MTPS I Mill Plant Unit IV Overhauling of classifier assemblies Replacement Repairing of inner cone inner cone drum section Venturi vanes venture Collars and overhauling of spring compression assembly in Mill 4A to 4F during AOH 2024 25

Amount

Dismantling of worn out classifier assembly, inspection of deflector blade, cleaning, replacing of worn out deflector blade components renewal and assembling of new classifier assembly with its links. The overhauled classifier assembly was checked from 0 to 10 positions and ensured that the deflector blades, links move correspondingly to its position without any malfunction.

Dismantling the mill top, cutting the centre feed pipe to the required length so as to lift eroded inner cone/ inner cone drum section and brought it to 4.5 Mtr. level and assembling the same as per the direction of Engineer in charge

Charges for dismantling the inner cone from mill top and assembling the new/ reconditioned inner cone

Charges for dismantling the drum section of inner cone from mill top and replacing the new/ reconditioned one

Charges for dismantling venturi outlet assembly from mill top with the removal of venturi outlet, venturi vanes, venturi outlet conical collar assembly, coal feed pipe and devolution of scrap to stores

Charges for fixing of new venture vane and assembling the venturi outlet assembly, venturi outlet conical collar assembly with coal feed pipe and the mill top.

Charges for cutting of MS plate of various sizes to suit the eroded portions of eroded portion of inner cone drum section/ venture collar assembly and welding including stores drawl devolution etc

Charges for cutting 6mm thick MS Plate to the required size of top dia 410 mm, bottom dia 1020 mm, slanting length 400 mm.

Charges for bending the 6mm M.S. Plate to the required curvature

Charges for edge preparation of the MS plates for welding by grinding

Charges for welding the fabricated inverted cone in the center feed pipe

Charges for lifting, leading the dismantled mill top separator body and kept down in opposite position on mill repair bay and return back to Mill after completion of work

Charges for Clearing the burrs by grinding and finishing the damaged portion of the mill top separator body

Charges for Fabrication of curved shape cover plate of size 1000 x 330 mm by providing 10mm thick M.S plate.

Charges for welding and finishing the fabricated plate on mill top separator body

Charges for releasing the journal spring assembly from the journal door, dismantling the assembly for inspection , complete overhauling of journal spring assy, changing the worn out parts, cleaning the moving parts with smooth emery , polishing, re assembling the same and setting the spring compression

Cost of MS Welding electrodes

Cutting gas

Cost of M12 X 50 HT Hexagonal head bolts and nut with washer - Grade 10.9, Make: Unbrako

Cost of M20 X 90 HT Hexagonal socket had cap screw with washer- Grade 10.9, Make: Unbrako

Cost of M24 X 80 HT Hexagonal head bolts and nut with washer- Grade 10.9, Make: Unbrako

Charges for consumables and T & Ps

SATHISH ENGINEERING (BID ID -1084728)