Remove and r ewel d r ej ect ed wel ds or exami ne r ej ect ed wel ds 100 per cent and r emove and r ewel d def ect s.

3. 4. 2 Vi sual Exami nat i on

Vi sual l y exami ne wel ds as f ol l ows:

a. Bef or e wel di ng - - f or compl i ance wi t h r equi r ement s f or j oi nt pr epar at i on, pl acement of backi ng r i ngs or consumabl e i nser t s, al i gnment and f i t - up, and cl eanl i ness.

b. Dur i ng wel di ng - - f or conf or mance t o t he qual i f i ed wel di ng pr ocedur e.

c. Af t er wel di ng - - f or cr acks, cont our and f i ni sh, bead r ei nf or cement , under cut t i ng, over l ap, and si ze of f i l l et wel ds.

3. 4. 3 Nondest r uct i ve Exami nat i on

NDE shal l be i n accor dance wi t h wr i t t en pr ocedur es. Pr ocedur es f or r adi ogr aphi c, l i qui d penet r ant , magnet i c par t i c l e, or ul t r asoni c t est s and met hods shal l conf or m t o ASME BPVC SEC V. The appr oved pr ocedur e shal l be demonst r at ed t o t he sat i sf act i on of t he Cont r act i ng Of f i cer ' s QA per sonnel .

I n addi t i on t o t he i nf or mat i on r equi r ed i n ASME BPVC SEC V, t he wr i t t en pr ocedur es shal l i ncl ude:

a. Ti mi ng of t he nondest r uct i ve exami nat i on i n r el at i on t o t he wel di ng operations.

b. Saf et y pr ecaut i ons.

3. 4. 4 Exami nat i ons and Test s by t he Gover nment

Exami nat i ons and t est s wi l l conf or m t o par agr aphs " Vi sual Exami nat i on" and " Nondest r uct i ve Exami nat i on" of t hi s sect i on, except t hat dest r uct i ve t est s may be r equi r ed al so. When dest r uct i ve t est s ar e made, qual i f i ed wel der s or wel di ng oper at or s shal l make r epai r s usi ng wel di ng pr ocedur es whi ch wi l l devel op t he f ul l st r engt h of t he member s cut . Wel di ng shal l be subj ect t o exami nat i on and t est s i n t he mi l l , shop, and f i el d.

3. 4. 5 Pi pi ng Subj ect t o 100 Per cent NDE

ASME B31. 4 and ASME B31. 3 Pi pi ng Subj ect t o 100 Per cent NDE: 100 per cent of each day' s gi r t h wel ds i nst al l ed i n t he f ol l owi ng l ocat i ons shal l be nondest r uct i vel y exami ned 100 per cent by r adi ogr aphi c, magnet i c par t i c l e, or l i qui d penet r ant exami nat i on unl ess i mpr act i cabl e, i n whi ch case at l east 90 per cent must be exami ned. Nondest r uct i ve exami nat i on must be i mpr act i cabl e f or each gi r t h wel d not exami ned.

a. At onshor e l ocat i ons wher e a l oss of hazar dous l i qui d ( pet r ol eum, pet r ol eum pr oduct s, or anhydr ous ammoni a) coul d r easonabl y be expect ed t o pol l ut e st r eam, r i ver , l ake, r eser voi r , or ot her body of wat er , and any of f shor e ar ea;

b. Wi t hi n r ai l r oad or publ i c r oad r i ght s- of - way;

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c. At over head r oad cr ossi ngs and wi t hi n t unnel s;

d. Wi t hi n t he l i mi t s of any i ncor por at ed subdi v i s i on of a St at e gover nment ; and

e. Wi t hi n popul at ed ar eas, i ncl udi ng, but not l i mi t ed t o, r esi dent i al subdi v i s i ons, shoppi ng cent er s, school s, desi gnat ed commer ci al ar eas, i ndust r i al f aci l i t i es, publ i c i nst i t ut i ons, and pl aces of publ i c assembly.

3. 5 ACCEPTANCE STANDARDS

3. 5. 1 Visual

The f ol l owi ng i ndi cat i ons ar e unaccept abl e:

a. Cr acks- - ext er nal sur f ace.

b. Under cut on sur f ace whi ch i s gr eat er t han 1/ 32 i nchdeep or 25 per cent for ASME B31. 3 and 12. 5 per cent f or ASME B31. 4 and ASME B31. 9 of t he wal l t hi ckness, whi chever i s l ess, pr ovi ded t hat t he r emai ni ng wal l t hi ckness i s not l ess t han t he mi ni mum desi gn t hi ckness. For ASME B31. 4 and i n accor dance wi t h API St d 1104, under cut s over 1/ 64 i nch t hr ough 1/ 32 i nch or over 6 t o 12. 5 per cent of t he pi pe wal l t hi ckness, whi chever i s smal l er , shal l not exceed 2 i nches i n a cont i nuous wel d l engt h of 12 i nches or 1/ 6 t he l engt h of t he wel d, whi chever i s smal l er ; and under cut s 1/ 64 i nch or 6 per cent of t he wal l t hi ckness, whi chever i s smal l er , ar e accept abl e r egar dl ess of l engt h.

c. Wel d r ei nf or cement :

( 1) ASME B31. 1, conf or m t o Tabl e I .

TABLE I REI NFORCEMENT OF GI RTH AND LONGI TUDI NAL BUTT WELDS

Maxi mum Thi ckness of Rei nf or cement f or Desi gn Temperature

Thi ckness of Base Met al , i nches

Gr eat er t han 750 degr ees F

350 degr ees F - 750 degr ees F

Less t han 350 degr ees C inch inch inch

Up t o 1/ 8, i ncl . 1/16 3/32 3/16

Over 1/ 8 t o 3/ 16, i ncl . 1/16 1/8 3/16

Over 3/ 16 t o 1/ 2, i ncl . 1/16 5/32 3/16

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TABLE I REI NFORCEMENT OF GI RTH AND LONGI TUDI NAL BUTT WELDS

Maxi mum Thi ckness of Rei nf or cement f or Desi gn Temperature

Thi ckness of Base Met al , i nches

Gr eat er t han 750 degr ees F

350 degr ees F - 750 degr ees F

Less t han 350 degr ees C inch inch inch

Over 1/ 2 t o 1, i ncl . 3/32 3/16 3/16

Over 1 t o 2, i ncl . 1/8 1/4 1/4

Over 2 5/32 The gr eat er of 1/ 4 i nch or 1/ 8 t i mes t he wi dt h of t he wel d i n inches.

NOTES:

1. For doubl e wel ded but t j oi nt s, t hi s l i mi t at i on on r ei nf or cement gi ven above shal l appl y separ at el y t o bot h i nsi de and out si de sur f aces of t he joint.

2. For s i ngl e wel ded but t j oi nt s, t he r ei nf or cement l i mi t s gi ven above shal l appl y t o t he out si de sur f ace of t he j oi nt onl y.

3. The t hi ckness of wel d r ei nf or cement shal l be based on t he t hi ckness of t he t hi nner of t he mat er i al s bei ng j oi ned.

4. The wel d r ei nf or cement t hi cknesses shal l be det er mi ned f r om t he hi gher of t he abut t i ng sur f aces i nvol ved.

5. Wel d r ei nf or cement may be r emoved i f so desi r ed.

( 2) ASME B31. 3, conf or m t o Tabl e I I .

TABLE I I

Wal l Thi ckness, i nches Hei ght , i nches

Less t han or equal t o 1/ 4 Less t han or equal t o 1/ 16

Gr eat er t han 1/ 4, i s l ess t han or equal t o 1/2

Less t han or equal t o 1/ 8

Gr eat er t han 1/ 2, i s l ess t han or equal t o 1 Less t han or equal t o 5/ 32

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TABLE I I

Wal l Thi ckness, i nches Hei ght , i nches

Gr eat er t han 1 Less t han or equal t o 3/ 16

NOTES:

1. Wal l t hi ckness i s t he nomi nal wal l t hi ckness of t he t hi nner of component s j oi ned by but t wel d.

2. Hei ght : For " Nor mal Ser vi ce" and " Sever e Cycl i c" condi t i ons, use t he l i st ed val ue. For " Cat egor y D Fl ui d Ser vi ce, " use t wi ce t he l i st ed val ue. Measur e f r om sur f aces of adj acent component s. The l esser of t he t wo measur ement s, i n any pl ane t hr ough t he wel d, shal l not exceed t he appl i cabl e val ue at r i ght . Wel d met al shal l mer ge smoot hl y i nt o component sur f aces.

( 3) ASME B31. 4, conf or m t o Tabl e I f or under 350 degr ees F.

( 4) ASME B31. 5, conf or m t o Tabl e I I I .

TABLE I I I

Pi pe Wal l Thi ckness, i nches Reinforcement Thi ckness, i nches

1/ 4 and under 1/16

Over 1/ 4 t hr ough 1/ 2 3/32

Over 1/ 2, t hr ough 1 1/8

Over 1 3/16

( 5) ASME B31. 9: Thi ckness of wel d r ei nf or cement shal l not exceed 3/ 16 i nch.

d. Lack of f usi on on sur f ace.

e. I ncompl et e penet r at i on ( appl i es onl y when i nsi de sur f ace i s r eadi l y accessible).

f . Convexi t y of f i l l et wel d sur f ace gr eat er t han 10 per cent of l ongest l eg pl us 0. 03 i nch.

g. Concavi t y i n gr oove wel ds.

h. Concavi t y i n f i l l et wel ds gr eat er t han 1/ 16 i nch.

i . Fi l l et wel d s i ze l ess t han i ndi cat ed or gr eat er t han 1 1/ 4 t i mes t he mi ni mum speci f i ed f i l l et l eg l engt h.

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3. 5. 2 Magnet i c Par t i c l e Exami nat i on

The f ol l owi ng r el evant i ndi cat i ons ar e unaccept abl e:

a. Any cr acks and l i near i ndi cat i ons.

b. Rounded i ndi cat i ons wi t h di mensi ons gr eat er t han 3/ 16 i nch.

c. Four or mor e r ounded i ndi cat i ons i n a l i ne separ at ed by 1/ 16 i nch or l ess edge- t o- edge.

d. Ten or mor e r ounded i ndi cat i ons i n any 6 squar e i nches of sur f ace, wi t h t he maj or di mensi on of t hi s ar ea not t o exceed 6 i nches, wi t h t he ar ea t aken i n t he most unf avor abl e l ocat i on r el at i ve t o t he i ndi cat i ons bei ng eval uat ed.

3. 5. 3 Li qui d Penet r ant Exami nat i on

I ndi cat i ons whose maj or di mensi ons ar e gr eat er t han 1/ 16 i nch shal l be consi der ed r el evant . The f ol l owi ng r el evant i ndi cat i ons ar e unaccept abl e:

a. Any cr acks or l i near i ndi cat i ons.

b. Rounded i ndi cat i ons wi t h di mensi ons gr eat er t han 3/ 16 i nch.

c. Four or mor e r ounded i ndi cat i ons i n a l i ne separ at ed by 1/ 16 i nch or l ess edge- t o- edge.

d. Ten or mor e r ounded i ndi cat i ons i n any 6 squar e i nches of sur f ace, wi t h t he maj or di mensi on of t hi s ar ea not t o exceed 6 i nches, wi t h t he ar ea t aken i n t he most unf avor abl e l ocat i on r el at i ve t o t he i ndi cat i ons bei ng eval uat ed.

3. 5. 4 Radiography

Wel ds t hat ar e shown by r adi ogr aphy t o have any of t he f ol l owi ng di scont i nui t i es ar e unaccept abl e:

a. Any t ype of cr ack or zone of i ncompl et e f usi on or penet r at i on.

b. Any ot her el ongat ed i ndi cat i on whi ch has a l engt h gr eat er t han:

( 1) 1/ 4 i nch f or t up t o 3/ 4 i nch, i ncl usi ve;

( 2) 1/ 3 t f or t f r om 3/ 4 i nch t o 2 1/ 4 i nches, i ncl usi ve;

( 3) 3/ 4 i nch f or t over 2 1/ 4 i nches wher e t i s t he t hi ckness of t he t hi nner por t i on of t he wel d.

( " t " per t ai ns t o t he t hi ckness of t he wel d bei ng exami ned. I f a wel d j oi ns t wo member s havi ng di f f er ent t hi ckness at t he wel d, " t " i s t he t hi nner of t hese t wo t hi cknesses. )

c. Any gr oup of i ndi cat i ons i n l i ne t hat have an aggr egat e l engt h gr eat er t han t i n a l engt h of 12t , except wher e t he di st ance bet ween t he successi ve i ndi cat i ons exceeds 6L wher e L i s t he l ongest i ndi cat i on i n t he gr oup.

d. Por osi t y i n excess of t hat shown accept abl e i n Appendi x A- 250, Apr i l 2019 Page 11 SECTI ON 40 17 26. 00 20

Accept ance St andar d f or Radi ogr aphi cal l y Det er mi ned Rounded I ndi cat i ons i n Wel ds, ASME BPVC SEC I .

3. 5. 5 Ul t r asoni c Exami nat i on

Per mi t t ed f or ASME B31. 3 and ASME B31. 4 pi pi ng onl y. Li near t ype di scont i nui t i es ar e unaccept abl e i f t he ampl i t ude exceeds t he r ef er ence l evel and di scont i nui t i es have l engt hs whi ch exceed t he f ol l owi ng:

a. 1/ 4 i nch f or t up t o 3/ 4 i nch

b. 1/ 3 t f or t f r om 3/ 4 i nch t o 2 1/ 4 i nches

c. 3/ 4 i nch f or t over 2 1/ 4 i nches

( " t " i s t he t hi ckness of t he wel d bei ng exami ned. I f t he wel d j oi ns t wo member s havi ng di f f er ent t hi ckness at t he wel d, " t " i s t he t hi nner of t hese t wo t hi cknesses. Di scont i nui t i es ar e i nt er pr et ed t o be cr acks, l ack of f usi on, and i ncompl et e penet r at i on ar e unaccept abl e r egar dl ess of length.)

3. 6 CORRECTI ONS AND REPAI RS

Remove def ect s and r epl ace wel ds as speci f i ed i n ANSI Pi pi ng St andar ds , unl ess ot her wi se speci f i ed. Repai r def ect s di scover ed bet ween wel d passes bef or e addi t i onal wel d mat er i al i s deposi t ed. Wher ever a def ect i s r emoved, and r epai r by wel di ng i s not r equi r ed, t he af f ect ed ar ea shal l be bl ended i nt o t he sur r oundi ng sur f ace el i mi nat i ng shar p not ches, cr evi ces, or cor ner s. Af t er def ect r emoval i s compl et e and bef or e r ewel di ng, r eexami ne t he ar ea by t he same t est met hods whi ch f i r st r eveal ed t he def ect t o ensur e t hat t he def ect has been el i mi nat ed. Af t er r ewel di ng, r eexami ne t he r epai r ed ar ea by t he same t est met hods or i gi nal l y used f or t hat ar ea. For r epai r s t o base mat er i al , t he mi ni mum exami nat i on shal l be t he same as r equi r ed f or but t wel ds. I ndi cat i on of a def ect shal l be r egar ded as a def ect unl ess r eeval uat i on by NDE or by sur f ace condi t i oni ng shows t hat no unaccept abl e i ndi cat i ons ar e pr esent . The use of f or ei gn mat er i al t o mask, f i l l i n, seal , or di sgui se wel di ng def ect s wi l l not be permitted.

TABLE I V - EXAMI NATI ONS AND TESTS FOR VARI OUS MATERI ALS AND SERVI CES

Exami nat i ons or Test s Requi r ed

Mat er i al or Application

Visual Radiographic Magnetic Par t i c l e or Liquid Penetrant

Ultrasonic

Hi gh- al l oy aust eni t i c or ni ckel st eel s or ni ckel al l oys f or cr yogeni c ser vi ce and vacuum ser vi ce

a. Tack wel ds Yes No No No

b. Root passes Yes No Yes No

c. I nt er medi at e passes

Yes No No No

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TABLE I V - EXAMI NATI ONS AND TESTS FOR VARI OUS MATERI ALS AND SERVI CES

Exami nat i ons or Test s Requi r ed

Mat er i al or Application

Visual Radiographic Magnetic Par t i c l e or Liquid Penetrant

Ultrasonic

d. Compl et ed wel d Yes 100 per cent f or NPS over 1- 1/ 4 i nches 60 per cent f or NAPA PS 1- 1/ 4 i nches and l ess

Yes(PT only);

1/ 2 i nch and over

Yes f or wal l thickness

Hi gh- al l oy aust eni t i c or ni ckel st eel s or ni ckel al l oys f or ot her t han cr yogeni c or vacuum ser vi ce

a. Tack wel ds Yes No No No

b. Root passes Yes No Yes No No

c. I nt er medi at e passes

Yes No No No

d. Compl et ed wel d Yes 100 per cent Yes ( PT onl y) No

St ai nl ess st eel t o car bon st eel

a. Compl et ed wel d Yes Yes Yes ( PT onl y) No

Car bon st eel pi pi ng syst ems

a. Tack wel ds Yes No No No

b. Root passes Yes No Yes MT No

c. I nt er medi at e passes

Yes No No No

d. Compl et ed wel d Yes 100 per cent Yes MT No

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TABLE V - MANDATORY MI NI MUM NONDESTRUCTI VE EXAMI NATI ONS FOR ASME B31. 1 PI PI NG

Temper at ur es over 750 degr ees F and at al l pr essur es.

Temper at ur es bet ween 350 degr ees F and 750 degr ees F i ncl usi ve and at al l pr essur es over 1052 psi g gage

Al l ot her s

But t wel ds ( Gi r t h and Longitudinal)

RT f or NPS over 2 i nches MT or PT f or NPS 2 i nches and less.

RT f or over 2 i nch NPS wi t h t hi ckness over 3/ 4 i nch.

Vi sual f or al l s i zes wi t h t hi ckness 3/ 4 i nch or l ess.

Vi sual f or al l s i zes and t hi cknesses.

Wel ded Br anch Connect i ons ( Si ze i ndi cat ed i s Br anch Size)

RT f or NPS over 2 i nch MT or PT f or NPS 2 i nch and l ess.

RT f or br anch over 4 i nch NPS and t hi ckness of br anch over 3/ 4 i nch.

Vi sual f or al l s i zes wi t h br anch t hi ckness 3/ 4 i nch or l ess.

Vi sual f or al l s i zes and t hi cknesses.

Fi l l et , Socket Wel ds PT or MT f or al l s i zes and thicknesses.

Vi sual f or al l s i zes and t hi cknesses.

Vi sual f or al l s i zes and t hi cknesses.

NOTES:

1. Thi ckness r ef er s t o pr essur e boundar y wal l t hi ckness ( such as pi pe wal l , f i t t i ng wal l , or nozzl e wal l t hi ckness) .

2. Al l wel ds must be gi ven a vi sual exami nat i on i n addi t i on t o t ype of speci f i c nondest r uct i ve exami nat i on speci f i ed.

3. NPS- Nomi nal Pi pe Si ze.

4. RT- Radi ogr aphi c exami nat i on; MT- magnet i c par t i c l e exami nat i on; PT- l i qui d penet r ant exami nat i on.

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TABLE V - MANDATORY MI NI MUM NONDESTRUCTI VE EXAMI NATI ONS FOR ASME B31. 1 PI PI NG

Temper at ur es over 750 degr ees F and at al l pr essur es.

Temper at ur es bet ween 350 degr ees F and 750 degr ees F i ncl usi ve and at al l pr essur es over 1052 psi g gage

Al l ot her s

5. RT of br anch wel ds shal l be per f or med bef or e any noni nt egr al r ei nf or ci ng mat er i al i s appl i ed.

6. The t hi ckness of but t wel ds i s def i ned as t he t hi cker of t he t wo abut t i ng ends af t er end pr epar at i on.

7. Temper at ur es and pr essur es shown ar e desi gn.

8. I n l i eu of r adi ogr aphy of wel ded br anch connect i ons when r equi r ed above, l i qui d penet r ant or magnet i c par t i c l e exami nat i on i s accept abl e and, when used, shal l be per f or med at t he l esser of one- hal f of t he wel d t hi ckness or each 1/ 2 i nch of wel d t hi ckness and al l accessi bl e f i nal wel d sur f aces.

9. For nondest r uct i ve exami nat i on of t he pr essur e r et ai ni ng component , r ef er t o t he st andar ds l i st ed i n appl i cabl e code or t he manuf act ur i ng speci f i cat i ons.

- - End of Sect i on - -

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