Service Contract towards Boiler (Unit-4, SgTPP) Overhauling (Pressure Parts, Soot Blowers etc) with Boiler Steaming License Renewal in Nov-Dec, 2026.

OVERHAULING OF BOILER PRESSURE PARTS-U4

Overhauling of boiler drum

Scaffolding at first pass of the boiler (furnace zone) with top of bottom ash hopper sealing

Cleaning of furnace Zone, Div. panel, PLSH,RH 1st stage, RH 2nd stage, arch area by HP water Jet

Scaffolding at Economiser, LTSH Zone and cleaning of Economiser Zone and LTSH, Screen area by LP water

Butt Joint (Insertion of tube) of of Economiser & Water wall and Eco Hanger tubes.

Butt Joint (Insertion of tube) of LTSH (Including of LTSH hanger tubes), SH tubes . Other than T91 tubes

Butt joint(Insertion of tube) of T91 tubes without SR.

Butt joint(Insertion of tube) of T22 tubes

Dissimilar butt joints of coil

Removal and fitting of tube guard(new)

Maximum 6 Inch length guard tube fitting as where requirement (Cutting/fitting/welding included) and cassette baffle repositioning

Removal and fitting of new Cassette Baffle

Inspection and run welding of economiser hopper& non PR parts area (Run welding)etc.

Deposition of weld metal on tubes /stubs/header etc.

LTSH coil (Pair) pulling,inspection, repairing and fitting with proper alignment. Per coil means either upper or lower bank.

Economiser coil(Pair) lifting, inspection repairing and fitting with proper alignment. Per pair means coil with tripple banks

Alignment of Div.panel,Platen, RH Front, RH Rear coil, LTSH,Eco coil and Spacer tube. Removing of support,flex and ties and refixing are included.

Replacement of HP valve of size 1 inch by straight tube or new valve

Replacement of HP valve of size 2 inch by new valve

Replacement of HP valve of size 3 inch by new valve

Fabrication of different sizes of bends , U-loops etc.

Replacement of boiler metal temp probe.

Casing/membrance strip welding

D-metering of boiler tubes in all the high pressure zones of the boiler viz. LTSH, Economiser, DivSH,PSH, Front R/H, Rear R/H, Screen, furnace wall, roof tubes etc(as per direction of EIC).

Radiography of pressure parts welding joints

Stress relieving of welding joints per day

Servicing of scaffolding door at boiler & pent house

Servicing of manholes and peepholes of boiler.

Scafolding below the bottom ash hopper for inspection of woven wire cloth and scallop plates and if found damage fixing of damage scallop plates

Anchor fitting for refractory work at different location of the boiler.

Lance tube replacement of LRSB with scaffolding

Wall soot blower (88 nos) servicing . Lance tube length adjustment, cleaning, greasing, compartment repair.

DPT at inside of stub joint, wind box and four corner of furnace. Rate is included with scaffolding (if necessary).

Assistance of reheater hydro test

Bottom ring header inspection

Scaffolding at just bottom of the backpass HDR

Seal plate and Deeper plate of trough seal Removing, Repairing and Replacement

BOILER PRESSURE PARTS EXPERT VISIT

ENGAGEMENT OF BEST/ABL EXPERT FOR SAFETY VALVE OH WORK

ENGAGEMENT OF BEST/ABL EXPERT FOR soot blower OH WORK

ENGAGEMENT OF BEST/ABL EXPERT FOR HANGER SUPPORT OH WORK

Expert Mobilization Charges

Replacement of HP valve of size 6 INCH by new valve

Replacement of HP valve of size 4 INCH by new valve

BOILER INSPECTOR SUNDRY EXPENSES (OTHER THAN FEES)

Hiring of reciprocating pump for boiler hydro

Supply of NDT Level-II Expert (2 PERSONS)

Safety valve Trivy test [Drum,MS,CRH,HRH,PRDS]

HIRING of Hydra

LRSB servicing

Tractor trip

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