Biennial Work Contract for Routine and Preventive /Breakdown maintenance of Boiler Non-Pressure Part of Unit 1 and 2 of 2x600MW, SSTPP, MPPGCL, Dongalia

COAL CIRCUIT

Complete Overhauling of Coal Mills

Complete Overhauling of Raw Coal Feeder including COC System

Replacement of Coal Feeder Chute

Complete Coal Burner Assembly Replacement

Repair & replacement of Guide pipes of Oil Burner/ Scanner

Replacement of Journal head Assembly with Grinding Roll

Repair, Patching, Hardfacing/Replacement of MDV

Fabrication/Replacement of Journal Head Liner Support Assembly

Repair/ Replacement of Multi Port Outlet Assembly.

Replacement /Rotation of Pipe (Transition Piece) above MDV

Replacement/Reversal of Orifice or replacement of victaulic coupling in P.F.Pipe lines

Servicing/Rectification of Feeder Intet Gate, Jamming of Bunker Outlet Gate

Replacement of Worm Shaft Bearing

Replacement of Worm Shaft Oil Seal

Repair / Replacement of Air Port Assembly

Servicing of Rollar Journal Assembly

COC Shaft/Sprocket/Chain (Repair/Replacement)

Replacement of Bowl Hub Cover

Alignment of Mill Motor with Gear Box

Replacement of Geared Coupling or Bibby Coupling

Preparation of Quick Erect Scaffolding System (Cup lock System)

Replacement of ceramic lined coal pipe bends /Mill outlet Elbow (MOE)

Replacement of Journal Stop Bush Bolt/Spring Stud bearing (wear sleeve) of journal compresson spring

Repairing of coal pipe/PF Bends//MOE/FIE

Replacement of straight P.F pipe with or without collar.

Painting of Coal Mill/Support Structure, Gearbox, Heat Exchanger etc.

Servicing of RCF Main drive gearbox

Removal and refixing of burner panel air seal plate with fasteners

Cleaning of Mill Gearbox Housing and coolers

Online Empty,cleaning of raw coal bunker

Replacement of Inner cone Section

Servicing/Replacement of classifier assembly

Replacement/Repairing & Rotation of center feed pipe upper and lower

Servicing of Pinion Shaft assembly

Repairing and resetting of bottom insulation cover plate of coal mill reject chamber

Repairing/Replacement of diversion plate inside coal reject chamber

Replacement/Servicing of Labyrinth seal

Repairing/Replacement of Grinding Roll Lock Nut of RJA

Repairing/Replacement of Ventury cone & collar

Fabrication of coal pipe Flange/Collar

Repairing of coal pipe support frame

Repairing of Journal opening cover

Repairing of Journal head

Repairing of seperator body top

Picking & Transportation of muddy coal removed from coal mills/RCF/Coal bunker and its surrounding area to CHP coal yard at specified location at 2x600 MW,Unit.

Servicing of ID Fan

Inspection & Servicing of RTL 10" Dodge Sleeve Bearing

Internal, Inspection and Cleaning of Fan

Alignment of ID Fan with motor

Maintenance of Seal Air Fans

Removal and Refixing of Impeller

Servicing of Fan bearing and Coupling Replacement

Alignment of Seal Air Fan with motor

Maintenance of FD/PA Fans

In-Situ Replacement of Grooved Ring/Seal (Actuator End)

Replacement of Grooved Ring/Seal (Driving End)

In-Situ Replacement of Counter Weight & Lever Assembly of Blade Bearing Assembly

Alignment of FD /PA fan with Motor

Repair of Steel Structures Welding of Steel Plate (6 to 20 mm)

Replacement of Bracing Pipes/Protective Angles Inside Duct

Replacement of Beams / Channels inside Ducts

Cleaning of Ash from inside the duct

MAINTENANCE OF SEALING SYSTEM OF AIR PREHEATERS

Leveling of Axial Sector Plate

Leveling of HE Radial Sector Plate

H.E.Radial Seals Repair/Replacement & Setting

In-Situ condition repair of Sector Plates

MAINTENANCE OF DRIVE SYSTEM AIR PRE HEATER

Overhauling of Drive Gearbox of Air pre heater

MAINTENANCE OF SOOT BLOWING SYSTEM AIR PRE HEATER

Servicing of Soot Blower Gearbox

Replacement of Lance Tubes & Protection Cover

ELECTROSTATIC PRECIPITATOR (ESP)

Internal Cleaning of ESP Fields & Hoppers

Alignment of Emitting frames

Replacement/repairing of rapping hammers of CERM/EERM/GDRM

Replacement of shaft insulators

Replacement of support insulators

Repair of ESP manhole door

Repair of ESP hoppers without steel

Painting of ESP Structure/Beam/Channel etc.

MAINTENANCE OF DAMPERS AND GATES

Cleaning, Inspection & Seal Replacement of Dampers

Servicing of Dampers

Servicing of Guillotine Gates

Servicing of Actuator Gear Box Assembly

Replacement of Eroded /Damaged Damper

Fabrication & Replacement of Damper Seals

Repair /Servicing of Seal Blowers

FABRICATION & ERECTION OF PLATFORM

Cutting of channel, I-beam, Angle to required size after taking measurement.

Welding of Channel, I-beam, Angle with the structure beam or support of boiler

Cutting of steel from steel plate of required size after taking measurement.

Welding of steel plate with the structure beam or support of the boiler

BOTTOM ASH HOPPER AREA

Collection, lifting, transportation and cleaning of clinker slag near bottom hopper area of boiler of Unit#1 & 2.

Breaking and removal of lumps of clinker accumulated in bottom ash hopper of Unit#1 & 2.

IDLE CHARGE

Idle charges per month

Routine maintenance of Boiler Non-Pressure Part of Unit#1 & Unit#2 of 2x600 MW, SSTPP, MPPGCL, Dongalia Note: - Quoted amount should meet the Minimum Workable criteria i.e., should not be lower than Rs. 8,25,272.68 per month else offer shall be rejected.