Bidding Support

357140

Bidding Support

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Supply of 6 SCOPE: THE SCOPE ALSO INCLUDES DISMANTLING OF EXISTING OLD HOIST AND RELEVANT FESTOONS BEFORE ERECTION OF THE NEW HOIST AND ITS FESTOON SYSTEM AND DESIGN, SUPPLY, ERECTION, TESTING AND COMMISSIONING OF ELECTRICAL WIRE ROPE HOIST IN PRECIPITATION TANK 178-180 OF 06/07 AREA. PROCESS REQUIREMENT FOR HOISTS: FOR HANDLING AGITATOR GEARBOXES, COUPLINGS AND MOTORS, STRUCTURAL ITEMS LIKE PIPES AND BEAMS AND SHIFTING OF MAINTENANCE ACCESSORIES, MAINTENANCE SUPPORT EQUIPMENT WITH A FREQUENCY OF 02 LIFTS/ EVERY DAY AND AT ALMOST THE RATED LOAD FIVE TIMES IN A MONTH. CAPACITY: 12 TONNES DUTY FACTOR: CLASS-II AS PER IS 3938-1983 TYPE OF SUSPENSION: MOTOR-DRIVEN TROLLEY DESIRED HEAD ROOM: PREFERABLY 01 METRE MAXIMUM LIFT IN METRES: 40 TO 45 METERS APPROXIMATELY DESIRED TRAVEL SPEED (LOADED): 10 METRES PER MINUTE WITH INCHING DESIRED HOISTING SPEED (LOADED): 05 METRES PER MINUTE WITH INCHING METHOD OF OPERATION: A. PENDANT PUSH BOTTOM WITH CABLE LENGTH 12 TO 15 METERS APPROX AT THE WORKING FLOOR WHICH IS 10 M BELOW THE HOIST. PENDANT CONTROL STATION SHALL BE NON- METALLIC (FRP / POLYCARBONATE) WITH STAY WIRE AND SUITABLE FOR OUTDOOR APPLICATION WITH IP65/IP66 PROTECTION B. RADIO REMOTE CONTROL. SPEED CONTROL: A. HOIST: DOL (NON VFD) B. CROSS TRAVEL TROLLEY: DOL (NON VFD) TYPE OF HOOK REQUIRED: SINGLE SHANK TYPE WITH SAFETY LATCH OPERATING CURRENT: A.C. # VOLTAGE, PHASES, FREQUENCY AND NUMBER OF WIRES:440V A.C., 3 PHASES, 50HZ AND 4 NOS. WIRES EXISTING BEAM SIZE: ISMB 600X210 RADIUS OF CURVATURE: NIL TRAVEL PATH: 60 TO 65 METERS APPROXIMATELY WORK ENVIRONMENT: OUTDOOR WITH EXPOSURE TO HIGHLY CORROSIVE CAUSTIC SODA VAPOUR LIMIT SWITCH: COUNTERWEIGHT TYPE FOR UPPER LIMIT OF HOIST TRAVEL AND ROTARY TYPE FOR LOWER LIMIT. AND LEVER TYPE FOR TROLLEY TRAVEL BRAKE TYPE: HYDRAULIC THRUSTER OPERATED CONTROL PANEL: CONTROL PANEL SHALL BE WEATHER AND DUST PROOF, OUTDOOR TYPE AND CONFORMING TO IP 65/IP66 PROTECTION AND SHALL BE PLACED ON THE OPERATING FLOOR AND ALL POWER SUPPLY AND CONTROL CABLES TO THE HOIST SHALL BE FROM THE CONTROL PANEL. CABLE ENTRY TO THE PANEL SHOULD BE AT PANEL BOTTOM ONLY. SUFFICIENT SPACE BETWEEN COMPONENTS OF PANEL I.E. CONTACTOR, BMR, CONTROL TRANSFORMER, FUSE, TERMINAL BLOCKS TO BE PROVIDED, SO THAT ONE CAN WORK INSIDE PANEL EASILY. MAKE OF CONTACTOR, MCB, BMR SHALL BE SIEMENS/ABB/LANDT/ SCHNEIDER. CONTROL SUPPLY SHALL BE 230 VOLT AC. THE CONTROL PANEL SHALL BE APPLIED WITH ONE COAT OF RED OXIDE PRIMER AND TWO COATS OF SYNTHETIC ENAMEL PAINT. MAKE OF THE CONTROL PANEL SHALL BE RITTAL OR EQUIVALENT. SFU: A SWITCH FUSE UNIT (SFU) SHALL BE PROVIDED BEFORE CONTROL PANEL I.E. IN BETWEEN HOIST CONTROL PANEL AND HOIST POWER INCOMER AT MCC FOR POWER ISOLATION BESIDES CONTROL PANEL OWN POWER ISOLATION. MOTOR: HOIST AND CROSS TRAVEL MOTORS SHALL BE OF 415V+/-10%, 50HZ+/-5%, S4 DUTY, 40% CDF, INSULATION CLASS:F, 150 STARTS/HOUR AND B3 (BASE) MOUNTING TYPE WITH RAIN GUARD CANOPY. MAKE OF THE MOTORS SHALL BE OF REPUTED MAKE LIKE ABB/BBL/CGL/ SIEMENS. MOTOR SHALL CONFIRM TO IS: 12615 (ENERGY EFFICIENT TYPE). MOTOR SHALL BE DOL TYPE (NON VFD). CONTROL: PENDANT ATTACHED WITH HOIST AND RADIO REMOTE CONTROL SYSTEM SHALL BE PROVIDED. BOTH SHALL BE OPERATIONAL. A CHANGEOVER SWITCH MAY BE PROVIDED FOR OPERATION FROM BOTH MODES. EXTRA SPARE REMOTE TRANSMITTER SHALL BE PROVIDED WITH SAME FREQUENCY CONFIGURATION. CONTROL SUPPLY: 230 VOLT AC SUPPLY SHALL BE USED AS CONTROL SUPPLY. WIRING: ALL THE WIRING SHALL BE DONE BY USING STANDARD COPPER PVC INSULATED CABLES. THE MAKE SHALL BE OF FINOLEX / KEI / BCH / LANDT. TRAILING CABLE SYSTEM: SUITABLE RATING OF CABLE SHALL BE SUPPLIED WITH CABLE TROLLEY SUITABLE FOR OUTDOOR APPLICATION WITH 4PU BEARING MOUNTED WHEELS. POWER AND CONTROL CABLES: ALL CABLES TO THE HOIST SHALL BE FROM THE CONTROL PANEL ONLY AND SHALL BE TROLLEY MOUNTED ON T-TRACK WITH CHAIN SUPPORTS. ALL CABLE ENTRY TO THE PANEL AND JUNCTION BOX SHALL BE FROM BOTTOM ONLY. CABLE SHALL BE PVC INSULATED AND SHEATHED FLEXIBLE TYPE SUITABLE FOR TRAILING CABLE SYSTEM. POWER CALCULATION SHEETS BOTH FOR MOTOR AND BRAKES SHALL HAVE TO BE SUBMITTED FOR APPROVAL BEFORE MANUFACTURE. AFTER PLACEMENT OF PURCHASE ORDER, VENDOR SHALL SUBMIT SLD, CONTROL SCHEMATIC AND WIRING DIAGRAM WITH TERMINAL DETAILS AND BILL OF MATERIAL (WITH COMPONENT'S SPECIFICATION DETAILS) FOR APPROVAL. FINAL AS BUILT DRAWINGS (BOTH HARD AND SOFT COPIES) SHALL BE SUBMITTED ALONG WITH THE SUPPLY. ALL THE GEARBOX SHALL BE OF OIL FILLED TYPE. MOREOVER THE GEARBOX DESIGN SHALL BE SUCH THAT IT COULD BE DISNMANTLED EASILY WITHOUT CUTTING ANY PARTS. NO OF FALLS: 4 WIRE ROPE: SHALL CONFIRM IS 2266 (LATEST VERSION) AND BE OF NON ROTATING TYPE. GA DRAWING AND QUALITY ASSURANCE PLAN: THESE SHALL BE SUBMITTED FOR APPROVAL BEFORE STARTING THE MANUFACTURE. IT IS STRONGLY ADVISED THAT PARTY/ BIDDER TO VISIT OUR SITE AND CONFIRM ALL MEASUREMENTS LIKE TOTAL CROSS TRAVEL, MAXIMUM LIFT, BEAM SIZE, WORKING FLOOR HEIGHT AND ANY OTHER SPECIFICATIONS FOR WHICH PRECISE MEASUREMENT IS REQUIRED BEFORE SUBMISSION OF GA DRAWING. LOAD TEST AT PARTY’S SITE: PRE-DISPATCH INSPECTION SHALL BE CONDUCTED BY NALCO FOR LOAD TESTING OF THE HOISTS. SPARES: ANY SPARES REQUIRED FOR ERECTION AND COMMISSIONING TO BE SUPPLIED BY THE PARTY FREE OF COST. ALSO, SCHEMATIC DRAWING SHOWING POWER TRANSMISSION FROM MOTOR TILL THE HOIST DRUM SHALL HAVE TO BE SUBMITTED FOR APPROVAL BEFORE MANUFACTURE. NOTE: THE HOIST SHALL COMPLY WITH IS:3938-1983 ‘SPECIFICATION FOR ELECTRIC WIRE ROPE HOISTS (SECOND REVISION)’

TRN :32890242
Central Government And Public Sector / Aluminium
Damanjodi - Orissa

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