Tenders are invited for Internal External Coating of Booster Pump Casing

Quotation are invited for Internal External Coating of Booster Pump Casing Internal External Coating O 1032101941rfx Description Internal External Coating of Booster pump casing1 ITEM 00001 INTERNAL EXTERNAL COATING OF BOOSTERPUMP CASING OF LUSAILY NEW PS CLYDE PUMP PUMP DETAILS MAKE CLYDEUNION MODEL SDJ150 250B CAPACITY 93 L S HEAD 45M RPM 1113 PLEASECONTACT MR NOOR 04 3229439 FOR FURTHERCLARIFICATIONS SCOPE OF WORKS SPECIFICATION FOR INTERNAL COATING OF PUMPS VALVESGENERAL THESE PUMPS VALVES ARE USEDIN WATER BOOSTER PUMPING STATIONS THE FLUID HANDLED BY THESE PUMPS IS POTABLE WATEROF MAXIMUM TEMPERATURE UP TO 50 0C NORMALLY THE WATER IS CLEAN BUT SOME TIMEIT IS NOTICED TO HAVE SAND AND SOLIDS IN STREAM FROMPIPELINE THESE PUMPS ARE IN OPERATION SINCECOMMISSIONING OF THE STATION SCOPE OFWORK SURFACE PREPARATION BEFORE APPLYING ANYCOATING THE CONTRACTOR HAS TO DONECESSARY SURFACE PREPARATION BY SAND ORGRIT BLASTING OR ANY OTHER SUITABLE MECHANICAL SYSTEM 1 EA TO REMOVE ALL RUST LOOSE MATERIALS AFTER SAND BLASTING THE CONTRACTOR HAS TOINTIMATE DEWA ENGINEER FOR INSPECTION OF THE SURFACEBEFORE APPLYING ANY COATING DURINGSANDBLASTING IT IS REQUIRED TO PROTECT ALLMACHINED SURFACE SEAT AREA AND ALL OTHER CRITICALAREAS AND PARTS FROM DAMAGE BY SUITABLEMETHOD BUILDUP FILLING OF ERRODED PITTEDSURFACE THE SUPPLIER HAS TO BUILDUP ERODEDSURFACE BY SUITABLE COMPOSITE MATERIALS UPTO ORIGINAL LEVEL BEFORE APPLYING ANYCOATING THE COMPOSITE MATERIAL SHALL HAVE THEFOLLOWING PROPERTIES THE CURRIEDCOMPOSITE MUST BE SUITABLE FOR CONTINUOUSIMMERSION INTHE FOLLOWING CHEMICALS AT 21 0C 70 0F FERRIC CHLORIDE 10 HYDROCHLORIC ACID 10 SULFURIC ACID 5 NITRIC ACID 50 SODIUMHYDROXIDE AND 28 AMMONIUM HYDROXIDE THECOMPOSITE SHALL SHOW NO BLISTERS WHENEXPOSED TO DE MINERALIZED WATER IN AN ASTMC 868 CORROSION TEST AT 43 0C 110 0 F FOR A MINIMUMPERIOD OF 6 MONTHS ADHESION OF THECOMPOSITE PER ASTM D1002 SHALL BE GREATERTHAN 183KG CM2 2 600 PSI THE CURVED COMPOSITEMUST MEET OR EXCEED THE FOLLOWINGPHYSICAL REQUIREMENTS COMPRESSIVESTRENGTH ASTM D 695 914 KG CM2 13 000 PSI TENSILE STRENGTH ASTM D 638 431 KG CM2 6 136 PSI FLEXURALSTRENGTH ASTM D 790 620 KG CM2 8 800 PSI FLEXURAL MODULUS ASTM D 790 6 9 X 104KG CM2 9 87 X 105PSI DURING THE PHASES OFSURFACE PREPARATION APPLICATION AND CURING ENVIRONMENTAL CONDITIONS WILL REQUIRECAREFUL MONITORING AND MAY REQUIRESUPPLEMENTAL CONTROLS CRITICAL AREAS OFCONCERN ARE RELATIVE HUMIDITY DEW POINT SURFACE TEMPERATURE OF THE SUBSTRATE AND AIRPURITY CONTRACTOR SHALL CARRYOUT ALL THEPROCEDURES IN A CONTROLLED ENVIRONMENT IN ACCORDANCEWITH THE LATEST STANDARDS AND PROCEDURES FINAL INTERNAL COATING AFTER SURFACE PREPARATION AND FILLING UP THE ERODEDSURFACE IT IS REQUIRED TO APPLY THE CERAMICREINFORCED COMPOSITE MATERIALS FOR FINALCOATING THE COMPOSITE COATING MATERIALS SHALL HAVEFOLLOWING PROPERTIES THE CUREDCOMPOSITE MUST BE SUITABLE FOR CONTINUOUSIMMERSION IN THE FOLLOWING CHEMICALS AT 210C 700F FERRICCHLORIDE 10 HYDROCHLORIC ACID 10 SULFURIC ACID 5 NITRIC ACID 50 SODIUMHYDROXIDE AND 28 AMMONIUM HYDROXIDE THECOMPOSITE MUST EXCEED 10 000 HRS IN AN ASTMB 117 SALT FOG TEST SCORED WITH NO SIGNSOF UNDER FILM CORROSION AT THE SCORE THE COMPOSITE MUST PASS ASTM G 8 CATHODICDISBANDMENT TEST FOR NOT LESS THAN 60 DAYS THE COMPOSITE SHALL SHOW NO BLISTERS WHEN EXPOSED TODEMINERALIZED WATER IN AN ASTM C 868CORROCELL TEST AT 430C 1100F FOR A MINIMUMPERIODOF 6 MONTHS ADHESION OF THE COMPOSITEPER ASTM D 4541 SHALL BE GREATER THAN 140KG CM2 2 000 PSI THE LINEAR CO EFFICIENT OF THERMAL EXPANSION ASTM C 531 SHALL NOTEXCEED 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 SHALLBE SMOOTH GLASS SURFACE FINISHED ANDABRASION RESISTANT THE CURED COMPOSITEMUST MEET OR EXCEED THE FOLLOWING PHYSICALREQUIREMENTS COMPRESSIVESTRENGTH 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 INCIDENTALFOOD CONTACT THE COMPOSITE IS REQUIREDTO HAVE POTABLE WATER CERTIFICATION FROMINTERNATIONAL LOCAL AUTHORITIES WRAS WATERREGULATORY ADVISORY SOCIETY EXTERNALCOATING EPOXY POWDER COATING IN BLUECOLOUR AT LEAST 300 400 MICRON THICK FOR BOTHPUMPS AND 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 THE COATING IS FOUND TO FAIL WITHIN THIS PERIOD THESUPPLIER HAS TO RECOAT THE EQUIPMENT ATFREE OF CHARGE TO DEWA METHODSTATEMENT THE SUPPLIER HAS TO PROVIDE METHODSTATEMENT OF COATING AND MATERIAL DETAILSALONG WITH THEIR OFFER FOR TECHNICAL EVALUATION ANDAPPROVAL INSPECTION AT SITE BEFOREDELIVERY OF COATED PUMPS VALVES THECOATING WORKS TO BE INSPECTED BY DEWAENGINEER AT SUPPLIER WORKSHOP FOR FINAL ACCEPTANCE CONTRACTOR SHALL PROVIDE WITH ALLREQUIRED NECESSARY INSPECTION TOOLS ASREQUIRED ON SITE REPORTS DOCUMENTS DURING DELIVERY THEFOLLOWING DOCUMENTS TO BE SUBMITTED 1 MATERIAL DATA SHEET 2 PHOTO OF CASINGBEFORE AND AFTER COATING 3 WARAS CERTIFICATEFOR COATING MATERIALS 4 ALL TEST REPORTS 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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