MTPS I TM I Unit III Attending IP Turbine bottom casing Temperature sudden drop and IPT expansion problem during rectification of stator winding earth fault 2022 23

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Dismantling, overhauling and assembling of HP & IP Control Valve Columns.Dismantling the control valve columns after loosening the bolts, dismantling its liners, spring assembly liner sliding pin, dismantling the roller bearings, cleaning the above items, inspection of liner key way and measuring the dimension, welding and grinding to the dimension required, greasing the bearing, assembling the dismantled parts and setting the roller clearance as per the direction of engineer in charge.

Dismantling, Inspection and changing of HP & IP Control Valves:a). Cutting the spindle leak off lines, heating the cap nut of steam chest by gas, dismantling the control valve assembly from steam chest, cleaning of all parts removal of steam strainer and cleaning spare valve and valve seat lapping and checking blue matching, steam chest flange lapping and blue matching, checking valve stem and liner clearance, valve stem DYE penetrant checking etc., Assembling the spare valve with steam chest and tightening the cap nut etc., checking Idle lift connecting the spindle leak off lines and welding as per the direction of the Engineer-in- charge.

b). Drilling the hole in the stem for providing spilt pin, providing the split pin, checking the washer clearance, checking valve lift etc.

Dismantling, overhauling and assembling of HP & IP Cam Shaft arrangement: Dismantling the cam shaft arrangements from its plumber blocks. Inspection of all bearings, changing the damaged bearings, metal building and machining if required in the bearing seating area, cam inspection and changing the damaged cam. Greasing of all bearings and assembling.

Dismantling the Bearing cover, checking the Bearing Interference and assembling after C & I work: Dismantling the bearing cover by loosening the cap nuts, checking the bearing to cover Interference attending correction if any and assembling after cleaning the parting plane and after completion of C & I works.

Dismantling, overhauling and assembling of Barring Gear assembly: Dismantling of barring gear assembly, oil pipe lines, hand wheel assembly, semi coupling of motor, worm cover, worm of barring gear, worm wheel cover, worm shaft lever, removing and inspection of bearings, correction of key ways in worm shaft, inspection and renewal of pressing bush, gland bush and renewal of oil seals, bearings, assembling and coupling alignment etc.

Checking the hot governing characteristics and adjusting the valve openings as per the instruction of Engineer in-charge.

Renewal of Serrated Gasket in HP/IP Transfer Pipe: a). Cutting & Removal of spindle leak off lines, dismantling of flange joint of steam transfer pipe to HP/ IP top control valve , removal of old gasket, providing of w gasket, tightening of the flange joint, welding of spindle leak off lines.

Inspection and Overhauling of interceptor valve .This work involves dismantling of servomotor and valve assembly, blue matching of valve with seat and matching steam ches flange with valve body flange, checking the tightness of valve body studs and rectification if any and assembling of valve and servomotor.

Inspection of LP rotor last stage blades through condenser.

Charges for Consumables and T&P’s item for Sl.No:1 to 11

BHARATHI ENTERPRISES