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| 1 | Maintenance of Boiler pressure parts Unit 2 |
| 2 | ECONOMISER TUBE JOINTTube OD 51 mm, Thickness 4.8 mm, Material: SA 210 GR.C orequivalent |
| 3 | INSERT AT FURNACE WALL, GOOSE NECKS-PANNEL & ROOF TUBE (1 insert = 02 nos. joint) Tube OD:63.5 mm TO 69.9 mm, Thickness from 5.1 to 6.3 mm, Material:SA 210 GR. A or equivalent |
| 4 | JOINT AT SATURATED SCREENROOF & SIDE WALL, SCREEN TUBE, PRIMARYSUPERHEATER TUBE, SECONDARY SUPERHEATER TUBE.(OD: 63.5 mm, Thickness: 5 mm upto 6.9 mm, Material:SA213T11 OR EQUIVALNT) |
| 5 | JOINT AT REHEATER TUBE/INSERT AT FURNACE WALL, GOOSE NECK, S-PANEL &ROOF TUBE. |
| 6 | Second pass scaffolding |
| 7 | Economiser coil liftingrepairing,fitting & jointing with proper alignment for unit2 (ifrequired for preventive checking beyond leakage area) |
| 8 | Primary & secondary superheater coilpulling, inspection and proper alignment of coil & panelwith clit and support welding of unit2 (if checkingrequired for preventive inspection) |
| 9 | Maintenance of Boiler Pressure Parts Unit 5 |
| 10 | LP water CleaningEconomizer Zone, PSH & PRH |
| 11 | Joint for lnsertion of water wall tube,cage rear wall below main cavity & baffle wall tube below maincavity,Size: 63.5X5.4, Mat: BS3059/45S2 or 5A210Gr.C. |
| 12 | Insertion joint for division wall tubeSize: 82.5X7, Mat: BS3059/45S2; or SA210Gr.C |
| 13 | Joint for lnsertion of furnace roof,cage rear wall & baffle wall tube above main cavity, Size:63.5X4.8, Mat: BS3059/620S2 or SA213T11 |
| 14 | Joint for Insertion of economiser tubeSize: 38.1X3.6, Mat: BS3O59/45S2 or SA210Gr.C |
| 15 | Insertion joint of PSH bottom & middleSize:57.1X6, Mat: BS3059/620S2 or SA213T11 |
| 16 | Joint for Insertion of PSH top bank tubetube, Size: 63.5X3.6, Mat: BS3059/33S2 orSA210Gr.C |
| 17 | Insertion joint of PRH bottom & middleSize: 57X3.2, Mat: BS3059/620S2 or SA213T11 |
| 18 | Joint for lnsertion of PRH top bank tubeSize: 57X3.2, Mat: BS3059/620S2 or SA213T11 |
| 19 | Joint for lnsertion of PLSH and FSHinlet tube, Size: 44.5X7, Mat: SA213T22 |
| 20 | Joint for lnsertion of FSH & FRH tubeSize: 50.8X3.6, Mat: SA213T91 |
| 21 | Economiser/PSH/PRH coil lifting,inspection repairing and fitting with proper alignment (if requiredfor preventive inspection beyond the leakage area) |
| 22 | Platen SH, FSH, FRH coil pullinginspection and proper alignment of coil and panel with clit andsupport welding |
| 23 | Second pass scaffolding Per 6 Meter |
| 24 | Servising of Wall blower |
| 25 | Common work for Unit 2 & Unit 5 |
| 26 | Stress Relieving |
| 27 | Radiography |
| 28 | Removal and refitting of refractory |
| 29 | Replacement of high pressure valve size upto 2\"\" |
| 30 | Replacement of high pressure line(1/2\"\" to 4\"\") (Unit of 01 \"Number\" includes two joints) |
| 31 | Deinsulation & insulation with claddingof wall, casing and pipe and other area of boiler |
| 32 | HP Valve Welding from 50 NB upto 100 NBpipe |
| 33 | HP valve gland packing replacementupto 6\" |
| 34 | HP valve servicingincluding gland packing & bonnet seal replacement upto 4\" |
| 35 | D-metering of boiler tubeat any area of boiler for thickness measurement (minimum survey150 nos./day) |
| 36 | Minimum mobilization chargeif total executed job value less than Rs.15000.00 |
| 37 | Vertical scaffoldingfor approaching Roof Tube/ Reheater/ Secondary SH (Per 6 MeterVertical) for Stage I & for approaching Furnace/ Roof Tube/Pendent Reheater/ Platen/FSH & Division wall (Per 6 MeterVertical) for Stage II |
| 38 | Horizontal scaffolding for approaching Platen SH/SCW/ Roof Tubes/Furnace (Per 6Meter horizontal) for Stage I & for approaching RH/ platen SH /Final SH / Divisional wall/SCW/ Roof Tubes/ Furnace (per 6 meter horizontal)for Stage II |
| 39 | Guard Tube and Guard PlateRemoval, Fabrication and Fitting |
| 40 | Build up in eroded Tubesas per requirement |
| 41 | Repairing of skin casing |
| 42 | Fabrication of bends of any degree of any boiler tube |
| 43 | Fitting and welding of tube attachment wherever require |
| 44 | Membrane strip fitting & welding |
| 45 | Fabrication and erection of Steel itemsby MS plate/ MS Angle/ MS channel/ I Beam etc. |
| 46 | Boiler metal temp TC & mounting replace |
| 47 | Thermowell replacement in HP line |
