Bid Clarification QuestionnaireRev 01.docx
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Bid Clarification QuestionnaireRev 01.docx
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BidClarificationQuestionnaireRev01
No
Ref
SASOL
BIDDER
General
PropyleneStorageBullet
InsideDiameters:
Shell
d
6000
mm
Sump
ds
2000
mm
Nominalthickness:
Head
th
40
mm
Shell
t
45
mm
Sump
ts
20
mm
SumpHead
tsh
18
mm
FibreElongation:
Head(knuckle)
[th/(0.17xd)]x100
%
Head(crown)
[th/(0.9xd)]x100
%
Shell
[t/(0.5xd)]x100
%
SumpHead(knuckle)
[tsh/(0.17xds)]x100
%
SumpHead(Crown)
[tsh/(0.9xds)]x100
%
Sump
[ts/(0.5xds)]x100
%
DepropaniserStabilisationDrum
InsideDiameters:
Shell
d
6000
mm
Sump
ds
2000
mm
Nominalthickness:
Head
th
44
mm
Shell
t
50
mm
Sump
ts
mm
SumpHead
tsh
mm
FibreElongation:
Head(knuckle)
[th/(0.17xd)]x100
%
Head(crown)
[th/(0.9xd)]x100
%
Shell
[t/(0.5xd)]x100
%
SumpHead(knuckle)
[tsh/(0.17xds)]x100
%
SumpHead(Crown)
[tsh/(0.9xds)]x100
%
Sump
[ts/(0.5xds)]x100
%
Q1.
Arethereanydeviation/exclusionsfromtheCodesandStandardslisted?
No
Q2.
Arethereanydeviation/exclusionsfromtheUserDesignSpecification?
No
Q3.
Arethereanydeviation/exclusionsfromtheSasolSpecification?
Yes
Q4.
Arethereanydeviation/exclusionsfromtheSasolStandardDrawings?
No
Q5.
DoestheBIDincludefor8000kgofstructuralsteelpervessel,includinganyattachmentstothevesselsuchas?
Pipingsupports
Platforms
Ladders
Clips
Fireprotection
Yes
Q6.
Hasapriceforanyadditionalstructuralsteelbeenincluded?
(PricemustbeincludedinCommercialBID)
Yes
Q7.
Hasthetake-out/add-inpricesforthenozzlesbeenincluded?
(PricemustbeincludedinCommercialBID)
No(Butpricemustbeincludedincommercialbid)
Q8.
UDS§8.3.5.b:
TheManufacturershalldesign,fabricateandtemporaryattachedaminimumof4transportationsaddles.
HastheBIDDERincludeforthedesignandfabricationoffouradditionaltransportationsaddles?
Yes
Q9.
UDS§5.2.2:
ThevesselshallbemarkedwithaU2symbolinaccordancewithASMESectionVIIIDivision2.
HasthecostoftheASMEU2certificationbeenincluded?
Yes
Q10.
WhowillbeusedastheAI?
BV
Q11.
Q12.
DoestheAIhaveISO/IEC17020accreditation?
Yes
Q13.
Whatallowancewasmadefordocumentationturnaroundtime?
Q14.
BIDDERtoprovidealistofallPressureVesselsfabricatedusingthenewDivision2.ListtoincludePressure,MDMT,diameter,thickness,length,materialandclient.
Yes
Q15.
UDS§5.2.2:
PressureEquipmentinSouthAfricaisgovernedunderthePressureEquipmentRegulation(PER)dated2009andfullcompliancetothisRegulationismandatory.
HastheBIDDERstudiedthecontentofthePERtosuchextentthatfullcompliancetothePERcanbeguaranteed?
Yes
DocumentsandDrawings
Q16.
SP-42-2§3.1:
Thetextinallengineeringanddesigndata,drawings,notes,tables,technicalinformationandreportsandcomputationssubmittedtoSASOLshallbeintheEnglishlanguage.
Willalldocumentation,includingthosefromsub-vendorsandsub-contractors,besubmittedinEnglish?
BothEnglishandChinese,Englishversionshallbeprevailedineventofanyinconsistencybetweentwoversions
Q17.
BIDDERtoexplainhowthedocumentationflowwillworkbetweentheAI,SASOLandhimself.
BidderwillsubmitthedocumentationtoSASOLforreviewandapprovalandAIforreview
Q18.
SP-90-32§10.1:
SASOLrequiresonesigned,legiblehardcopyperdrawingaswellasoneelectronicCADversionperdrawing.
IstheBIDDERawarethattheelectronicdrawings(.dwgand.pdf)needtobesubmittedaspartoftheEOJ?
Yes
Q19.
SP-90-32§3.7:
ThedrawingtitleblockshallcomplywiththeborderfilesasissuedbySASOL.
WillSASOLBorderfilesbeusedforthecreationofdrawings?
Yes
Q20.
SP-90-32§3.21:
FinaldrawingsshallnotbearanystatementthatlimitstheirfutureusebySASOLforreplacement,maintenance,modification,orrepair.AnyexceptionsshallrequirewrittenapprovalbySASOL.
WillalldrawingsbecomethepropertyofSASOL?
Yes
Q21.
SP-90-32§3.20
Nocontractorlogoshallappearonanydrawings.Onlythecontractingcompany’snameshallbeaddedtothedrawingsinthespaceasprovidedforintheblock/seedfiles.
Willthecompanylogoappearonthedrawings?
No
Q22.
Hasthecostofthe“AS-BUILT”drawingsbeenincludedfor?
Yes
Design
Q23.
Willthedesignbecontractedout?
Ifyes,who?
No,onlystressanalysiswillbecontractedout
Q24.
DidtheBIDDERincludeforallthedesigncalculations(Codecalculations,FEA’s,transportation,lifting,etc.)?
Ifnotwhatwasexcluded?
Yes
Q25.
UDS§2.1:
TheuseofASMESectionVIIIDivision2islimitedasfollows:
a)TheASMESectionVIIIDivision2Part4(DesignbyRule)approachshallbefollowed.ASMESectionVIIIDivision2Part5(DesignbyAnalysis)shallonlybeusedintheinstanceswerePart4doesnotspecificallyaddresstheproblem.
b)TheapproachofASMESectionVIIIDivision2Part5islimitedtoonlytheElasticAnalysis.Limit-LoadandElastic-PlasticStressAnalysisMethodarenotallowed.
c)TheuseoftheFatigueAssessmentofWelds-ElasticAnalysisandStructuralStress(ASMESectionVIIIDivision2Part5§5.5.5)isnotallowed.
d)OnlythegeometriespreviouslyacceptedbySP-42-2intheASMESectionVIIIDivision2priorto2006willbeacceptable.
Istheintendeddesignmethodologyin-linewiththelimitationstipulatedintheUDS?
Yes
Q26.
UDS§8.3:
UDS§8.3.1.Design
UDS§8.3.1.ShopPressureTest
UDS§8.3.2.FieldPressureTest
UDS§8.3.3.Operating
UDS§8.3.4.TranspirationandErection
HastheBIDDERallowedforalltheloadcombinations?
Yes
Q27.
DoestheBIDDERunderstandthedifferencebetweenShopandFieldPressureTest?
Yes
Q28.
Willthesaddlesbedesignedforthepressuretestscenarios,i.e.vesselfullofwater?
Yes
Q29.
SP-42-2§4.4.3:
Themanufacturershallberesponsibleforthecorrectnessandaccuracyofallcomputerprogrammesusedforthestresscalculationandstressanalysisusedtodesignthevesselandfortheaccuracyofthecalculationresults.
Whatsoftwarewillbeusedforthedesign?
PVELITE
Q30.
Howwastheaccuracyofthesoftwaredetermined?
Fabrication
Q31.
BIDDERtopresenthisfabricationsequence.
SpecificattentionneedstobegiventothePHWTmethodologyduringthispresentation.
Yes
Q32.
SP-90-1§8.4.3:
Pressurevesselcomponentsincarbonandlowalloysteelshavingafibreelongation(ratioofthicknesstolocalbendingradius)ofmorethan10%intheouterfibreshallbehotformedat,orabovethenormalisingtemperature.Allplatesthathavebeencoldformedwitharatioofthicknesstolocalbendingradiusmorethan5%shallbestressrelievedafterforming,dishingorrollingandpriortoanysubsequentfabricationoperations.Additionally,whentheactuallocalthicknessreductionexceeds9%,re-heattreatmentandre-certificationofthebasematerialismandatory.
SP-42-2§7.1.1:
Pressurevesselheadsorheadpartsshallbeformedbywell-establishedfabricationmethodssuchaspressingorspinning.Anyotherfabricationmethods,includingpartialformingorstretching,requireSASOL’sapproval.
Whatformingprocesswillbeusedduringthefabrication?
Component
Fabricationprocess
Head
punching
Shell
rolling
Sump
rolling
SumpHead
spinning
Q33.
Inthecaseofafibreelongationofmorethan5butlessthan10%,doestheBIDincludeforthestressrelievepriortoanysubsequentfabricationoperations?
Yes
Q34.
Inthecaseofafibreelongationofmorethan10%,doestheBIDincludeforhotformingandsubsequentre-certificationandtesting(includingPWHTsimulations)?
Q35.
Whatistheheadconstruction(seamless,welded)?
Ifwelded,pleaseexplainhowtheweldswillbeaddressedduringfabrication?
Weldedandseamless
Q36.
SP-42-2§5.5.4:
PlatesurfacesshallbedescaledandsmoothtoallowproperinterpretationofUTtestresults.Ifplatesareorderedheat-treated,surfacesshallbeblastcleaned.
Howwilltheplatesbecleanedbeforeforming?
cleaning
Q37.
UDS§8.1.
PWHTYes
HastheBIDDERincludeforthePWHTofthevessels?
Yes
Q38.
HowwillthevesselsbePWHT(complete,sectional,local,etc)?
Sectionalandlocal
Q39.
HowmanyPWHTcyclesarerequiredforthefabrication?
Threeorfive
Q40.
SP-90-17§3.8.2.b:
Eachmethodforlocalheattreatmentshallbequalifiedbyarepresentativemock-uptesttodemonstratethetemperaturedistributionandlackofharmfulthermalgradients.Themock-upshallrepresentasfaraspossibleproductionconditions.Previousheattreatmentoperationsmaybeusedinlieuofmock-uptestifenoughrecordedinformationisavailableandisacceptedbySasol.Sasolmaywaivemock-uptestonpipegirthweldsbasedonsizeofpipeandsizeofHB.
SP-90-17§3.8.5
ThermocoupleLocation
BIDDERtoexplaintheconstructionoftheL-PWHTfurnace?
Electricfurnace
Q41.
DidtheBIDDERincludefortherequiredmock-uptestingofallintendedL-PWHT?
Yes
Q42.
DidtheBIDDERincludefortheadditionalthermocouplesrequiredforL-PWHT?
Yes
Material
Q43.
Pleaseprovideashortlistofproposedmaterialsuppliers.
(Sasolreservestherighttoacceptordeclineanyproposedmaterialsupplier.MoreinformationwillberequestedofthematerialsuppliersnotknowntoSasol)
Material
PotentialSupplier
Plate
WuyangSteelCo.,Ltd
Forgings
WuxiFlangeCo.,SuhuForgingCo.,
WeldingConsuma
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