2API 570 Part 3 Pipe Fabrication

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110/15/15 08:34:03 AM

API 570 Piping Inspection CodePart 3: Pipe Fabrication



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Obecti!es

"eter#ine t$e Mini#%# "esign Meta& 'e#p

Fa#i&iar (it$ (e&ding restrictionsFa#i&iar (it$ basic )abrication re*%ire#ents"eter#ine Pre$eat + P,-' te#perat%res.no( t$e " re*%ire#ents )or ne( pipe!a&%ate (e&d discontin%ities

'$is part (i&& co!er C$apter III + i in 313



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Materia&s

isted Materia&s: Materia& 6&isted in 313 in eit$er 'ab&e A1 or 'ab&e

3291

n&isted Materia&s: Materia&s not 6&isted in 313 se on&; i) t$e; #eet t$e #ateria& propert; re*%ire#ent o) t$e Code

n<no(n Materia&s Cannot be %sed )or press%re containing co#ponents

=e&ection o) #ateria& to resist corrosion is not (it$in t$e =cope o) t$e

Code >3235?



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o( 'e#perat%re i#its

ritt&eness o) a #ateria& is a #aor design iss%e )or a&& t;pes o) press%re

e*%ip#ent A britt&e #ateria& can )ai& catastrop$ica&&;@@

=o#e o) t$e )actors t$at a))ect britt&eness o) a #ateria& inc&%de: Materia& 'e#perat%re =tress e!e& '$ic<ness

'$e opposite o) britt&eness is 6'o%g$ness ritt&e #ateria&s $a!e &o( to%g$ness



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o( 'e#perat%re i#its

Mini#%# 'e#perat%re per Code Most Materia& isted 'ab&e A1

Most C= ists C%r!e etter

e&o( t$is te#perat%re Materia& cannot be %sed or '$e #ateria& #%st be i#pact tested at desired te#perat%re

Carbon =tee& o( 'e#p Process

1 Find C%r!e etter 'ab&e A1

2 Find Initia& Min 'e#p

se 'ab&e 32322A >tno#ina&?

C$ec< otes Fig 32322A

3 I) =tress Batio Fig 32322 Bed%ction 'e#p

nter at e)t >=tress Batio? At C%r!e go !ertica& to Bed%ction 'e#p

=%btract Bed%ction )ro# =tep 2

I#pact 'est Acceptance Criteria

4 ac$ set $as 3 bars

5 A!erage 'ab&e 32335

9 Mini#%# 'ab&e 32335

7 On&; 1 speci#en D 'ab&e A!e



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Eercise 1

1 ,$at is t$e #ini#%# design te#perat%re )or A335P5 >5 Cr?

2 ,$at is t$e #ini#%# design te#perat%re )or A358 ';pe 304G

3 ,$at is t$e #ini#%# design te#perat%re )or a 0750 pipe t$at is #ade )ro# A109G

4 ,$at is t$e #ini#%# design te#perat%re )or a 0500 pipe t$at is #ade )ro# A51990 p&ate

and is nor#a&iHedG

5 ,$at is t$e #ini#%# design te#perat%re )or a 0925 pipe t$at is #ade )ro# A109C and $asa =tress Batio o) 00G

9 I) t$e designer (ants to %se a pipe #ateria& be&o( t$e #ini#%# te#perat%re a&&o(ed b; 313

t$en t$e #ateria& #%st be JJJJJJJJ

7 I#pact testing is per)or#ed on an pipe #ade )ro# A109C >a )%&&; deoEidiHed stee&?

"eter#ine t$e )o&&o(ing:

a '$e i#pact proced%re #%st )o&&o( ($at specsGb '$e set consists o) $o( #an; barsG

c '$e #ini#%# a!erage )or t$e set isG

d '$e #ini#%# !a&%e )or a sing&e bar isG

e -o( #an; bar>s? can be be&o( t$e re*%ired a!erageG



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Ans(ers 1

1 ,$at is t$e #ini#%# design te#perat%re )or A335P5 >5 Cr? 20oF

2 ,$at is t$e #ini#%# design te#perat%re )or A358 ';pe 304G 425oF

3 ,$at is t$e #ini#%# design te#perat%re )or a 0750 pipe t$at is #ade )ro# A109G

C%r!e 15oF

4 ,$at is t$e #ini#%# design te#perat%re )or a 0500 pipe t$at is #ade )ro# A51990 p&ate

and is nor#a&iHedG C%r!e " 55oF

5 ,$at is t$e #ini#%# design te#perat%re )or a 0925 pipe t$at is #ade )ro# A109C and $as

a =tress Batio o) 00G C%r!e 7oF

9 I) t$e designer (ants to %se a pipe #ateria& be&o( t$e #ini#%# te#perat%re a&&o(ed b; 313

t$en t$e #ateria& #%st be i#pact tested

7 I#pact testing is per)or#ed on an pipe #ade )ro# A109C >a )%&&; deoEidiHed stee&?

"eter#ine t$e )o&&o(ing:a '$e i#pact proced%re #%st )o&&o( ($at specsG A='M A370 + A333

b '$e set consists o) $o( #an; barsG 3

c '$e #ini#%# a!erage )or t$e set isG 20 Ko%&es

d '$e #ini#%# !a&%e )or a sing&e bar isG 19 Ko%&es

e -o( #an; bar>s? can be be&o( t$e re*%ired a!erageG 1



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Fabrication ,e&ding

L%a&i)ied ,e&d Proced%re A=M +P =ection I Can accept so#e Proced%res *%a&i)ied b; ot$ers

,e&der L%a&i)ication A=M +P =ection I Can accept L%a&i)ications b; ot$ers

,e&ding Becords #p&o;er #aintain proced%res and per)or#ance records

,e&der Identi)ication ni*%e I" or =;#bo& =ta#p eac$ (e&d or se (e&d #aps

'ac<s (e&d F%sed (it$ t$e root pass Made b; a *%a&i)ied (e&der

ad (eat$er donNt (e&d

Fi&&et (e&d siHing Fig%re 32852 Min (e&d siHe 1/8



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In)o

Ot$er Misce&&aneo%s Be*%ire#ents

1 I) eEcessi!e #isa&ign#ent taper (it$ a #aEi#%# ang&e o) 30 degrees

2 Peening is pro$ibited on t$e root + )ina& pass

3 =ea& (e&ds a&&o(ed b%t #%st co!er a&& eEposed t$reads

4 F&ange a&&ign#enta Para&&e& (it$in 1/19 per )oot >dia#eter?

b o&t $o&es a&igned (it$in 1/8

5 o&t &engt$: o&ts s$o%&d eEtend co#p&ete&; t$ro%g$ t$e n%t I) not $as to be

(it$in one t$read o) co#p&ete engage#ent

9 as<ets: On&; 1 per )&ange asse#b&;



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,e&ding + "istortion

'$e Princip&es '$er#a& ro(t$ As #eta&s $eat %p t$e; eEpand ,$en coo&ed t$e; s$rin<

A #eta&Ns strengt$ decreases (it$ increasing te#perat%res

-o( "istortion Occ%rs '$e arc is initiated -ot s%r)ace eEpands + distorts t$e p&ate

ot #%c$ since t$e $ot side is #%c$ (ea<er t$an t$e coo& side Co#p&eted (e&d as $eat #o!es a(a; )ro# (e&d ,e&d contracts Co#p&eted (e&d is distorted + $as resid%a& stresses



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In)o

=tresses )ro# ,e&ding

1 ,$en (e app&; $eat in a non%ni)or# #et$od >(e&ding? t$e res%&t is a di#ensiona& c$angeca%sing t$e part to be distorted or (arped

2 '$e Princip&e As t$e #eta&s coo& t$e; s$rin< A C= (e&d t$at is (ide (i&& s$rin< abo%t

10 #i&s '$e base #eta& is 6anc$ored As t$e (e&d s$rin<s t$e base p%&&s t$e coo&ing (e&d

>'ensi&e =tress?

At $ig$er te#perat%re t$e (e&d #eta& is (ea< and d%cti&e It can be p%&&ed andres$aped to acco%nt )or s$rin<age At &o( te#perat%re t$e (e&d #eta& is stronger and &ess d%cti&e It is not easi&;

6res$aped Be#aining p%&& on t$e (e&d once coo& 6Besid%a& =tresses I) Besid%a& =tresses eEceed strengt$ o) (e&d Crac<

3 Besid%a& stresses can be red%ced or e&i#inated b;:

• Pre$eat• '$er#a& $eat treat#ent• Peening pne%#atic $a##er %sed to po%nd on (e&ds eg itterb%g t;pe o) e*%ip#ent



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Pre$eat + P,-'

Pre$eating >330? sed to #ini#iHe detri#enta& e))ects ca%sed )ro# (e&ding

Pre$eat te#perat%resQ se 'ab&e 33011 Pre$eat Hone s$a&& eEtend at &east 1 )ro# toe o) (e&d

Post ,e&d -eat 'reating >331? sed to re&ie!e detri#enta& e))ects ca%sed )ro# (e&ding P,-' te#perat%res: se 'ab&e 33111 P,-' Hone s$a&& eEtend at &east 1 )ro# toe o) (e&d Partia& -': Mini#%# o!er&ap o) 1N oca& -': F%&& circ%#)erence -ardness 'esting i) re*%ired 10 o) F%rnace (e&ds 100 o) )ie&d (e&ds



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Eercise 2

1 "eter#ine t$e #ini#%# pre$eat te#perat%res )or t$e )o&&o(ing sit%ations "eter#ine ($et$er

t$e pre$eat is re*%ired >Be*Nd? or reco##ended >Bec?

a 0750 t$ic< P1 #ateria& =M'= R 95 <sib 0250 t$ic< P8 #ateria&

c 0500 t$ic< P1 #ateria& =M'= R 75 <si

d 0325 t$ic< P5C #ateria&

e 1250 t$ic< P1 #ateria& =M'= R 70 <si

2 At ($at base #eta& te#perat%re do a&& t$e reco##end pre$eat te#ps beco#e re*%ired

te#perat%resG

3 "eter#ine t$e P,-' te#perat%re )or t$e )o&&o(ing sit%ations

a 0750 t$ic< P1 #ateria& =M'= R 95 <si

b 0250 t$ic< P8 #ateria&

c 0800 t$ic< P1 #ateria& =M'= R 70 <si

d 0325 t$ic< 5 Cr #ateria&

4 ,$at is t$e #ini#%# $o&ding ti#e a P,-' cond%cted on a C= pipe t$at is 1500 t$ic<G


9 ,$at is t$e #ini#%# $o&ding ti#e a P,-' cond%cted on a Cr pipe t$at is 0750 t$ic<G



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Ans(ers 2

1 "eter#ine t$e #ini#%# pre$eat te#perat%res )or t$e )o&&o(ing sit%ations "eter#ine ($et$er

t$e pre$eat is re*%ired >Be*Nd? or reco##ended >Bec?

a 0750 t$ic< P1 #ateria& =M'= R 95 <si 50oF Bec

b 0250 t$ic< P8 #ateria& 50oF Bec

c 0500 t$ic< P1 #ateria& =M'= R 75 <si 175oF Bec

d 0325 t$ic< P5C #ateria& 350oF Be*Nd

e 1250 t$ic< P1 #ateria& =M'= R 70 <si 175oF Bec

2 At ($at base #eta& te#perat%re do a&& t$e reco##end pre$eat te#ps beco#e re*%ired

te#perat%resG S 0oC >32oF?

3 "eter#ine t$e P,-' te#perat%re )or t$e )o&&o(ing sit%ations

a 0750 t$ic< P1 #ateria& =M'= R 95 <si one

b 0250 t$ic< P8 #ateria& one

c 0800 t$ic< P1 #ateria& =M'= R 70 <si 1100 1200oF >53 94oC?

d 0325 t$ic< 5 Cr #ateria& 1300 1400oF >704 790oC?


15 $r


1 $r

9 ,$at is t$e #ini#%# $o&ding ti#e a P,-' cond%cted on a Cr pipe t$at is 0750 t$ic<G

2 $r



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Ea#ination

Categor; " =o#e !is%a&

or#a& =er!ice =o#e !is%a&: #ateria&s )abrication + asse#b&; is%a&: 5 o) a&& (e&ds B': 5 o) circ (e&ds

=e!ere C;c&ic

is%a&: 100 o) )abrication + asse#b&; B': 100 o) circ (e&ds M'/P': A&& soc<et(e&ds

B' Criteria 'ab&e 34132 '( R (a&& t$ic<ness

6and #eans 6&esser o) !a&%es

Progressi!e =a#p&ing Bando# Ea# Beect 'a<e 2 #ore B': 5 o) circ (e&ds

Progressi!e =a#p&ing Bando# Ea# Beect

'a<e 2 #ore I) t$ese O. repair + stop I) an; de)ects t$en

'a<e 2 #ore )or eac$ reect I) t$ese O. repair + stop I) an; de)ects t$en

Ea# a&& or Bepair a&&On&; t$ose represented b;

t$is Bando# Ea#



1910/15/15 08:34:03 AM

Eercise 3

1 A ne( or#a& =er!ice pipe is )abricated '$e (a&& t$ic<ness is 0500 "eter#ine t$e

#aEi#%# a&&o(ed di#ension )or t$e )o&&o(ing discontin%ities:

a Crac<b ac< o) )%sion

c engt$ o) a s&ag inc&%sion

d ,idt$ o) a s&ag inc&%sion

e C%#%&ati!e engt$ o) s&ag inc&%sions

) "ept$ o) nderc%t

g engt$ o) nderc%t

$ MaEi#%# Cap -eig$t

2 A&& " #et$ods s$a&& be per)or#ed in accordance (it$ JJJJJJJJJJ

3 A&& " personne& s$o%&d be *%a&i)ied in accordance (it$ JJJJJJJJJJJJ

In)o " "e)initions:

100 Ea#ination :6A&& o) A&&Bando# Ea#ination : 6A&& o) =o#e

=pot Ea#ination : 6=o#e o) A&&

Bando# =pot Ea#ination : 6=o#e o) =o#e



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Ans(ers 3

1 A ne( or#a& =er!ice pipe is )abricated '$e (a&& t$ic<ness is 0500 "eter#ine t$e

#aEi#%# a&&o(ed di#ension )or t$e )o&&o(ing discontin%ities:

a Crac< 0

b ac< o) )%sion 0

c engt$ o) a s&ag inc&%sion D 2'( R D 2 E 05 R 1

d ,idt$ o) a s&ag inc&%sion 1/8

e C%#%&ati!e engt$ o) s&ag inc&%sions 2 in an; 9 &engt$

) "ept$ o) nderc%t D 1/32

g engt$ o) nderc%t n&i#ited

$ MaEi#%# Cap -eig$t 1/8

2 A&& " #et$ods s$a&& be per)or#ed in accordance (it$ A=M =ection

3 A&& " personne& s$o%&d be *%a&i)ied in accordance (it$ =''C1A



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Press%re 'esting

P%rpose o) testing Find &ea<s in oints

Create $ig$er stress t$an t$e operation stress Mini#iHe t$e ris< o) britt&e )ract%re ($i&e inser!ice

A&& ne( pipe is tested Cat " =er!ice 'est

Mini#%# -o&d 'i#e

10 #in%tes

Koints nins%&ated

-;drotest Pne%#atic 'est

S

PxS

P

T

T

5.1=

P

P

P P

P P

T

T initial

T

=

+=

=

=

inspect

TRV

P

(lesser) psig50Por1.1P

(lesser) psig25or5.0

1.1

=': A&&o(ab&e =tress at 'est 'e#perat%re >s%a&&; T 100 oF?



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In)o

,$; =' /=G

ote t$at =' /= (i&& a&(a;s be 10 I) greater t$an 10 t$en t$e pipe (i&& be tested at a press%re

$ig$er t$an 15 E P' A pipe (i&& a&(a;s be tested at or near a#bient te#perat%re %t at

a#bient te#perat%re a #ateria& is stronger t$an at so#e e&e!ated te#perat%re =o )or pipe

t$at is designed )or e&e!ated te#perat%res =' /= ad%sts t$e test press%re %p(ard recogniHing

t$at t$e #ateria& is stronger at test te#perat%re

Act%a&&; P E =' /= is basica&&; t$e press%re t$is pipe is 6good )or i) it (as rerated to a design

te#perat%re o) 100oF



2010/15/15 08:34:03 AM

Eercise 4

1 "eter#ine t$e re*%ired $;drotest press%re )or a 8 P= pipe '$e design press%re is 500 psig

at 900oF '$e pipe is #ade o) A109 r A #ateria&

2 A pne%#atic press%re test is going to be per)or#ed on a 19 P= piping s;ste# '$e design

press%re is 100 psig at 300oF '$e pipe is #ade o) A109 r C #ateria& "eter#ine t$e

)o&&o(ing press%res

a 'est Press%re

b Initia& =;ste# Press%re

c MaEi#%# Be&ie) a&!e Press%re

d Inspection Press%re



2110/15/15 08:34:03 AM

Ans(ers 4

1 "eter#ine t$e re*%ired $;drotest press%re )or a 8 P= pipe '$e design press%re is 500 psig

at 900oF '$e pipe is #ade o) A109 r A #ateria& P' R 811 psig

2 A pne%#atic press%re test is going to be per)or#ed on a 19 P= piping s;ste# '$e design

press%re is 100 psig at 300oF '$e pipe is #ade o) A109 r C #ateria& "eter#ine t$e

)o&&o(ing press%res

a 'est Press%re P' R 110 psig

b Initia& =;ste# Press%re PInitia& R 25 psig

c MaEi#%# Be&ie) a&!e Press%re PB R 121 psig

d Inspection Press%re PInspect R 100 psig

2API 570 Part 3 Pipe Fabrication

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