Uttar Pradesh Rajya Vidyut Utpadan Nigam Limited-UPRVUNL has published Breakdown Maintenance Of Ball Mill Of Unit No 4 And 5, 2X500 Mw, Btps, Anpara. Submission Date for this Tender is 29-08-2022. Crushers Breakers and Grinders Tenders in anpara Uttar Pradesh. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Opening & closing of Man hole of |
| 2 | a) Conveyor tube |
| 3 | b) Hot air box |
| 4 | c) P.C. Chute |
| 5 | d) Primary hot air duct |
| 6 | e) Mill Drum |
| 7 | f) Manual hot air duct |
| 8 | Separation of steel balls from coal dust coming out due to emptying out of Mill |
| 9 | Replacement of liners bolt located inside the mill drum. |
| 10 | Repair / Replacement of |
| 11 | (a) Screen Plate |
| 12 | (b) Classifier Plate /Deflector Plate |
| 13 | Replacement of liner plate of ball mill drum and shifting of eroded liner plate to division site. |
| 14 | (a) Straight wave cylindrical liner. |
| 15 | (b) Oblique wave cylindrical liner. |
| 16 | (c) Conical liner ( Long & short) |
| 17 | (d) Inlet side liner/ boss liner (Inlet side liner with boss/ without boss) |
| 18 | Checking & cleaning of Girth Gear & Pinion Gear Teeth by Oil, Inside, Cleaning of its enclosure and its checking of back lash including its associated works. |
| 19 | Checking of the alignment of |
| 20 | a) Pinion & Main Reducer Shaft/ Coupling |
| 21 | b) Main Reducer & Main Mill Motor Shaft/Coupling. |
| 22 | c) Main Mill Motor & Aux. Reducer Shaft/Coupling. |
| 23 | d) Aux. Reducer & Inching Motor Shaft/ Coupling. |
| 24 | Placement of displaced chuck nut of |
| 25 | I. Pinion Bearing |
| 26 | II. Pinion Gear |
| 27 | Replacement of damaged chuck nut |
| 28 | (a) Pinion shaft Bearing DE Side |
| 29 | (b) Pinion shaft Bearing NDE Side |
| 30 | (c) Pinion Gear |
| 31 | Tightening of nuts & bolts of liner plates located inside the ball mill drum. |
| 32 | Checking of trunion and oil deflector and rectification of defect if any by opening top cover of main bearing and adjustment of oil deflector. |
| 33 | Replacement of roller bearings of pinion shaft. |
| 34 | (a) NDE side |
| 35 | (b) DE side |
| 36 | Checking of both bearings of pinion shaft and their grease replacement. |
| 37 | Replacement of bearings/ seals /covers etc. of low/high speed shafts of main / auxiliary reducer. |
| 38 | Alignment between the shafts of |
| 39 | (a) Pinion & main reducer. |
| 40 | (b) Main reducer & main motor. |
| 41 | (c) Main motor & auxiliary reducer. |
| 42 | (d) Auxiliary reducer & inching motor. |
| 43 | Replacement of screw conveyors. |
| 44 | (a) Tie Rod |
| 45 | (b) Out Board Bearing |
| 46 | (c) Screw Conveyor Assembly |
| 47 | (d) Alignment of screw conveyor out board bearing. |
| 48 | Welding/ repairing of screw conveyor at site. |
| 49 | (a) Tie Rod |
| 50 | (b) Hooks & Chain Links |
| 51 | (c) Helix/Ribbon |
| 52 | Welding of patch on Mixing box/ coal air inlet pipe/ hot air box/ purge air pipe etc. |
| 53 | (a) 100 mm X 100 mm (up to and below 100 mm X 100 mm) |
| 54 | (b) 200 mm X 200 mm (upto & below but more than 100 mm X 100 mm) |
| 55 | (c) 300 mm X 300 mm (upto & below but more than 200 mm X 200 mm) |
| 56 | Repairing of Cement Lining inside classifier, P.C. Chute & Trunion tube |
| 57 | Replacement of packing of Seal Air Box and Trunion Collar. |
| 58 | Removal of choking of |
| 59 | (a) Classifier |
| 60 | (b) Mixing Box |
| 61 | (c) Ball charging System |
| 62 | (d) Mill Seal Air Pipe and Seal Air Box. |
| 63 | Welding of Patch on classifier cone (300 mm X 250 mm) |
| 64 | Servicing of the classifier vane by complete dismantling of the assembly |
| 65 | Preparation and installation of backing material with the help of EPDM rubber 5 mm, 3 mm and 1.5 mm asbestos sheet for the installation of high chrome liners |
| 66 | (a) Cylindrical (Straight/Oblique wave) liners |
| 67 | (b) Conical (long/short) liners |
| 68 | (c) Inlet side (with/without) liners |
| 69 | Checking of tightness of the foundation bolts. |
| 70 | Removal of the Tie rod from Screw Conveyor assembly |
| 71 | PART - B |
| 72 | Work of replacement of removal shaft of screw conveyor of ball mill. |
| 73 | The work of dismantling of flap and shaft of the inlet air damper, repairing of worn out flap body and shaft and re-assembly of repaired flap body and shaft at its proper position of the ball mill. |
| 74 | The work of repairing of worn out flap body and shaft of bypass air damper and re-assembly of repaired flap body and shaft at its proper position of the ball mill. |
| 75 | The work of fabrication & erection of platform and formation of manholes in side wall of hot air bypass air damper in milling system. |
| 76 | The work of repairing of Removal shaft of Screw conveyor. |
| 77 | Replacement of P.F. outlet and Purge air pipe of Ball Mills. |
| 78 | PART - C |
| 79 | Fabrication and installation of the mixing box with the help of 8/10/12 mm Sailma Steel Plate after removal of the old and worn out portion of the mixing box of the Ball Mill of 2X500MW, BTPS, Anpara |
| 80 | Fabrication & installation of the reducer pipe installed in the centre pipe of the ball mill with the help of 8/10/12 mm Sailma Steel Plate after removal of the old and worn out reducer pipe of the Ball Mill of 2X500MW, BTPS, Anpara. |
| 81 | Trunion Tube lining & liner works |
| 82 | Fabrication of the bottom liner (Half cylindrical) with 8/10/12mm Sailma steel plate for (one side) of trunion tube of ball mill. |
| 83 | The work of fabrication of the hot air tube lining with 8/10/12 mm Sailma steel plate (one side) of trunion tube of ball mill. |
| 84 | The work for removal of worn out Bottom Liner (Half Cylindrical) and fitting of New / Fabricated BottomLiner(HalfCylindrical)intheTrunion tube of Ball Mill (one side). |
| 85 | Theworkforremovaloftheoldandwornout Hot Air Tube Lining and fitting of new Hot Air Tube Lining (Approx.30-50%) in the trunion tube of Ball Mill (one side). |
| 86 | Repairing works of the worn-out screw conveyor of ball mills. |
| 87 | Reconditioning of collar of Mixing boxto restore its original condition to stop leakage of coal dust in the Ball Mill. |
| 88 | PART - D |
| 89 | Dismantling & Removal of existing Main/ Auxiliary Reducer Gear Box Assembly from Ball Mills. |
| 90 | Installation & Assembly of Main/ Auxiliary Reducer Gear Box to the Ball Mills. |
| 91 | Replacement of Couplings of Milling System. |
| 92 | Coupling between Girth Gear Pinion & Main Reducer Gear Box Assembly (Low speed coupling) of Ball Mill. |
| 93 | Coupling between Main Reducer Gear Box & Main Motor of Ball Mill. |
| 94 | Coupling between Auxiliary Reducer Gear Box & Main Motor of Ball Mill. |
| 95 | Coupling between Inching Motor & Auxiliary Reducer Gear Box of Ball Mill. |
| 96 | PART - E |
| 97 | Fixingof new helix ribbon onthe screw conveyor body of the ball mill after removing old eroded chain links, hooks, old ribbons etc. |
| 98 | Servicing and break down works of the coal gates of the coal bunkers of ball mills. |
| 99 | a. Servicing of coal gates of the coal bunkers of the ball mills |
| 100 | b. Repairing of sprocket of the coal gate shafts of ball mills. |
| 101 | c. Repairing of the rack of the coal gate of the ball mill. |
| 102 | Fabrication and installation of triangular portion of trunion tube of ball mill size 1800 mm x1000mmx1000mm. |
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