Overhauling Of U4 Ash Handling Plant Bktpp= 1 OH OF U#4 BA HOPPER AREA 2 Replacement/Repairing of Clinker Grinder ( With checking & repairing /replacement of feedsump/ feedsump adapter/ nozzle, combine tube, nozzle tip<(>,<)> nozzle holder etc. ) 3 OH of Feed Gate along with Feed Gate ( Accessories. ) 4 Servicing/Replacement of Hydroejector ( Along with Nozzle etc. ) 5 Replacement of BA Hopper looking glass/ ( Looking glass assembly including repairing of cooling line nozzle. ) 6 Servicing/Replacement of Knife Gate V/V ( (200NB/300NB) at economizer hopper & at discharge of Clinker Grinder. ) 7 Servicing/Replacement of 300NB ( 250NB Gate/Globe/Butterfly Valve. ) 8 Servicing/Replacement of 100NB/150NB/ ( 200NB Butterfly/Plug Valve/Gate/Globe Valve. ) 9 Servicing/Replacement of 15NB/25NB/50NB/ ( 65NB/80NB/32NB Gate/Globe/Butterfly Valve/Ball Valve. ) 10 Trough Seal, Economiser Hopper, Eco ( Seal Box (including repair/ replacement) & its drop pipes and BA Hopper checking & cleaning. ) 11 OH OF U#4 ESP AREA 12 Removal, physical inspection, refitting ( And replacement of ESP Fluidising Tiles including frame of fluidising tiles (if required). ) 13 Checking, removal, refitting, repairing/ ( replacement of adapter (ESP hoppers/APH hoppers/ Eco hoppers), MHV of ESP & APH Hopper for wet cleaning. Change of Seat/Disc of the valves as per condition. ) 14 Checking, Repairing/Replacement of ( 10inch/8inch TERSG V/Vs. ) 15 ESP Hopper inside checking, cleaning ( repairing (if required) and change of all manhole door packing for wet cleaning. ) 16 Flushing/Cleaning of fluidising air line ( including replacement of damaged pipe, and valves<(>,<)> ) 17 OH OF U#4 FA TOWER AREA 18 Bag Filter/Cage checking, Cleaning & all ( bag filter, ventury replacement with pulse jet bar checking and repairing, if required. ) 19 Checking, Repairing/Replacement of Dump ( Gate V/V of PCT and its seal including repair of PCT if required. ) 20 Checking, Repairing/Replacement of Vent ( equalising valve of PCT and ALV including change of short piece. ) 21 Physical inspection & repairing of ISH ( Including change of fluidizing tiles, checking and cleaning of fluidizing lines and servicing/ replacement of PRV. ) 22 Disposal of ISH ash through tractor ( To the ash dumping yard. ) 23 Checking, repairing/replacement of ALV ( RSV including fluidizing tiles and repairing/replacement of body pad and spool piece. ) 24 Repairing/Replaceemnt of Collector Tank ( Cylindrical and conical portion including checking & replacement of impingement plate. ) 25 OH of Wetting Head including checking & ( replacement of nozzle, inlet section, gaskets, tail piece, outlet section etc. ) 26 OH of Air Washer (Dry / Wet) including ( checking & replacement of nozzles, gaskets etc. or replacement of whole assembly ) 27 U#4 PIPELINE & FABRICATION JOB 28 Rotation/Replacement of 8 inch/10 inch ( CI/ MS pipe line including bend/lateral/tool piece & T-joint below ESP Hopper & up to FAE Tower, line alignment checking, repairing/erection of damaged support, gasket replacement etc. ) 29 Replacement of 200NB, 250NB, 300NB MS ( Pipe Line. ) 30 Replacement of 100NB, 125 NB, 150NB MS ( pipe line ) 31 Replacement of 8inch, 10inch DRC Pipe 32 Replacement of 15NB, 25NB, 32 NB,40NB, ( 50NB, 65NB, 80NB MS pipe lines. ) 33 Replacement of 10inch CI/DRC 34 Fabrication of 150NB,200NB,250NB MS bend 35 Fabrication of 32NB, 40NB, 50NB, 65NB, ( 80NB, 100NB MS bend ) 36 HIRING OF HYDRA (CAPACITY 14/20 T) 37 HIRING OF HYDRA (CAPACITY 14/20 T) ( i) Scope includes Operator & Fuel, lubricant etc. and Break down maintenance, if any. ii) The above service of Hydra to be provided throughout the OH period. ) 38 GST Extra as applicable
