Maintenance work of IDFDPA Fans and CT System of 5x200MW Units BTPS Obra, Sonebhadra.

Amount

Replacement of new/repaired expansion joint.

Fabrication/Repairing of expansion joint for PA /ID/FD Fans

Overhauling of PA Fans

Servicing/Checking of motor bearings of ID/ FD/ PA Fan (DE/NDE Bearing). With cleaning of brg. housing.

Overhauling/annual survey of FD FAN.

Replacement of inner/outer bearings of FD Fan.

Changing the impeller of FD Fan.

Changing of impeller/outer/inner bearing/shaft of ID Fan.

IGV servicing of ID/FD/PA Fans.

Servicing/Repairing of discharge dampers of ID/FD/PA Fans and Inlet/Outlet Dampers of ESP.

Setting of IGV of ID/FD/PA Fans

Changing/repairing of Damper Flaps

Attending Oil leakage from Labyringth seal of motor bearing of ID/FD/PA Fans

Changing motor bearings (DE/NDE) of ID/FD/PA Fans with cleaning bearing housing and alignment.

Sealing of dampers of ID Fan suction & discharge damper.

Changing fixed blades/attending the fixed blades leakage of ID Fan

Repairing the impeller housing of ID Fans.

Repairing of diffuser cone

Repairing of fixed blades and Inlet guide vanes.

Changing of IGV of ID/FD/PA Fans.

Setting verticality of impeller housing and inner bearing housing of ID Fans housing of ID Fans.

Blue matching with spring back of outer/Inner Motor or Fan Brg. housing/pedestal of ID/FD/PA Fan

Loose point checking of all points of ID/FD/PA Fans (Checking loose points of one unit will be taken one job)

Servicing of Lube oil console of ID/FD/PA Fans.

Servicing/Repairing of oil coolers of ID/FD/PA Fans.

Fabrication of modified outer bearing Pedestal of ID Fan.

Cleaning and greasing of bearings of IGV of ID/FD/PA Fans

Loose point checking of CT system and CT Fans of one unit.

Replacement of angular Joints of ID/FD/PA Fans OR Opening man hole and checking of related duct.

Decoupling-Coupling or with Replacement of broken coupling bolts with rubber bush of ID/FD/PA Fans.

Replacement of both bearing pedestals of motor of ID Fans during O/H of motor.

Attending dust leakage from gland of ID/FD/PA Fans discharge dampers and inlet/outlet dampers of ESP by opening and changing gland packing.

Checking inner/outer bearings of ID/FD Fans.

Cleaning duct of:

ID Fan from suction damper to chimney and air pre heater outlet damper to ESP inlet.(One job for one unit).

FD Fan suction damper to SCAPH (One job for one unit).

PA Fan discharge damper to cold PA header complete (One job for one unit)

Alignment of ID/FD/PA Fans with motor.

Repairing/Replacement of baffle plates according of the size of duct by cutting, bending and welding.

Cutting, Patching and Welding of ID/FD/PA Fans ducts, rails, sheds and stayers.

Changing of impeller housing of ID/FD Fan.

Changing of oil seal/coupling rubber pads of CT Pumps.

Overhauling of the dampers.

Changing of damper flaps.

Replace/Repair of supports into ducts.

Servicing/Overhauling of cooling tower pumps.

Servicing/changing of LP valves/NRV of CT System and all LP lines upto LOPs.

Servicing / overhauling of CT Fans.

Repairing/Replacement of support protection/main support of impeller housing/bearing housing of ID/FD/PA Fan during changing of impeller/motor

Changing Lube Oil Pump of ID/FD/PA Fans

Attending the dust leakage from expansion joint of ID/FD/PA Fans.(min length 1.0 meter & max. 2.0 meter.)

Cleaning of motor /fan bearing pedestal of ID /FD/PA fans and fan Bearing Housing of PA fans & adjustment of oil flow /attending oil leakage if required. (One job for one auxiliary of unit)

Cooling of Motor Bearing Pedestal of ID/FD/PA Fans and Inner Fan Bearing/outer fan bearing of ID Fan during high temperature. (One job for one fan for 8 hrs.)

Regular checking / Tightening (If required) of loose Nuts & bolts of foundation, IGV housing, fixed blades, Top cover etc of ID/FD/PA fans in running conditions. (Note: Checking of all the fans of one unit will be treated as one job)

Cleaning/Repairing of oil coolers / oil filters of lube oil /suction wire mesh of ID/FD/PA fans.

Servicing of Lube Oil Pump of ID/FD/PA Fans.

Changing of Coupling/coupling tyre/star coupling of Lube Oil Pump Of ID/FD/PA Fans.

Cleaning of Lube Oil System of ID/FD/ PA fans

Greasing of Bearings of ID/FD Fans (I No. for 1 brg.)

Greasing of all dampers chain of PA/ID/FD Fan (One auxiliary of one unit will be treated as 1 job)

Servicing of Guillotine gates of ID/PA/FD fans and ESP inlet/outlet duct. (One gate of one unit will be treated as one job)

Double Plating in ES.P. inlet/outlet duct & I.D. Fan discharge duct

Replacement of gland packing with New One in CT Pump.

Changing flange gasket of valve /Pump.

Replacement/Repairing of shade/Suction Mesh of ID/FD/PA Fan’s etc. (6 Mtr x3 Mtr )

Replacement/Repairing of cooling water/ Oil line of ID.PA & FD Fan system. 25 mm to 100 mm (O.D.)

Checking of Impeller by opening the manhole cover of ID/ FD /PA fan.

Replacement of motor Coupling/water cooler (by repaired or new one) of ID/ FD /PA fan.

Cleaning of IGV Pedestals and IGV lever and changing the angular joint of ID/FD/PA whenever required in presence of JE/ AE.Note: this work will be carried out in running condition of fan. (One fan will be treated as one No.)

Internal cleaning of side glass of motor bearing. (One job for one auxiliary of unit)

Loading/Unloading & transportation of Material/spares from CSD-I/II OTPS to site store of BMD-II,3x200MW/BMD-IV,2x200MW,BTPS

Attending minor maintenance work of ID/FD/PA Fans and CT system during night shift.

M/S Jai Bharat Engg Co (BID ID -4766407)