Routine Maint Boiler and Breakdown Maint Boiler Pressure Part - First Pass

Amount

Preventive maintenance work of Scanner/TV cooling fans, Oil/Coal burner, Igniter guide pipes, BCP inlet/outlet valve and other associated equipment, keeping watch on abnormal sound of boiler first pass, second pass of pressure parts, attending coal dust leakage from Mill outlet Elbow to fuel inlet Elbow by applying sodium silicate & asbestos powder round the clock of boiler unit No. 4&5 of 2X500 MW, BTPS, Anpara

Preventive maintenance of all Flushing apparatus of economizer ash pan system, removal of chocking, their regular cleaning and disposal of ash in three shifts.

Removal of choking of interconnecting Ash/ slurry pipe from Ash Pan to central disposal pipe of Eco. Hopper Ash disposal system.

Servicing/ replacement of Plate Valve of Eco. Ash pan System.

Repairing of eroded section of Eco. Ash Pan System/ pipeline by removal of worn-out portion and providing patch of 6-10 mm thick M.S. Plate.

Servicing of Butterfly Valve/ Flushing water nozzles of Eco. Ash pan System.

Removal, disposal and cleaning of Ash/ Slurry, foreign materials accumulated due to overflow of Eco. Ash Disposal System from the Top of the Hot Secondary Interconnecting Duct of Boiler and cleaning the area by compressed air.

Removal, disposal and cleaning of Ash/ Slurry, foreign materials accumulated due to overflow of Eco. Ash Disposal System from the Complete Platform at Economizer Ash Hopper Area of Boiler and cleaning the area by compressed air.

Removal, disposal and cleaning of Ash/ Slurry, foreign materials accumulated due to overflow of Eco. Ash Disposal System from the Complete Platform below Economizer Ash Hopper. Area/ Duct across Guide bearing area of Sec. APH - A & B of Boiler and cleaning the area by compressed air.

System line up for filling of Feed water through Boiler Feed Pump for Hydraulic Test of Boiler, normalization of the same after Hydraulic Test and making the System ready for Boiler Light up.

Replacement of Ash Disposal drain line of Dia. 200-320 mm of Economizer Ash disposal system by cutting & removal of damaged pipes and fitting and Welding of repaired /new pipes by suitable welding electrode.

De-scaling of Pressure Parts & removal of soot from heating surface of Boiler by steam blowing through Wall Blowers/Long Retractable Soot Blowers (LRSB) from local/UCB Panel.

Complete servicing/revisioning of Jam Long Retractable Soot Blowers (LRSB) for their smooth operation.

Complete servicing/revisioning of Jam Wall Blowers for their smooth operation.

Complete servicing/revisioning of head valve assembly of Wall Blowers/LRSB.

Replacement of Flange Gasket of head valve Assembly of Wall Blowers/LRSB & orifices of Soot Blowing System.

Servicing of Gear Boxes of Rotary/Traverse motion of LRSB.

Servicing of Gear Boxes of Rotary/Traverse motion of Wall Blowers.

Repairing/replacement of damaged Trip rod cover plate/Trip rod by proper grinding & welding with suitable cast iron welding electrode.

Fabrication of metallic washer from 2-3 mm M.S. Plate for carriage housing.

Servicing/Replacement of Chain of LRSB by providing chain lock or adding cutting the chain to a suitable length for smooth traveling of the equipment.

Servicing of carriage housing of LRSB.

Replacement of Gland packing to arrest steam leakage from LRSB Lance Tube/ Wall Blower Swivel Tube Assembly.

Replacement of damaged Lance Tube of LRSB/ Swivel Tube of Wall Blowers.

Straightening of bend Lance Tube of LRSB/ Swivel Tube of Wall Blowers.

Repair/rectification of water wall tubes in Boiler furnace from Boiler bottom header to 70mtr. Elevation excluding burner zone when work involves 1 to 10 joints.

Repair/rectification of water wall tubes in Boiler furnace from Boiler bottom header to 70mtr. Elevation excluding burner zone. When the work involves above 10 joints.

Repair/rectification of water wall tubes in Boiler furnace in burner Zone between 23mtr. To 35mtr. Elevation When the work involves 1 to 10 joints.

Repair/rectification of water wall tubes in Boiler furnace in burner Zone between 23mtr. To 35mtr. Elevation When the work involves the number of joints above 10 joints.

Repair/rectification of pressure parts rear water wall screen tubes, back pass super heater screen tubes, extended bottom, and rear arch tubes zones in boiler When the work involves 1 to 10 joints.

Repair/rectification of pressure parts rear water wall screen tubes, back pass super heater screen tubes, extended bottom, and rear arch tubes zones in boiler When the work involves the number of joints above 10 joints.

Repair/rectification of pressure parts tubes ceiling super heater tubes situated at furnace top (Roof wall tubes), secondary super heater tubes tertiary super heater tubes, primary re-heater tubes zones in boiler When the work involves 1 to 10 joints.

Repair/rectification of pressure parts tubes ceiling super heater tubes situated at furnace top (Roof wall tubes), secondary super heater tubes tertiary super heater tubes, primary re-heater tubes zones in boiler When the work involves the number of joints above 10 joints.

Repair/rectification of pressure parts zones and ceiling super heaters associated with secondary re- heater tubes, tertiary re- heater tubes, water wall hanger tubes and final super heater tubes in boiler When the work involves 1 to 10 joints.

Repair/rectification of pressure parts zones and ceiling super heaters associated with secondary re- heater tubes, tertiary re- heater tubes, water wall hanger tubes and final super heater tubes in boiler When the work involves the number of joints above 10 joints.

Repair/rectification of spacer tubes, binder tubes, drain and vent tubes of super heater and re- heater When the work involves 1 to 10 joints.

Repair/rectification of spacer tubes, binder tubes, drain and vent tubes of super heater and re- heater When the work involves the number of joints above 10 joints.

Repair/rectification due to crack, pinhole and dents in water wall steam cooled wall, super heater/re-heater attachments, drain line roof or any other pressure parts tubes of boiler.

Build- up of eroded portion of pressure parts tubes caused by ash/steam erosion using suitable welding electrode matching with parent metal composition by Arc/Argon welding of 250mm length, 35mm width.

Repair/rectification of hand hole plate, Gamma plug of pressure parts headers by removing hand hole plate by hand hole plate cutting machine if required welding of hand hole plate after complete preparation and stress relieving of the same after welding as per IBR.

Fixing of sky climbers in boiler furnace after making proper platform of bottom ash hopper, its operation during execution of work and dismantling and removal along with bottom ash hopper platform after completion of pressure parts work.

Shifting of sky climber in boiler furnace at different locations for attending and inspection of various pressure parts zones.

Cutting and removal of skin casing/high crown plate by grinder and welding the same with suitable electrodes by high pressure welding method, after completion of repair jobs of pressure parts if any. Thickness of plate 8mm

Cutting and removal of skin casing/high crown plate by grinder and welding the same with suitable electrodes by high pressure welding method, after completion of repair jobs of pressure parts if any. Thickness of plate 16mm

Rectification/replacement of damaged "U" clamps of different zones of pressure parts of boiler.

Rectification/replacement of damaged scalloped bars of different zones of pressure parts of boiler

Rectification/replacement of damaged Binder, support band, lugs of different zones of pressure parts of boiler.

Rectification/replacement of damaged Flexible connector (male/female) of different zones of pressure parts of boiler.

Rectification/replacement of Tubular (half round) protector found damaged/eroded/distorted or providing new protectors in the secondary super heater, tertiary super heater and secondary re-heater and their spacer tube. Protector/shielding shall be rectified/installed with the help of sky climber.

Rectification/replacement of Box type protector /cassette baffle found damaged/eroded/distorted or providing new protectors in the secondary & tertiary super heater and secondary re-heater. Protector/shielding shall be rectified/installed with the help of sky climber.

Rectification/replacement of Tubular protector/shielding found damaged/eroded/distorted or providing new protectors in the water wall hanger tube, tertiary re-heater, final superheater, water wall & super heater screen tube, primary super heater vertical and horizontal, economizer coil. For installation of protectors necessary scaffolding must be made by the agency.

Rectification/replacement of Box type protector/cassette baffles found damaged/eroded/distorted or providing new protectors in the tertiary re-heater, final super heater, water wall & super heater screen tubes, primary super heater vertical and horizontal, economizer coil for installation of protectors necessary scaffolding must be made by the agency.

Fabrication of hot bends of various degrees and radius of filling sand and uniform heating by heating torch to required temperature of Carbon steel.

Fabrication of hot bends of various degrees and radius of filling sand and uniform heating by heating torch to required temperature of Alloy steel.

Stress relieving of tube/header joints of thickness 12mm and above of pressure part tube/headers.

Fin welding of water wall tubes, steam cooled wall tube rear wall tubes by high pressure welding.

Erection of scaffolding and making approaches for checking of pressure parts tubes and rectification of defects if any, in the Spacer tube of secondary/tertiary re-heater/final superheater coils at left and right side and their dismantling after completion of work.

Erection of scaffolding and making approaches for checking of pressure parts tubes and rectification of defects if any, in the Spacer tube of tertiary re-heater coils from left to right side throughout the width of boiler and their dismantling after completion of work.

Erection of scaffolding and making approaches for checking of pressure parts tubes and rectification of defects if any, in the Spacer tube of secondary re-heater coils from left to right side throughout the width of boiler and their dismantling after completion of work.

Erection of scaffolding and making approaches for checking of pressure parts tubes and rectification of defects if any, in the Spacer tube of tertiary superheater coils from left to right side throughout the width of boiler and their dismantling after completion of work.

Erection of scaffolding and making approaches for checking of pressure parts tubes and rectification of defects if any, in the Spacer tube of final superheater coils from left to right side throughout the width of boiler and their dismantling after completion of work.

Erection of scaffolding and making approaches for checking of pressure parts tubes and rectification of defects if any, in the Tertiary superheater/Secondary re-heater tertiary re-heater/final superheater coils at left and right side in single layer up to roof and their dismantling after completion of work.

Erection of scaffolding and making approaches for checking of pressure parts tubes and rectification of defects if any, in the Tertiary super heater/Secondary re-heater/tertiary re-heater/final superheater coils from left to right side throughout the width of boiler in single layer and their dismantling after completion of work.

Installation and commissioning of Fabric Compensator on Expansion bellow of Installation and commissioning of Fabric Compensator on Expansion bellow of Primary APH Inlet Distribution Damper of Flue gas Duct.

Installation and commissioning of Fabric Compensator on Expansion bellow of Installation and commissioning of Fabric Compensator on Expansion bellow of Secondary APH Inlet Distribution Damper of Flue gas Duct.

Operation and running maintenance of flue conditioning system of ESP.

Break Down maintenance of Flue Gas Conditioning system by Attending leakage of welding Joint up to 25 NB

Break Down maintenance of Flue Gas Conditioning system by Attending leakage of welding Joint 26 to 40 NB

Break Down maintenance of Flue Gas Conditioning system by Attending leakage of welding Joint 40 to 100 NB

Break Down maintenance of Flue Gas Conditioning system by Replacement of Needle Valve of 15 mm

Break Down maintenance of Flue Gas Conditioning system by Servicing/ replacement of Valve of 15 to 40 mm

Break Down maintenance of Flue Gas Conditioning system by Servicing/ replacement of Valve/NRV of 40 to 100 mm

Break Down maintenance of Flue Gas Conditioning system by Cleaning/replacement and refixing of Nozzle Fitting

Break Down maintenance of Flue Gas Conditioning system by Replacement of Seal Plate

Break Down maintenance of Flue Gas Conditioning system by Replacement of Bend & 'T'

Complete replacement of old & used economizer ash pan assembly by repaired/new assembly.

Fabrication of economizer ash pan body, liners and bends as required at site for complete assembly of ash pan system.

Fabrication, Erection, commissioning, and alignment of one no. chute "0" meter to "70" meter of Boiler

TECHNO HITECH PVT. LTD.

TIRANGA CONSTRUCTION