NCTPS I SE MI circle Mill Plant Maintenance Division Annual Maintenance work for the year 25 26 Specification No 274 24 25

Amount

Removal of foreign materials/coal block and stone out of the mill upper bowl and under bowl/mill feeder. Including Consumable and hire charges for T&P's.

Charges for patch welding to attend punctured in coal pipe/ bend/ mill outlet fuel inlet elbows, transition piece of coal pipe spl bends, MRHS, reject discharge pipe lines by suitably cutting & welding. Including Consumable and hire charges for T&P's.

Charges for poking the chocked coal through poking holes (4 Nos.) in the bunker at 20 mtr EL and hammering at the bunker down spout pipe. Including Consumable and hire charges for T&P's.

Cleaning the chocked coal in clean out conveyor area manually, dismantling the chains, drive sprocket, driven sprocket, inspection of bearings, cleaning and reassembling / changing of bearings, assembling all the dismantled components back in to original position, conducting trial run, checking for normal operation and commissioning. Including Consumables such as bearings, fastners, etc. and hire charges for T&P's.

Charges for dismantling the cleanout conveyor gear box, worn out bearings, spares for gear box & assembling with new bearing, new spares & reconditioning of shaft & complete assembling of gearbox. Including Consumables such as bearings, fastners, etc. and hire charges for T&P's.

Charges for inspection and defect rectification works on Stock gravimetric feeder after dismantling all the idle roller pulley, bearings, checking of clean out conveyor and changing of bearings if any, chain link, tensioning, cleaning and changing of belt and other worn out parts and reassembling the same in complete shape and oil filling in gear box. Including cost of Transport, Consumables such as bearings, fastners, Screws, pins etc. and hire charges for T&P's. .

Charges for draining the feeder gear box oil, removing the feeder gear box from position, dismantling the gear box , cleaning the gear box, inspection of bearings, gears, assembling the gear box, oil refilling and fixing in position asper the direction of Engineer in-charge. Including Consumables such as bearings, fastners etc. and hire charges for T&P's.

Charges for removal of choked up coal in the gravimetric feeder discharge hopper, centre feed pipe of size dia 610mm, length 10mtr, inside the mills, under bowl and tramp iron chute by chocking and cleaning of the mills internals of feeder internals. Including Consumable and hire charges for T&P's.

Releasing of the coal choked in the P F pipe line from Mill to boiler corner by window cutting at regular intervals including the cost of scaffolding, providing necessary lighting arrangement in the required place for safe working, releasing the choked coal powder welding of the window opening, removing the scaffolding, lighting and evaluation of the released coal spread out in the mill area. Including Consumable and hire charges for T&P's

Charges for opening the manual doors, dismantling the cold air damper links, shaft, flaps, cleaning the above, applying grease, changing if necessary and assembling the above parts and confirming free movement of the flaps etc. Including Consumable and hire charges for T&P's.

charges for dismantling the wornout hot air gate cylinder, shaft aluminium disc, seals top & bottom flanges, renewal of the damaged parts and assembling the all the above to have pucca open/ close operation without assembly leaks, to withstand a pressure of 7kg/cm2. Including Consumable and hire charges for T&P's.

Releasing the mechanical Jam in actuator gear box of hot air cold air damper due to over travel, by removing the bottom cover and releasing the jammed gear, manually, cleaning, rectification of minor defects, reassembling intact, checking and ensuring free operation of damper. Including Consumable and hire charges for T&P's.

Charges for checking the axial and radial alignment between the motor and mill worm shaft by making use of 3 Nos. dial gauges, mounting the dial gauge fixtures on the shaft and setting the dial gauges on the fixtures and adjusting the motor and completing the alignment with in the prescribed limits. Including Consumable and hire charges for T&P's.

Charges for removal of coupling at motor and the cardon shaft fixing of new / old coupling including transport of coupling from stores and devolution of released coupling to stores. Including Consumables such as bearings, fastners, etc and hire charges for T&P's.

Charges for decoupling the cardon shaft from position keeping it on stand, cleaning the grid, spring and shaft, re-fixing the shaft to position, greasing and coupling with worm shaft and motor ends. Including Consumable and hire charges for T&P's.

Charges for cleaning the accumulated coal dust, fly ash and other waste materials and air washing of the bunker and its platforms, belt beams, lateral surface of the bunker, coal valve area, down spout assembly, feeder and feeder floor, hot air duct and its gate, and damper and platforms, cold air ducts and its gate, damper and platforms & structural areas etc. Including Consumable and hire charges for T&P's.

PEARL ENTERPRISES (BID ID -1281555)