NCTPS I SE MI circle Boiler Maintenance Division Annual Overhaul work for the year 25 26 Specification No 241 25 26

Amount

Opening of all manhole doors, and closing of all manhole doors, after completion work including changing of asbestos ropes and clamps in the doors, consumable and T&P’s.

Removal of accumulated ash at center section connecting plate area of APH “A” side Including Consumables and T&P’s.

Charges for leveling and aligning of the radial sector plates and axial seal plates with respect to the rotor axis. Including consumables and T&P’s.

Inspection of Guide bearing: Arresting the APH rotor rigidly in all the axial doors around the entire Circumference of the rotor. cutting 300 mm channel to the required length and welding the beam one end at the APH rotor angle another end at the axial door area (APH stationary area) with high rigidity for arresting movement if any of the rotor. Releasing the entire arresting channels after Inspection. Including Consumables and T&P’s.

Charges for removing the cover of support bearing, draining of lubricating oil from the sump, cleaning, flushing, rinsing and inspection of bearings checking level and refilling with new oil and re packing the covers properly.Including Consumables and T&P’s.

Charges for dismantling cleaning of lub oil cooler nest and filters.Including Consumables and T&P’s.

Charges for assembling of lub oil cooler nest and filters. Including Consumables and T&P’s.

Charges for hydraulic testing of the APH Lub oil cooler @ 15 Kg/Cm2 pressure for 30 minutes in the presence of TANGEDCO Engineer. Including Consumables and T&P’s.

Charges for Dismantling & cleaning the lube oil lines of Guide bearing & Support Bearings with air & steam and reassembling. Including Consumables and T&P’s.

Charges for Removal and refixing of support bearing water shield and air sealing ring. Including Consumables and T&P’s.

Charges for Overhauling of APH lub oil pumps and valves for Support bearing and guide bearing. This work includes Dismantling, cleaning, Inspection of bearings, Gears, internals and replacement of the same if required then reassembling. and alignment works etc. Consumable, T&P’s, oil seals, bearing etc.

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. Including Consumables and T&P’s.

Charges for Checking and cleaning of APH main gear drive unit including decoupling of APH drive from motor, dismantling of fluid coupling, draining of gear box lube oil from gear box, opening of gear box inspection doors and bottom pinion door, cleaning, inspection and Checking of all components inside the gear box and pinion, checking the tapper lock bush, root gap and bottom gap of pinion and pin rack, and grinding the bur projected on bottom surface of the pinion and renewal of lubricant oils and assembly the same. Including Consumables and T&P’s.

Charges for dismantling of Air motors/inspection and renewal of internals, vanes, bearings and reassembling works. Including Consumables and T&P’s.

Charges Cleaning of steam coil Air pre-heater.Including Consumables and T&P’s.

Renewal of worn out Multi disc &coupling Bolts.i.e, disconnecting the runner half coupling, removing the worn out multi disc and runner half coupling bolts and reconnecting the runner half coupling and complete aligning works including motor, Consumables and T&P’s.

Charge Alignment of APH drive motor with speed reducer through fluid coupling. Including Consumables and T&P’s.

Renewal / reconditioning of metallic expansion joints in APH Eco Outlet Size (Style # 4) Work involves arresting the upstream and down stream of duct, cutting and removal of existing eroded cover plate and metallic expansion joints and gauching. Leading, lifting, positioning of new/ old expansion joint,aligning with the duct channel and complete welding.Including Consumables and T&P’s.

Inspection replacing the worn out over running clutch and related works. This work involves disconnecting the Bibby resilient coupling, removing the over running clutch and its extension shaft. Replacing the worn-out over running clutch, extension shaft. Checking and correction of alignment of the Bibby resilient coupling. including consumables and T&P's.

APH – Inspection – Replacing the worn out fluid coupling of the speed reducer. This work involves disconnecting the runner half coupling, renewing the new fluid coupling or replacing the same coupling after rectification and checking the alignment and trial run. Including consumables and T&P's.

Overhaul of air motor, over running clutch, Bibby coupling and connected air lines, valves etc. including changing the damaged filters valves, if necessary, etc. complete (spares will be supplied by TNPGCL on free of charges) including consumables and T&P's.

Overhaul of APH soot blower mechanism including dismantling, changing the bearings, soot blowers spray nozzles, if necessary and changing of lubrication and reassembling etc. consumables and T&P's.

Charges for Fixing new protection cover for the soot blower pipe, Renewal of eroded guard pipe and Renewal of new pipe including consumables and T&P's.

M/S.KSM Engineering (BID ID -1520882)