TTPS Operation Circle MPM II Unit IV Overhauling of gravimetric feeder Bunker gates HAG CAG HAD CAD painting of cold air duct and feeder during the forthcoming overhaul

Amount

Charges for welding of eroded and worn out portion of duct joints, and welded joints by welding with ms welding electrodes.

DISMANTLING OF INSULATION.

REINSULATION.

Insulation work for the area where the work area is above 5 mtr from the ground or from the approach platform.

Charges for overhauling of gravimetric feeder after dismantling all the Idle rollers pulleys, bearings, checking of clean out conveyors and changing of bearings in the clean out conveyor shaft, chain link and changing of Belt and other wornout parts and reassembling the same in complete shape and oil filling in the gear box. This includes transportation of materials from and to stores and consumables.

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 as per the direction of Engineer in-charge, including cost of consumables.

Charges for dismantling the cold air gate, gear box, chain links and gates cleaning the above, applying grease changing the worn out parts and complete O/H of gear box and assembling the above parts and confirming free movement of gates etc.

Charges for cutting & removing the old eroded gate seal frame, arranging the new gate seals in orderly and seal welding to form leaf edge seal assembly in the HAG. (Top seal outer 2 Nos. per gate).

Charges for Renewal of Top seals inner (2 Nos. per gate).

Charges for Renewal of Bottom seals inner (2 Nos. per gate).

Charges for Renewal of Left & Right side seals inner (4 Nos. per gate).

Charges for dismantling man hole doors variant link flaps, flap shaft damper flaps side, grinding for free movement links flap checking for efficient link power transmission and reassembling the above parts as per the direction of engineer in charge in Hot air damper. Dismantling of hot air gate cylinder, dismantling the end caps, shaft and piston and cleaning of cylinder inside, changing piston seals, checking the gate side ways and grinding for free movement and assembling above parts.

Charges for providing of scaffolding, transportation of new / reconditioned expansion joint from stores to site, arresting of the ducts by providing necessary supports with structural matrials and welding, erection of structure for providing chain blocks and safe working platform, marking, cutting and removal of wornout expansion joints, transportation and devolution of scrap joints & pieces to stores including cost of consumables and hire charge for T&P's. 1170 x 1170 Style 2

Charges for overhauling of 1 No. bunker/feeder gate after dismantling the guide roller bearings, cleaning of bearings, changing wornout bearings if any and reassembling the same.

Charges for painting two coat of good quality of enamal paint to the gravimetric feeders cold air ducts, branch ducts, seal air suction header, discharge header, seal air line dampers, instrumentation air line, water line, cold air line leading to gravimetric feeder, painting to be done after cleaning the area with wire brush and emery sheet as per the direction of Engineer in-charge includes cost of paint & all consumables.

RAYAN AND COMPANY