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TotalSheet
Nos:
28
Subcontractor's
ame
DO,DSAL
TE
LTD
Company's
ame
DolphinEnerqv
imited
Contractor'same JGCMiddleEastFZE
Project ame
DOLPHIN
roiect
Plant ocation
RASLAFFAN
NDUSTRIAL ITY.QATAR
Subcontract
o.
Z
-1430 60'l
2
SubcontractWorkPackage
ECHANICAL&
AINTINGWORKS(MC'2)
METHOD TATEMENT
ORSTEEL /G
PIPING ABRIGATION
ERECTIOIN
Subcontractor's
ocument
o.with evision o.
DOD-MST-Pl-020.ev.02
DOLPHINProject
SUBCON. o z- 1430 601
2
IWORKPACKAGE:
MECHANICAL
ND PAINTING
woRKs(MG-2)
CLASS :
1 I ISSUE
URPOSE:
RESULTODE:
A,B.R.N.F
I
I
)
NEXTSTATUS:A,Fl,FR,FC,AB
F
C
)
RESUBI\ ' ISSIONATE:
(
.''.
\
RESPoNSIBLEEPr./PERSoN
,
e ,p, J4 ,Eil ,f ,("2; )
REVTEWDATE
t
gd g,t'/t
)
Ar Apprcvedwithout
Comment;
B: Approvedwith MinorComment R: Approvedwith CommenlN: Not Approved
F: Not
Subiect o Review
Appro\€l
or
review
here
nder
shall
not
be
construed o relieveVendor Subcontraclor f his responsibilitie snd iability
underlhe Cont€ct.
JOBNO .
0-3356-20
ContractorDOC.
NO .
ORIG. I SUBCONTRACT
O.
Seria l RFV.
v - |
1430 -601 -2 402 03
CompanyDOC.
NO
RL0-306012M32 402 03
Rev. lssue
Date
Puroose/Descriotionf Revision Prepared Reviewed
Approved
01
14.02.05
First ssue or Review comments
Y.S.Rao R .K .S ha rm a
Alan
Shreeve
02 07.05.05
Incorporated
ELcomments nd
resubmitor construction
S.S.Rao
S.Vijaya
Kumar
Alan
Shreeve
03 28.06.05
Incorporated
GC/DELcomments
nd
resubmit
or
construction
S.S.Rao
S.Vijaya
Ku
-
8/17/2019 63080137 Method Statement for Carbon Steel U G Piping Fabrication Erection
2/28
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8/17/2019 63080137 Method Statement for Carbon Steel U G Piping Fabrication Erection
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i * i lDodsal
irrrdl fH5-
PROJECT
: DOLPHIN ROJECT PSTREAM
NDCOMPRESSION
ACILITIES
COMPANY
: DOLPHIN
NERGY TD.
CONTRACTOR : JGCMIDDLE AST ZE
SUBCONTRACTOR
DODSAL TE
LTD.
JOBNUMBER
: 0-3356-20
METHOD TATEMENT
FOR
U/G STEEL
PIPING ABRICATION
EREGTION
DOCUMENTUMBER
DOD-MST-PI-O2O
REVISIONUMBER 2
ISSUE UMBER
I
ISSUE ATE 28.06.05
Rev.
No
lssue
Date
Reason
or lssue
Prepared
Dodsal
Reviewed
Dodsal
Approved
Dodsal
Approved
JGC
0
06.02.05
ForApproval, fter ncorporatingGC
Comments
Y.S.Rao
R K
Sharma
Alan
Shreeve
1
07.0 .0
Incorporated ELcomments
nd
resubmit or construction
S . S . R a o
S.Vilaya
KUmar
Alan
Shreeve
2 28.06.05
IncorporatedGC/DEL omme4ts
and resubmit or construction
S.S.Rao
S.Vijaya
AUMAT
Alan
9ll
rehve
LW'
..-\y
0[]d\,no
CompanyDoc.Nor L0-306012-l\,132-402ev.03
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1 . 0
2,O
3.0
4.0
5.0
6.0
7.0
8.0
9.0
PURPOSE
SCOPE
REFERENCE
DEFINITIONS
RESPONSIBILITIES
TOOLSANDEQUIPMENT
PROCEDURE
HEALTH AFEWANDENVIRONMENT
ATTACHMENTS
Company
Doc.No:RL0-30601-i\.432-402ev.03 Page4 o f 28
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1 . 0
2.O
PURPOSE
The
purpose
f
this method tatement
s to
provide
uidelines
o monitor
nd control
ll
activities
elated o the installation
f underground
iping
o ensure
he compliance
ith
project pecifcaiions nd requirements.
SCOPE
This
method tatementovers
llactivitiesssociated
ith
prefabrication
nderection
f CS,
LTCSand SS
materialsncludingour
wet services
pplicationsf under
ground iping
t
Dolphin roject pstream
ndCompression
acilities.
REFERENCE
COMPANY/CONTRACTOR
ocuments
3.0
3.1
:Pipingmaterial lasses
:
Steel
Piping Fabrication
:Welding f
pressure
ontaining
iping
and equipment
:Metallurgical
equirementsor carbon fee/s
n
sour
wet
service(pipingnd equipment
ubject o SSCCand
HIC)
:Metallurgical
equirementsor carbon
steelsn sourwet
service(piping
nd equipment ubject
o SSCConly)
o
RL0-0000-GPG-00201/S-000-1139-001
ProjectQualityPlan.
.
RL0-0000-FPG-50001/5-000-1654-001
ConstructionHSEplan.
.
DOL-0000-CSP-00003/S-000-3116-001
UnderGroundlnstal lat ionNetworks
o
RL0-0000-LSP-000035-000-1360-006
:Specification
or identificationf Piping
matenal
o
RL0-0000-GPR-'100055-000-1630-201
:Material control
procedure
at site
'
(construction
hase)
.
RL0-0000-GPR-10101
3-000-1670-101
:Quality
control
procedure
or welding
consumableontrol.
o
RL0-0000-GMA-001015-000-1676-001
Sitewelding nd
NDEmanual.
.
RL0-0000-LPR-100025-000-1676-002
:WPS or Field
iping
work.
o
RL0-0000-LPR-100035-000-1676-003
:Weldino rocedure
ualification
est or
field
piping
won
-
8/17/2019 63080137 Method Statement for Carbon Steel U G Piping Fabrication Erection
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.
RL0-30601
-M33-549N-1430-601-2-549
QCP or
Preservationf equipment
and
malenals
o
RL0-30601-Q56-521N
1430-601-2-521
QCP or Control f
Welding onsumables
.
RL0-30601-M32-4O3N-1430-601-2-403
MST or
PostWeldHeat reatment
o RL0-306012-M33-5504/-1430-601-2-550QCP or Wrapping nd coatingof U/G
Piping
.
RL0-306012-M33-525N-1430-601-2-525
QCP or Material
eceivingnspection.
4.O DEFINITIONS
COMPANY
CONTRACTOR
SUBCONTRACTOR
SUPPLIER
t-J
SS
LTCS
RESPONSIBILITIES
ConstructionManager
Construction
Manager
activities t site.
PLANNING ngineer
5.'l
: Dolphin nergy
imited
:
JGC
Middle astFZE
: Dodsal teLimited
:
Supplier f
products
ndservices
o
SUBCONTRACTOR
:Carbon
teel
:Stainlessteel
:Low emperaturearbon teel
shall be responsibleor overall management
f all
construction
5.2
5.3
He shall be responsible o prepare monthly and weekly schedu/esbased on over all project
plan
and
monitor
progress
on daily,
weekly and monthly basis.
PIPING ngineer
He shall be responsibleor carryingout
the
all activities ssociated
with U/G
piping
works
includes
prefabrication
nd erection
in line with ihe
schedule
targets
given
by the
Subcontractor's rojectControls epartment . lso
responsibleor
planning
nd execution f
all U/G
piping
activities,ncluding ut not imited, o the Materials,
Machinery,Manpower.
He will
provide
a list of materialsagainst each lsometricno, to the MaterialController
minimum wo weeks n
advance
of the
planned
chedule. PipingEngineer s responsibleor
expediting he missing materials,monitoring he drawing revisionsand modificationsor
meeting he
production
argets set by the
project
controls. They shall co-ordinateand
interface ith CONTRACTOR
iping
Supervisors.
PipingForeman
He shall be responsible or fabricating fhe spoo/s as
per
the latest approved drawing as
identifiedby the
piping
engineer and also
responsib/e
o coordinate
with igging foreman for
erection of fabricated
prpe
spoo/s.
Ensure
all
personnel's
working with him shall worn
necessary PE as
per
construction SE
plan.
5.4
ComDanv oc.No:RL0-306012,432 02 Rev.03
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28
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i - 1 ' i _ -_ - ' _ ' ' ____- i
i - \ i - - . l
I
=-r
iOOdsal
-1
g*r#{
5.5
Rigging oreman
He shallbe responsible
or supervise
ll rigging
activitiesnvolved
n fabrication
nd erection
of
piping
spools
and ensureall
personnel's
hall
worn necessary
PPE as
per
construction
HSEplan.
5.6 Material Controller
MaterialController
hall be responsible
or collecting
materials rom
the JGC ware
house/JGCesignateday downarea
and shifting
he materials
o the abricationreaand
shifting
he fabricated spools
rom the subcontractor's
abricationarea to the
erection site.
5.7
5.8
5.9
WeldingEngineer
He shallbe
responsibleor the selection
f consumables inventory
ontrol, reparation
Qualification
f
WPS & PQR,
Qualification
f Welders&
Monitoring elderPerformance,
Marking
he WPS
and
NDE requiremenisn lsometric rawings, roubleShooting f all
weldingelated
roblems,
onducting
raining ections
or hewelding
ersonal.
e
shall lso
coordinatend nterface
ith
Contractor's
elding
Engineer Sr. Welding nspector
n the
maters elatedo Welding selectionf
Jointsor NDT.
WeldingSuperintendent
WeldingForeman
He shall eport
o the WeldingEngineer nd shall
be responsibleor Job allocation nd
monitoringelders, ontrol ndmonitor
he ssue f WeldingConsumables,hecking
hatal l
welding
arameters
onfirms o heWPS,conducting
eldvisualnspectionnd
preparation
of DailyWelding rogress eport, ttending
epairs tc.,
Welding
QC
nspector
He
shallbe
responsibleor heverificationnddocumentationf all
he materialsonfirming
to the lsometric rawings Standard
rawings,ransferringeat
nos.
on
to the material
traceabilityecords, hecking f it-ups,
reheats,
nter
pass
emperatures
inal
weld
visuals,
witnessing F Pad eak esting,WeldVisual
nspectionnd
preparation
f DWR,
n
process
inspection surveillancef all
welding ctivitiesn
he
shop.
NDE&
PWHT
Goordinator
He shallbe responsibleor coordinating
ll the NDEand
PWHTactivities. e is the focal
point or requesting ll the NDE and PWHT, lagging nd identificationf joints.He will
update
heNDT esults n raceabilityecords, nd
make he istof spools leared
or NDE.
HSEOfficer
HSE officer hallbe responsible
or successfulmplementationf safety
ystems hrough
differentrainino nd nsoection.
5 .10
5 . 1 1
Company
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1 \ t t
I
F,
illodsal
h.-i.. l<
6,0 TOOLS
ANDEQUIPMENT
o
Cranesshall
be certified
y third
pafty
.
Fork ifts,Liftingbelts,Chain
blocks, irfors,Slings
and other
necessaryoolsand
tackles or rigging& material andling perationsCertified y thirdparTyf applicable)
and
quarterly
olor-coded s
per project
HSE
equirement.
.
Pipe tands,
ipe
lamps,
ixtures
.
Welding nd
grinding
machines
pencil rinders)
.
Electrodes
bakingand holdingovens
with valid calibrationceftificates.
.
Gascutting nd
Plasma uttingmachines
.
PipeFitting nd nspection
ools
o
Wind
orotection
uts
.
Hand ools uitableo the
materialo be abricated
.
Tools nd
ackles i th abricationenches nd
vices
7.O
PROCEDURE
SequenceOf Activities
7 1 Materialdentification
a. ldentify he materials
equired or fabrication f under
ground
piping
as
per
the
approvedonstruction
sometricrawings.
b. Collect nd shift
he materialsrom he JGGwarehouse/layownarea
o fabrication
arealstores. egregate he materials
tem wise
and
colour codes
for material
identificationhallbe appendix-1,pecificationor dentificationf pipingmaterialsefer
Doc.
o:RL0-0000-LSP-00003.
c. Millmarkings hallbe verified ith
materialestcertificateuring abricationf
piping,
beforecut the
pipes
o suit drawing imensions
eat or chargenumbers hall be
transferred y hard stamping/tag n cut
pieces
and duly
recorded nd
get
signed rom
the
coniracior
n he raceabilitvorm.
7 2 Material torage
a.
All
piping
Material ith heexceptionf bulk
tems,
.g.
bolts, utsandwashers tc,will
be stored ndcontrolledn accordance ithcontraclor's aterial ontrol roceduret
site eferCompany oc.
No:RL0-0000-GPR-10005.
b. Materialshallbe stored ccording
o the temclassification,
o
notstore
ogether ith
different
tem
classification.
or sfainlesssteelspools/pipes nd
fittingsshallbe kept
separatelvo avoidcontamination
ithothermaterials.
c. Pipe
spoo/s sha// be
stored area by area as
per
the
PCWBS for easy access and
identification
of spoo/s.
7.3 Verification
of
Trenching Excavation
a. Trenching Excavation ill be doneby others or all the U/Gpipingworks. After eceipt
of trench handover document
from Contractor, Subcontractor hould verify
the
Conpany
Doc.No:RL0-3060]2-l\,132-402
ev.03
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i-:\
l e n i
Ef
r_---_--------_--.]i
iDodsal
lsE-
7.4
suitabilityf
Trench/Excavation
or the Coordinates,
levation,
idthof trench,Slopes,
Bedding s
per
he
drawings
nd
rench onfiguration
or safe
working.Any concerns
willbe
notifiedo Contractor,
hrough
roper
hannel.
Prefabrication f
spools
a.
Prefabricationhall be carried
out as
per
the subcontractor's
pproved
method
statement
or
piping refabricaiion
oc.no:
L0-30601-M32-404N
1
430-601
2-404.
b. The spools equested
y the Area Piping
Engineer
ill
be
deliveredo the
location
advised
y he Piping ngineer
Piping oreman. nloading
ndstackinghall
bedone
in
such a
way that, the commonaccess
and roadsare
not blocked, ntil unless
informed nd
agreed y the CONTRACTOR.
he spools hall
be stackedo suit
he
erection equence nd segregated
aterial
wise, n
particular
voidcontact f SS
sooolso CS/LTCS.
Transportation nd
placing
of spools
a.
The spoolsdeliveredo site are
generally
wrapping nd coated ondition.
Hence, are
shallbe
exercisedo avoid/minimizeamages
o the coating uring
oading,
nloading
and
erection ctivities.
b. If any damages occurred duing transpoftation
and handling shall be
notified
to
contractor and damaged
pipe/fifting
shall be
replaced with new
pipe/fitting
and
welding
shallbe carried out according
o the approved
welding
procedure.
c. The
pipes
PipingSpoolsduly coated
Wrappedwill be
placed
nearby he excavation
within he range no closer han 1.5M.
The
crane
will be kept at a safe distanceof 1.5
time'sminimum epthof excavation ue to looseexcavated and/earth. he capacity f
the crane o be usedwill be identified epending
n Pipedrameter/weight.
d. When there
is no
excavation
s involved,
piping
can be
placed
directly on
the
coordinates f
iis
final ocation.
e. Liftingbelts shall be used
o
avoiddamage
o the Coatingof the
piping
components.
Steel opes Slingsare shall
not
be
used.
f. Pipingcomponents ill be
placed
above
ground,
using
woodenDunnage or sand bags
to facilitatewelding
and
it up
operations.
Gleaningand protection of spools
a. Before ield erection,Spools will be blown
with
compressed
air to remove dirt and
debris,
if
any.
lf the
spool
is not
going
to
get
erected immediatelyafter
the
cleaningi lowing,
he
ends
wili
be
protected
with the end caps or with a
polyethylene
sheet tightly ied with binding
wire to
avoid
ingress of dirt/water/moisturend any
foreign
ob1ects.
The open ends of the erectedspoolsshallbe covered
mmediatelyo
avoid
he moisture
ngress.
b. Extracare shall be takenwhile erectingCS/LTCSand
galvanized
poo/s
n the vicinity
of Stam/essSieel o avoid crosscontaminatlon.
Wire rooe
slinos
shall not be used or
handl ing,
ransportat ion
nderect ion
f SS spools.
7 .5
7.6
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7.7
c.
The flange aces shall
be sealed
with light
metal blinds
plywood
or
purpose
manufactured
lastic
aps.
Everycare shall
be taken
o avoiddamage
o flange
gasket-seating
acesduring
he course
f erection.
f any damage
o
the flange ace
shall
e notified
o theCONTRACTOR
y
FQR.
Field nstallation
Prior o any installation,
3D view
o be studied o check
and ensure
or any nterface
with adjacent
structures,
iping
or equipment.
ncase f any
such cases sha//
be
informed hrough
ield
query
o contractor/company
or remedialaction.
All
piping
materials
hall be field
run and fabrication,
raceabilityecords
hall be
maintaineds
per
heSUBCONTRACTOR
ethod tatement
or Piping refabrication.
Heat numbers shall be transferred
by means of
hard
punching
or carbon
steel
materials hickness bove
5 mm.
For
carbon
steel materials htckness
ess than or
eoual o 5
mm
and
all LTCS/SSmaterials hall
e etched
with
electric
encil.
Erection equence hall
be
planned
ccordingo
the spools vailability nd ensure
hat
there s no inbrterence
and difficultyof erecting
he remainingspoo/s n
later
stage.
e. While
oint
it up careshall
be exercisedor staggering
he Longseamsof
pipe
and
fittingsn sucha way hatat
the
circumferential
elds he ongitudinal
eldsareoffset
from
he
top
of
the vertical
ipe
centerline
referably
0"
left and 30' right or each
successive lement.
The minimum istance etween
he two longseamsshallbe
50mm
r
six imes he
pipe
wall
hickness hichevers
greater.
The distancebetween wo successlve
ircumferentialutt
ioints
shall
be minimumof
SAmm r one time diameterwhich ever s oreater.
g.
After
completion f
the
oint
it up,
pipe
itterwill makea box adjacento the
oint
markinghe
Joint
no.,
provision
or Fit up & Weld Visualsign off
from the welding
Inspectornd orwelderdentificationos.
Pipe Fitter Piping oremanwill check
he fit
up
and
advise
he areawelding
nspector
for
clearance.
Welding nspector hecks it up,
identification
f spool
nos. and upon his
satisfaction
lears
he
joint
fit up and notes down
the
applicable
WPS to be used or
welding
and
preheat
emperaiure,f required. There shall
no
be
no
stress
placed
onto
equipment
ozzles rom
piping.
No
pipe
springing llowed.
All valves, strainersand inline items shall be installed as per /atesf approved drawing
and ensure the actual
flow direction of the svstem and valves marked
flow direction
shallbe the same direction.
All bolts and nuts shall be
protected
with anti seize compound o
prevent
corrosion.
L
Al l
p ip ing
lange
bol tsare
o be t ightenedtorque s applicablend
orque alues
hall
be as
per
the
project
spec. Bolt ightening equenceshall
be followed, s
per
the boll
t ightening
rocedure
i l lbe submittedeparalely.
Dimensionalolerances
hal l e
ol lowed
s
per
attachment-1f company oc.no:
RLO-
0000-LPR-0009.411ngular imensions f bends
and branches hal lbe maintained
within 1 deoree.
a.
b .
n .
J .
k .
ComDanv oc.No:RL0-30601-l\,432-42 Rev.03
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l - l
'8
iDodsel
n.
All he emporary ttachments,
ugsandstrong
acks nd ack
welds sedduring
ifup
shallbe
made n accordance
ithapproved elding
rocedure
ndshall
be welded y
the
qualified
welder's. Upon/during ompletion
of welding,
all the temporary
attachmentshall be
removed y using
grinding
nd
ground
lush with the base
material,nd nspectedisuallyollowed y Magneticarticle/dyeenetrantest.
Pipe suppotis
nstallation nd weldingshall be done
as
per
the approved
sometric
drawings
and
painting
of the sameshall
be done according o
the
proiectpainting
soecification
eferDoc.No:RL0-0000-WSP-02005.
o.
After ine is mechanically ompleted nd
prior
to test
pack
submlsslon,
ine
shallbe
thoroughly heckedwith latestapproved
drawingand any changes
of dimensions,
rerouting& additional
weld
oints
shallbe markedon drawing
nd submit inal as built
draw
nq
o
the contractor/com
anv.
Welding onsumable ontrol
a.
Welding onsumableontrol hallbe followed s
per
he
approved CP
or control f
welding onsumableseferDoc.No: L0-306012-Q56-521.
b- All backingand holding ven shall be equippedwith
thermostat
nd
havingvalid
calibrationertificate.
owhydrogen lectrodeshallbe backed t a
temperature
00 '
C to 350'C or 2 hoursor as oer
he manufacturesecommendation.fter2 hoursof
backing,he sameshallbe shifted
o
holding venand
maintain temperaturel50"C
prior
o ssue.
c.
Welding
lectrodehall
be ssuedor
production
romholding vens nlyand carrying
theelectrodeso fieldby portable vens/quiversaintainedt a temperature0'C o
100'C.
Un usedelectrodes
hallbe return o storedby the end of shiftand shallbe
rebakedas
per
the manufacturer'secommendation.
aximum umberof times
electrodesanbe baked hallnotexceedhree
imes.
Welding
a. Allwelds ncluding eld epairs hallbe supported y he relevantWPS.All
heWPS's
shall be
supported by PQR's and shall be
qualified
n the
presence
of
COMPANY/CONTRACTORccording o the ASME Sec.lX and relevant
project
soecifications.
b. All the relevant nd latestapprovedWPS's copy will be availablewith welding
foremaniwelding
uperintendentnd
t will
be
displayed ear he weldarealwelding
consumableontrol tore ocated t site.
c. Daily oolboxalksshallbe conducted y
the
weldingoreman/weldinguperintendent
andexplain
o the welder'so follow he welding equirements.hewelder hall tr ictly
adhere o the WPS, and shall be moni tored y the Welding nspectorAlVelding
Superiniendent.
d.
Before
tartwelding,heck he
oint
or cleanlinesso ensurehat he
oint
and
oint
both ides f basematerialt least 5mm hall e clean nd ree rom
paint,
i l ,dirt,
scale,
xides ndother
materialsetrimentalowelding.
7.8
7.9
CompanyDoc.No:RL0-306012-[,,132-402ev.03
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f.
J
n .
t_
n .
o.
Before welding,
ensureearthing
s
properly
connected o
the
ob
to
prevent
oss of
amperage
nd arc strikes.
To avoiddamage
o the existing
Coating
Wrapping ue
o the welding nd
related
activities
uchas weldspatter,
rinding
tc.,
adjacent reas
t weld
oint
willbe mvered
with ireproof rotectiveovering fireblankets.
WeldingForemanwill allocate
a
qualified
welder
(approved
y
CONTRACTOR,
identified y
welder D card)
or
performing
he weldingand also
responsibleor
arranginghe
requiredillerwire & electrodes,
ind
shields,
amsand back
purging
whilewelding tainless teel,
preheating
f
ihe
oint
n accordance
iih he approved
WPS.
In case the
joint
requires
preheating,
fter
attaining he
preheating
emperature,
Welding oremanshall be checked
preheat
and
ensure
preheat
hall
be as
per
approvedWPS.EachWelder as been
provided
ith
a
set of Temperaturendicating
Crayon,and welder shall be
responsibleo check and
maintain he
inter
pass
temoeratures.
Weather
onditions
ecomeoo severe,
ike blowing indstrongly nd
rain s falling,
welding
hall
be
stopped
nless
rovided
dequate
hieldingrom he
wind
or
rain.No
welding hallbe carried ut on
wet basematerials.
ny moisture n surfaceso be
welded hallbe removed y
preheating
o 50oC
rior
o welding.
Welding f SS
oints
shallbe commenced
fter
purging
ithallowing ufficieniime o
displace
he
entrapped
ir and backing hallbe in accordance
ithapproved elding
oroceoure.
Aftercompletionf eachpassand before epositinghe nextpass he ointshallbe
cleaned f slag,
pores
or any r regularities.
he
purging
hallbe continued
ill he
end
of hot
pass
whilewelding tainless teel.
The electrode
uivers
hallbe always
lugged
nd he cover hall
be keptclosed. f
the welders aveany
problem
ith
he
oint
electrodeshallapproachhe
welding
Foremen r Weldingnspectoror
needed ction r clarificat ion.
After ompletinghe
oint
hewelderD Number hallbe entered
n thespace
rovided
adjacent
o the
oint.
Depends n the sizeof
the
oint
1 or morewelders anwelda
joint.
Thearea
performed
y each
welderwillbe clearlydentified ut,always areshall
be taken o engageminlmum
umber
f
welders n a single
oint.
lf more han
one
welder s used to complete .loint, all welders D's are to be confirmed n QC
documentation.
Ensure Joint shall
not
be
moved/lifted until welding at least 2
passes
or
1/3'"
of
wall
thickness is completed, some critical applications
lifting of
joint
with out complete
welding shallbe notified o contractor/company.
At the end of each shi f lwelding oreman hal l
prepare
l ist of a l l
the
oints
whose
welding as beencompleted ndsubmit o
theWelding
QC
Inspector
m.
Company
Doc.No:R 0-306012-N/32-402ev.03 Page12of
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7.10 Visual
nspection nd NDT
a. Welding
nspector ill nspect
ll weld
oints
visually othcapping
nd rootwherever
accessible
o meet
he
project
equirements.
e will verify ll
he details onf irming
o
themarkings djacento the oint.
b. After nspectionnd
con{irmation
f acceptance,he isi
will
be
given
0
he
Contractor's
Inspectoror inspection
review. Once
the
Contractor's
nspector
ompletes is
inspectionhe signed
DWR, copiesshall be distributed
o the
ProjectControls
department,
ieldNDE& PWHT oordinator
ndContractor's
elding ngineer.
c. NDEand
PWHT
oordinator
rganizes
he lagging nd dentificationf
weld
oints
with
NDESUPPLIER.
he NDE equestshallbe
ointly
igned
ffas acknowledgement
or
witnessinghe
oini
and
confirmationor availabilityf access
nd ightingor carrying
out he NDEactivities.
d.
NDE& PWHTCoordinator ill
receivehe NDE reports nd PWHTcharts
rom he
NDE
SUPPLIER
nd PWHT upervisorespectively.
e will reviewhe PWHTChart
andafter igning ubmit
o heCONfRACTOR
or review ndsignature.
e. The signed
PWHT
Chart
will be retained y the CONTMCTOR nd
a copyshallbe
issued o the
SUBCONTRAGTOR
or reference. he NDE &
PWHTchartswill be
issued o the site
QA"/QC
ngineeror updating
nto he field raceabilityecords n
daily asis nda
master opy hall e maintainedy
he NDE
PWHT
Coordinator.
f. After ompletionf PWHT ndNecessary
DT,NDTcoordinatorill eleasehe
oints
for est ing. estingwillbe carried utas
per
he approved
rocedure
illbe submitted
separately.
g.
Arc strikes outside weld bevels shall be avoided,
if
any occur,
the deposit shall be
carefully removed by
grinding
and the area shall be
100%
examined
by magnetic
particle
test
(on
magnetic
materials)
or dye
penetrant
test
(on
non magneticmaterials).
All repairs shallbe done according o the approved
welding
procedure.
7 11 RepairsManagement
a. Once a
repair s identified, or
joints
sizes below 2" NPS the full
oint
will be cut and
re-
welded. For
all
other sizesbased on the extent of repair, the Welding Superinlendent
shalldecide whether
oint
is to be repaired ocally or the
oint
is to be cut and
re-welded.
For localized ocations the repair shall be marked from lhe tracersgiven by the NDE
co-ordinator.
b. The
oint
will be excavated by
grinding
and
excavated
portion
shall be sufficient lydeep
and long to remove the defect.
The width
and
profile
of excavated
portion
shall have an
adequate access or rewelding.
c. After repair removal shall be followed by
MT/PT to
ensure
the defect is completely
removed and re-welded as
per
the approved
repair weldtng
procedure
and necessary
NDE & PWHT shall be
performed.
The information regarding the obseNation
on
the
repair
shall be recorded as
found
/
not found and
given
to the welding engineer or his
review
and
records.
Company
Doc.No:
Rt0-306012 \,432-402ev.03
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8.0
7.12
Reporting nd
DataManagement:
NDE SUPPLIER hall
maintaina database,
whichcan
provide
all necessary
uality
epofts
and nformation or maintaininghe Quality.
The nput or the
Date Base s:
.
Joints
markedup Isometrics
or creating he basic
data.
.
Daily WeldingRepofts
.
Lrsfof SpoolsReleased
or NDE
c
AIINDERequests
.
All NDE epofts
.
Lisf
of Spools
Releasedor Painting
TheOutput btainedrom he
Data Base
.
WeeklyWelderPerformance
Reports
.
Sfafusof TracersMarking
o
LineC/ass
wlse NDE
summary
ndcoverage
.
WelderWiseNDEcoverageor Random adiography
oints
.
No.
of Joints
welded
and
No.
of
Jointsbalance or weldinq
.
No-
of Joints alance
or Radiography
.
No. of Jointsbalance or PWHT
.
No-
of Jointsbalance
or RT repair
.
Sfafus f Spoo/s nder abrication, nderNDEclearance r
underPainting.
Statusor he same shallbe submittedo contractor
QC
department n weeklvbasis.
HEALTHSAFETYAND ENVIRONMENT
1- Tool Box Talks
shall be conducted
before the commencement f new activityand
everydaymorningdetailing
he risks nvolved n the activities
oing
o be carriedout.
2. Before
commencement
of work SafeActivity Pre-Check
(SAP)
sheefs
sha//
be
filled
as
attached.
3.
All
personnel's
hall
worn necessaryPPE all times during the work.
4. Ensure all lifting equipment and accessories shallbe cerlified or their capacity, validity
and
quafterly
color coded as
per
constructionHSE
plan-
5.
All
electrical equipment shall be
inspected
and
properly
earthed by a
qualified
electricianand
quarterly
color-codedas
per
constructionHSE
plan.
6.
The
excavated
rench
area
will
be barricaded t
least2M back,with safety ibbonwith a
bi l lboard ispaying
Deep
Excavation".t n ight, l inking ghts& safety
r ipodwi l l
a lso
be displayed round he excavationrea,
whenever
equired. ardbarr icadinghal lbe
provided
or excavation eyond2-meterdepth.
7. Proper rigging studies shall be done on case-lo-casebasis for exact crane
positioning
and safe iftind oDeration.
CompanyDoc.No:RL0-306012-M32-402ev.03 Page 14
of 28
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9.0
8.
ln case of any emergency
during
nstallationof
piping
in trench,
piping
foreman
will ead
the team
for emergencyevacuation.
ATTAGHMENTS
1 Attachment-1
Dimensionalolerances
2. SWMS or UnderGround
Piping nstallation nd
Testing
3. SafeActivity
Pre
check
SAP)
sheet
CompanyDoc.No:RL0-30601-[,432-402
ev.03
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f:\
"4
DI
\4EI'I
OI']AL OLERANCES
{ 1 )
Nlaxlntir:,r.." r:.,Y3ble
ocational
olefan:':
.
max.
: l
i r r : ;
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n . )
For"lake-oul
posll ic'1"
l oriilce
low
meier
connecllon
.max.
11.5 mni
(1/6
n- )
Allowarii
i
l r i : in. ie
il Length
.. as
pe r
above
1 in
pi:i-.cipi4,
i'r,'iYer' may
be
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aliowence
for
adiustment.
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CompanyDoc.No:
RL0-306012 32-402Rev.03
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