MTPS I BM AOH 2025 26 Unit I Complete overhaul of APH A and B Sides 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 leveling 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.( Double sealing arrangement)

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

Charges for cutting and removal of bypass seal fixing angle and fixing the same /new after carried out rectification works at the center section fixing plate with correct radius.

Charges for transporting of 6mm M.S./ Checkered plates from Central Stores/MTPS to Boiler area, cutting into required size, leading, lifting, positioning on the eroded portions of the APH housing and welding the same including cost of welding electrodes

Charges for reconditioning / renewal of Axial seal plate to sector plate seal, Kawool retainer box, link adjuster box.

Cleaning of steam coil Air pre heater.

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.,

Charges for Providing platform and dismantling after completion of work.

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

Dismantling & cleaning the lube oil lines of Guide bearing & Support Bearings with air & steam and reassembling.

Removal of accumulated ash at center section connecting plate area of APH.

Cutting gas

E7018 Welding rod rate.

MS Welding Rod

Hexagonal headed full thread HT Bolt & Nuts with 1 no. washer and 1 no. spring washer. (clause 10.9: IS 1367 & gr 10.9) M 16 x 65 mm.

Consumables and T & Ps

MARSSAL ENTERPRISES (BID ID -1377292)