Work contract for Annual Preventive/Breakdown maintenance of Non Pressure parts of Boiler and its Auxiliaries for unit no. 1 to 4 of 210 MW of PH-I and PH-II at SGTPS, MPPGCL, Birsinghpur

Coal Mills

Overhauling of coal mills consists of dismantling of complete mill, repairing rectification servicing of mills & its auxiliaries, replacement of grinding element & other damaged part reassembly alignment, painting & commissioning

Replacement of reject chamber liner of Bottom Housing of coal mill

Replacement of Air seal housing of coal mill

Repairing of loading unit assembly of coal mill

Reclamation of Old damaged throat plate assembly of coal mill

Re-conditioning/replacement of mill outlet turret assembly

Repairing/Replacement of Clasifier Centre Sleeve of coal mill

Replacement of old damaged throat plate assemblyof coal mill

Replacement of loading unit assembly of coal mill

Replacement/Repairing/Gap maintaining of Air seal ring assembly of coal mill

Insertion of fill in ball in coal mill

Replacement of Broken Ball in coal mill

Replacement of complete set of grinding balls

Replacement of Mill Gear Box

Replacement of yoke assembly of coal mill

Replacement/Rectification of Lub oil pump/cooler of coal mill

Overhauling/Servicing of Mill Gear Box

Replacement of input shaft oil seal of Mill G /Box

Re- fixing of broken loading Block assembly of spider of coal mill

Replacement of broken swivel bolt / stirrup pads of coal mill

Replacement of complete set of swivel bolt & stirrup pads of coal mill

Replacement of broken top ring /spider assembly of Mill

Adjustment of Classifier Vanes openings/ Classifier Adjustable Sleeve Height

Replacement/Repairing of center feed pipe of coal mill

Replacement of coal chute above center feed pipe of coal mill

Alignment of Mill gear box to motor

Replacement of 01/02 bearing of I/P shaft of mill G/Box in-situ condition

Reconditioning of yoke stem of coal mill

COAL DUST TRANSFER SYSTEM

Repairing of coal pipe /bends /duct/hopper of boiler

a) Repalcement of 603 mm Ceramic lined Bore bends

b) Repalcement of 433 /437 mm Ceramic lined Bore bends

a) Repalcement of 603 mm ID MS straight pipe

b) Repalcement of 603 mm ID ceramic linedcoal pipe

c) Repalcement of 433/437mm ID MS straight pipe

d)Repalcement of 433/437mm ID ceramic lined coal pipe

Cutting & grinding of flanges from old coal pipes/bends

Repairing of NRV's / Splitter / Ventury / Bend

Repairing & Servicing of Coal pipes hangers & supports

Replacement of Ventury/Orifice plate/Johnson coupling/Gasket of coal mill

Cleaning of chocked PF discharge pipe of coal mill

Reconditioning of Discharge spool piece of coal mill

Rotation of straight pipe by 180 degree (603, 433, 437, 454,461 mm)

RAW COAL FEEDER

Replacement of top /bottom plate of RCF

Replacement/Repairing of drag link chain of RCF

Replacement of Geared Coupling/Resoflex coupling of RCF

Replacement/Repairing & Servicing of PIV gear box

Replacement/Servicing of Radicon/Flander Make GB of RCF

Repairing of RCF Chute ( TOP of RCF)

Repairing of RCF body

With Steel

Without steel

Repairing of Foundation & Duplex Drive Wheel of RCF

Replacement of oil seal of output shaft of Redicon/Flander make Gear Box of RCF

Online Empty,Cleaning & repairing of Raw Coal Bunker

FAN CIRCUIT

Replacement of Fluid Coupling and Alignment of ID Fan

ALIGNMENT OF F.D. & P.A. FANS

Replacement/Rectification of 180mm white metal fan Bearing of ID Fan

Replacement/Rectification of 6.5 inches white metal Bearing of ID Fan

Replacement/Rectification of 4.5 inches white metal fan bearing

Replacement/Rectification of 4.0 inches white metal fan bearing

Replacement/Rectification of 90 mm antifriction fan brg

Balancing of ID/FD/PA/SA/CA/Scanner Fan

Replacement of ID fan runner

Servicing of Fluid Coupling of ID Fan

Replacement of Impeller shaft assembly of PA Fan

Replacement/Refurbishing of Oil cooler of ID/FD/PA Fan

Removal & fitting of half coupling of ID Fan

Replacement of ID/FD/PA fan hose pipes

Hard Facing of ID fan impeller blades/cone/centre plate

Checking / replacement of PA fan Thrust Pads/ Labyrinth Seal

Checking / replacement /Alignment of SA/CA/Scanner Air fans

Checking and tightening / replacement of Various fan Nut bolts

Replacement of Bearing End cover of ID/FD/PA fans

Replacement of Carbon Seal/Cooling Disc of ID/FD/PA fans

Repairing of PA Fan casing

TUBULAR AIR PRE HEATER

Application of refractory

Taking out damaged ferrules/sleeve and fitment of sleeves inside of air heater tubes

Repairing of Hopper/Casing of Air Heater with steel

Repairing of Hopper/Casing of Air Heater without steel

Hydrojet Cleaning of Air Heater Tubes

Replacement of Non Metallic expansion joints of Duct & APH

Replacement/Repairing of Diversion plate

Fabrication & Erection of Metallic Expansion Joint of Ducts & APH

Expansion of ends (Old fitted tubes )

Fabrication of cover plate by 3.15mm/2mm HR sheet

COAL BURNERS

Servicing of PF burners

Repairing of PF Burner assembly

Servicing of PF Nozzles

Replacement of PF Nozzles

Replacement/Repairing of Liners of Banjo

Making Air Resister / Secondary air dampers Operative(Minor)

Repairing/ Rotation of Core Tube

Replacement of Core Tube Assembly

LDO/HFO Pump

Servicing of HFO Pump

Servicing of LDO Pump

Servicing of HFO Heater

Complete servicing of HFO Strainer/Filter

Repairing of collecting electrode and alignment

a) Repairing/Replacement of Discharge electrode & their fittings

b) Replacement of Discharge electrode frame

c) Repairing of Discharge electrode frame

Repairing/ Replacement of shock bars

Repairing/ Replacement of gas distribution screen

Repairing of rapping mechanism electrode

Repairing/ Replacement of CERM/DERM Hammers

Repairing of ESP hoppers

Complete Repairing/ Replacement

a)Support insulator

Repairing of ESP casing by

a) With steel

b) Without steel

Repairing strengthening & straightening work of roof beam

Repair/Replacement/Refixing of shock bar guide (Rapping end)

Repair/Replacement/Refixing of shock bar guide (Non rapping end)

Repairing of support angle

Repairing of support angle

Repairing of shock bar pad for CERM

Repairing of man hole door

Servicing and replacement of rapping gear box

UNITED ENGINEERING