part d: technical specification of eot crane · 2018. 10. 5. · (tech spc for eot-part -d) 5.01.03...
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Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
PARTD:TECHNICALSPECIFICATIONOFEOTCRANE1.00.00GENERALINFORMATION
Thissectioncoverstheonenoof10TonnecapacityElectricOverheadTraveling(EOT)Cranes,whichwillberequiredforhandlingvariousworkshopequipmentsinnewworkshopbuildingofOPGC.EOTcraneshouldbeabletomoveinexistingandproposedworkshopcomplex.Hence,thecranebusbarneedstobeextendedtowardstheexistingworkshopsidealso.Sothelengthofthebusbarwillbeapproximately84mtr(48+36)
2.00.00CODESANDSTANDARDS The design, manufacture and testing of the crane shall conform to the latest
editionsofthefollowingcodesandstandards2.01.00 IS:807‐ CodeofPracticeforDesign,Manufacture,Erectionand
Testing(StructuralPortion)ofCranesandHoists.2.02.00IS:3177‐ Code of Practice for Design of Overhead Traveling Cranes and
GantryCranesotherthanSteelWorksCranes.2.03.00 IS:1835‐ RoundSteelWiresforRopes.2.04.00 IS:2266‐ SteelWireRopesforGeneralEngineeringPurposes.2.05.00 IS:3443‐ CraneRailSections.2.06.00 IS:15560‐PointHookwithShankupto160tones‐Specification.2.07.00 IS:5749‐ ForgedRamshornHooks.2.08.00 IS:816‐ CodeofPracticeforUseofMetalArcWeldingforGeneral
ConstructioninMildSteel.2.09.00 IS:1323‐ CodeofPracticeforOxy‐AcetyleneWeldingforStructuralWorkin
MildSteel.2.10.00 IS:9595‐ Recommendations for metal arc welding of carbon &
carbon‐manganesesteel.2.11.00 All electrical installation work shall comply with the provisions of Indian
ElectricityActandIndianElectricityRulesasamendeduptodate.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
2.12.00 ANSI‐830.2.0‐SafetycodesforoverheadandGantryCranes.2.13.00 IS3815:PointhookwithshanksforgeneralEngineeringpurpose. 2.14.00 IS823:Codeofpracticeforuseofmetalarcweldingofmildsteel.2.15.00 IS 1181: Qualifying tests formetal arcwelders (Engaged inwelding structure
otherthanpipe).2.16.00 CMNA‐CranemanufacturesassociationofAmerica. Incaseofanycontradictionbetweentheabove‐mentionedcodesandstandards
(item2.01.00thru'2.16.00above)andthistechnicalspecification,thelaterwillprevail.However,nothinginthisspecificationshallbeconstruedtorelievetheSeller of his responsibility to comply with what is mentioned against item2.11.00above.
3.00.00SCOPEOFWORK3.01.00Scopeofworkincludessupplyofthefollowing:3.01.01Theoneno.of10tonnesE.O.Tcranesashavingdutyandserviceconditionsasspecified
hereinafteralongwithallaccessories.3.01.02Runwayrails forentirerunwaylengthalongwithrailclamps,all inserts, insertplates,
anchorbolts,nuts,buffers&stops,limitswitchesetc.asrequired.3.01.03Runwayconductorsfortheentirerunwaylengthcompletewithallinsulators,supports,
supportbrackets, fixing clamps,bolts,nutsetc. as specified andas required tocomplete the installation. Power supply cabling including isolating switchcompletealongwithelectricalitems,attachmentsandaccessoriesasrequiredtofeedpowertotherunwayconductor.
3.01.04Allprotectivedevices,anti‐collisionlimitswitchesetc.asrequiredforthecrane.3.01.05Allfacilities,accessoriesandattachmentsforoperationofthecranes.3.01.06Bridgeandtrolleycurrentcollectorsandbridgecrossconductorsalongwithallwirings
etc.forthecraneasspecifiedandasrequiredtocompletethescopeofwork.3.01.07Cranecomponentsshallbeprovidedwithliftinglugs,eye‐boltsetc.atsuitablelocations
forhandlingassembling,liftingandplacingintoposition.4.00.00SPECIFICPERFORMANCEREQUIREMENTS
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
4.01.00Capacity4.01.01Thesafeworkingload(X)foreachEOTcraneshallbecomputedasX=1.25xawhere a=Singleheaviestequipmentexpectedtobehandledbythecrane.4.02.00HighestPosition4.02.01Thehighestpositionreachedbytheliftinghooksshouldbesuchthatduringoperation,
theminimumverticalcriticalclearancebetweenbottomoftheequipmentbeinghandledandthetopofanypermanentstructureorequipmentintheoperatingareashouldbeatleastonemetre.
4.03.00LowestPosition4.03.01The lifting hooks should reach up to the floor of its operating area or sump pits as
necessary.4.04.00Horizontalclearance4.04.01The lifting hooks in vertical position should reach at least up to 2.5 m from the end
stopper.
4.04.02 Eitherthemainortheauxiliaryhookinverticalpositionshouldreachatleastupto1.0mfromtherunwayrails.
4.05.00IfsafeandreliablehandlingnecessitatesmoreoperatingspacefortheE.O.T.cranes,the
sameshallbeprovided.5.00.00DESIGN&CONSTRUCTION5.01.00General5.01.01In thedesignof componentson thebasisof strength, factorof safetyshallnotbe less
than five (5) based on ultimate strength. Impact, fatigue, wear and stressconcentration factors shall be taken into account, wherever applicable.MechanismclassshallbeasindicatedintheDataSpecificationSheet.
5.01.02The crane shall be rigid in construction and all movements shall be smooth and
non‐jerky.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.01.03Drivesshallbedesignedwithadequatemargintogivebestperformanceandefficiency.Safety arrangements shall be incorporated to prevent damage to motors onaccountofmechanicaloverloadandelectrical faultsand togearing, shafts,etc.duetoover‐stressingandotherdetrimentalconditions.
5.01.04All materials shall be of tested quality and shall conform to the specificationrequirements and standardsmentioned and shall be new and first class in allrespects.
5.01.05Castings and forgings shall be of tested quality and shall conform to their respectivematerial specifications and shall be free from flaws and objectionableimperfections,machinedtrueandinaworkmanlikemanner.
5.01.06Nowoodorothercombustiblematerialshallbeusedunlessspecificallyapprovedbythe
Buyer/Consultant.5.01.07Proposals for repair or any similar operations involving plugging, welding, boring or
additionofmetal to theoriginal castingsor forgings shall be submitted to theBuyerandhisapprovalmustbeobtainedbeforeanysuchwork is carriedout.Drawingshowingdetailsand locationofsuchrepairsshallbesubmitted totheBuyer.
5.01.08Allfabricationbyweldingshallbecarriedoutbyqualifiedandcertifiedwelders.5.01.09Designshallprovide foreasymaintenanceofallparts,particularly thewheelbearings
onend‐trucks.5.01.10TemperatureEffects Where any portion of the structure is not free to expand or contract under
variationoftemperature,allowanceshallbekeptforstressresultingfromtheseconditions;theco‐efficientofexpansionforeachdegreecentigradevariationoftemperature above and below normal being taken as 0.000012 formild steel.Themaximum range of variation of temperature shall be as given in the LeadSpecification.Clause3.4ofSection3ofIS:800‐2007CodeofpracticeforuseofstructuralsteelinGeneralBuildingconstruction‐shallalsoapply.
5.01.11Maximumuseshallbemadeofshopfabricatedsub‐assemblies.5.01.12MaterialofConstruction Thematerial of constructionof themajor components of the crane shallbeas
indicatedintheDataSpecificationSheet.Manufacturersarehoweverfreetousealternativematerial,whicharesuperiorfortheintendedservice.ButinallcasestheyarerequiredtoobtainpriorconcurrenceofBuyerafterfurnishingchemicalandphysicalpropertiesof theofferedmaterial andanyother information thatmaybeaskedforbytheBuyer.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.01.13LoadIndication The crane bridge shall have permanent inscription in English on each side,
readilylegiblefromoperatingfloor,statingmanufacturer'sname,serialno.,theyearofmanufactureandthesafeworkingload.
5.02.00StructuralDesignConsideration5.02.01Minimumthicknessofmetal Forloadcarryingmembersthecomponentplates,bars,anglesandotherrolled
sectionsshallbeminimum8mmthick. For tubeshavingbothends sealed theminimum thickness shall be4.9mm(6
SWG).Forunsealedtubestheminimumthicknessshallbe8mm.Thechequeredplatesforplatformsshallbeminimum6mmthickoverplain.
5.02.02Accessibilityformaintenance All structural parts shall be designed so that they are accessible for periodic
cleaning, brushing and painting. All rivets/bolts shall also be accessible forperiodicchecking.
5.02.03Rulingdimensionsandratio a) Forcompressionmembers,theslendernessratioshallnotexceed120.In
case of other load carrying members and subsidiary members theslendernessratioshallnotexceed180.
b) Forgirders,thefollowingvaluesofmaximumspantodepthratioshallbe
governing: Plategirders : Span/depth=18 Latticegirders: Span/depth=125.02.04Connections
a) Unlessotherwisespecified,onlyrivettedorweldedjointsshallbeused.
b) Wherewelding isnotpracticable, turnedand fittedbolts shallbeused,
preferablyasperIS‐1364andIS‐1367.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
c) Minimumnumberofturnedandfittedboltsinaconnectionshallnotbelessthantwo.
d) Black bolts shall not be used inmain structures and high tensile bolts
shallnotbeusedunlessapprovedbytheBuyer.Boltsshallpreferablybenotusedintension.
e) Whereboltspass through sectionshaving tapered flanges, tapered flats
shall be welded to inside of the flanges. Tapered washers shall not beused.
f) Transversefilletweldsonloadcarryingmembersshallbeavoided.Ifsidefilletsareusedinendconnections,thelengthofeachsidefilletshouldnotbelessthantheedgedistancebetweenthefillets.
g) Buttweldsonstructuralmembersundertensilestressshallbechecked
byRadiographicexaminationasandwhendirectedbytheBuyer. h) Splices shall be designed to resist one and half times the forces and
moments to which it is subjected, but in no case it shall be less than2/3rdoftheeffectivestrengthofthematerialsplicedexceptthatsplicesinthewebsoftheplategirdersshallbedesignedforfullstrengthofthewebinshearaswellasbending.
Forsplicingtensionmembers,thenetsectionofthespliceplateshallbe
ten percent more than that of the material spliced. Splices shall beproportioned and arranged, so that the gravity axis of the splices is inlinewiththegravityaxisofthemembertoavoideccentricity.
5.02.05DeflectionsandCamber
a) Thetotalmaximumverticaldeflectionofthegirdersproducedby thedeadload,weightoftrolleyandtheratedloadshallnotexceedlimitof Span/900.
b) The girders shall be cambered by an amount equal to the maximum
deflectionduetodeadloadplusonehalftheliveloadandtrolley.5.03.00BridgeGirderandEndCarriage
5.03.01 Thecraneshallhavedoublegirder10TonnesSWL,andabovethatitshallhavedoublegirder.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.03.02 ThebridgegirdershallbeboxsectiontypeorbracedIbeamtypeasperstandarddesignofthemanufacturer.Theexteriorsurfaceshallbesmoothandasfreefromprojectionsetc.aspossibletominimisedustcollectiononit.
5.03.03double girder cranes shall be providedwith suitable truss for supporting the bridge
drivemachineryandmotor.5.03.04 The crane bridge shall be carried on end trucks of suitable design. Each end
truck shall be built up fromsteel plateswelded together to forma closedboxsectionwith opening at each end to receive thewheels.Welded to the trucksshallbesteelsectionstoformbearingsforthewheelaxlesandthedrivingshaft.End trucks shall be providedwith rail sweep and bumper. They shall also beprovidedwithsuitablejackingpadsformaintenanceofthewheelandbearings.The locationofthejackingpadsshallbesuchthat itwillnot interferewiththemaintenanceofthewheelsanditsbearing.
5.03.05 Drivingwheelsshallbeof thedouble flangeand taper tread typeandshallbe
groundtoequaldiameterinpairs.Wheelaxlesmaybeeitherofthestationaryorrotatingtypeasperstandardofthemanufacturer.Ifstationarytype,theyshallbepreventedfromturninginthetruckbymeansofakeyplatefittingintoaslotintheendoftheaxleandifrotatingtype,wheelsshallbekeyedtothem.
5.03.06 Wheremorethantwobridgewheelsareusedperendtruck,theendtruckshallbesplitintotwosections,eachcarryingonebridgeindependentofother.Twosectionsoftheendtruckshallbejoinedbysuitablejoiningdevicethatwillensureuniformwheelloading.Steelpadsshallbeweldedonthetopofendtruckswherethegirderrestsandshallbemachinedtoreceivethegirderends.
5.03.07 Trolleytravelrailendsshallbecurvedupwardstostopthetrolleysmoothlyandpreventitfromleavingtherailsincaseofovertravelatitsmaximumspeed.
5.03.08End trucks shall be equipped with spring/rubber buffers and rail sweep for bridge
travel.Therailsweepshallbesuchthatitcanpushawayanyobjectthatmayfallon the runway. The buffers shall be of substantial design and suitable forengagingthestopsattheendofrunway.
5.03.09Breathingholesshallbeprovidedincompletelyenclosedweldedboxtypegirders.Drain
holesshallbeprovidedinallplaceswherewateroroilislikelytocollect.Wherepracticable,meansofaccessshallbeprovidedforinsideinspectionofcompletelyenclosedboxgirders.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.03.10Inbridgegirderstrengthcalculations,thetrolleyrailsandchequeredplatesshallnotbe
consideredasloadcarryingmembers.5.04.00TrolleyFrame5.04.01The trolley frame shall be built up from heavy steel plates, angles and channels
adequatelybracedtoresistvertical,lateralandtorsionalstrains,weldedtoformarigidonepieceframe.Alternatively,itmaybeofcaststeelconstruction.
On bottom of trolley frame, on each side shall be a double spring bumper to
engagestopsateachendofthebridge.
5.04.02 Equalizersheavesshallbemountedonthetrolleyframeinsuchamannerthatdeflectionresultingfromtheforceonthesheavesisnotdirectlytransmittedtothehoistingmechanism.
5.04.03 Sheavesshallbesoarrangedonthetrolleythatrope‐revvingarrangementresultingtherefromwillensurealiftingoftheloadinalmostaverticallinewithminimumofswingorsidemovement.
5.05.00PlatformsandLadders
5.05.01 Safemeansofaccessshallbeprovidedtotheoperator'scabandtoeveryplacewhereanypersonengagedintheexaminationormaintenanceofthecranehastowork.Adequatehandholdsandfootholdsshallbeprovidedasnecessary.
5.05.02 Onemetrehighdoubletierhandrailandsuitabletoe‐boardsshallbeprovidedalongtheentirelengthofplatform(onthebridge),whichshallnotbelessthan750mmwide.
5.05.03Everyplatformsshallbeprovidedwithsteelchequeredplatetopandbesecurelyfenced
withonemetrehighdoubletierhandrailsandtoeboards.Platformsshallbeofsufficientwidthtoenablenormalmaintenanceworktobeundertakensafely.
5.05.04Notused,.5.05.05Access to operator's cabin from bridge girder platform shall be by staircase having
adequatewidthandpropersloping.5.06.00Operation The crane shall be operated or from a pendant control station as specified in
DataSpecificationSheet.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.06.02PendantStation a) The pendant station shall locate the push buttons for controlling the
variousmotionsofthecraneandshallbehungfromthecranetrolleytoaheightofapproximately1metreabovetheoperatingfloor.
b) Withpendantoperation,footoperatedbridgetravelbrakeandthe drumcontrollersneednotbeprovided.
5.07.00RepairCage
5.07.01 Arepaircageshallbeprovidedontheinsideoftheendcarriageforattendingthemaincurrentcollectors.Incase,thetrolleycurrentcollectorsarelocatedbelowtrolleyraillevelontheinsidewebsofthebridgegirders,guardsshallbeprovidedonthetrolleytopreventthehoistingropesfromcomingincontactwithconductorsaswellasarepaircageshallbeprovidedonthetrolleytoattendtheseconductors.5.07.02 Repaircagesshallalsobeprovidedatthecornersofthecrane,ifrequired,tofacilitateremovalandreplacementoflongtravelwheels.
5.07.03Therepaircagesshallbeadequatelysized,guardedforsafetyandcorrectlylocatedfor
theintendedservice.Suitableaccesstothecagesshallbeprovided.5.08.00LiftingHookBlockAssembly The liftinghookblockassembly shall be ramshorn typeor approvedequal for
capacitygreaterthan40Tonnesandpointhookwithshankforcapacitybelow40Tonnesandshall beof steel construction.Eachhookshallbe supportedonballorrollerthrustbearingandshallrotatefreelyonitsbearings.
Thesheavesofthehookblockshallbeencasedinanoiltightcasingpermitting
generous lubricationofwireropesandsheavesandalsopreventingaccidentaltappingofhands.
Allsharpedgesonthehooksshallbeeliminatedtopreventdamagetothesling
ropes.ThehooksshallconformtotherequirementsofIS:3177.5.09.00Gearing5.09.01Gears in the speed reducer unit for bridge drive and also all hoists and trolley drive
gearingshallbeenclosedinsubstantialhousingandshalloperateinoilbath.Theoilshallhaveadditivesofapprovedqualityandshallbeofapprovedviscosityatstandardtemperature(say60ºC).Thehousingshallbeofsufficientdesignnotto
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
permitatemperatureinexcessof90ºCfortheoilbathandshallbeadequatelysupportedandreadilyremovablewithoutdisturbingthegearassembly.
5.09.02Gears shall be of cast or forged steel and pinions shall be forged steel and shall be
machinecut.Gearandpinionteethshallbetreatedforresistancetowear.5.09.03GearsshallhavetoothformandmodulesasrecommendedinIS‐3681andtheyshallbe
adequately designed to stand shock load and vibration and shall not beexcessivelynoisyinoperation.TheratingsofgearsshallbeestablishedasperIS:4460.
5.09.04Spurandhelicalgearsonlyshallbeusedforreductiongearing.5.09.05Mountingofthegearsshallbesuchthataxialthrustonthebearingisminimum.Centre
distanceoftheconnectingshaftsshallbeascloseaspossibletothetheoreticalvalue. Shafts shall be designed to keep their deflections within permissiblelimits.
5.10.00Bearing5.10.01The type of bearings for various parts shall be as per IS‐3177 and standard of
manufacturer.5.10.02Provisionshallbemadeforservice lubricationofallbearings.Bearingenclosuresshall
be designed as far as practicable to exclude dirt and prevent leakage of oil orgrease.ArrangementforcentralizedlubricationofbearingsshallbetriedtothemaximumextentpossibleandadetailedschemeforthesameshallbefurnishedbySeller.
5.10.03Suitable drip pans shall be provided as required to collect oil and grease, whichmaydrop, from operating parts. All drip pans shall be accessible for draining andcleaning.
5.10.04Allbearingsofthegearingshallbeantifrictiontype.Angularcontactballortaperroller
bearings shallbeusedwherevernecessary.Thebearings shall correctly locatetheshaftswhileallowingforthermalexpansionoftheshafts.
Bearings shall be enclosed in suitable housingwith proper holes and plugs to
preventanyingressofdirtandtopermiteasylubricationofthebearings.5.11.00Guarding5.11.01Guardsofanapproveddesign,whichwillpushforwardoroff therail trackanyobject
placedacrossit,suchasperson'sfootorarm,shallbeattachedtoeachendoftheendcarriage.
5.11.02Protectionguardstoliveelectricalwirings/conductorsshallbeprovided.
1
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.11.03Suitableguardstorevolvingshaftsandcoupling,longtravelcrossshaftsandgears,shall
beprovided.5.11.04The sheaves of the hook block fitted with two sheaves or fewer shall be guarded to
preventtappingofahandbetweenasheaveandtherunningrope.5.11.05Effectivemeansof guiding thewire ropesover the sheaves shallbeprovidedsoas to
preventdismountingof rope from the sheave groovesevenwhena slack ropeconditionisdeveloped.
5.11.06All openings in footwalk flooring, for access to bottom chord platform, if any, and tootherinspectionplatforms,shallbeprovidedwithcovershavingsuitablelockingmeanstoavoidanyaccidentalopening.
5.11.07Allelectricalpanels,resistanceboxesshallhavesuitablerain/dusthoodsoverthemto
prevent water and building construction material falling on them, as it isapprehended that erection and commissioning of the crane might have to betakenupbeforecompletionofthebuildingroof.
5.12.00RunwayRails5.12.01Cranerunwayrailswithboltsandnutsandcompletewithshims,anchorbolts, inserts
andotherfixturesforfixingtherailstocranegirdersshallbeunderthescopeofsupplyofthepresentspecification.
5.12.02Thelengthof therailsuppliedshallbesufficient tocoverthewholeofrunway length.Gap between successive rails shall not exceed 2 mm and end rails shall beprovidedwithstopperstopreventlongitudinalshifting.
5.12.03TherailsectionshallbeasperIS:3443.5.13.00TrolleyRail5.13.01The specification includes the supply of trolley travel rails completewith fixtures for
fixingtherailstothebodyofcrane.5.13.02Thelengthoftherailsuppliedshallbeadequateformaximumpermissibletrolleytravel.
Gap between successive rails shall not exceed 2 mm and end rails shall beprovidedwithstopperstopreventlongitudinalshifting.
5.14.00RailJointsandFixing5.14.01Therailsshallbebuttjointedbyeitherthermitweldingorfusionweldingprocess.The
Sellershallgethisproposalforedge‐preparationofrails,weldingprocedureandsequence,approvedinadvancebytheBuyer/Consultant.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.14.02The schemes of securing the rails to the gantry girder/bridge structurewith clamps,bolts and nuts, their alignment etc. shall be subject to the approval of theBuyer/Consultant.
5.15.00Tolerances The limits of tolerance as specified in the Data Specification Sheet shall be
observed.5.16.00RailEndStops Railendstopsofadequatedesignshallbeprovidedonbothendsoftherunway.
Theendstoplocationandarrangementshallbesuchthattheunavailablelengthofrunway(forcraneoperation)onanyendisaminimum.
5.17.00DriveMechanism5.17.01Equaldrivingeffortshallbeappliedateachdrivewheelofbridgeandtrolleytoprevent
oneendfromtravellingfasterthantheother.5.17.02Forbridge,thetorsionaldeflectioninthecrossshaftshallbelimitedtosafevalueasper
applicablecode.5.17.03Forbridgedrive,themotorshallbelocatedatmidpositionofthespan.Iftwinmotors
are used for drive, motors shall be equidistantly located at each wheel end.Suitable interlock shall be provided to prevent single motor operation at anytime.
5.17.04Trolleydriveshallbeachievedbysinglemotorinwhichthemotorshalldriveacommon
outputshaftthroughpropergearboxandtractivepowershallbetransmittedtothe geared wheels by means of pinions mounted on both ends of the outputshaft.
5.17.05All machineries for the drive unit shall be properly aligned. Self‐aligning type gear
couplingsshallbeusedbetweenconnectionshaftstotakecareoftransverseaswellasaxialmovementwherevernecessary.
Wherevercomponentsofconsiderableamountofinertiaisdirectlymountedon
the high‐speed shaft (e.g. brake drum, couplings, etc.) they shall be balancedstaticallytominimisevibration.
5.17.06Motor ratings shall be calculated keepingmargin of at least 25% over themaximum
powerrequirement.Further,thehoistmotorsshallberatedtolift120%ofthedesign load on the hook at the rated speed. For other details the Clause no.5.19.00belowshallbereferredto.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.17.07 AlongwiththedrivemechanismsadequatebrakesshallbeprovidedasdetailedinClauseno.5.20.00below.Selectionanddesignofbrakesshallbecompleteresponsibilityofthemanufacturer.Thebrakesshallbeofaccurateratingtostopeachmotionwithinaveryshortdistanceandinasafeandsmoothmanner.
5.18.00CraneElectricals5.18.01Thecrane(s)shallbefurnishedcompletewithallelectricalequipment,accessories(like
drivemotorswithVVVFDrives, conductors, insulators, protective& operatingdevices,cables,currentcollectorsetc.)andcabling/wiringasmaybenecessaryfortheefficientandsafeoperationofthecrane.
5.18.02The crane electricals shall be designed for satisfactory operation from the available
powersupplyasgivenintheDataSpecificationSheet.5.18.03Ifpowersupplyotherthanthatspecifiedisrequired,theSellershallhavetomakehisown
arrangement by furnishing all necessary conversion, rectification andtransformationequipmentandaccessories.
5.18.04 Unlessotherwisespecified,thecraneelectricalsshallbedesignedforambientair
temperatureof50ºCrelativehumidityof100%andsiteelevationlessthan1000metresabovemeansealevel.
5.18.05Allelectricalequipment,accessoriesandwiringshallhavetropicalprotectioninvolving
specialtreatmentofinsulationandmetalagainstfungus,insectsandcorrosion.5.18.06All electrical equipment shall be laid out so that they are readily accessible for
inspectionandmaintenance.5.18.07 Thehoiststructures,motor frames&metalcomesofallelectricalequipmenton
EOTcrane/hoistshallbeeffectivelygroundedasperIndianElectricityRules.5.18.08 Ifthependentcontrolisofmetal,itshallbeearthed.5.18.09 All equipment offered shall have suitable provisions for termination and
connectionofBuyer’spowerandcontrol cable inclusiveof cable endbox,brasscompression glands terminal lugs and terminals. Incoming switch‐fuse shall beprovidedateachpanelforincomingAC/DCpowersupplies.
5.19.00DriveMotors5.19.01Allcranemotorsshallbetotallyenclosed,fancooledtype,havingclass‐Finsulationwith
temperatureriselimitedtoclass‐Boperationinallcases.5.19.02MotorenclosuresshallconformtothedegreeofprotectionIP‐55.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.19.03 Motors shall be Squirrel Cage type, designed for crane duty requirement of
frequentstarting.ReversingandpluggingmotorsofsinglegirderEOTcraneshallalsobesquirrelcagetype.AllmotorsshallbesuitableforVVVFoperation.
5.19.04 MotorsshallsuitthedutyclassS4,cyclicdurationfactor(CDF)40%andnumber
ofcyclesperhour150.Motorpullout torqueshallnotbe less than2.75 timesratedtorque.
5.19.05 Themotor shall be capable of operating satisfactorily at full load for 5minutes
withoutinjuriousheatingwith75%ratedvoltageatmotorterminals.Motorshallnotstallduringoperationatvoltagedipof70%for2sec.
5.19.06 Themotorshallbedesignedtowithstand120%ofratedspeed for twominutes
withoutanymechanicaldamage.5.19.07 Startingcurrentshallnotexceed6timesfullloadcurrent.5.19.08 The motor shall be capable of withstanding the stresses imposed if started at
110%ratedvoltage.5.19.09 Motor shall start with rated load and accelerate to full speed with 80% rated
voltageatmotorterminals.5.19.10 Thestartingtorquedevelopedbymotoratminimumpermissiblevoltageatstarti.
e. 80% of rated voltage shall be more than the starting torque requirement ofdrivenequipmentbymarginofat least10%throughouttherangeofstarting inorder toaccount forhigherstarting torquerequiredduringservicedue towearandtear.
5.19.11Motorsshallbesuitableforbothforwardandreverserotation.5.19.12 Motor subject to reverse rotation shall be designed to withstand the stresses
encounteredwhenstartingwithnon‐energisedshaftrotatingat125%ratedspeedinreversedirection.
5.19.13 Themotor shall start smoothly and rapidly andmaintain steadyoperation. The
motorcharacteristicsuchasspeed,startingtorque,accelerationtimeetc.shallbeproperly coordinated with requirement of driven equipment. Maximum torqueshallnotgenerallybebelow200%offullloadtorque.
5.19.14 Breakaway torque andpullout torque shall beproperly coordinatedwith speed
torquecharacteristicofthedrivenequipment.Thetorquespeedcharacteristicofmotor super imposed thereon, driven equipment torque speed characteristic at
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
100%, 90%, 80% and 110% of rated voltage shall be furnished to establishcapabilitytostartthemotorsuccessfullywithloadconnected.
5.19.15 Thelockedrotorwithstandtimeunderhotconditionat110%ratedvoltageshall
bemore thanmotor starting time by at least 3.0 seconds formotors up to 20secondsstartingtime.
5.19.16 Starting timementionedabove isatminimumpermissiblevoltageof80%rated
voltage.5.19.17 Hotthermalwithstandcurveshallhaveamarginoratleast10%overthefullload
currentofthemotortopermitrelaysettingutilisingmotorratedcapacity.5.19.18 Eachmotorrated30KWandaboveshallbeprovidedwithspaceheater,sizedto
maintainmotorinternaltemperatureabovedewpointwhenthemotorisidle.5.20.00Brakes Selection and design of brakes shall be such as to meet the following
requirements:5.20.01ServiceBrake a) Double‐shoetypeservicebrakesshallbeprovidedforeachmotionofthe
craneanditshoists.Theservicebrakesshallapplyautomaticallywhenpowersupplytothedrivemotoriscut‐offorfails.
b) Servicebrakesformainhoistmotionshallbeelectro‐hydraulicthrustortype,foralldoublegirdercraneseithercabinorpendantoperatedandelectromagneticdisc.typeforsinglegirdercrane;adequatelysizedtoarrestmotionandholdatrestanyloaduptoandincludingtestloadatanypositionofthelift.
5.21.00MainDisconnectSwitch5.21.01Maindisconnectswitchshallbemetal‐clad,3‐pole, load‐breaktypeinIP‐54enclosure,
completewithcompressionbrassglandsandlugs.5.21.02Theswitchshallbeprovidedwith"PowerOn"redindicationlamp(LEDtype)andshall
besuitablylocatedsothatitcanbemanuallyoperatedfromtheoperatingfloorlevel.
5.21.03Powerleadsshallrunfromthemaindisconnectswitchtotherunwayconductors.5.22.00RunwayConductors(DownShopLeads)
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.22.01Therunwayconductorsshallbefour(4)innumberforthreephasesupplyandground.5.22.02TherunwayconductorsshallbeofM.S.anglesections,liberallysizedsoasnottoexceed
current density of 0.42 Amps/sq.mm. Alternatively, shrouded bus bar withcoppertypeDSLmaybeused.
5.22.03Sufficient allowance (minimum 20%) for wear and tear shall be provided over the
calculatedconductorsize.
5.22.04 Therunwayconductorsshallbesupportedonbracketsandinsulatorsfromthecranegirderwithsufficientspacinginbetweentheconductors.
5.22.05Thecollectorsystemperconductorshallbetop‐runningtypehavingspringloadedcast
iron/carbonmetallicshoestomaintainadequatecontactpressure.5.23.00Cross‐ConductorsonBridge5.23.01Crossconductorsonbridgeshallbeflexibletrailingcablesystemmountedonretracting
supports(festoontype).5.23.02Alternatively cross conductors of M.S. angles with shoe collectors, similar to the
arrangementofrunwayconductorsmaybeoffered.5.24.00PowerDistributionEquipment5.24.01From the main collector shoes, wiring shall be extended to two (2) nos., 3‐pole,
load‐break,safetydisconnectswitches‐oneatthebridgenearthecollectorandtheotherinoperator'scabinwithineasyreach.
5.24.02The safety switches shall be capable of cutting‐off the supply to all power driven and
associatedequipmentofthecranebutnottheauxiliaryloadssuchasfans,lightsetc.
5.24.03 From the safety disconnect switches, wiring shall be extended to a protective
panel,containingthefollowingasaminimum: a) Onetriplepoleincomingsupplydisconnectswitch. b) OnetriplepolemainmagneticcontactorwithHRCfusebackup,ON‐OFF
pushbuttonsandRED‐GREENindicationlamps(LEDtype).
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
c) Motorfeeders,eachcomprisingoftriplepolefuseswitchunitwiththermaloverload(handreset)relaysforshortcircuitandoverloadprotectioninallthreephasesofthemotor.
d) Outgoing feederswithdouble‐pole switch fuseunits forauxiliary loads
suchascontrolsupply,lights,fans,etc.withatleastonesparefeeder.5.25.00VoltageDrop5.25.01All conductors and cables/wires shall be so sized that the voltage drop measured
betweenthemaindisconnectswitchandmotorterminalsshallnotexceed3%ofratedvoltage.
5.25.02 Thevoltagedropshallbecomputedusingthetotalrunningcurrentofallcranemotorsthatcanoperatesimultaneouslyandwithratedcraneload.
5.26.00SafetyInterlocks5.26.01DisconnectSwitch a) The operating handle of the main/ safety disconnect switch shall be
mechanically interlockedwith enclosure cover such that the same cannotbeopenedunlesstheswitchisinOFFposition.
b) Main/ safety disconnect switch shall have provision of pad‐locking in
OFFposition.5.26.02MainContactors a) The main contactor shall be electrically interlocked so that it cannot
closeunlessallthemotoroverloadrelaysareRESETandallcontrollersareinOFFposition.
b) Themaincontactorshallbealsoopenedbymeansofemergencypushbuttonsandhoistlimitswitches.
5.27.00EmergencySwitch MushroomtypeemergencySTOPpushbuttonstoopenthemaincontactorshall
befurnished‐atleastoneinoperator'scabinandtwoonbridgeplatformwithineasyreach.
5.28.00CraneControls
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
TheVVVFDrivecontrolshallbeusedforcontrolofeachmotion.TheVVVFdriveshallbeprovidedwithsteplessspeedcontrolfrom0to100%.TheVVVFDriveshallbeequippedatleastwith1024Pulseincard,droopcontrolforsynchronizationandcranesoftware.TheratingofVVVFshallbedecidedconsidering250%offullloadcurrentofrespectivedrivemotor. TheVVVFdriveshallbesuitableforcontinuousoperation.Forlongtravel,motorshallbegroupedintwogroupsandoneVVVFdriveforeachgroupshallbeconsidered.
5.29.00Controllers5.29.01 Mastercontrollersforallmotionsshallbesoarrangedintheoperator's
cabinastoprovidemaximumconvenienceandviewoftheoperator.5.29.02AllcontrollersshallbeprovidedwithspringreturntoOFFpositionfeature.WheninOFF
position,thecontrollershalldisconnectpowersupplytotherespectivemotor.5.29.03 Eachcontrollershallbearsuitablyengravedinscriptionofmotions
controlledinEnglishandofdirectionofmotionsbyarrows.5.30.00 LimitSwitches5.30.01 ThelimitswitchesshallbetotallyenclosedtypeIP‐55withproperly
designedactuatorsandshallbereadilyaccessibleforadjustmentandrepair.
5.30.02Eachhoistshallbefurnishedwithtwo(2)limitswitches:
a) Ascrewtypelimitswitchwithself‐resettingfeatures,whichwillactincaseofover‐hoisting.
b) Agravityoperatedhand‐resettypelimitswitchasaback‐upprotection
againstover‐hoisting.5.30.03Track type limit switchesshallbeprovidedon thebridgeand trolley topreventover‐
travelingineitherdirection.5.31.00Panels
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.31.01 ProtectiveandcontrolpanelsshallhaveIP‐54gasketedenclosure,fabricatedfromsheetsteel,minimum2mmthick,suitablyreinforcedtoprovidestructuralrigidity.
5.31.02Thepanelsshallbefrontconnectedtypewithfronthingeddoorforaccesstowiringand
terminals.Engravednameplatesshallbefurnishedforallpanelsandalsofortheequipmentanddevicemountedthereon.
5.31.03Allpanelsshallbefactorywiredandterminatedonsuitableterminalblocksforexternal
cableconnection.Allinternalwiringshallbeidentifiedwithnumberingferrulesat both ends as per relevantwiring diagram. Terminal blocks shall have 20%spareterminals.
5.31.04Control wiring shall be carried out with 1100 Volt grade flexible, heat resistant,
insulated switchboard wires with minimum 2.5 sq.mm stranded copperconductor.
5.31.05 Incomingswitch‐fuseshallbeprovidedateachpanelforincomingAC/DCpower
supplies.5.31.06 EachpanelshallhaveinternalilluminationwithLEDlampandthermostat
controlledspaceheater,suitableforoperationon240V1‐ph50Hzsupply.LampsandheatercircuitsshallhaveindividualON‐OFFswitches.
5.32.00Switch5.32.01 Allswitchesshallbehandoperated,airbreak,heavyduty,quick
make‐quickbreaktype,capableofsafelybreakingthefullloadcurrentofconnectedmotor/feeder.
5.32.02 Incomingsupplydisconnectswitchshallbeinterlockedwithpaneldoor
sothatthesamecannotbeopenedunlesstheswitchisinOFFposition.Devicetodefeatthisinterlockshallalsobeincluded.
5.33.00Fuse5.33.01AllfusesshallbeofHRCcartridgetype,mountedonplug‐infusebaseandprovidedwith
visibleoperationindicator.
5.33.02 Allaccessiblelivepartsshallbeadequatelyshroudedsoastoeliminatethedangerofaccidentalcontactswithlivepartswhilechangingthefuse.
5.34.00Contactors
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.34.01 Contactorshallbesuitableforcraneduty,withcurrentratingnotlessthanconnectedmotorfullloadcurrent.Allreversingcontactorsshallbemechanicallyandelectricallyinterlocked.
5.34.02Contactors shallhave facility for easy inspectionand replacementofparts.Arc chutes
shallbeprovidedwherenecessary.5.34.03Each contactor shall be provided with three positive acting, ambient temperature
compensated,thermaloverloadrelayswithadjustablesettingstosuitthemotorcurrent.
5.34.04 Therelaysshallbehandresettype,suitableforresettingwith
compartmentdoorclosed.5.35.00PushButtonandLamp5.35.01 Pushbuttonshallbespringreturntype,with2NO+2NCcontacts,rated
10A240VA.C.5.35.02 IndicatinglampsshallbeLEDtypewithseriesresistor.Lampsandlens
shallbereplaceablefromfront.5.36.00Illumination5.36.01 Cranelightingandspaceheatingsystemsshallbedesignedfor240V1ph
50Hzsupplyandreceptaclesystem24V1ph50Hzsupply.Suitabledrytypetransformersshallbefurnishedforthepurpose,completewithisolationfacilityandprimary/secondaryfuses.
5.36.02Thelightingdistributionboardshallbelocatedintheoperator'scabin.Branchcircuits
forlightingandreceptaclesshallbeindividuallyprotectedbyswitchfuseunits.5.36.0340WLEDfixturesshallbeusedforlightingoperator'scabinandbridgeplatform.Four
(4)250Whigh‐bay sodiumvapour fixtures shall beprovidedbelowbridge forilluminationoftheworkingzones.
5.36.04All lighting fixtures shallbemountedwithanti‐vibrationmountingandshallbeeasily
accessibleformaintenance.5.36.0524V‐5A‐3pinindustrialsocketoutletsshallbeprovided–two(2)inoperator'scabin
andminimumfour(4)onthebridgealongthewalkway.5.36.06One(1)portable40Whandlampwithplugshallbefurnishedwithadequate lengthof
flexiblecableforinspectionofcranecomponents.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
5.36.07Operator'scabinshallbeprovidedwithone(1)electricfan.
5.36.08 One(1)heavy‐dutytypeindustrialsirenshallbeprovidedwitheachcrane.Thesirenshallbeoperatedfromfoot‐switchintheoperator’scabin.
5.36.09Conduitwiringsystemshallbeusedforlightingcircuits.5.37.00Wiring5.37.01All power, control and auxiliary circuitwiring shall be furnished and installed as per
best installationpractice.Thedesignshallbe suchas tomaximise shopwiringandminimisefieldwiring.
5.37.02Allwiringshallbedonewith1100VgradePVCinsulatedwireinconduitsorby1100V
gradePVCcableswithextrudedinnersheath.5.37.03 Conductorsshallbestrandedaluminiumforpowerandstrandedcopper
forcontrol.Minimumconductorsizeshallbenotlessthan2.5sq.mmcopperorequivalent.Forselectingthecablerating,motorduty,ambienttemperature,grouping,positionofcables,voltagedropetc.shallbeconsidered.
5.37.04Conduits shall be heavy gauge, rigid steel, hot‐dip galvanised, cut square, reamed,
threadedandscrewedtightatall joints.Conduitentrytopullboxorenclosureshall havedouble locknuts and insulatingbushing.No running thread shall beused.
5.37.05Solderlessconnectorsshallbeusedforallconnections.Nosplicesshallbepermittedin
wireorcable.Notapsorconnectionsshallbemadeinfittingsorjunctionboxes.5.37.06Allwiresandcablesshallbeidentifiedwithpermanentmarkersatterminationsasper
approvedwiringdiagram.5.38.00Grounding5.38.01Thecrane rails, structures,motor frames,metalenclosuresofallelectricalequipment,
conduitandtraysystemshallbeeffectivelygroundedinaccordancewithIndianElectricityRules.
5.38.02Bondingofstructuresandcranerailsshallbeprovidedasrequiredtoensureelectrical
continuity.5.38.03Thecranegroundingsystemshallbeconnectedtostationgroundmat.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
6.00.00INSPECTIONANDTESTING6.01.00 The Seller shall submit his Shop and Field Quality Plan for OPGC review and
approvalasperstipulationsofVolumeIIAofthisspecification.TheQualityPlanshall indicateall the tests tobe carriedout in linewith the relevant codes.Allforgings and castings shall be subjected to ultrasonic examination. DPT/MPIshallbecarriedoutwhere‐evernecessary.
6.02.00Testsatshop6.02.01The cranes shall be subject to no load, full load and overload tests as per IS‐3177.
Otherwise the crane shall be subject to 'no‐load' test after complete assemblyandwiring.
6.02.02ThecraneshallbesubjecttodeflectiontestasperIS:3177.6.02.03If the hoisting drum offered is of welded construction, the seams shall be fully
radiographed.6.02.04Theinspectionandtestingofbuttweldedjointsshallbeperformedinaccordancewith
theprovisionsoftherelevantIndianStandardsorotherequivalents.Butweldedjointssubjecttodirecttensionshallbe100%radiographed.All'T'jointsshallbecoveredwithspotradiography.Shouldanyofthespotsbefounddefectivethenradiographytobeextendedto100%area.
6.02.05Allelectricalequipmentandcomponentsthereofshallbesubjecttoroutinetestsasper
relevantIndianStandards.Typetestcertificateonanyelectricalequipmentshallbe submitted if desired by the Buyer. Otherwise, type tests shall have to beperformedontheequipmenttoprovethedesign.
6.02.06Reports of all shop tests shall be submitted to the Buyer/Consulting Consultant for
review.6.03.00Testsatsite6.03.01 Afterassemblyanderectionatsite,thecraneshallbesubjecttothe
followingtests: a) AlltestsasperIS‐3177,includinginsulationtestandtestsforoperation. b) DeflectiontestsasperIS‐3177 c) Overloadtestsat125%ofworkingloadasperIS‐3177
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
6.03.02 Deadloadsasrequiredforconductingthetestsatsiteshallhavetobe
arrangedbytheSellerathisowncost.
7.00.00DRAWINGS,DATAANDINFORMATION7.01.00 The following drawings and data shall be submitted for review of Buyer/
ConsultantbytheSeller.7.01.01Drawings showing general arrangement, clearance requirement, assembly, cross
sectionaldataandmaterialsofconstructionfor: a) E.O.T.CraneUnit b) BridgeAssemblyandComponents c) BridgeEndTrucksandWheelAssembly d) Trolley e) TrolleyWheelAssembly f) Drive and Transmission Unit for Bridge Travel, Trolley Travel, Main
HoistandAuxiliaryHoist. g) SuspensionUnitforMainHookBlockandAuxiliaryHookBlock. h) MainHookBlock i) AuxiliaryHookBlock7.01.02Drawing showing layout of controllers and protective panels inside the operator’s
cabin/pendantstation.7.01.03 Leafletsonproprietaryitemssuchasmotors,brakes,gearbox,couplingetc.7.01.04Designcalculationofthefollowing: Bridge girder, Rope drum, Machinery shafts, Gear box, Motor rating, Brake
capacity,Bearinglife,Wheelloadingetc.7.01.05Drawings,characteristicscurvesandotherdataforeachdrivemotor.7.01.06Materialtestcertificatesforallitemsincludinghooksandwirerope.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
7.01.07Reportsonvarioustestsatshopandatsite.7.01.08Controlandprotectionschemealongwithcranewiringdrawingaswellasaschematic
drawing of control wiring indicating ratings and specifications for motors,contactors,resistors,fuses,etc.
7.01.09Asbuiltdrawing/electricalcontrolschematic.7.02.00InstructionManual7.02.01 TheInstructionmanualsshallpresentthefollowingbasiccategoriesof
informationinacomprehensivemannerpreparedforusebyoperatingand/ormaintenancepersonnel:
i) Instructionforerection ii) Instruction for pre‐commissioning check up, operation, abnormal
conditions,maintenance,repairandprotection. iii) Adetailwriteuponthecranecontrolsystemandalsoontheinterlocks
provided. iv) Recommendedinspectionpointsandperiodsofinspection. v) Scheduleofpreventivemaintenance. vi) Replaceablepart'slistwithorderinginformation.
vii) Recommendationfortypeoflubricants,lubricatingpoints,frequencyoflubricationandlubricantchangingschedule.
viii)GA&Cross‐sectionaldrawingwithBOM
viii) Manualforallboughtoutitems
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
DATASPECIFICATIONSHEET
GENERALINFORMATION
Location :AsperAnnexureI.Workingcondition :Indoor
GUARANTEEDPERFORMANCEREQUIRED
Capacity:(Safeworkingload) a) MainHoist(T) :10Tonnes. b) Aux.Hoist(T) :5Tonnes.RatedSpeed : (foranyloadfromzerotoSWL) Mainhoist :3m/min. Aux.hoist :5m/min. Trolleytravel :15m/min. Bridgetravel :25m/min. Creepspeed :0.3m/min Rangeofspeedcontrol formainandauxiliary hoisteachmotions 0to100%of (foranyloadfrom corresponding zerotoSWL) ratedspeed.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
Note:Safeworkingloadshallbe125%ofweightoftheheaviestequipmenttobelifted.
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
SCOPEOFSUPPLY
Cranestructurescomplete : YesAlldrivemotorsanddrivinggears : YesRunningrailsincludingallclamps,anchors,bolts,nuts,sheams,inserts,endstopsandotherfixtures : YesOperator'sCabin : NoPendantStation: YesPortablefireextinguisher/CO2bottleinoperator'scabin : NotapplicableRunwayconductors(DSL)andpowercollectorscompletewithallsupports,insulators,brackets,fixturesetc. : YesCompleteelectricalworkincludingmaindisconnectswitch,allcontrolsandinterlocks,withnecessarywiring,grounding,protectivepanelsetc. : YesLowerlimitswitchesforhoists : YesIlluminationofcrane . : YesFaninoperator'scabin : NotApplicableLiftinglugs,eyeboltsetc.forhandlingofcraneparts : YesErectionandcommissioningservice : Yes,SupervisionbyCraneManufacturerAllequipment,accessoriesandconsumablesrequiredforerection,testingandcommissioning : Yes
1
1
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
Finalpainting : YesFirstchargeofoil,lubricants,greaseetc. : Yes
DESIGNANDCONSTRUCTION
DutyClass : Mechanismclass ‐ M5asperIS‐3177andIS‐807 ElectricalServiceclass ‐ 4asperIS‐3177Operation : Pendantstationforallcranes No.ofTrolleys : OneSpanbetweenrunwayrailcentres : } }Netrunwaylength : } }Elevationoftopofrunwayrails : }TobedecidedbytheSeller. }Elevationofbottomofbuilding }roofstructures : }Mainhookpositions‐a) Elevation ‐ Highest : } ‐ Lowest : } }b) Minimumapproachfromrunway } railcentrelines : } }c) Minimumendapproachfrom } runwayrailstops : } }Auxiliaryhookpositions‐ }TobedecidedbytheSellerasper }guidelinesofthespecification.a) Elevation ‐ Highest : } ‐ Lowest : } }b) Min.approachfromrunwayrail } centrelines : }
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
}c) Min.approachfromrunway } railstops : } }Clearspacebetweenrunwayrail }centrelineandnearestsideobstruction/wall }Runwayconductors‐a) Material : Asspecifiedearlierb) Maximumallowablecurrentdensity : Sellertoindicate.
DESIGNANDCONSTRUCTION
EndTrucka) I‐Sectionacceptable : Nob) Singleflangedwheelsacceptable : NoPermissibletolerance‐a) Differenceinlevelsofcranerailtop measuredbetweentwoadjacentcolumns : 2.0mmb) Cranerailgauge : +_ 3.0mmc) Relativeshiftofendsofadjacentrailsinplan andelevationafterwelding : 1.0mmd) Deviationofcranerailaxisfromcentreline ofwebofsupportinggirder : +_ 3.0mmScheduleofBrakesHoldingtorqueforcontrolbrakeshallbe150%ofratedtorqueandthatofservicebrakeshallbe150%Thescheduleofbrakesshallbeasunder:
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
Sl.No. Service Type&No.1. MainHoist Two(2)nos.Electrohydraulicthrustertypebrake.2. AuxiliaryHoist Two(2)nos.Electrohydraulicthrustertypebrake.3. CrossTraverse Two(2)nos.Electrohydraulicthrustertypebrake..4. LongTraverse Two(2)nos.Electrohydraulicthrustertypebrake.. Two(2)nos.Hydraulicthruster(footoperated)The aforesaid brake schedule is applicable for double girder either cabin or pendent operatedcrane. Foot operated hydraulic thruster type brake need not be provided for pendant stationoperated cranes. For single girder cranes and single girder under slung cranes, one (1)electromagneticdiscbrakeforeachmotionshallbeprovided.
MATERIALOFCONSTRUCTION
Bridgegirder : IS‐2062Gr.B.Otherstructuralmembers : IS‐2062Gr.B.Liftinghooks : Steel (Main hook as per IS‐5749 and
Aux.hookasperIS‐15560).Sheaves : ForgedSteel.
Drum : Seamless pipe to ASTM A106 or
fabricatedrolledsectiontoIS‐2062.Gr.B
Wireropes : AsperIS‐2266.(UshaMartinMake)Gear : CastorForgedSteel(EN‐9).Pinion : Castalloysteel(EN‐24).
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
FinalInspectionAfterAssemblyatShopandSite
FinalAssembly : Visual,DimensionalandAlignmentCheckPerformanceTest : a)NoLoadTest b)SafeWorkingLoadTest(SWL) c)OverloadTest(125%ofSWL) d)Idleruntestforwheelsforlongtravelmotion e)Specificspeedforallmotion f)DeflectionTest g)ElectricalFailSafeTest h)OthertestsasperIS:3177Identification : Marking&StampingPainting : Surface Preparation, Final Finish andPaintDFT
VerificationofDocuments : AsperapprovedMQP&FQPNote:Contractor shall submitMQP&FQPofCrane forOPGC reviewand
approval.
Listofvendors
Crane : AnupamIndustries,Electromech,Greaves,Century
Crane, REWA, WMI
Motors : Marathon,BBL,CGL,Siemens,VVVFDrive : Siemens, Schneider, ABB, Alstom,
YokogawaWireRopes : UshaMartin
Odisha Power Generation Corporation Ltd.
Technical Specification for WorkshopPackage
IB TPS – 2 X 660 MW Units 3 & 4, Jharsuguda, Odisha
MANTRA UDYOG
(TECH SPC FOR EOT-PART -D)
GearedBrakeMotor : Siemens (Flender), SEW, Bongfiglioli,
NORDBrakes : SOC, Electromag, Kakku, BCH,Magco
ControlBearing :SKF,FAG,TIMKEN,TATA,NBCContactors/MCCB/MCB/FUSES :Siemens,L&T,Telemechanic,ABB/OverloadRelays/IsolatorsPushButton :Siemens,L&T,Telemechanic,Cable :KEI,Finnolex,Polycab,UniversalLimitSwitch :Siemens,BCH,EPCC(KAKKU)TimeRelay : SiemensNote: Any deviation from the above list shall be subjected to OPGC
approval.