Coating of Booster Pump

• Country: UAE
• Summary: Coating of Booster Pump
• AET Ref No: 50762960
• Deadline: 07 Mar 2021
• Financier: Self Financed
• Purchaser Ownership: -
• Tender Value: Refer Document
• Notice Type: Tender
• Document Ref. No.: 2332100490
• Purchaser's Detail:

Purchaser : DUBAI ELECTRICITY & WATER AUTHORITY (DEWA)
P.O. Box: 564 Dubai, Tel: +971-46019999, Fax: +971-46019995
Email :customercare@dewa.gov.ae
URL :http://www.dewa.gov.ae

• Description:
• Quotation are invited for Coating of Booster Pump. INTERNAL & EXTERNAL COATING OF BOOSTER PUMP CASING OF NAJMA PH4 PUMPING STATION. PUMP DETAILS: MAKE- AVERSA, MODEL-NDS 450-400-400(H ORIZONTAL), CAPACITY-526L/SEC, HEAD-43M, RPM-1500. 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 STATIO NS. 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. SC OPE OF WORK COLLECTION & TRANSPORTATION THE CONTRACTOR SHALL COLLECT THE PUMP CASING THROUGH SUITABLE PICKUP/CRANE MOUNTED TRUCK F ROM EMS WORKSHOP AT AWEER. THE CONTRACTOR PICKUP SHALL HAVE SUITABLE AND SAFE LIFTING SLING/BELT OF SUFFICIENT LOAD CAPACITY. LOADIN G AND UNLOADING OF PUMP CASING TO BE CARRIED OUT BY CONTRACTOR. SURFACE PREPARATION BEFORE APPLYING ANY COATING, THE CONTRACTOR H AS TO DO NECESSARY SURFACE PREPARATION BY SAND OR GRIT BLASTING OR ANY OTHER SUITABLE MECHANICAL SYSTEM TO REMOVE ALL RUST & LOOSE M ATERIALS. AFTER SAND BLASTING THE CONTRACTOR HAS TO INTIMATE DEWA ENGINEER FOR INSPECTION OF THE SURFACE BEFORE APPLYING ANY COATING . DURING SANDBLASTING IT IS REQUIRED TO PROTECT ALL MACHINED SURFACE, SEAT AREA AND ALL OTHER CRITICAL AREAS AND PARTS FROM DAMAGE B Y SUITABLE METHOD. BUILDUP/ FILLING OF ERRODED/PITTED SURFACE THE SUPPLIER HAS TO BUILDUP ERODED SURFACE BY SUITABLE COMPO SITE 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% HYDROC HLORIC ACID, 10% SULFURIC ACID, 5% NITRIC ACID, 50% SODIUM HYDROXIDE AND 28% AMMONIUM HYDROXIDE. ·#THE COMPOSITE SHALL SHOW NO BLIST ERS 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. ·#ADHE SION OF THE COMPOSITE PER ASTM D1002 SHALL BE GREATER THAN 183 KG/CM2 (2,600 PSI) ·#THE CURVED COMPOSITE MUST MEET OR EXCEED THE FOL LOWING 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 105PSI). DURING THE PHASES OF SURFACE PREPARATION, APPLICATION, AND CURING, ENVIRONMENTAL CONDITIONS WILL REQUIRE CAREFUL MONITORING AND MAY REQUIRE SUPPLEMENTAL CONTROLS. CRITICAL AREAS OF CONCERN ARE RELATIVE HUMIDITY, DEW POINT, SURFACE TEMPERATURE OF THE SUBSTRATE, AN D AIR PURITY. CONTRACTOR SHALL CARRYOUT ALL THE PROCEDURES IN A CONTROLLED ENVIRONMENT IN ACCORDANCE WITH THE LATEST STANDARDS AND P ROCEDURES. FINAL INTERNAL COATING AFTER SURFACE PREPARATION AND FILLING UP THE ERODED SURFACE IT IS REQUIRED TO APPLY T HE 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% HYDROCHLOR IC ACID, 10% SULFURIC ACID, 5% NITRIC ACID, 50% SODIUM HYDROXIDE AND 28% AMMONIUM HYDROXIDE. ·#THE COMPOSITE MUST EXCEED 10,000 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 CAT HODIC 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 GR EATER 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 SURFACE F INISHED AND ABRASION RESISTANT. ·#THE CURED COMPOSITE MUST MEET OR EXCEED THE FOLLOWING PHYSICAL REQUIREMENTS: COMPRE SSIVE STRENGTH: (ASTM D 695) 844 KG/CM2 (12,000 PSI) TENSILE STRENGTH: (ASTM D 638) 240 KG/CM2 (3,420 PSI) FLEXURAL STRENGTH: (AST M D 790) 562 KG/CM2 (8,000PSI) ·#THE COMPOSITE SHALL BE AUTHORIZED FOR USDA APPLICATION FOR INCIDENTAL FOOD CONTACT. ·#THE COMPOS ITE IS REQUIRED TO HAVE POTABLE WATER CERTIFICATION FROM INTERNATIONAL/LOCAL AUTHORITIES, WRAS (WATER REGULATORY ADVISORY SOCIETY). EXTERNAL COATING EPOXY POWDER COATING IN BLUE COLOUR AT LEAST 300-400 MICRON THICK FOR BOTH PUMPS AND VALVES. ALL NECESS ARY SURFACES PREPARATIONS TO BE DONE BEFORE COATING. WARRANTY THE SUPPLIER HAS TO PROVIDE AT LEAST 24 MONTHS OF SERVICE W ARRANTY AGAINST ANY DAMAGE/ DEFECTS FOR THE COATING. IF THE COATING IS FOUND TO FAIL WITHIN THIS PERIOD THE SUPPLIER HAS TO RECOAT T HE EQUIPMENT AT FREE OF CHARGE TO DEWA. METHOD STATEMENT THE SUPPLIER HAS TO PROVIDE METHOD STATEMENT OF COATING AND MATERI AL DETAILS ALONG WITH THEIR OFFER FOR TECHNICAL EVALUATION AND APPROVAL. INSPECTION AT SITE BEFORE DELIVERY OF COATED PUMPS/VALVE S, THE COATING WORKS TO BE INSPECTED BY DEWA ENGINEER AT SUPPLIER WORKSHOP FOR FINAL ACCEPTANCE. CONTRACTOR SHALL PROVIDE WITH ALL REQUIRED NECESSARY INSPECTION TOOLS AS REQUIRED ON SITE. REPORTS & DOCUMENTS DURING DELIVERY THE FOLLOWING DOCUMENTS TO BE SUBMITTED. 1.#MATERIAL DATA SHEET. 2.#PHOTO OF CASING BEFORE AND AFTER COATING. 3.#WARAS CERTIFICATE FOR COATING MATERIALS. 4.# ALL TEST REPORTS Qty: 1 Coating of Booster pumpContact Person: Md Noor Uddin / Md.NoorUddin@dewa.gov.ae / 04-3229439 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.
• Documents:

 Tender Notice