Breakdown maintenance work of furnace bottom ash disposal system of unit no 4 and 5 2X500MW BTPS Anpara

Amount

Complete servicing of Ash Gate hydraulic cylinder with connected oil actuator and oil supply lines.

Cutting of elongated chain link, refitting of chain links and successful trial Run of SSC.

Dismantling and replacement /reversing and refitting of flight bar with new / workable/repaired flight bar & successful trial run of SSC.

Straightening of bent &distorted flight bars with the help of heating torch and hydraulic jack.

Remounting of SSC chain in case of dislocation of chain from sprocket Head end snub shaft /bottom/top trough /tail end rollers and its successful trial run.

Repairing & re-strengthening by welding on different sizes of pipes, ash Hopper casing, SSC body etc. double coat (run) with suitable welding.

Replacement/servicing of bearing of clinker grinder after removing Bearing housing &cleaning of grease &re-grease.

Replacement/servicing of bearing of Head end shaft assembly and alignment if required & successful trial run.

Replacement/servicing of bearing of head end snub shaft/bottom trough shaft//tail end shaft, alignment of rollers and successful trial run.

Complete servicing of hydraulic chain tensioning unit including cleaning oil replacement of reservoir, seals replacement on hydraulic rams of Chain tensioner, servicing of pressure relieve valves etc. and its successful trial run.

Replacement of Hydraulic cylinder of chain tensioning unit . It includes a) Disconnection of oil supply pipe line. b) Replacement of defective cylinder with new/repaired one. c) Connection of oil supply lines & successful trial run.

Repairing/replacement of damaged oil pipe lines of hydraulic chain tensioning unit/ ash gate actuator by cutting it with grinder preparation of 'V' for welding & welding with suitable electrode.

Repairing/replacement of damaged oil pipe lines of hydraulic chain tensioning unit/ ash gate actuator by cutting it with grinder preparation of 'V' for welding & welding with suitable electrode.

Overhauling of Head shaft assembly /replacement of defective parts with new /old healthy parts.

Complete servicing /replacement of damaged parts of top trough stub shaft assy. Including cover plate.

Alignment of old chain/replacement of chain of SSC with new one It includes: (a) Removal of all flight bars. (b) Dismantling of all the chain connectors. (c)Taking out all the chain links. (d) Replacement by new /old repaired chain after alignment of chain links. (e) Fitting of chain connectors & flight bars on the replaced chain& its successful trial run.

Servicing/Replacement of hydraulic pump of clinker grinder and its successful. trial run.

Fabrication/Repairing of thrust washer of stub shaft roller assembly

Servicing/Repairing/Replacement of spidex insert / coupling of SSC, Clinker Grinder/Ash Gate.

Servicing/Replacement of oil pump of hopper ash gate & its successful trial run.

Servicing/Replacement of oil pump of SSC & its successful trial run.

Cleaning of seal trough of boiler.

Evacuation of SSC body in case of breakdown by taking out all the ash/ clinker manually.

Cleaning of inner & outer filters power pack system.

Servicing of hydraulic motor of clinker grinder & its successful trial run.

Replacement of oil seals of hydraulic motor of SSC & its successful trial run.

Repairing of damaged cast able refractory after chipping the damaged portion in furnace bottom ash hopper.

Repairing of rollers of top trough shaft, tail end shaft, idler shaft assy.

Repairing /servicing /replacement of quenching nozzle body.

Closing & opening of ash discharge gate of furnace bottom ash hopper manually.

Repairing /servicing of sight peep holes.

Cleaning/ Flushing of bottom ash hopper spray drain collecting pipe.

Servicing of valves of water line of FBAD system.

Repair. Of top trough shaft by welding and machining to finished surface.

Replacement of hydraulic motor of SSC. It includes (a) Transportation of new/repaired hyd. Motor from central/site to the job site. (b) Removal of old hyd. Motor of SSC after dismantling the bearing with housing. (c) Mounting of new hydraulic. Of SSC. d) Taking down the old hyd. Motor to the ground floor. (e) Filling of oil in the hyd. Motor. (f) shifting of old hyd. Motor to the site /central store. (g)Evacuation of ash from scrapper conveyor from its main hole & its successful trial run.

Removal of chocking of furnace bottom ash hopper.

Repairing/servicing/ replacement of rollers of snub/idler shaft of bottom trough & tail end shaft. It includes - (a) Removal of shaft from the SSC. (b) Removal of rollers from the shaft © Build up of worn out portion with the help of welding with suitable electrode. (d) Grinding/machining of the rollers to achieve smooth surface. (e) Refitting of the rollers on the shaft. (f) Refitting of the shaft on the SSC body.

Repairing /fabrication &erection of grating at the discharge of ash/clinker from the SSC to the clinker grinder.

Flushing of cooling pipe line for oil cooler and bush bearing of stub Shaft assly.

Repairing/fabrication &erection of liner plate near head end shaft /return idler shaft. It includes: (a) Cutting damaged liner plate. (b) Fabrication of liner plate of the required size. © Fixing of liner plate by welding with suitable electrode &its successful trial run.

Patch work on worn out portion of furnace bottom ash hopper, discharge chute of SSC body over the clinker grinder and clinker grinder chute.

Fixing of new tiles/Ms plate in place of worn out tiles over the mother plate of SSC. It includes (a) Provide scaffolding where ever required for removal of worn tiles. (b) Removal of tiles & its fixing material from the mother plate. © Grinding of mother plate for smooth surface. (d) Cutting of the tiles in the required shape with the help of diamond cutting machine (e) Fixing of new tiles and leveling them after applying fixing material over the mother plate & successful trial run of SSC.

Repairing /servicing/replacement of bearing housing & its assembly of top trough stub shaft assy. It includes (a) Removal of bearing housing assy. And its dismantling. (b) Build up of worn out portion with the help of suitable electrode. © Grinding/machining of the bearing housing assembly to achieve smooth surface and profile. (d) Refitting of bearing housing assy. with stub shaft and it successful trial run.

Repairing of drain collecting pipe assy. of furnace bottom ash hopper.

Servicing/Replacement of Hydraulic Motor (Model: CA 50) of Clinker grinder.

Replacement of old, used and worn out snub/tail end/idler shaft of SSC. It includes: (a) Dismantling of bearing pedestal/flange and bearing from either end of the shaft (b) Removal of rollers from either of the shaft after taking the shaft from its place. © Fixing of rollers with key at either end of new/repaired shaft. (d) Fixing of bearing and bearing pedestal/flange after alignment of the shaft at it a original place and successful trial run.

Replacement of old and clogged seeping water line to various aux. of FBAD system.

Cleaning of pipe line

Fabrication of the flange with the help of MS plate(40 mm NB)

Welding works of joining pipe to pipe for lying of pipe line per joint. (1) 50mm NB

Fabrication of bends with the help of cutting of pipe into desired section & its welding, (1) 50 mm NB

Erection of valves in the pipe line after revisioning of the valves (1) 40 mm NB

Fabrication of pipe support by welding the angle / channel and other Steel sections and its grouting as & when required.

Laying alignment of pipe line of size 150/100mm for different location

Painting of outer surface of pipe line with coat of primer and two coat of paint with approved color and quality of synthetic enamel. Paint after surface preparation.

Replacement /Repairing of Chain protection angle at bottom of both side wall of Top trough.

Replacement of the valves of water lines of FBAD system .It includes (a) Unscrewing of bolts of flange for removal of the valves. (b) Taking out the valves from the flange (c) Fixing of the new valves with new gasket & tightening of the bolts. (d) Charging of water at full pressure and checking for any leakage and rectification if any.

Replacement of water let nozzle of chain cleaning line.

Repairing/Fabrication &erection of eroded flap at the discharge of ash/clinker from the SSC to the clinker grinder.

Repairing of guide wheel protection box .

M/S PALAK CONSTRUCTION COMPANY

M/S SHALIMAR DECORATOR