Annual Maintenance contract for mechanical maintenance and Boiler tube leakage rectification job of Unit 3 4 Boiler 500MWx2 and Auxiliaries SgTPP

Name of job:

mandatory works: Mech maint mandatory works

Optional Job: Roller Journal Servicing

Duct Repairing (Steel works )

APH steel works

APH seal adjustment

Replacement of damage R-J Removal of damaged roller journal complete assembly from coal mill and insertion of serviced roller journal assembly into the mill and complete box up of the coal mill(optional job) as per Annexure.

Coal feeder overhauling

Coal pipe bend pipe replacement

APH gearbox replacement

HFO/LDO pump replacement

ID fan bearing replacement

Overhauling of PA fan

Overhauling of FD fan

O/H of Seal air fan inclu runner replace Complete overhauling of seal air fan including runner replacement.

Area/equipment cleaning Area/Equipment Cleaning with scope of supply of separate manpower, tools and tackles, conveying vehicles like tractor with operator and fuel.

Scaffolding per 6mtr vertical 2 mtr hori

Sky climber fitting inside boiler with

Hiring charge of laser cutting machine/

Pump with pump operator required for any

Painting work

PA fan suction cover cleaning

Mill overhauling and maintenance: Coal mill overhauling including RJ assem RJ assembly,servicing, replacement and orfice and MDV servicing Classifier checking in position.

Classifier cone replacement during overh

Bowl replacement during overhauling

Yoke replacement during overhauling

Coal mill gearbox replacement including

Roller Journal hard facing work

BTL Rectification Job: Water Wall Tube Joint without Scafldng Tube OD 51XT6.0mm, SA 210 Gr-C

Economiser Coil Joint Without Scaffoldin Tube OD 38.1 X T 5.3mm, SA 210 Gr-A

LTSH joint without scaffolding Tube OD 47.63 X T 6.6mm, SA 213T11

Division Panel joint w/o scaffolding T22 Tube OD 51 X T 7.1mm, SA 213T22

Division Panel joint w/o scaffolding T91 Tube OD 44.5 X T 5.6mm, SA 213T91

Platen SH joint w/o scaffolding T22 Tube OD 51X6.3mm SA213 T22

Platen SH joint w/o scaffolding SS-347H Tube OD 63.5X8.0mm SA213TP347H

Reheater joint without scaffolding T11 Tube OD 47.63XT4.5mm SA 213T11

Reheater joint without scaffolding T91 Tube OD 54.0mmXT5.0mm SA213T91

Screen tube/Arch tube/water wall hanger tube/ steam cooled wall/Roof tube without scaffolding Tube OD 63.5mmX12mm SA210GrC

LTSH hanger tube without scaffolding Tube OD 51X11.0mm SA210 Gr-C

ECO hanger tube without scaffolding Tube OD 45.5X7.1mm SA210 Gr-C

Other superheater joint

Stress relieving per day

Removal refitting fabrication guard tube

Build up on eroded tubes per sq inch

Radiography per day

Welding of membrane strip/fin

Fabrication of different sizes of bends

Scaffolding per 6 meter horizontal At reheater, platen SH, division panel, screen tube, roof tube

Scaffolding per 6 meter vertical at furnace wall, roof tube, platen, division panel, economizer

Demetering boiler tube per day & report

Boiler 2nd pass scaffolding water washin By LP water.

Economizer/LTSH coil lowering and liftin Economizer/LTSH pair coil lowering and subsequent lifting aftercompletion of job without welding joint including coil alignment.

Complete scaffolding inside boiler

ENCOTEC ENERGY INDIA PVT.LTD.