Welding Fabrication Procedure API-650 Tank

1.0 P2.0 R3.0 W4.0 W5.0 M6.0 B7.0 B8.0 J9.0 P10.0 T11.0 B12.0 I13.0 W14.0 I15.0 I16.0 A17.0 W18.0 P19.0 A20.0 A

We

PURPOSE AND

REFERENCES

WELDER QUA

WELDING PRE

MATERIALS ..BASE MATERI

BASE MATERI

JOINT FIT-UP

PREHEAT ......TACK WELDS

BACKPURGE/BNTER-PASS T

WELDING TEC

NTERRUPTION

NSPECTOR QU

ACCEPTANCE

WELD REPAIR

POST WELD HATTACHMENT

ATTACHMENT

elding FaAPI – 65

D SCOPE .............................

ALIFICATION .EREQUISITES......................IAL JOINT PRE

IAL JOINT CLE

AND ALIGNM

.....................S ....................BACKING GA

TEMPERATURE

CHNIQUE.......N OF WELDIN

UALIFICATION

CRITERIA FO

RS..................HEAT TREATM

T WELDS.......TS...................

abricatio50 Stora

TABLE O

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.....................EPARATION ..EANING ........

MENT .......................................................S ...................E ........................................

NG ..................N...................

OR COMPLETE

.....................MENT ........................................................

on Proceage Tank

OF CONT

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ED WELDS ...........................................................................................

edure ks

TENTS

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Doc. #: AKRev.: 0 of

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KE/WFP/001

6

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...... 2

...... 2

...... 2

...... 2

...... 2 ...... 3 ...... 3 ...... 3 ...... 3 ...... 4 ...... 4 ...... 4 ...... 4 ...... 5 ...... 5 ....... 5 ...... 6 ...... 6 ...... 6 ...... 7

1

2

3

4

5

6

1.0 PUR1

2.0 REF1

2

3.0 WELA.

ac

4.0 WELA. A

S

B. Wlowminteenpr

5.0 MATA. B

B. O

1

C. WPr

D. RW

E. Ww

6.0 BASEA. T

liWfr

C

WeldA

RPOSE AND . This Wel

requiremeneffect or as

ERENCES

. API 650, “

. ASME Sec

LDER QUALWelder/weldccordance wit

LDING PREAll welding shSpecification (

Welding shall ower than 0° F

weld joint shalmoisture has nntroduced intemperature spntrapped moiresent.

TERIALS

Base Materials

Only the mater

. Filler Mate

Welding filler rocedure Spe

Requirements fWPS. Welding filler welders makin

E MATERIAThe edges of mited to 3/8 in

When edges oree of scale an

Circumferentia

ding FabAPI – 650

SCOPE

lding Fabricants of API 65s otherwise sp

“Weld Steel T

ction IX, “We

LIFICATIOding operatorsth API – 650.

EREQUISITEhall comply w(WPS).

not be perforF or when surll be sufficien

not been trappto previouslypecified in theisture. The ad

s

rials specified

erials

materials to bcification (W

for procurem

materials (eleng weldments

AL JOINT Pplates may bn. thickness of plates are ond slag accum

al edges of ro

brication0 Storag

ation Procedu0. The Code

pecified by th

Tanks for Oil S

elding and Br

ON

s shall be c

ES

with the require

rmed when thrfaces are wetntly protectedped between my fit-up jointe Welding Prodditional preh

d shall be used

be used with tWPS.

ent and contro

ectrodes, barewith this proc

PREPARATbe sheared, mof plates for b

oxygen cut, thmulations befo

oof and bottom

n Procedge Tanks

ure (WFP) sh edition and a

he client.

Storage”

azing Qualifi

currently cert

ements specif

he ambient temt or exposed t

d from inclemmembers thats prior to fiocedure Specheat should be

d.

this procedure

ol of filler ma

e filler wire, ocedure. Weld

TION

machined, chipbutt-welded j

he resulting suore welding.

m plates may

dure s

hall govern thaddenda for th

ications”

tified, having

fied in the We

mperature in tto rain, snow,

ment conditiont are to be weinal welding.ification (WPe applied if th

e are specified

aterials shall b

or consumableders shall not

pped, or machjoints and 5/8

urface shall b

y be manually

Doc. #: AKE/Rev.: 0 of 6

he welding ohis procedure

g performed

elding Proced

the immediate, dust, or highns. Care shallelded and that. PreheatingPS) may be nhere is reason

d in the Weld

be in accordan

e inserts) musperform weld

hine oxygen in thickness

be uniform an

y oxygen cut.

/WFP/001

f componentse shall be the

qualification

dure

e vicinity of th wind. The w be taken to at moisture hag above theecessary to ren to believe m

ding

nce with

st be utilized bds autogenous

cut. Shearingfor lap- weld

nd smooth an

. Kerf or gou

s to the latest in

n tests in

the weld is welder and assure that

as not been minimum

emove any moisture is

by sly.

g shall be ded joints. d shall be

uge marks

7

8

9

10

on

7.0 BASEA. Pr

an

B. A

C. Wpr

1

8.0 JOINA. T

Ifby

B. Pth

C. D

D. Shwan

9.0 PREHA. W

Prat

B. Tjosuus

0.0 TACA. T

Sp

B. D

C. Tre

D. Tprta

WeldA

n the joint bev

E MATERIArior to weldinnd other forei

A fine film of r

Weld-through rior to weldin

. Solvents apalcohol, isoStoddard s

NT FIT-UP The root openif the tolerancey machining o

lates to be joihe welding op

During the wel

hell plates mawelded to the bnd the bottom

HEAT

When the baserocedure Spet or above the

The preheat temoint and in advurface pyromesed directly in

CK WELDS

Tack welds shapecification (

Defective tack

Tack welds useemain in the f

Tack welds in rovided they aack welds.

ding FabAPI – 650

vel deeper tha

AL JOINT Cng, surfaces foign s that are d

rust adhered t

primers, e.g.,ng.

pproved for uopropyl alcoh

solvents.

AND ALIGNing and fit-up es cannot be aor grinding.

ined by butt wperation (see p

lding operatio

ay be aligned bottom before

m plates.

e metal tempercification (W

e minimum pr

mperature shavance of the weter, “Tempiln the weld zon

all be made bWPS.

welds shall b

ed in the assefinished joint w

the bottom, roare sound and

brication0 Storag

an 1/8” (0.125

CLEANINGor welding shdetrimental to

to the joint ed

Deoxalumin

use on the bashol, acetone, m

NMENT

tolerances shachieved, the

welding shall bparagraph 15.

on, plates shal

by metal clipe continuous w

rature is belowPS). The bas

reheat temper

all be maintaiwelding. Prehstik,” or non-ne.

y qualified w

be removed or

mbly of vertiwhen the join

oof, and circud the subseque

n Procedge Tanks

5) shall be rep

G

all be clean ano welding.

dges need not

ite, Spatter-w

e material andmethyl ethyl k

hall be as specend preparati

be matched acA.3).

ll be held in c

ps attached towelding is sta

w the minimuse metal shallature prior to

ined for a distheat temperatmercury-type

welders in acco

r repaired prio

cal joints of tnts are welded

umferential joently applied

dure s

paired prior to

nd free from p

be removed p

weld, or Carbo

d weld materiketone, toluen

cified in WPSions may be b

ccurately and

close contact a

the bottom parted between

um preheat tebe heated sucwelding.

tance of at leature above 12e thermomete

ordance with

or to welding

tank shells shad manually.

oints of the tanweld beads a


o fit-up and ta

paint, oil, rus

prior to weldi

oweld 11, need

ials are methyne, Varson 4,

S. built up by we

d retained in p

at all lap joint

lates, and the the bottom e

mperature spch that the sur

ast 3 inches on5° F shall be

er. Indicating c

the Welding P

.

all be remove

nk shell need are thoroughly

/WFP/001

ack welding.

st, scale, slag,

ing.

d not be remo

yl alcohol, ethDowanol EB

elding or re- p

position durin

ts.

shell may bedge of the she

ecified in the rfaces to be w

n each side ofchecked by ucrayons shall

Procedure

ed and shall no

not be removy fused into th

grease,

oved

hyl B, and

prepped

ng

e tack-ell plate

Welding welded are

f the weld using a

not be

ot

ved he

1

1

1

1

11.0 BACNot ap

12.0 INTEA. In

Sp“Tw

B. IfPrpa

13.0 WELA. W

anmpere

B. Cgrsh

C. Bad

D. Fshas

E. Tth

F. P

pepaa

G. Ase

H. Ain

I. WSp

14.0 INTEA. W

Pr

WeldA

KPURGE/Bpplicable.

ER-PASS TEnter-pass temppecification (Tempilstik,” o

weld zone.

f the temperatrocedure Speass temperatu

LDING TECWelding voltagnd amperage r

mandatory cheerformed by tecording equip

Cracks or blowrinding, chipphall not be use

Before weldingdjacent base m

or double-wehall be prepassure sound m

The recommenhick unless oth

eening may berformed untiasses, base, odefect.

After being laiequence provi

All welding prn the Welding

Welding shall pecification (

ERRUPTIONWelding may b

rocedure Spe

ding FabAPI – 650

BACKING G

EMPERATUperature shallWPS and shaor non-mercu

ture of the wecification (W

ure, but not be

CHNIQUE

ge and amperrange gages l

eck or hold pothe inspector upment.

wholes that apping, or air caed on quench

g over previoumaterial 1 inc

elded butt joinared by suitabmetal.

nded weld beaherwise speci

be used to conil at least 3/8 inr weld layers

d out and tackided in Attach

rocesses may bg Procedure Sp

be performedWPS.

N OF WELDbe interruptedcification (W

brication0 Storag

GAS

URE

l not exceed thall be checkedury-type therm

eld is above thPS) the weld

elow the minim

rage shall be inocated on the

oints. Voltageusing calibrat

ppear on the suarbon arc goughed and tempe

usly depositedch on either si

nts, before appble methods

ad thickness sified in the W

ntrol distortionn. depth of berequiring non

ked, bottom phment 2, unle

be single passpecification (

d single arc un

DING

d without restrWPS).

n Procedge Tanks

he maximumd on the surfacmometer. Indi

he maximum ishall be allowmum preheat

n accordancee welding pow and amp rangted voltage an

urface of a weging before deered steel.

d metal, all slde of the weld

plying weld msuch as chip

shall be 1/16 toWelding Proced

n or to relieveevel has beenndestructive e

plates shall beess otherwise

s or multiple pWPS).

nless otherwis

riction, unless

dure s

value specifice of the comcating crayon

inter-pass temwed to cool dot temperature,

e with the limiwer supply arege checks fornd amp meter

eld bead shallepositing the

lag and flux sd shall be bru

metal on the spping, grindin

o 3/16 inches. Pdure Specific

e residual stredeposited. P

examination.

e joined by wespecified by t

passes per sid

se specified in

s otherwise sp


ed in the Welmponent usingns shall not be

mperature speown below th, prior to resum

its specified oe for referencr documentatirs or approved

l be removed next bead. O

hall be removushed clean.

second side tong, or air car

Passes shall bation (WPS).

esses. PeeningPeening shall n

Peening shal

elding the jointhe Client.

de unless othe

n the Welding

pecified in the

/WFP/001

lding Procedug a surface pyre used directly

cified in the Whe maximum imption of we

on the WPS. Ve only and areion purposes sd welding par

by filing, Oxygen gougi

ved, and the w

o be welded trbon arc goug

be less than ½

g shall not benot be appliedll not be used

nts in the

erwise specifi

g Procedure

e Welding

ure rometer, y in the

Welding inter-lding.

Voltage e not shall be rameter

ng

weld and

the root ging to

½ inch

e d to cover to mask

ied

1

1

1

15.0 INSPA. T

au

16.0 ACCA. B

1.

2

3.

4.

5.

6.

B. F

1

2

17.0 WEL

pr

WeldA

PECTOR QUThe Inspector wuthorized by A

CEPTANCE CButt Welds

. As-weldedcoarse ripp

. The surfacradiographrequired. B

a. Wbyresco

b. Th

c. ThmaAt

. The misalithickness o

. The upper of the lowemaximum 5/16 inch thi

. The edges a maximumfor horizon

. The thickn

shall not ex

illet Welds

. As-weldedcoarse ripp

. The surfacnondestruc

LD REPAIRA. Defects f

rior to repair.

ding FabAPI – 650

UALIFICATwho performsAL-KARRAR

CRITERIA

d surfaces are ples, grooves,

ce condition ohic and other nButt-welded j

Weld ripples ory any suitable sulting from a

onfused with t

he weld surfac

he finished suay have a reasttachment 1.

ignment of coor 1/16 inch, w

plate in comper plate at anyof 1/8 inch excick.

of welds shalm permissiblental butt joints

ness of the rein

xceed the amo

d surfaces are ples, grooves,ce condition octive examina

RS

found in weld

brication0 Storag

TION

s welding inspR and approv

FOR COMP

permitted; ho overlaps, abr

f the finishednondestructivjoints to be ra

r weld surfacemechanical p

any irregularithe image of a

ce shall merg

urface of the wsonable unifo

ompleted vertiwhichever is th

pleted horizony point by mocept that a pro

ll merge withe undercut of s.

nforcement o

ount shown in

permitted; ho overlaps, abrf the finished

ations.

ds shall be cal

n Procedge Tanks

pection for acved by client.

PLETED W

owever, the surupt ridges, an

d welds shall bve examinationadiographed sh

e irregularitiesprocess to sucties cannot many objectiona

e smoothly in

weld reinforceorm reinforcem

ical butt jointshe larger.

ntal butt jointsore than 20% oojection of 1/1

the surface o1/64 inch of th

f the welds on

n Attachment

owever, the surupt ridges, an

d welds shall b

lled to the atte

dure s

cceptance to th

WELDS

urface of weldnd valleys.

be suitable forns when nondhall be prepar

s on both thech a degree th

mask or be able defect.

nto the plate s

ement may bement not to ex

s of tank shel

s of tank shelof the thickne16 inch is perm

of the plate wihe base metal

n butt joints o

1.

urface of weldnd valleys. be suitable for

ention Client a


this procedure

ds shall be su

r the proper indestructive exred as follows

inside and ouhat the radiogr

surface.

e flush with thxceed the amo

lls shall not ex

lls shall not press of the uppmissible for up

ithout a sharpfor vertical bu

on each side o

ds shall be su

r the proper in

and approval

/WFP/001

e shall be

ufficiently free

nterpretationxaminations ars:

utside shall beraphic contras

he plate or ount shown in

xceed 10% of

roject beyondper plate, withpper plates le

p angle. Thereutt joints and

of the plate

ufficiently free

nterpretation

obtained

e from

of re

e removed st

n

f the plate

d the face h a ss than

e shall be 1/32 inch

e from

of

1

1

B. Wre

C. Padre

D. Cgr

E. Rwonbe

F. Wcomap

18.0 POSTA. P

pe

19.0 ATTA. B

as

B. Wth

C. Wdaan

WeldA

Weld repairs shestore a weld

inhole leaks odditional weldepaired.

Cracks and all rinding, mach

Repairs of defewater level at l

n or near the teen complete

Welded repairsontained oil, u

manner. Repapproved in wr

T WELD HPost weld heerformed in a

ACHMENTBars, clamps, ts the base ma

When applyinhicker materia

When the engiamage the band grind the a

ding FabAPI – 650

hall be perforto an accepta

or porosity in d bead over th

defects in shehining, or air c

ects discovereleast 12 inchetank bottom. ly blanked of

s shall not be until the tank irs shall not briting by the C

HEAT TREAeat treatment accordance wi

T WELDS

temporary attaterial.

ng attachmenal shall govern

ineering speciase material sarea flush.

brication0 Storag

rmed using thable condition

tank-bottom jhe defective a

ell joints or shcarbon arc go

ed after the tanes below the p

Welding shaff.

attempted onhas been emp

be attempted oClient.

ATMENT

when indicaith API-650

achments, etc

nts to materian.

ification requhall be utilize

n Procedge Tanks

e original Wen.

joints or roofarea. Other de

hell to bottomouging from o

nk has been fpoint being repall not be perfo

n a tank filledptied, cleanedon a tank that

ated in the W

c. welded to th

als of differen

uires removaled, e.g. cut, g

dure s

elding Proced

f joints may befects or crack

m joints shall bone or both sid

filled with wapaired or with

formed on any

with oil, or od, and freed of

has containe

Welding Proc

he base mater

nt thicknesse

of temporarygrind, or air c


dure Specifica

e repaired by ks in tank bot

be removed bdes of the join

ater for test shh the tank empy tank unless c

n a tank that hf gas or oil red oil, except i

cedure Specif

rial shall be th

es, the prehea

y attachmentscarbon arc go

/WFP/001

ation (WPS) t

applying an ttom joints sh

by chipping, nt and re- wel

hall be made wpty if the repaconnecting lin

has previouslsidue in a safin a manner

fication (WP

he same P- nu

at requiremen

, a method thouge the attac

to

hall be

lded.

with the airs are nes have

ly fe

PS shall be

umber

nts of the

hat will not chment off

Welding Fabrication Procedure API-650 Tank

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Transcript of Welding Fabrication Procedure API-650 Tank