Tenders Are Invited For Overhauling Repairing Coating Of Dn500 Pn10 Butterfly Valve

Quotation Are Invited For Overhauling Repairing Coating Of Dn500 Pn10 Butterfly Valve Overhauling Repairing Coat 1032100812Rfx Description Overhauling Repairing Coating Of Dn500 Pn10 Butterfly Valve Overhauling Repairing Coating OfButterfly Valve For Mushrif Reservoir Ph2 3 Make Erhard Size Dn500 Pn10 PleaseContact Mr Fazalu 04 3229457 For FurtherClarifications As Per AttachedSpecifications 1 0 Scope Of Work TheButterfly Valve Are Not WorkIng Properly For Which Dewa Intended ToOutsource The Repairing Coating Job InLocal Reputed Contractor Details Of TheButterflY Valve Make Erhard NominalDiameter Dn500 Pressure Rating Pn10 Scope Of Works A Repairing OverhaulingOf The CompleTe Butterfly Valve B Replacement Of TheAll Defective Spares Like O Ring Shaft KeyEtc C Replacement Of Sealing Ring Bush If Indeed Requires D Trueness Check OfDrive Shaft Short Shaft If RequiresRepairing Of The Shafts E Repairing Overhauling OfGearbox And Replacement Of TheNecessary Spares If Deemed To BeReplaced F Functional Pressure Test OfButterfly Valve At ContrActor Premises G Operational Test Of TheButterfly Valve Installed At Dewa Pipeline 2 0 Prior To Submission Of Quotation TheFolLowing Shall Be Determined Carefully A The Contractor Shall Visit The Site AndMake Himself Fully Familiar With The WorkScopes COmplexities Etc Before Submitting TheQuotation B Dewa Will Not Accept AnyClaim For Extras Beyond The Order Rates Prices DurIng And After The Execution Of WorkOrdered C The Contractor Should SubmitThe Time Schedule Bar Chart IndicatingEach Activity D On Completion Of The Work TheInspection Checklist Of Quality Procedures Wherever Applicable ShouldBe Filled In And Submitted 4 0 Take Over On Completion Of All WorkWithin The Scope Of The Contract ForAcceptance Of The Maintenance Work Contractor Shall Notify Dewa In Writing A Certificate OfCompletion Will Be Issued By Dewa On FinalInspection Only When The Contract Work IsDeemeD To Have Been Taken Over By Dewa AfterNecessary Condition Monitoring ChecksWherever Whenever Required 5 0 Warranty A All TheWork Carried Out Shall Carry A WarrantyFor 8000 Hours Of Operation Or 1 YearWhichever Is Earlier B The Guarantee WillTake EffecT From The Date Of Takeover By Dewa Of TheJob Carried Out By The Contractor C When A Defect Is Noticed During ThePeriod Of WarraNty The Contractor Must Rectify The Defect Within A Reasonable Amount Of TimeFixed By Dewa With No Claim OrCompensation 6 0 DocuMents On Satisfactory Completion Of TheWork Handing Over The ContractorShould Submit The Following To Dewa A Inspection Report B Repair Action Report C MethodStatement Of The Repairing Works D Photos Of Parts Of The ValvE Before After Repairing E All TestReports Specification For InternalCoating Of Valve 1 1 Surface PreparationBefore Applying ANy Coating The Contractor Has To DoNecessary Surface Preparation By Sand OrGrit Blasting Or Any Other SuitableMechanical System To Remove All Rust Loose Materials After Sand Blasting The Contractor Has ToIntimate Dewa Engineer For Inspection OfThe SurfacE Before Applying Any Coating During Sandblasting It Is Required To Protect AllMachined Surface Seat Area And All OtherCriticalAreas And Parts From Damage By SuitableMethod Buildup Filling Of Erroded PittedSurface The Supplier Has To BuildupEroded SurfacE By Suitable Composite Materials Up ToOriginal Level Before Applying Any Coating The Composite Material Shall Have TheFollowingProperties The Curried Composite MustBe Suitable For Continuous Immersion InThe Following Chemicals At 21 0C 70 0F Ferric ChLoride 10 Hydrochloric Acid 10 SulfuricAcid 5 Nitric Acid 50 Sodium HydroxideAnd 28 Ammonium Hydroxide TheComposite SHall Show No Blisters When Exposed ToDe Mineralized Water In An Astm C 868Corrosion Test At 43 0C 110 0 F For AMinimum Period Of 6 Months Adhesion Of The Composite PerAstm D1002 Shall Be Greater Than 183 Kg Cm2 2 600 Psi The Curved Composite Must Meet Or Exceed The Following PhysicalRequirements Compressive Strength AstmD 695 914 Kg Cm2 13 000 Psi TensileStrength Astm D638 431 Kg Cm2 6 136 Psi Flexural Strength Astm D 790 620 Kg Cm2 8 800 Psi FlexuralModulus Astm D 790 6 9 X 104 Kg Cm2 9 87 X 105Psi During The Phases Of SurfacePreparation Application And Curing Environmental Conditions Will RequireCareful MOnitoring And May Require SupplementalControls Critical Areas Of Concern AreRelative Humidity Dew Point SurfaceTemperature OfThe Substrate And Air Purity ContractorShall Carryout All The Procedures In AControlled Environment In AccordanceWith The LatesT Standards And Procedures Final Internal Coating After Surface Preparation AndFilling Up The Eroded Surface It Is RequiredTo AppLy The Ceramic Reinforced CompositeMaterials For Final Coating The CompositeCoating Materials Shall Have FollowingProperties ThE Cured Composite Must Be Suitable ForContinuous Immersion In The FollowingChemicals At 210C 700F Ferric Chloride 10 HydrochloRic Acid 10 Sulfuric Acid 5 Nitric Acid 50 Sodium Hydroxide And 28 AmmoniumHydroxide The Composite Must Exceed10 000 Hrs IN An Astm B 117 Salt Fog Test Scored WithNo Signs Of Under Film Corrosion At TheScore The Composite Must Pass Astm G 8Cathodic Disbandment Test For Not Less Than 60Days The Composite Shall Show No BlistersWhen Exposed To Demineralized Water In AnAstm C 868 Corrocell Test At 430C 1100F For AMinimum Period Of 6 Months Adhesion OfThe Composite Per Astm D 4541 Shall BeGreater Than140 Kg Cm2 2 000 Psi The LinearCo Efficient Of Thermal Expansion Astm C531 Shall Not Exceed 5 0 X 10 5 Cm Cm 0C 2 8 X10 5 In In 0F Thickness Of Coating 400 500Microns Surface Finishing Of The CoatingShall Be Smooth Glass Surface FinishedAnd AbrasioN Resistant The Cured Composite MustMeet Or Exceed The Following PhysicalRequirements Compressive Strength Astm D 695 844 Kg Cm2 12 000 Psi Tensile Strength Astm D638 240 Kg Cm2 3 420 Psi Flexural Strength Astm D 790 562 Kg Cm2 8 000Psi THe Composite Shall Be Authorized For UsdaApplication For Incidental Food Contact The Composite Is Required To HavePotable Water Certification From International LocalAuthorities Wras Water RegulatoryAdvisory Society External Coating EpoxyPowder Coating In Blue Colour At Least 300 400 Micron ThickFor The Valves All Necessary SurfacesPreparations To Be Done Before Coating WarrantY The Supplier Has To Provide At Least 24Months Of Service Warranty Against AnyDamage Defects For The Coating If TheCoating IsFound To Fail Within This Period TheSupplier Has To Recoat The Equipment AtFree Of Charge To Dewa Method StatementThe Supplier HAs To Provide Method Statement Of CoatingAnd Material Details Along With Their OfferFor Technical Evaluation And Approval InspectIon At Site Before Delivery Of CoatedValves The Coating Works To Be InspectedBy Dewa Engineer At Supplier Workshop For Final AccePtance Contractor Shall Provide With AllRequired Necessary Inspection Tools AsRequired On Site Reports DocumentsDuring DelivEry The Following Documents To BeSubmitted 1 Material Data Sheet 2 PhotoOf Needle Valve Before And After Coating 3 Waras CerTificate For Coating Materials 4 All TestReports 2 Item 00002 Repairing Installation Of Seat Ring OfButterfly Valve Dn500 Pn10 Erhard PleaseContact Mr Fazalu 04 3229457 For FurtherClarIfications Scope Of Works 1 Repairing Installation Of Seat Ring Rubber 2 Assembly With Overhauled Butterfly Valve Testing 4 Ea3 Item 00003 Butterfly Valve Dn500 Pn10 Both Side ShaftSleeve Areas Line Boring SleeveReplacements Erhard Please Contact Mr Fazalu 04 322 4 Set9457 For Further Clarifications Scope OfWorks 1 Valve Both Side Shaft Sleeve AreaLine Boring Sleeve Replacement 2 Assembly With Overhauled Butterfly Valve Testing4 Item 00004 Repairing Machining Of Stem Shaft OfButterfly Valve Dn500 Pn10 Erhard PleaseContact Mr Fazalu 04 3229457 For FurtherClarifIcations Scope Of Works 1 Repairing Machining Of Stem Shaft Of Butterfly ValveBoth End 2 Assembly With OverhauledButterflyValve Testing 4 SetStandard Terms Conditions1 Prices Should Be Ddp Delivery Duty Paid At Dewa Stores 2 Quotation To Be Submitted Only In Local Currency U A E Dirhams3 Dewa Standard Payment Terms Is 30 Days Credit From The Date Of Acceptance Of Material4 No Dewa Staff Or His Or Her Relatives Up To Third Degree Should Have Ownership Or Partnership In Your Company And Your Participation In Dewa Tenders Rfqs Should Not Constitute A Conflict Or Perceived Conflict Of Interest

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