Tender For Overhauling Of Mp Boiler #1/2 -

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Tender For Overhauling Of Mp Boiler #1/2 -OVERHAULING OF M.P.BOILER # 1 / 2(OVERHAULING OF VARIOUS EQUIPMENT IN M.P.BOILERS). (A) DISMANTLING OF FRONT AND REAR DOORS TO EXPOSE GRATE. REPAIR / FABRICATION OF FRONT DOORS, FITTING BACK THE FRONT AND REAR DOORS AFTER OVERHAULING. FIRE DOOR ASSEMBLY TO BE REPAIRED / REPLACED WITH NEW ONE IF REQUIRED. ALL GRATE BARS (APPROX. 800 NOS.) TO BE DISMANTLED AND TAKEN OUT, WASHERS & HALF-NUTS TO BE PRESERVED, WORN OUT PORTION OF GRATE BARS TO BE BUILT UP WITH PHILIPS 802 ELECTRODES OR EQUIVALENT AND FITTED BACK AFTER PROPER GRINDING. THE BROKEN GRATE BARS TO BE REPLACED WITH NEW GRATE BARS. CHAINS (12 NOS.) TO BE DISMANTLED AND NEW ASSEMBLIES TO BE FITTED BACK. DAMAGED SKID BARS, COMPLETE SET OF SKID RAMPS AND CAST IRON TOPS TO BE REPAIRED/ REPLACED WITH NEW ONES. REMOVAL OF FRONT AND REAR SHAFT ASSEMBLIES AFTER DISMANTLING ALL BEARING HOUSINGS AND DRIVING CHAINS. TO REPLACE THE BEARING BUSHES OF BEARING HOUSINGS (12 NOS.). IF REQUIRED BEARINGHOUSINGS TO BE REPAIRED OR REPLACED WITH NEW ONES. 12 NOS. OF CHAIN SPROCKETS AND 2 NOS. OF DRIVE SPROCKETS TO BE ASSEMBLED ON FRONT SHAFT AND 12 NOS OF IDLERS ON THE REAR SHAFT. BEARING HOUSING BASE PLATES TO BE CHECKED AND RECTIFICATION, IF REQUIRED, TO BE DONE. BEARING HOUSING (12 NOS.) WITH BUSHES AND 02 NOS. OF ROLLER BEARINGS TO BE FITTED. FRONT AND REAR SHAFT ASSEMBLIES TO BE FITTED AND ALIGNED. (B)THE FOLLOWING ITEMS TO BE REPLACED WITH NEW ONES OR OLD ONE TO BE SALVAGED (AFTER REPAIR) 1.PROTECTION BLOCKS - 20 NOS. 2.UNDER ROTOR TUYERS10 NOS. 3.ARCH PIECES - 5 NOS.. (C) COMPLETE OVERHAULING OF 6 NOS. OF FRONT RETAINER SHAFT ASSEMBLIES. REPAIR/ REPLACEMENT OF 10 NOS. OF SECONDARY AIR NOZZLES, FOR WHICH NECESSARY PLATFORM TO BE CUT AND FABRICATED WITH SUITABLE CLITS FOR REFRACTORY LINING AS PER DRAWING. COOLING AIR AND SECONDARY AIR DUCT AT THE BOILER FRONT TO BE FABRICATED AND REPLACED. (D)OVERHAULING OF 5 NOS. OF COAL FEEDERS AND 5 NOS. OF SPREADER ROTOR SSEMBLIES.SPREADER HOUSIMGS,TENSIONING DEVICES ETC. IF WORN OUT TO BE REPAIRED/REPLACED WITH NEW ONES. REPAIR OF COAL CHUTES TO BE DONE TO ARREST COAL LEAKAGES. IF REQUIRED NECESSARY PACKINGS TO BE PROVIDED. FEEDER HOUSING AND DRUMS TO BE REPAIRED/REPLACED WITH NEW ONES. (E) MECHANICAL DUST COLLECTOR SYSTEM TO BE OVERHAULED. DAMAGED SHELLS, SPINNERS SHALL BE REPLACED WITH NEW ONES, IF AVAILABLE OR ELSE WORN OUT COMPONENTS TO BE REPAIRED BY HARD FACING ELECTRODES AND FITTED BACK. (F) OVERHAULING OF COMPLETE GRIT REFIRING SYSTEM INCLUDING HOPPERS. DAMAGED SPARES TOBE REPLACED WITH NEW ONES / REPAIRED BACK AS PER THE INSTRUCTION OF SUPERVISING AUTHORITY. (G)REPAIR OF FRONT ASH HOPPERS (2 NOS.), ASH HOPPER GATES(2NOS), 4 NOS. OF RIDDLING HOPPERS, 2 NOS. OF APH HOPPERS, 2 NOS. OF ECO-CHUTE AND HOPPERS & 4 NOS. OF MDC HOPPERS WITH CHUTE,LINERPLATES WHERE EVER REQUIRED TO BE REPLACED BACK WITH SUITABLE PLATE AS PER SUPERVISING OFFICER. WHEREVER REQUIRED CLITS / ANCHORS TO BE PROVIDED FOR REFRACTORY LININGS AND HOPPER GATE ASSEMBLIES TO BE REPAIRED / REPLACED.NECESSARY INSULATION OF APH HOPPER TO BE DONE AFTER REPAIR. (H) OVERHAULING / REPLACEMENT OF 2 NOS. OF STOKER AND 2 NOS. OF FEEDER GEAR BOXES. PARTY TO OVERHAUL THE GEAR BOXES AS PRESHUTDOWN JOBS. (I)OVERHAULING INLET, DELIVERY DAMPERS AND IGVS OF SECONDARY AIR FAN AND F.D.FAN. ALL CASINGS AND DUCTINGS TO BE REPAIRED TO AN EXTENT OF 15 SQUARE METERS. INLET HOODS OF F.D FAN & ITS SUPPORTS TO BE REPAIRED. FD FAN IF NEEDED SHALL BE REPLACED WITH A NEW ROTOR BY THE PARTY. FAN BEARINGS/PLUMMER BLOCK ARE TO BE CHECKED AND IF REQUIRED THE SAME TO BE REPLACED AS PER THE INSTRUCTION OF CONTROLLING OFFICER. (J)ALL INSPECTION / EXPLOSION DOORS OF THE BOILERS TO BE REPLACED / REPAIRED IN ORDER TO ENSURE COMPLETE AIR TIGHTNESS OF THE BOILER. (K) REPAIRING OF COAL CHUTES, COAL GATES ( 2 NOS.). (L)INSULATION JOB TO AN EXTENT OF 100 M2 TO BE DONE AT DIFFERNT LOCATIONS AS PER DIRECTIVE OF THE CONTROLLING OFFICER. . (M) COAL BUNKER TO BE CLEARED OF STICKING COAL. DAMAGED CATWALK TO THE EXTENT OF 50 M2TO BE REPLACED. AREA AT BUNKER TOP LEVEL AND FEED TANK FLOOR TO BE CLEARED OF COAL /ASH DEPOSITS. ANY LEAKAGE AT COAL BUNKER HAS TO BE ARRESTED AFTER MAKING SUITABLE SCAFFOLDING. (N) BLANKING OF STEAM LINE, SAFETY V/V ETC. ARE TO BE DONE WITH SUITABLE BLANKS & GASKET REQUIRED FOR HYDRAULIC TESTING JOBS. AFTER THE JOB IS OVER ALL BLANKS ARE TO BE REMOVED IN ORDER TO RESTORE THE SYSTEM TO ORIGINAL POSITION. (O) CLEARING OF CHOCKAGES OF HEADER DRAIN LINES BY OPENING THE FLANGES AND VALVES FROM HEADRER AFTER ISOLATING VALVES TILL FLASH TANK., etc.