Tenders Are Invited For Internal External Coating Of The Booster Pump Of Emirates Road Pumping Station

Quotation Are Invited For Internal External Coating Of The Booster Pump Of Emirates Road Pumping Station Internal External Coating Of The Booster Pump Of Emirates Road Pumping Station Pump Details Mfr Clyde Weir Pump Flow Rate 526 L Sec Haed 66 M Type Sdk 400 600 Rev Min 980 Rpm Please Contact Mr Noor 04 3229439 For Further Clarifications Scope Of Works Specification For Internal Coating Of Pumps Valves General These Pumps Valves Are Used In Water Booster Pumping Stations The Fluid Handled By These Pumps 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 These Pumps Are In Operation Since Commissioning Of The Station Scope Of Work Collection Transportation The Contractor Shall Collect The Pump Casing Through Suitable Pickup Crane Mounted Truck From Ems Workshop At Aweer The Contractor Pickup Shall Have Suitable And Safe Lifting Sling Belt Of Sufficient Load Capacity Loading And Unloading Of Pump Casing To Be Carried Out By Contractor Surface Preparation Before Applying Any Coating The Contra Ctor Has To Do Necessary Surface Preparation By Sand Or Grit Blasting Or Any Other Suitable Mechanical System To Remove All Rust L Oose Materials After Sand Blasting The Contractor Has To Intimate Dewa Engineer For Inspection Of The Surface Before Applying Any C Oating During Sandblasting It Is Required To Protect All Machined Surface Seat Area And All Other Critical Areas And Parts From Da Mage By Suitable Method Buildup Filling Of Erroded Pitted Surface The Supplier Has To Buildup Eroded Surface By Suitable Composite Materials Up To Original Level Before Applying Any Coating The Composite Material Shall Have The Following Properties The Curried Composite Must Be Suitable For Continuous Immersion In The Following Chemicals At 21 0C 70 0F Ferric Chloride 10 Hydrochloric Acid 10 Sulfuric Acid 5 Nitric Acid 50 Sodium 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 Adhesion Of The Composite Per Astm D1002 Shall Be Greater Than 183 Kg Cm2 2 600 Psi The Curved Composite Must Meet Or Exceed T He Following Physical Requirements Compressive Strength Astm D 695 914 Kg Cm2 13 000 Psi Tensile Strength Astm D 638 431 Kg Cm2 6 136 Psi Flexural Strength Astm D 790 620 Kg Cm2 8 800 Psi Flexural Modulus Astm D 790 6 9 X 104 Kg Cm2 9 87 X 105 Psi During The Phases Of Surface Preparation Application And Curing Environmental Conditions Will Require Careful Monitoring A Nd May Require Supplemental Controls Critical Areas Of Concern Are Relative Humidity Dew Point Surface Temperature Of The Substra Te And Air Purity Contractor Shall Carryout All The Procedures In A Controlled Environment In Accordance With The Latest Standards And Procedures Final Internal Coating After Surface Preparation And Filling Up The Eroded Surface It Is Required To A Pply The Ceramic Reinforced Composite Materials For Final Coating The Composite Coating Materials Shall Have Following Properties The Cured Composite Must Be Suitable For Continuous Immersion In The Following Chemicals At 210C 700F Ferric Chloride 10 Hydr Ochloric Acid 10 Sulfuric Acid 5 Nitric Acid 50 Sodium Hydroxide And 28 Ammonium Hydroxide The Composite Must Exceed 10 0 00 Hrs In An Astm B 117 Salt Fog Test Scored With No Signs Of Under Film Corrosion At The Score The Composite Must Pass Astm G 8 Cathodic Disbandment Test For Not Less Than 60 Days The Composite Shall Show No Blisters When Exposed To Demineralized Water In An Astm C 868 Corrocell Test At 430C 1100F For A Minimum Period Of 6 Months Adhesion Of The Composite Per Astm D 4541 Shall Be Greater Than 140 Kg Cm2 2 000 Psi The Linear Co Efficient Of Thermal Expansion Astm C 531 Shall Not Exceed 5 0 X 10 5 Cm Cm 0C 2 8 X 10 5 In In 0F Thickness Of Coating 800 1000 Microns Surface Finishing Of The Coating Shall Be Smooth Glass Sur Face Finished And Abrasion Resistant The Cured Composite Must Meet Or Exceed The Following Physical Requirements Compressive Strength Astm D 695 844 Kg Cm2 12 000 Psi Tensile Strength Astm D 638 240 Kg Cm2 3 420 Psi Flexural Strength Astm D 790 562 Kg Cm2 8 000Psi The Composite Shall Be Authorized For Usda Application For Incidental Food Contact The Composite Is Required To Have Potable Water Certification From International Local Authorities Wras Water Regulatory Advisory Soci Ety External Coating Epoxy Powder Coating In Blue Colour At Least 300 400 Micron Thick For Both Pumps And Valves All Necessary Surfaces Preparations To Be Done Before Coating Warranty The Supplier Has To Provide At Least 24 Months Of Ser Vice Warranty Against Any Damage Defects For The Coating If The Coating Is Found To Fail Within This Period The Supplier Has To Re Coat The Equipment At Free Of Charge To Dewa Method Statement The Supplier Has To Provide Method Statement Of Coating And Material Details Along With Their Offer For Technical Evaluation And Approval Inspection At Site Before Delivery Of Coated Pumps Valves The Coating Works To Be Inspected By Dewa Engineer At Supplier Workshop For Final Acceptance Contractor Shall Provide Wit H All Required Necessary Inspection Tools As Required On Site Reports Documents During Delivery The Following Docume Nts To Be Submitted 1 Material Data Sheet 2 Photo Of Casing Before And After Coating 3 Waras Certificate For Coating Material S 4 All Test Reports Qty 1Internal External Coating Of The Booster Pump Of Emirates Roadpumping Station Pump Details Mfr Clyde Weir Pump Flow Rate 526L Sec Haed 66 M Type Sdk 400 600 Rev Min 980 Rpm Standard 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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