Tenders are invited for Complete Overhauling & Coating Of Needle Valve Dn400 Pn10

Quotation Are Invited For Complete Overhauling & Coating Of Needle Valve Dn400 Pn10 For Najma Phase 4 Pumping Station. Complete Overhauling & Coating Of Needle Valve Dn400 Pn10 For Najma Phase 4 Pumping Station. Please Contact Mr. Suhail (050-4515989) For Further Clarifications. 1.0#Scope Of Work This Needle Valve Is Not Working Properly For Which Dewa Intended To Outsource The Repairing Job In Local Reputed Contractor. #Details Of The Needle Valve: ·#Make: ###Erhard ·#Nominal Diameter: #Dn400 ·#Pressure Ra Ting:#Pn10# Scope Of Works A.#Complete Dismantle Of The Valve Assembly. Removal Of The Stuck Shaft From The Cylinder. Repairing Of The Shaft On The Key Way Places And Manufacturing Of New Keys (Ss316l). B.#Replacement Of The All Defective Spares Like-O-Rings, Re Taining Rings Etc. C.#Replacement Of Defective Shaft Sleeve And Piston Pin (As Per Dismantled Sample) D.#After Repairing, Complete A Ssembly Must Be Done With Synchronization Of The Gear Box To The Shaft So As To Verify The Smooth Rotation Of The Shaft With Cylinde R. E.#Functional Test Of The Needle Valve To The Contractor Premises. F.#Operational Test Of The Needle Valve With Actuator Installe D At Dewa Pipeline. 2.0#Prior To Submission Of Quotation, The Following Shall Be Determined Carefully: A.#The Contractor Shall Vis It The Site And Make Himself Fully Familiar With The Work Scopes, Complexities, Etc., Before Submitting The Quotation. B.#Dewa Will Not Accept Any Claim For Extras Beyond The Order Rates / Prices During And After The Execution Of Work Ordered. C.# The Contractor S Hould Submit The Time Schedule /Bar Chart Indicating Each Activity. D.#On Completion Of The Work, The Inspection Checklist Of Qualit Y Procedures, Wherever Applicable Should Be Filled In And Submitted. 4.0#Take Over On Completion Of All Work Within The Scope Of T He Contract, For Acceptance Of The Maintenance Work, Contractor Shall Notify Dewa In Writing. A Certificate Of Completion Will Be Is Sued By Dewa On Final Inspection Only When The Contract Work Is Deemed To Have Been Taken Over By Dewa After Necessary Condition Mon Itoring Checks Wherever & Whenever Required. 5.0#Warranty A.#All The Work Carried Out Shall Carry A Warranty For 8000 Hours Of Ope Ration Or 1 Year Whichever Is Earlier. B.#The Guarantee Will Take Effect From The Date Of Takeover By Dewa Of The Job Carried Out By The Contractor. C.#When A Defect Is Noticed During The Period Of Warranty, The Contractor Must Rectify The Defect Within A Reasonab Le Amount Of Time Fixed By Dewa With No Claim Or Compensation. 6.0#Documents: # On Satisfactory Completion Of The Work & Handing O Ver, The Contractor Should Submit The Following To Dewa. ## A.#Inspection Report. B.#Repair/Action Report. C.#Method Statement Of The Repairing Works. D.#Photos Of Parts Of The Hydraulic Cylinder Before/After Repairing. E.#All Test Report S. Specification For Internal Coating Of Valve General These Valves Are Used In Water Booster Pumping Stations. The Fluid Handled By These Pumps/Valves Is Potable Water Of Maximum Temperature Up To 50 0C. Normally The Water Is Clean But Some Time It Is Noticed To Have Sand And Solids In Stream From Pipeline. 1# 2#Scope Of Work 3# 4#Collection & Transportation The Contractor Shall Collect The Needle Valve Through Suitable Pickup/Crane Mounted Truck From Ems Workshop At Aweer. The Contractor Pickup Shall Have Su Itable And Safe Lifting Sling/Belt Of Sufficient Load Capacity. Loading And Unloading Of The Needle Valve To Be Carried Out By Contr Actor. 4.1#Surface Preparation Before Applying Any Coating, The Contractor Has To Do Necessary Surface Preparation By Sand Or Gri T Blasting Or Any Other Suitable Mechanical System To Remove All Rust & Loose Materials. After Sand Blasting The Contractor Has To I Ntimate Dewa Engineer For Inspection Of The Surface Before Applying Any Coating. During Sandblasting It Is Required To Protect All M Achined Surface, Seat Area And All Other Critical Areas And Parts From Damage By Suitable Method. Buildup/ Filling Of Erroded/Pitte D Surface The Supplier Has To Buildup Eroded Surface By Suitable Composite Materials Up To Original Level Before Applying A Ny Coating. The Composite Material Shall Have The Following Properties: ·#The Curried Composite Must Be Suitable For Continuous Imm Ersion In The Following Chemicals At 21 0C (70 0F): Ferric Chloride, 10% Hydrochloric Acid, 10% Sulfuric Acid, 5% Nitric Acid, 50% S Odium Hydroxide And 28% Ammonium Hydroxide. ·#The Composite Shall Show No Blisters When Exposed To De-Mineralized Water In An Astm C 868 Corrosion Test At 43 0C (110 0 F) For A Minimum Period Of 6 Months. Qty: 2 Repairing & Installation Of Connecting Pin Bronze Bush Of Needle Valve Dn400 Pn10 For Najma Phase 4 Pumping Station. Please Contac T Mr. Suhail (050-4515989) For Further Clarifications. Scope Of Works: 1. Repairing & Installation Of Ss Connecting Pin Bronze Bush Washer 2. Assembly With Overhauled Needle Valve & Testing Qty: 2 Standard Terms & Conditions 1) Prices Should Be Ddp Delivery Duty Paid At Dewa Stores. 2) Quotation To Be Submitted Only In Local Currency U.A.E Dirhams 3) Dewa Standard Payment Terms Is 30 Days Credit From The Date Of Acceptance Of Material 4) 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. Tender Link : Https://Www.Dewa.Gov.Ae/Api/Rfxdownload/2332201590