Piping Design Basis

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JOBORDER:10-03157-0001 Page1of26MIDYANGASPROCESSINGFACILITIES

CENTRAL&WESTERNREGIONSPROJECTDEPARTMENT/MIDYANGASPLANTPROJECTSDIVISION(MGPPD)

BI-10-03157MIDYANGASPROCESSINGFACILITIES

A 16-OCT-2013 ISSUEDFOR30%DETAILEDDESIGNREVIEW AKH DKD SB VK R

REV. ISSUEDDATE DESCRIPTIONPREPARED

BY(ENG)

REVIEWEDBY

(LEADENG)HOD PEM

APPROVEDBY

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INDEX

1.0 SCOPE:-........................................... .......................................................................................5 2.0 PLOTPLAN:-....................................... ...................................................................................5 3.0 UNITPIPING:-..................................... ....................................................................................8 4.0 UNDERGROUND/BURIEDPIPING:-...................... ............................................................12 5.0 FLEXIBILITYANALYSISANDSUPPORTING:-............. .....................................................12 6.0 PIPINGMATERIALS:-................................ ..........................................................................17 7.0 THERMALINSULATIONOFPIPING,EQUIPMENT&VESSELS:- ...................................18 8.0 SURFACEPREPARATION,PAINTING/COATING&COLOURCOD ING:-......................19 9.0 CATHODIC-PROTECTIONFORUNDERGROUNDPIPINGSYSTEM:- .............................19 10.0 MISCELLANEOUS:-................................... ..........................................................................19 11.0 REFERENCES:-...................................... ..............................................................................20 12.0 ANNEXURES:-....................................... ...............................................................................24

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ABBREVIATIONS:-

AARH : ArithmeticAverageRoughnessHeightANSI : AmericanNationalStandardsInstituteAPI : AmericanPetroleumInstituteAS : AlloySteelASME : AmericanSocietyofMechanicalEngineersASTM : AmericanSocietyforTesting&Material sAWWA : AmericanWaterWorksAssociationBHN : BrinellHardnessNumberBS : BritishStandardBS : BoosterStationBW : ButtWeldCBD : ClosedBlowDownCS : CarbonSteelDPT/I/E : DyePenetrantTest/Inspection/Examina tionEFSW : ElectroFusionSeamWeldedEPCC : Engineering,Procurement.ConstructionandCommissi oningGC : GatheringCentreHAZID : HazardIdentificationIGC : InterGranularCorrosionISO : InternationalOrganizationforStandardizat ionLTA : Larsen&ToubroArabiamax. : Maximummin. : MinimumMOC : MaterialOfConstructionMOV : MotorOperatedValveMPT/I/E : MagneticParticleTesting/Inspection/ ExaminationMSS : ManufacturersStandardizationSocietyNB : NominalBoreNACE : NationalAssociationofCorrosionEngineer sNDT/I/E : NonDestructiveTesting/Inspection/Ex amination

.

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OD : OutsideDiameterP&ID : PipingandInstrumentationDiagramPFD : ProcessFlowDiagramPMS : PipingMaterialSpecificationPsi,g : PoundsperSquareInch,GaugePZV : PressureSafetyValvePUF : Poly-UrethaneFoamPWHT : PostWeldHeatTreatmentQRA : QualitativeRiskAnalysi sRF : RaisedFaceRP : RecommendedPracticeRTJ : RingTypeJointRTRP : ReinforcedThermosetting ResinPipeSCRD-M/F : Screwed-Male/FemaleSS : StainlessSteelSP : SpecialProducts/Stan dardPracticeSW : SocketWeldTPIA : ThirdPartyInspection AgencyU/G : UnderGroundUFD : UtilityFlowDiagramVMS : ValveMaterialSpecificationWN : WeldNeck

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1.0SCOPE:-

This Document briefly describes the basic requireme nts for the Design of Piping Systemscovered by ASME B31.3 for the project Midyan Proce ssing Facilities. This document isdeveloped based on feed Basis of Design: GE-E0010 a nd shall be adhered to during thecourse of Detail Engineering, Procurement, fabricat ion, Transportation, Erection, Installation,Testing,Inspection,Pre-commissioningandCommissi oning.

GENERALDESIGNPHILOSOPHY :-

2.0 PLOTPLAN:-

2.1BasisofPlotPlan

Layoutforthefacilityshallbedevelopedconsider ingtheinputsfromfollowingdocuments: OverallPlotPlan(PI-A100001.001Rev-0A) PlotPlanProcessArea(PI-A100001.002Rev-D) PlotPlanUtility&StorageArea(PI-A100001.003, Rev-C) PlotPlan-Flare&BurnPitArea(PI-A100001.004,Re v-D) PlotPlanSubstationArea(PI-A100001.006,Rev-B) PlotPlan-EvaporationPondsArea(PI-A100001.007, Rev-B) SitePlan-(PI-A100001.005,Rev-D) EquipmentList/Process&MechanicalDataSheets. BasicDesignData. QRArecommendations. StatutoryrequirementsofHSE,SeparationDistance sasperAramcoguidelines(SAES-

B-005,SAES-054&SAES-B-055). SiteVisitReport.

2.2ConsiderationsforthefinalizationofPlotPla n

Followingaspectsshallbeaddressedduringplotpl an/equipmentlayoutdevelopment. 2.2.1 GeneralguidelinessetbySaudiAramcoEngi neering.

StandardforPlantLayout(SAES-B-055)

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Access,EgressandmaterialhandlingforPlantFac ilities(SAES-B-054) SpacinganddikingforAtmosphericandlowpressur etanks(SAES-B-005) ElectricalAreaClassification(SAES-B-068) DesignofPlantPiping(SAES-L-310) Any other applicable Saudi Aramco Engineering stan dards and specification and

AmericanSocietyofMechanicalEngineers(ASME)Cod eASMEB31.3.

2.2.2 Proper interconnection between equipment as per P&IDs to achieve the intendedprocessrequirementofnopocket,slope&freedrai ning.

2.2.3 Process area battery limit shall be marked i n plot plan. All equipments handlinghydrocarbonsshallbe locatedwithin thisprocessa reabattery limit.All safetydistances fromthe process area battery limit to any other facilit y outside the process area shall be as perSAES-B-055guidelines.

2.2.4 Minimizethequantityofexpensivepiping(s uperior&exoticmetallurgyandlarge/heavysizes&schedules).Theemphasisshallbetoavoidc riss-crossingoflines&theequipmentwithassociated piping shall be aligned to themain proc ess/ utility flowdirection and `incoming&outgoing processandutility streams.The samesha ll be verified through3DModel&modelreviewsessions.

2.2.5 Erection & Construction requirement: Plant a ccess, Erection scheme, lay down area,cranepositioning& implicationofconstructionseq uence,arrival-at-siteofequipment/ModulesshallbeconsideredduringfinalizationofPlotPla n/equipment-layout,soas tohavesmooth&sequentialerection,mainlywithregardtoheavyeq uipment/over-dimensioned-consignments.

2.2.6 SafetyRequirements:Thesafetynorms&me asuresshallbestrictlyadheredtoasperSaudiAramcostandardsandguidelinesand thosesug gestedby losspreventionengineer toensure safe work environment during all phases of p roject life cycle. Any otherrecommendation arising from HAZOP, SIL, Building Ri sk Assessment, Fire Risk analysis(FRA),FlareRadiationAnalysisshallalsobeimple mented.

2.2.7 EyeWash & Safety Showers (EWSS) shall be pr ovided near the facilities involvingchemicalhandling.

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2.2.8Constructability,Commissioning,Operation andMaintenanceRequirements:

Overheadandsideclearancesforvessels,exchang ersandpumps. Provisionofexchangerstubebundlepullingarea. Horizontal & overhead clearances for easy movement of operating

personnel/maintenancevehicles. -Barrel/Rotorremovalformultistagepumps. CraneapproachesforAir-Coolers/Compressors. Provisionofmonorail/E.O.Tforpumpsaspercontr actualrequirementofProjectScope. Alternateaccessforfirefighting.

2.2.9 MidyanProcessingFacilitiesshallbemodu larbased,skidmountedunits.Modularunitsshall be shop fabricated, tested and pre commission ed to the extent feasible & within thelimitationofmodulesizesfromtransportationcons ideration.

2.2.10TheoverallplotplanforMidyanProcessin gFacilitiesshallbedevelopedasperSaudiAramcoEngineeringStandardbyconsideringprevaili ngwinddirectionofWajehWNW.

2.2.11Equipmentarrangement inprocessmodules hallbeprovidedwithadequatespace tofacilitate operation and maintenance and with minim um spacing requirement as per SaudiAramco Engineering Standard SAES-B-055, Layout of each module and spacing betweenmodules shall allowaccess for equipment from relev ant sides.Howeverall efforts shouldbemadetoimproveupontheaccessaisles/spaceinmod ulesw.r.t.feedlayout.

2.2.12 Roadways inplantsandother facilities width,overheadclearances,shoulderwidthetc.shallbeprovidedinaccordancewithclause9. 5ofSAES-B-055.For access to tankageareashallprovidedinaccordancewithclause4.13 ofSAES-B-054.

Spacing and diking for Atmospheric and low pressur e Tanks shall be as per SAES-B-005guidelines.Spacingbetweentanksandassociatedeq uipmentsshallbeasperclauseno.5.2of SAES-B-005. Table 1 shall be followed for minimu m distance requirement two tanks orbetweena tankandotherequipment.Dikingrequirem entshallbeguidedbyclauseno5.3ofSAES-B-005.Dykedesignandconstructionshallbea sperclause5.3.8ofSAES-B-005.

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3.0 UNITPIPING:-

3.1BasisofUnitPiping

3.1.1 Followinginputsshallbethebasisofunit- piping.

Overallplotplan EquipmentLayout. Structural&ArchitecturalBuildingDrawings. topographyoftheplant-site. Piping & Instrument Diagram (P&ID), Utility Flow D iagram (UFD) & Process Flow

Diagram(PFD). Meteorological&Geo-technicaldata. LineDesignationTable. EquipmentData-Sheet&Setting-Plan. InstrumentData-Sheet. Piping&ValveMaterialSpecification(PMS&VMS). SpecificProject/Clientrequirements. SaudiAramcoEngineeringStandards&Specification s.

3.1.2 Thedesignofplantpipingshallbeinacco rdancewithSAES-L-310.

Thedesign&conceptualizationofUnit-Pipings hallbefocusedtowardsmeetingthe followingbasicobjectives:

Process,P&IDandPFDrequirements&stipulations. Access to all operating-points including valves, s pacers & spades, strainers, sample-

pointsandinstrumentations. Avoidunnecessarypockets, dead-ends&dead-legs. Piping runs shall beas short as

possiblewithminimumnumberofelbows. Properaccessshallbeplannedw.r.t.`interrelate d-operating-pointsforspecificpurpose

andforcontrol&maintenance.

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Unobstructed & unhindered crane-access shall be pr ovided during construction &likewisemaintenance-vehicles,(hydraulic-cranes& fork-lifts)shallhave adequate-access/approachtocriticalequipmentduringplant -operation.

Adequate access, egress and material handling for plant facilities shall always beprovided for process, operating & maintenance perso nnel within the unit/ plant inaccordance with SAES-B-054, SAES-J-003 and PIP PCCG N002. Howeverclearance/accesswithinthemodulesmaybecompromi sedinspecificcasetooptimizethemodule/skidsizewhichcanbereviewedduringm odelreviewsession.

Adequate access to valves, instruments, nozzles et c shall be provided thoughplatforms, scaffolding, mobile stair, permanent lad ders for module and non modulepipinginlinewithPIPPNE0003andPIPPCCGN002.H oweversamecanbereviewedduringmodelreviewsessions.

Trippinghazardsshallbeminimizedinmodules. Isolation,draining&venting,flushing&purging provisionsshallbeprovided. Piping connected to rotatingand reciprocatingequ ipment, pumpsetc. shall beasper

SAES-L-310.

3.2 Pipe-Rack/SleepersPiping

3.2.1 ThePiperacksshallbe laidoutsuch that t heyshallprovide thenecessaryaccessforalloperationsandmaintenance.Theelevationsof i ntersectingpipewaysshallnormallybeatdifferentleveltoallowforfuturepiping.Aminim umof20%spaceofthetotalwidthofthepiperackshallbeearmarkedforfutureexpansiononthe piperack.

3.2.2 Finfanexchangersshallbelocatedoverthe mainpiperack.

3.2.3 Generallythehot linesandcold linesshall bekeptapart indifferentgroupsonarack-tier/sleeper.Predominantlyprocess linesandutili ty linesshallbekeptatdifferent tiers/levels.However incase if thesameisnotfeasibledueto layoutoranyotherconstraintprocessandutilitylinesshallbesegregated&groupedseparat elyonthesametier.

3.2.4 Generallythebiggersize linesand linesre quiringexpansionloopshallbekeptnearertotherackcolumn/edgeofrackorsleeper.

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3.2.5 Theminimumspacingbetweenlinessupported onsleepersorpiperackshallbeasperStandard drawing AC-036207. However in case of any space constraint, followingminimumspacingshallbeadoptedtofixthepipetopipein terdistances:

Minimumspacing:ODofbiggersizeflange(Aspe rlinerating)+ODofsmallersizepipe+IndividualInsulationthicknessofpipes+25mmcl earance.

3.2.6 Actual line spacing, especially at L bends and loop locations, shall take care of thethermal-growth (expansion/ contraction) of adjacent lines to allow clash-free thermal-displacements.

3.2.7 Anchors on the pipe-racks/ sleepers are to b e provided on anchor-bays/ anchor-sleepers. As far as possible anchors shall be distr ibuted over two to three consecutivebays/sleepers.

3.2.8 Small Bore piping shall generally be always grouped together for ease of supporting.Intermediate supports shall be considered in accord ancewith allowable basic span for smallborepipe,asapplicable.

3.2.9 Theminimumsleeperheightshallbemaintain edas300mm.

3.3 Relief/BlowDownSystemPiping

3.3.1 ReliefSystem/Blowdownsystemdesignshall beasperSAES-F-007.

3.3.2 Theminimumhorizontal spacing requiremen ts for flares shall be in accordancewithSAES-B-055

3.3.3 Forburnpitflaresthelast100M(328ft )oftheflareheadersandauxiliarypipingshallbeburiedundergroundorprotectedbyradiationshi eldasperclause6.7.10ofSAES-F-007.

3.3.4 Pressure relief valves, depressuring valve s and pressure control valves outlets shallenter the flareheader fromaboveandatanoblique angle to theheaderandshallbeasperAramcostandarddrawingAE-036550.

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3.3.5 All piping (including headers between flare knockout drums and flares) shall be self-draining into the unit and/or flare knockout drums. Aminimum slope of 1:475 (21mm in 10meters)shallbemaintainedasperclause6.14.5of SAES-F-007.Flat expansion-loopshallbeprovided in horizontal plane as per requirement to accommodate thermal expansion. Thedesign-slopeshallbeensured throughout including flat-loop.Flareheadershallbesupportedonshoeofheightrangingfrom100mmminimumto35 0mmmaximum.

3.3.6 Proper thermal analysis temperature shall be established including the possibility oftemperaturegradientalongthelinebeforeprovidin gexpansionloops.Effortsshallbemadetominimizethenumberofloops

3.3.7 Pocketsintheflareheaderandblowdown systemshallbeavoided.

3.3.8 Inlet and outlet piping of pressure relief valve shall be adequately supported to takecareofthereactionarythrustinducedbytherelie fvalveduringpopping.

3.3.9 Reaction forces due to safety valve popping shall be ascertained in the connectedpiping according toAPIRP520, for systemsdischar ging to atmosphere. The effect of theseforces on the piping supports, anchors and the supp orting structure shall be adequatelyaddressed.

3.4 Utility-Stations

3.4.1 The requirement of utility-stations shall be in accordance with the P&IDs. Whererequiredformaintenanceorcleaningpurpose,utili tystationshallbeprovidedatgradetocovertheentireprocessareaandatworkinglevelsfore levatedequipment,wherenecessary.

3.4.2 Utilitystationforwater&airshallbeloc atedsuchawaythatalltheequipmentshallbeapproachable from at least one utility station with a 15 mtr hose. The utility station shallgenerallybelocatedadjacenttopipe-rackcolumn.

3.4.3 Clause18.4ofSAES-L-310shallbefollowed for typeofconnectorsandcolorcodeofthesame.

3.4.4NitrogensupplyinUtilitystationsshall beincludedasrequiredbyprocess.

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3.5 InstrumentAirPiping

3.5.1 Allmainandbranchheadershallbeslopedm inimum64mmper30m(2.5 inchesper100 ft)and providedwith lowpointdrainasperC lauseno4.8.1.2ofSAES-J-901.Minimumsizeofinstrumentairpipeheadershallbe2ofs chedule40.

3.5.2 Each branch header shall connect to the top of main header through a branch-line-size,fullboreisolationvalve.

3.5.3 Supplytakeoffstoindividualinstrumentssh allconnecttothebranchheaderthroughatakeofflinesize,fullboreisolationvalve.

3.5.4 Instrument air piping shall not be pockete d (i.e. shall not contain U sections).Howeverany specific caseof pocket formationdue t o layoutconstraint shall be reviewedforfurtherconsiderationcasetocasebasisandif foundunavoidableshallbeprovidedwithdrainvalve.

3.5.5 Pipingmaterialforinstrumentairpipingsh allbegalvanized.

3.6 FireFightingSystemPiping

Piping system designated for fire protection water system in plant areas shall comply withSAES-B-017,foamsystemshallcomplywithSAES-B -018,portable,MobileandspecialfixedfirefightingequipmentshallcomplywithSAES-B-0 19.

4.0 UNDERGROUND/BURIEDPIPING:-

4.1 Underground or buried piping system shall be de signed in accordance to clause 13 ofSAES-L-310.

5.0 FLEXIBILITYANALYSISANDSUPPORTING:-

Flexibility analysis of all piping systems shall b e carried-out in accordance with ASME B31.3andSAES-L-120,SAES-L-310

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5.1 PipeSupportingCriteria&GeneralGuidelines

5.1.1 LoadConditions, as per clause 8, SAES-L -120 shall be used for performing stressanalysisandsupportingofpipingsystem.

5.1.2 Pipesupportingshallpreferablyfollowth ebasicspanasgiveninAnnexure-I.ForsizesnotcoveredinAnnexure-I,basicspanshallbeesta blishedbasedonprojectrequirement.

5.1.3 Pipingonrackorsleeper,shallbesupport edoneverygrid.Guidesshallbeprovidedonstraightrunofpipesat intervalsasspecifiedin Annexure-III,unlessspecificallybecomesnon-viableduetoflexibilityproblems.

5.1.4 Additional supports, guides, anchors, spec ial supports like spring supports and swaybracesshallbeprovidedbasedupondetailedanalys isofpipingsystemtorestricttheforcesonnozzles of critical equipment like pumps, compresso rs, turbines, exchangers, air-coolers,columns&towersetc.

5.1.5 A permanent support shall be provided for lines which do not need any supportingotherwise but require supporting duringmaintenance . This support shall be either resting orspring-support.

5.1.6 Bare pipes of size 14NB and above shall b e supported by saddle type support withreinforcementpad.

5.1.7Adequatecareshallbetakenforsmallb orebranching,(1andbelow).

5.1.8 Wherever two phases with slug flow in pipin g is expected, piping design shall becheckedbydynamicstressanalysistopreventvib rations.

5.1.9 Pipe support design shall be such that defl ection in piping systems due to sustainedloadsshallnotexceed15mm,betweentwoadjacents upports.Forsloped-lines,itshallbesuchthattheslopeismaintained.

5.1.10 Averageinstallationtemperaturetobead optedforstress-analysiscalculationshallbe95F.

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5.1.11 Longtrunionsupport(morethan500mmheig ht)shallbeavoidedasfaraspossible,sothatitwillnotcreateexcessivestressesatthea ttachmentweldstotherunpipe.A6mmweepholeshallbedrilledforalldummysupports.Thew eepholeshallbelocatednearthebaseplateforallverticaldummysupports,neartherunpipe at6oclockpositionforallhorizontaldummysupports.

5.1.12 Piping passing through the structure or pas sing near the column etc. should haveadequatespacetoavoidrestrictionoflinemovemen tduringthermalexpansion. The gapshouldbesufficienttoavoidanyfoulingconsideri nginsulation.

5.1.13 All pipe-supports shall be so designed that there is no undue tension on equipment flanges.

5.1.14At any point of the piping system, and for any load combination, horizontaldisplacementshallbewithinthelimitspecifiedin clause6.2.1ofSABP-L-006.

5.1.15Rodhangersshallbeavoideduseforlines 12NPSandlargerinliquidserviceormulti-phaseflow.Themaximumswingangleduetohorizont alpipemovementwillbe limited to 4degrees.Rodhangershallbeprovidedwithmeansfo rvertical adjustment.

5.1.16 Springsupportsimmediatelydownstreamof rotatingequipmentwillbelimitedto 10-15%loadvariation.

5.1.17 Springhangerassemblyshallbedesignedfo rsustainingthehydrotestload.

5.2 FlexibilityAnalysis-GeneralGuidelines

5.2.1 GeneralGuidelinesmentionedinclause5of SAES-L-120shallbefollowed.

5.2.2 TherequirementsmentionedinSpecialRequir ementsclause9ofSAES-L-120shallbefollowed.However forpressure relief valveandde pressurizingsystemsDLF (DynamicLoadFactor)shallbetakenas2forloadcalculation.

5.2.3 Nozzle loadevaluationforrotatingmachine ryequipmentshallbecheckedforoperatingconditionagainsttheallowableforcesandmoments oftheequipment.

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5.2.4 Designofpipingsystemsshalltakeintoa ccountdifferentconditionsexpectedduringoperation,start-up,shut-down,coldbranchincase ofstandbypumpetc.

5.2.5 Steamoutisnotapplicable.

5.2.6 Whentheroutingofapipingsystemdoesn otinherentlyprovideadequateflexibility,thesameshall beprovided byadditional expansion-loop sor offsets.Bellowexpansion-jointsaretheleastpreferredmeansofprovidingrequisitefl exibility&theyshallnotbeusedwithoutpriorcompany/clientsapproval.

5.2.7 DetailedPipingStressanalysis reports shal l includedetails asmentioned inSAES-L-120,AppendixA,CaseA.

FormalPipingStressAnalysisreportsshallinclude thefollowing:

1.Operating/designparameters. 2.Pipingisometricdrawingsshallincludethefol lowing a) Dimensions b) MaterialSpecifications c) Locationanddetailsofrestraints. 3.HandCalculation/CalculationperformedwithCA ESAR. 4.Referencedchartsortablesifused.

5.3 CriteriaforAnalysis

5.3.1 The requirements mentioned in clause 6 of SA ES-L-120 shall be followed forcategorizingthelinesinPipingFlexibilityAnalys is.

5.3.2 Flangeleakagecheckisrequiredforthefol lowinglines:

-ASMEPrRating 600#:26NB&above,exceptair&waterlines. -ASMEPrRating 900#:08NB&above,exceptairandwaterlines. Allothercriticallinesconnectedtosensitiveeq uipmentsuchasplate-finexchangers, cold

boxes(sizes06NB&aboveandhavinganalysistemp .>250F&85F,analysis temperatureshallbeestablishedthrough

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mutual consentwith the process department.However , analysis of flare line& calculation ofthermalgrowthoftallequipmentshallbeperformed asperprocessinput.

5.3.4 The solar radiation temperature shall be con sidered for bare-lines, if the designtemperature is less than the solar temperature. The metal solar temperature shall beconsideredas160Fasperclause7.2bofSAES-L-1 20.

5.3.5 Dynamic analysis shall be performed wherever two phase flow with slug in piping isexpected as per the process requirement. Fundamenta l frequency of piping system shall bewell above imposed frequencies, if any, to avoid re sonance. The minimum acceptablefrequencyforlineswithslugflowshallbe06Hz.

5.3.6 WindAnalysiscriteria:

Windanalysisshallbeperformedforthelineslis tedunder`staticanalysis,iftheyfallunderthefollowingcriteria:

Anylineofsize 10NB,(includinginsulation,ifany)&routedat elevation 10m

Windloadonpipingshallbecalculatedina ccordancewithASCE#07.

Followingbasicwinddatashallbeconsideredfor wind-loadcalculationasperSAES-A-112forWajeh

Max.Basicdesignwindvelocity=145km/hr.

Windshapefactor=0.7

Windexposure =C,asperASCE#07.

Structuralclassification=2.0,Occupancycategor yIIasperASCE#07.

5.3.7 SeismicAnalysiscriteria

Seismic analysis shall be performed for the lines falling under the criteria of DetailedAnalysisasperchartB-1ofSAES-L-120

Seismicloadonpipingshallbecalculated inaccordancewithASCE#07.

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Following basic Seismic data shall be considered f or Seismic-load calculation as perSAES-A-112forWajeh

ShortPeriodAcceleration(Ss)in%g =27.1

1-secPeriodAcceleration(S1)in%g =7.0

PeakGroundAccelerationin%g =10.8

SiteClass =D

ImportanceFactor =1,forOccupancyCategor yIIasperASCE#07

SiteCoefficientFa =1.6asperASCE#07

SiteCoefficientFv =2.4asperASCE#07

ResponseModificationcoefficientR =12asper ASCE#07

6.0 PIPINGMATERIALS:-

SaudiAramcoEngineeringStandardSAES-L-132 shallbe followedasgeneralguidelines forMaterialSelection forPipingSystems.ProjectPipi ngMaterialspecificationsPD-X89-SP-1001andValveMaterialSpecificationPD-X89-SP-1002sha llbepreparedasperguidelinesSAES-L-105,SAES-L-108andallotherSAMSS,SAES,Piping Industrypractices(PIP),APIorASMEspecificationsspecifiedtherein.

6.1 Pipethicknesscalculationshallbebasedonlined esignconditionsasperlinedesignationtableforfollowingcases:

Forpipeclass6CS9P:Lines10"andabove.

Forpipeclass15CS9P:Lines4"andabove.

API 5L pipe used shall either be seamless or doubl e submerged arc welded withlongitudinalseam.

Softseatedvalvesusedinprocessservicesshall beoffiresafedesign.

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MiscellaneousRequirements:

6.2 NDERequirements

The general welding requirements for On-Plot Pipin g shall be as per SAES-W-011. Theminimum requirement ofNDE for various piping servi ces shall be in accordancewith clause17.5.2.1ofSAES-W-011.

6.3 Inspection&Testing

6.3.1 All itemsand theirpartsshallbesubjecte d toallmandatoryaswellassupplementary(whereverspecified)inspections,testsandchecks called-forintherespectivecodes/standards&specifications/datasheetsinlinewiththeinst ructionsofSAER-1972.

6.3.2 All inspection and steel piping shall be per formed as per Saudi Aramco InspectionRequirementsForm175-03100.

6.3.3 PressuretestingforPlantpipingshallc onformtoSAES-L-150,SAES-A-004&SAES-L-125.

6.3.4 TheminimummandatoryrequirementforPMIsh allbeasperSAES-A-206.

7.0 THERMALINSULATIONOFPIPING,EQUIPMENT&VESSE LS:-

Minimummandatory requirements for design and inst allation of insulation shall be as perSAES-N-001&ProcessIndustryPipinginsulationdes ignGuidePIPINEG1000.

Followingbasicinsulationmaterialtobeused.

Hotinsulation:MineralFiber

ColdInsulation:PolyurethaneFoam(PUF)

However, Insulation thickness on piping shall be a s per the operating temperaturefurnishedinthelinedesignationtableissuedbyp rocessEngineeringGroup.

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8.0 SURFACEPREPARATION,PAINTING/COATING&COLOUR CODING:-

ExternalandInternalcoatingmaterialselections hallbeasperclause7ofSAES-H-001&clause5ofSAES-H-002. Surfacepreparationshall beasperclause8ofSAES-H-001.

ForcolorcodingandmarkingforpipingSAES-B-067 shallbereferred.

9.0 CATHODIC-PROTECTIONFORUNDERGROUNDPIPINGSYST EM:-

Theburiedpiping(includingappurtenan ces)shallbecatholicallyprotectedasperSAES-X-600.

10.0 MISCELLANEOUS:-

10.1 Quality of water used for hydro testing shallmeet the requirements of Saudi EngineeringAramcoStandardSAES-A-007.Hydrostatictestwater smustbedisposedofinaccordancewith the requirements of SAEP-327 andSAES-A-103. A ll lines subjected to hydro testingshallbeprovidedwithhighpointhydro test venta nd lowpointhydro testdrain.Hydrotestvent and drain size shall be of . For pipe class 900 and above double isolation valveshallbeused.Gatevalveshallbeusedforhydrote stdrain/vent.HoweverallprocessdrainandventshallbeasperSaudiAramcostd.AC-03604 5.001.

10.2 Allcleaning,flushingofpipingspoolsandsystems shallbeinaccordancewithclause15&AppendixAof SAES-L-350.

Cleaning requirements in centrifugal compressors ( sales gas compressors and propanerefrigerationcompressor)shallbeasperClauseno .5.6ofSAES-K-402.

Cleaning requirements in reciprocatingcompressors (recyclegascompressor )shallbeasperClauseNo. 6.16ofSAES-K-403.

CleanlinessStandardforLube/SealOilandFluidP owerSystemsshallbeasperSAES-G-116.

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ChemicalCleaningandFlushingofLube/SealOilan dFluidPowerSystemsshallbeasperSAEP-1028

10.1 DesignandinstallationoffireproofingforPipe-Su pportsshallbeasperclause5.5ofSAES-B-006.

10.2 SafetyidentificationandSafetycolorsshallconf ormtoSAES-B-067requirement.

10.3 Followingequipmentsshallbeprovidedwithsuns hadeasperprojectrequirement.

SalesGasCompressor PropanerefrigerationCompressor RecycleGasCompressor InstrumentAirCompressor FireWaterPumps DGSet BoosterPumps

Mobilecraneshallbeavailableforanymaintenanc eworkfortheitemsserialno.atof.BoosterPumpsshall beprovidedwithEOTof3Tca pacity.

11.0 REFERENCES:-

It shall be noted that allCodes,Standards &Specifications referenced underneath shallbe invariably the latest revisionswithalladdendu ms,at the timeof `IssueofWork-Order/`Award-of-ContractfortheMidyanGasProcessingF acilities.

11.1 SaudiAramcoEngineeringStandards:

SAES-A-007 :HydrostaticTestingFluidsandLay- Upprocedures

SAES-A-112 :MeteorologicalandSeismicDesignD ata

SAES-A-202 :SaudiAramcoEngineeringDrawingPr eparation

SAES-B-005 :SpacingandDikingforAtmospheric andLow-PressureTanks

SAES-B-017 :FireWaterSystemDesign.

SAES-B-018 :FoamSystems

SAES-B-019 :Portable,MobileandSpecialFixed FirefightingEquipment

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SAES-B-054 :Access,Egress,andMaterialsHandl ingforPlantFacilities

SAES-B-055 :PlantLayout

SAES-B-067 : SafetyIdentificationand SafetyColor

SAES-B-068 :ElectricalAreaClassification

SAES-B-069 :EmergencyEyewashesandShowers

SAES-F-007 :SystemDesignCriteriaofFlares.

SAES-G-116 :CleanlinessStandardforLube/Seal OilandFluidPowerSystems

SAES-L-100 :ApplicableCodesandStandardsfor PressurePipingSystems

SAES-L-101 :RegulatedVendorListforPipes,Fi ttingsandGaskets

SAES-L-102 :RegulatedVendorListforValves

SAES-L-105 :PipingMaterialSpecification.

SAES-L-108 :SelectionofValves

SAES-L-109 :SelectionofPipeFlanges,StudBol tsandGaskets

SAES-L-110 :LimitationsonPipingJointsandCo mponents

SAES-L-120 :PipingFlexibilityAnalysis

SAES-L-125 :SafetyInstructionSheetforPiping andPipelines.

SAES-L-130 :MaterialforLowTemperatureServic e

SAES-L-131 :FractureControlofLinePipe

SAES-L-132 :MaterialSelectionforPipingSyste m

SAES-L-133 :CorrosionProtectionRequirementsf orPipelines/Piping

SAES-L-136 :PipeSelectionandRestriction

SAES-L-150 :PressureTestingofPlantandPipel ines

SAES-L-310 :DesignofPlantPiping

SAES-L-350 :ConstructionofPlantPipingSystem s

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SAES-S-050 :SprinklerandStandpipeSystemsin Buildings

SAES-S-070 :InstallationofUtilityPipingSyst ems

SAES-J-700 :ControlValves.

SAES-H-001 :CoatingSelectionandApplicationRe quirementsforIndustrialPlants andEquipments.

SAES-H-002 :InternalandExternalCoatingsforS teelPipelinesandPipings

SAES-H-101 :ApprovedProtectiveCoatingSystem.

SAES-K-402 :CentrifugalCompressors

SAES-K-403 :ReciprocatingCompressors

SAES-L-610 :NonmetallicPipinginOil yWaterServices.

SAES-W-011 :WeldingrequirementsforOn-PlotPip ing.

SAES-N-001 :BasicCriteriaIndustrialInsulation .

SAES-X-600 :CathodicProtectionforPlantFacil ities.

11.2 SaudiAramcoMaterialStandard

01-SAMSS-010 :FabricatedSteelPiping

01-SAMSS-017 :AuxiliaryPipingforMechanicalEq uipments.

11.3 SaudiAramcoEngineeringProcedures

SAEP-110:SaudiAramcoStandardDrawings

SAEP-1028:ChemicalCleaningandFlushingofLube/ SealOilandFluidPowerSystems

11.4 SaudiAramcoBestPractice

SABP-L-006:PipingStressAnalysisReview

SABP-L-010:GuidelinesforEvaluatingPipeMovemen t

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11.5 ProcessIndustryPractices

PIPPNF0003 : ProcessIndustryPract ices-ProcessUnitandOffsitesLayout Guide

PIPINEG1000 : InsulationDesignGuide

11.6 ListofInternationalCodesandStandards:

ASMESEC.II,Part-C: MaterialSpecifications: WeldingRods,Electrodes&Filler- Metals.

ASMESEC.VIII : Rulesfortheconst ructionofPressureVessels.

ASMESEC.IX : Welding&Brazingq ualifications.

ASMEB31.3 : ProcessPiping.

ASMEB16.5 : PipeFlangesandF langedFittings(NPSThruNPS24) ASMEB16.9 : FactoryMadeWroug htButtWeldedFittings

ASMEB16.10 : Face-to-FaceandEn d-to-EndDimensionofValves

ASMEB16.11 : ForgedFittings,So cketWeldedandThreaded

ASMEB16.20 : MetallicGaskets

ASMEB16.2 : Non-MetallicGaske ts

ASMEB16.25 : ButtweldingEnds

ASMEB16.47 : LargeDiameterStee lFlanges(NPS26ThruNPS60) APIRP520 : Selection,Sizin g&InstallationofPressureRelievingDevices inRefineries.

APIStd.610 : CentrifugalPumps forPetroleum,HeavyDutyChemical&Gas IndustryService.

APIStd.661 : AirCooledHeat Exchanger.

APIStd.560 : FiredHeaters.

NACEMR0175/ : Materialsforusein H2ScontainingenvironmentsinOil&Gas

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ISO15156 Production/Refi neries

11.7 ListofProjectSpecificationsandotherdocu ments:

GE-E00010 : BasisofDesign

PI-E00151 : SpecificationofPipingM aterials(Issuedfor90%Project Proposal) PD-X89-SP-1001 : PipingMaterialSpecif ication(PMS). PD-X89-SP-1002 : ValveMaterialSpecifi cation(VMS). CE-MFP-DB-4001 : Civil&Structuraldesi gnbasis.

12.0 ANNEXURES:-

(i).AnnexureI : Tableofbasic-spanfor pipes.(iii)AnnexureII : Verticalandhoriz ontalguide-spacings.

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ANNEXURE-ITABLEOFBASIC-SPANFORPIPES.

PipeType

PipeSizeNB

(Inch)

SCH/THK(In)

Pipe,Vapour&Insulation Pipe,Liquid&Insulation BarePipe,EmptyBarePipe&WaterFilled Pipe

SizeNB

(Inch)BasicSpan(L),meter BasicSpan(L),meter - -

Upto175C

176Cthru315C

316Cthru400C

Upto175C

176Cthru315C

316Cthru400C

Span(L),m

WeightKg/m

Span(L),m

WeightKg/m

Carbon-Stee

l/Alloy-Stee

lSc

hedu

le-40

,Se

ries

SCH40 3.5 3.5 2.5 3.5 3.0 2.0 4.5 1.68 4.0 2.04 1 SCH40 4.5 4.0 3.0 4.5 3.5 3.0 5.0 2.52 4.5 3.07 11 SCH40 5.0 5.0 3.5 5.0 4.5 3.5 6.0 4.08 5.0 5.4 0 12 SCH40 5.5 5.0 3.5 5.0 4.5 3.5 6.5 5.47 5..5 7.6 5 22 SCH40 6.5 6.0 3.0 6.0 5.5 4.5 7.5 8.7 6.5 11.7 9 23 SCH40 7.5 6.5 5.5 6.5 6.0 5.0 8.0 11.35 6.5 16. 15 34 SCH40 8.0 7.5 6.5 7.5 7.0 6.0 9.0 16.2 7.5 24.4 5 46 SCH40 10.0 9.5 8.5 9.0 8.0 7.5 10.5 28.3 9.0 46 .70 68 SCH40 12.0 11.0 10.0 10.0 10.0 9.0 12.0 42.84 1 0.0 75.22 810 SCH40 13.5 13.0 12.0 11.5 10.5 10.5 14.0 60.74 11.5 111.90 1012 3/8w 14.5 13.5 13.0 12.0 11.5 11.0 15.0 74.40 12.0 147.50 1214 3/8w 15.0 14.5 13.5 12.0 12.0 11.5 16.0 82.5 12.5 172.05 1416 3/8w 16.0 15.5 14.5 13.0 12.5 12.0 17.0 94.5 13.0 213.15 1618 3/8w 17.0 16.5 15.0 13.5 13.0 12.0 18.0 106.5 13.5 258.30 1820 3/8w 18.0 17.5 16.0 14.0 13.5 12.5 19.0 118.5 14.0 307.50 2024 3/8w 20.0 19.0 17.5 14.5 14.5 13.0 21.0 142.5 15.0 418.20 24

Carbon-Stee

l/Alloy-Stee

lSc

hedu

le-80

,Se

ries

SCH80 3.5 3.5 2.5 3.5 3.0 2.0 4.5 2.20 4.0 2.49 1 SCH80 4.5 4.0 3.0 4.5 3.5 3.0 5.0 3.25 4.5 3.72 11 SCH80 5.0 5.0 4.5 5.0 4.5 4.0 6.0 5.45 5.0 6.6 0 12 SCH80 6.0 5.0 4.5 5.5 5.0 4.0 6.5 7.53 6.0 9.45 22 SCH80 6.5 6.0 5.5 6.0 6.0 5.0 7.5 11.49 6.5 14 .25 23 SCH80 7.5 6.5 6.0 6.5 6.5 6.0 8.0 15.37 7.0 19. 66 34 SCH80 8.0 8.0 7.0 7.5 7.5 6.5 9.0 22.47 8.0 29. 94 46 SCH80 10.5 10.0 9.0 9.5 9.0 8.5 10.5 42.90 9.5 59.85 68 w 12.0 11.5 10.5 10.5 10.0 10.0 12.0 65.10 11 .0 94.80 810 w 13.5 13.0 12.0 11.5 11.5 10.5 14.0 82.20 1 2.0 130.69 1012 w 14.5 13.5 13.0 12.5 12.0 11.5 15.0 98.13 1 3.0 168.64 1214 w 15.0 14.5 13.5 13.0 12.5 12.0 16.0 108.15 13.5 194.40 1416 w 16.0 15.5 15.0 13.5 13.0 13.0 17.0 124.2 1 4.0 240.00 1618 w 17.5 17.0 16.0 14.5 14.0 13.5 18.0 140.25 14.5 286.64 1820 w 18.0 17.5 17.0 15.0 14.5 14.0 19.0 157.5 1 5.0 341.80 2024 w 20.0 19.0 18.5 16.0 15.0 15.0 21.0 188.25 16.0 458.44 24

Stainless-Stee

lSc

hedu

le-10

S,Se

ries

1 10S 4.0 3.5 3.0 4.0 3.0 2.5 4.5 2.08 4.0 2.70 1 1 10S 5.0 4.5 3.0 4.5 4.0 3.0 5.5 3.12 5.0 4.57 12 10S 5.0 4.5 3.5 4.5 4.0 3.0 6.0 3.94 5.5 6.33 2 2 10S 6.5 5.5 4.5 5.5 5.0 4.5 7.0 5.26 6.0 8.85 23 10S 7.0 6.0 5.0 6.0 5.5 5.0 7.5 6.45 6.0 11.91 34 10S 7.5 7.0 6.0 6.5 6.0 6.0 8.0 8.34 7.0 17.67 46 10S 9.5 9.0 8.0 8.0 7.5 7.5 10.0 13.82 8.5 34.5 4 68 10S 11.0 10.5 10.0 10.95 9.5 8.5 11.5 19.94 10. 0 55.50 810 10S 12.5 12.0 11.0 10.5 10.0 9.5 13.0 27.83 11 .0 83.40 1012 10S 14.0 13.0 12.0 11.0 11.0 10.0 14.5 36.00 1 1.5 114.60 1214 10S 14.5 14.0 13.0 11.5 11.0 11.0 15.5 41.18 1 1.5 132.60 1416 10S 16.5 14.5 14.0 12.0 11.5 11.5 16.5 47.33 1 2.5 172.20 1618 10S 16.5 15.5 14.5 12.5 12.5 11.5 17.5 53.18 1 3.0 212.10 1820 10S 17.5 16.5 15.5 13.0 13.0 12.0 18.5 68.50 1 3.0 264.50 2024 10S 19.0 18.0 17.0 14.0 13.5 12.5 20.5 94.37 1 4.0 376.8 24

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ANNEXURE-II

VERTICALANDHORIZONTALGUIDESSPACING

Pipesize(Inches)

VerticalSpacing(m)

HorizontalSpacing(m)Note-1

16 61.5

23

8 1246810

12

18

1214161820

162426&above.

GENERALNOTES:-

1) Thesespacingsmaybevariedtosuitcolumnspac ingofpipe-rack.Theabovespacingisforstraightrunsofpipe&doesnotincludethe rmo-guideswhichareusedforcontrolofthermalmovements,asdecidedbythestress-grou p.

2) Theguidespacingsfurnished/providedinthea bovetableareindicativeonly.

Piping Design Basis

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