Overhauling work of Bottom Ash Hopper and DFA system of Unit no. 11 BTPS Obra

Amount

Removal of chocking of seal trough.

Straightening out side seal trough plates by welding/patching with plates.

Removal of iron pieces, garbage, oil deposits, refractory pieces etc from BAH by its shifting away. Cleaning of complete hopper by water jet.

Replacement of MS pipe 8”/6”/4”

Servicing/overhauling of clinker grinder with their drive mechanism.

Replacement/servicing of driven/ driving sprocket. (15/45 teeth)

Servicing/replacement of fluid coupling of clinker grinder.

Servicing/overhauling of clinker grinder gear box of bottom ash hopper.

Alignment of clinker grinder motor.

Overhauling/replacement of Jet Pulsion Pump.

Overhauling/replacement of pneumatic Power Cylinder for Clinker grinder.

Cleaning of flushing nozzle of BAH.

Servicing/overhauling of bottom ash hopper feed gate with roller assembly.

Welding to attend leakage of bottom hopper side plate, ECO hopper, APH hopper etc.

Turing of MS pipe 8”.

Servicing/cleaning of air converted tank & connected pipe.

Replacement/adjustment of chain of clinker grinder.

Closing & opening of discharge gate of BAH.

Fabrication & erection of bend 4” to 8”.

Servicing/Replacement of LP water line valves (Gate/Globe) of following sizes:

Replacement of worn-out/damaged pipe of following sizes.

Removal of chocking of economizer hopper sluicing tank and all connected pipeline.

Patching of eroded plate in flushing device of ECO hopper by MS plate of 5 mm to 12 mm.

Replacement/servicing of nozzle of economizer sluicing tank.

Complete cleaning of economizer hoppers.

Servicing/overhauling/replacement of 8” knife gate valve.

Replacement/servicing of air check valve.

Replacement/repairing of TRESG valve 10”.

Replacement/ repairing of TRESG valve 8”.

Replacement/servicing of Butterfly valve:

Replacement/servicing of valve Size 12”

Replacement of Disc/Seat 1st & 2nd row of ESP Hopper.

Servicing/replacement of Disc/Seat 3rd & 6th row & APH Hopper.

Replacement of fluidizing blower “V”- belt.

Overhauling/replacement of fluidizing blower.

Alignment of fluidizing blower motor.

Replacement of connector/gasket 8”/10”.

Replacement of different size bend:

Replacement/repairing of different size lateral 8”/10”.

Patch work by welding in different area of fly ash system up to one squire fit.

Cutting and replacement spool pipe pieces of different size 6’/8’/10’.

Servicing/cleaning of air washer nozzle.

Servicing/cleaning of hydro mixer nozzle.

Strengthening of ACT cylindrical as well as conical portion installed at 24 m height of vacuum tower.

Replacement of tail pipe (adopter).

Replacement of air washer nozzle.

Fabrication & erection 12” MS lateral portion in discharge side of ACT tank at about 20 m height of vacuum tower.

Replacement/Servicing of vacuum breaker system.

Fabrication & replacement of wear plate of ACT.

Replacement of CI pipe:

Repairing/replacement of different hopper discharge W/O adaptor.

Replacement/repairing of ash intake valve 1st & 2nd row of diffuser.

Servicing of vacuum pump.

Alignment of motor & vacuum pump with belt replacement if required.

Rectification/replacement of damaged pipe, plate, stairs etc. of collecting tower.

Replacement/repairing of body of hydro mixer 10”.

Replacement/repairing of body fad 12” x 6” mach.

Replacement/repairing of air washer tank at ACT tower.

Fabrication & replacement of flushing header nozzle.

Fabrication & replacement of BAH feed gate housing by MS plate.

Refractory works in Bottom ash hopper.

Providing shuttering to carryout the refractory work.

Fabrication & erection of Anchor of BAH.

Scaffolding work in Bottom ash hopper.

Isolation of Bottom ash hopper.

Cleaning of ash slurry sump pit and HP/LP sump pit including disposal of ash/garbage near gate no. 07 including disposal of ash/garbage.

Replacement of 12''/14” MS pipe.

Fabrication & Erection of MS lateral/Bend of size 8''/10"/12"/14”.

Replacement/Servicing of 14” Knife gate valve

Replacement/cutting & welding of Y-piece of DFA system.

Erection/replacement of fluidizing pads

Enamel painting work on complete collecting tower, ash slurry pump, HP/LP pump, seal water pump including connected pipe lines of unit No. 10/11.

M/S DURGA ENGINEERING WORKS

INDIA ENGINEERING WORKS