MTPS I BM Unit III Boiler Pressure parts AOH 2021 Maintenance of Burners and replacement of worn out fasteners at cover plates

Amount

OVERHAULING OF BURNERS: Removing inner and outer panel door, releasing all reach rods from burner tilt mechanism, dismantling of direct and indirect burner tilt mechanism components for inspection

Inspection, cleaning, rectification and alignment of burner tilt mechanism components like bell crank clevis and drive lever, reassembling after fixing of coal nozzles, etc., with proper lubricants and connecting all reach rods with burner tilt mechanism including fixing of inner panel, outer panel doors (Asbestos tape gaskets and special lubricants will be supplied by board).

OVERHAULING OF COAL COMPARTMENT ASSEMBLY: Transporting of new coal nozzle compartment assembly to work site and old coal nozzle assembly from site to stores. Lorry and crane will be spared by board at free of charge for transporting

Dismantling of old nozzle assembly from its compartment, cleaning and preparing the coal compartment for re-fixing of new coal nozzle

Checking of new coal nozzles and tips for proper aligning of coal nozzles, checking the clearance, rectification if any, fixing of new coal nozzle assembly inside the coal compartment in position and checking the clearance, checking the burner tilt, etc

OVERHAULING OF OIL COMPARTMENT ASSEMBLY: Overhauling of oil gun assembly from stationary union to diffuser after dismantling, cleaning, checking the critical dimension, checking of guide tube assembly and supports, rectifying any damages, re-fixing oil gun assembly, igniter guide tube etc., after overhaul

Removing the oil nozzle tip with reach rod from furnace side after removing the fixing pins, overhauling of nozzle tip and linkages, checking the holes, lubrication of pins, re-fixing of oil nozzle and checking the clearance with wind box

Charges for overhauling of air compartment assembly, work involves removal of air nozzles, reach rods, checking clearance, over hauling and inspection of tip links, pins etc

Painting of burner components and burner zones with red oxide paint, including the cost of paint.

Painting of burner components with heat resistant aluminum paint, including the cost of paint

Charges for removal of the Oil & Atomising steam metallic flexible hoses from the Oil gun station, Oil gun & Scanner cooling rubber hoses etc. and refixing the hoses after completion of the burner maintenance works including the cost of consumables, hire charges for T&P’s etc.

Charges for servicing of Oil & Atomizing Pneumatic Burner trip valve by removal of valve from the line, dismantling the bonnet from the body, inspection of the disc, renewal of disc if required, renewal of the body gasket and refixing

Charges for removal of defective Burner corner end air nozzle tips and reconditioning of eroded portion by patch welding, leading, lifting, and fitting in the burner corner in its position and making proper alignment and operation

Charges for Reconditioning of used & worn-out Inter Air Nozzle Tips work involves the cutting & removal of old splitter plates, grinding and edge preparation, cutting of new SS splitter plates & patch plates for inner cover plates and outer body of square tip including transportation. Fixing of new splitter plates inside the tip and inner cover plate patching in 4 sides checking the alignment

Charges for Reconditioning of used & worn-out oil Nozzle Tips work involves the cutting & removal of old splitter plates, grinding and edge preparation, cutting of new SS splitter plates & patch plates for inner cover plates and outer body of square tip including transportation. Fixing of new splitter plates inside the tip and inner cover plate patching in 4 sides checking the alignment.

Charges for cutting and removal of worn-out deteriorated bolts & nuts in burner corner Nos. 1 to 4 of boiler.

Fixing new bolts & nuts in inner, side and outer cover plates of burner corners inclusive of all consumables.

Spiral wound gasket-winding material SS 304L, Filter material: pure flexible graphite only with outer ring material .CS Size:106x79x5mm With outer ring of size 130x106x3mm

Foam seal sealer 30-45 (Dum Dum Paste).Hy seal 30-45 Dum Dum putty

Materials, T & Ps and consumables as per annexure

KUMAR ERECTORS