MTPS I BM AOH 2021 22 Unit I Complete overhaul of APH B and other related works

Amount

Opening of all manhole doors, and closing manhole doors after completion of work including changing of asbestos ropes and clamps in the doors.

Removal of ash deposit around guide bearing area, and inside the APH

Charges for cutting and removing of rigid stoppers checking and correction of rotor leveling, checking and correction of critical distance between guide bearing housing and housing sleeve and fixing, welding the rigid stoppers and provide shim packing in between guide bearing housing and permanent stoppers

Charges for levelling and aligning of the radial sector plates and axial seal plates with respect to the rotor axis

Charges for removal of worn-out/damaged bypass seals (complete assembly CE & HE) fixing and positioning properly with new seals. (Including transporting of new materials from stores to site and scraps from site to Stores).

Charges for finding the high point in 'T' bar, adjusting the bypass seals to correct clearance and clamping properly in both hot and cold ends of APH

Charges for replacing of rotor post seal at hot end and cutting of sealing ring segments, cutting of tracking rod stuffing boxes, kawool packing and patch up sealing ring segments and leak arresting works around the guide bearing area and fixing of rotor post seals and rectification works on the eroded portions of spool seal assembly.

Overhaul of APH soot blower mechanism including changing the bearings, soot blowers spray nozzles, if necessary and changing of lubrication etc

Inspection of support bearing by removing the cover, drain oil, cleaning and checking level etc.

Charges for removal of worn-out radial seal in both cold end and hot end (complete assembly) and re fixing with new HT bolts & nuts and positioning. (Including transporting of new materials from Stores to site and scraps from site to stores). (Double sealing arrangement)

Charges for removal of worn-out axial seal in both cold end and hot end (complete assembly) and re fixing with new HT bolts & nuts and positioning. (Including transporting of new materials from Stores to site and scraps from site to stores). (Double sealing arrangement)

Charges for fixing up straight edge after finding the low point of sector plate, adjusting the radial seals to correct clearance and clamping the seals in both hot end and cold end of APH. (Double sealing arrangement)

Charges for fixing up straight edge after finding the low point of axial seal plate, adjusting the axial seals to correct clearance and clamping the seals properly. .

Charges for removal of existing 'T' bars, fixing old/ new 'T' bar after adjusting to correct radius and clamping properly.

Charges for removal of bypass seal fixing angle and fixing the same / new angle with correct position after rectification of the center section fixing plate.

Charges for transporting of 6mm M.S. plates from Central Stores Boiler site area, cutting into required size, leading, lifting, positioning on the eroded portions of APH housing and welding the same and transporting of scrap materials to Stores.

Charges for Reconditioning of axial seal plate to sector plate seal, Kawool retainer box, link adjuster box.

Cleaning of steam coil Air pre heater.

Charges for removing the existing eroded duct supports of APH flue gas duct area transporting of new pipes/Angles from Central Stores/MTPS, cutting into required size leading lifting, positioning and welding.

Water washing of Air pre heater.

Removal of cold end baskets from its position, leading to the adjacent area of Air Pre heaters, dry cleaning, high pressure jet water cleaning and then air cleaning of the cold end baskets, putting the heating elements after rectification of cold end diaphragm and cold end gratings.

Charges for Rectification of Hot end stationary Spool and renewing the retainer ring, Packing rings and etc.,

Providing platform and dismantling after completion of work (For renewal / rectification of pipe protection cover & the eroded twin nozzle pipe)

Fixing new protection cover for the soot blower pipe, Renewal of eroded guard pipe and Renewal of new pipe

Charges for Dismantling & cleaning the lub oil lines of Guide bearing & Support Bearings with air & steam and reassembling

Removal of accumulated ash at center section connecting plate area.

Consumables and T&Ps for S.No.1 to 26

MARSSAL ENTERPRISES