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Quotation are invited for Cleaning of Sea Water Intake Lines at Palm Jumeirah RO Plant. INSPECTION AND CLEANING OF PALM RO PLANT SEA WATER INTAKE:SYSTEM CONSISTS OF:2 NO INTAKE LINES WITH 1200 MM DIA AND 120 M LENGTH FOR EACH LINE1.0 INSPECTION REQUIREMENT1.1. THE INTAKE SYSTEM CONSISTS OF THE INTAKE HEADS (INCLUDING EXPOSEDEXTERNAL HEAD SURFACE),INT AKE PIPES WITH MANHOLES, CHLORINE DOSING PIPES, CHLORINE RINGHEADERS, CHLORINE PIPESUPPORTS, CLAMPS, SCOUR PROTECTION MATS, ANODES E TC.1.2. THE SCOPE OF WORK INCLUDES INSPECTION AND REPORTING THEOBSERVATIONS INCLUDING THE COST OFDEFECTS IF NOTIFIED. THE PURPOSE OF THE INSPECTION IS TO ASSESS THECONDITION OF INSTALLATION FROMPOINT OF BIO-GROWTH, ACCUMULATION OF SILT AND DEPOSITS, CORROSIONCONDI TION, BLOCKAGE, CHANGESIN CONDITION, HEALTHINESS OF CHLORINE DOSING SYSTEM ETC. MAINTAIN ANDSUBMIT WRITTEN,PHOTOGRAPHIC, AND VIDEO R ECORDS DURING THE INSPECTION.1.3. INTAKE HEAD TOP AND BOTTOM DECKS, ANODES AND SCREEN PORTION SHALLBE FULLY INSPECTED FORCORROSION, BIO-GROWTHS ETC. ANY ABNORMALITY NOTICED SHALL BE REPORTED TOTHE AUTHORITYWITH RECOMMENDATIONS FOR CORRECTION.1.4. INTAKE PIPES SHAL L BE INSPECTED FOR CORROSION/EROSION ON THE PIPEINSIDE SURFACES AND THE PIPEWELD JOINTS. THE CONDITION OF THE PAINTING CARRIED OUT D URING EARLIERINSPECTIONS SHALL BEREPORTED. SOME OF THE INTAKE PIPES ARE CONSTRUCTED BY CONNECTINGSEGMENTS OF REINFORCEDCEMENT PIPES OR GRP PIPES USING COUPLING, THESE PIPES SHALL BE INSPECTEDFOR ANY CHANGEIN PIPE ORIGINAL CONDITION AND DISPLACEMENT OF COUPLINGS. T HIS CAN BEASSESSED BY MEASURINGGAP BETWEEN PIPE ENDS FROM INSIDE AND VISUAL INSPECTION OF EXTERNALSURFACE.1.5. THE ACCESS TO INTAKE PIPES WILL BE FROM THE INTAKE HEAD, PUMP PITOR FROM ANY OF THEINTERMEDIATE MANHOLES. THE CONTRACTOR SHALL ARRANGE TO OPEN THE MANHOL ESFOR THIS INSPECTION.AFTER COMPLETION OF THE WORK THE MANHOLES SHALL BE REINSTATED TO ITSORIGINAL CONDITION. THECONDITION OF THE IN TAKE PIPES SHALL BE ASSESSED FROM THE POINT OF SILTACCUMULATION, EXTENT OFBIO-GROWTH, FOULING, EFFECTIVENESS OF CHLORINE DOSING, ERO SION/CORROSIONIN THE PIPES/MANHOLESETC. THE MANHOLES OF ALL THE INTAKES SHALL BE ESPECIALLY INSPECTED ASCORROSION WAS NOTICEDDURING THE LAST INSPECTION.1.6. THE CONTRACTOR SHALL GENERALLY LOOK FOR SIGN OF LEAKAGE OF CHLORINEFROM THESE PIPES DUE TOBREAKAGE, DEFECTI VE JOINTS ETC., ALONG THE ENTIRE LENGTH. ANY LEAKSNOTICED SHALL BE REPORTEDIN DETAIL, MENTIONING EXTENT OF DAMAGE AND REMEDIAL ACTIO NS. THE QUICKDISCONNECT JOINTSSHALL BE OPENED OUT TO ASSESS THE EXTENT OF INTERNAL FOULING OF CHLORINEPIPES FROM DEPOSITSOF CALCIUM/ MAGNESIUM SALTS. IF MODIFICATION IS REQUIRED FOR CORRECTINGTHE CHLORINE RISER PIPESAND SUPPORTS IN INTAKE HEADS, THESE SHALL BE REPO RTED BY THE CONTRACTOR.THE CLAMPS OFTHE PIPES SHALL BE INSPECTED, AND ABNORMALITIES SHALL BE IDENTIFIED.1.7. INSPECT SCOUR PROTECTIO N MATS AROUND THE INTAKE HEAD AND PIPESTHOROUGHLY. MONITOR ANDRECORD SAND SHIFTS.1.8. DEWA WILL CARRY OUT STOP LOGGING OF INTAKES, O NE AT A TIME. BUTCONTRACTOR#S ASSISTANCE WILL BEREQUIRED TO CLEAN THE STOP LOG GROOVES AND ENSURE THAT THE SEALING OFTHE GATES IS PROPER. THISWILL BE COVERED AS A PART OF INTAKE INSPECTION.1.10. A BRIEF PRELIMINARY REPORT SHALL BE SUBMITTED TO DEWA WITHIN 3-4DAYS FOR NECESSARY APPROVALS AND DETAILED REPORT WITHIN 1 WEEK.2.0 CLEANING REQUIREMENT2.1 THE INTAKE SYSTEM CONSISTS OF THE INTAKE HEADS (INCLUDING EXPOSEDEXTERNAL HEADSURFACE), INTAKE PIPES WITH MANHOLES, CHLORINE DOSING PIPES, CHLORINERING HEADERS,CHLORINE PIPE SUPP ORTS, CLAMPS, SCOUR PROTECTION MATS, ANODES ETC.2.2 THE SCOPE OF WORK INCLUDES CLEANING OF THE INTAKE LINES INCLUDINGRECTIFICATION O F REPORTEDDEFECTS OBSERVED DURING THE INSPECTION.2.3 INTAKE HEAD TOP AND BOTTOM DECKS, ANODES AND SCREEN PORTION SHALL BEFULLY CLEAN ED FROMCORROSION, BIO-GROWTHS ETC. Qty: 240 Cleaning of Sea Water Intake Lines at Palm Jumeirah RO Plant FOR MORE INFO PLEASE CONTACT : Mohammad.ali1@dewa.gov.ae; sampreeth.palanna@dewa.gov.ae 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. Supplier Registration: https://srm.dewa.gov.ae/irj/portal/anonymous/regis Tender Link : https://srm.dewa.gov.ae/sap/opu/odata/sap/ZSRM_RFX_REG_BID_SRV/AttachmentSet(2332600593)/$value
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