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Overhauling Of Boiler Pressure Parts Of Unit 5 Btps- 1 Cleaning of furnace Zone, PLSH, FSH, FRHby HP water Jet. 2 Supply & errection of proper scaffoldingmaterials for furnace and other areas. Use of coir rope is strictly prevented inside Boiler. 3 Scaffolding of FSH,PLSH,FRH area uptoroof top 4 Sealing at top of bottom ash hopper bySteel planks, GI sheet and gunny bags 5 Pent house and dead chamber cleaning 6 Penthouse & dead chamber repairing 3mmMS plate welding 7 Overhauling of boiler drum 8 Insertion joint of tube Size: 63.5X5.4mm ;Mat: BS3059/45S2 orSA210Gr.C, including replacement of bend along with RT of joints 9 Insertion joint of tube Size: 82.5X7 mmInsertion joint of division wall tube, Size: 82.5X7, Mat:BS3059/45S2 or SA210Gr.C along with RT of Joints 10 Insertion joint of furnace roof , Size: 63.5X5.4, Mat:BS3059/620S2 or SA213T11 alongwith RT of joints. 11 Insertion joint of Bleed tube alongwithRT of joints. 12 Insertion joint of PLSH and FSH tube,Size: 44.5X7, Mat:SA213T22 including bend alongwith RT of Joints. 13 Insertion joint of FSH & FRH tube, Size: 50.8X3.6 mm, Mat:SA213T91 including bend alongwith RT of joints. 14 Insertion joint of PSH bottom bank tubeSize: 63.5X6.3, Mat:BS3059/45S2 or SA210Gr.C alonwith RT of Joints. 15 Insertion joint of PSH middle bank tubeSize: 63.5X8.8 mm, Mat:BS3059/45S2 or SA210Gr.C alongwith RT of joints. 16 Insertion joint of PSH top bank tube ,Size: 57.1X6, Mat:BS3059/620S2 or SA213T11 alongwith RT of joints alongwith RT of Joints 17 Insertion joint of Economiser tube 38.1 x 3.6 mm, Material BS 3059/45S2 along with RT of Joints. 18 Insertion joint of PRH bottom & Middlebank tube Size:63.5X3.6, Mat: BS3059/45S2 or SA210Gr.A1 alonwith RT of Joints. 19 Insertion joint of PRH top bank tube , Size:57X3.2, Mat:BS3059/620S2 or SA213T11 including RT of joints. 20 joint cage rear wall & baffle wall tube Insertion joint of cage rear wall & baffle wall tube above main cavity, Size: 63.5X4.8, Mat: BS3059/620S2 or SA213T11 21 Platen SH, Final SH, Primary RH additional loop & Final RH coil pulling ,inspection and proper alignment of coil and panel with clit and support welding (by SS bar and clamp) 22 D-metering of boiler tubes in all the high pressure zones of the boiler viz. platen SH, Final R/H, Final S/H, Screen and cage wall, furnace wall, roof tubes, PSH tube,PRH tube,Baffle wall, economiser tube etc. and in boiler 1st & 2nd pass (minimum 4500 points) 23 Radiography of Old and DMW joints 24 Stress relieving of welding joints as per WPS. 25 Inspection and servicing of buck stay Cleaning,Inspection and servicing of buck stay alongwith lubrication of hinge points and Steelwork (including T and channel connecting joint with tube) 26 Replacement of stub at different header 27 Skin casing welding by MS Electrode 28 Welding of membrane strip by HP weilder 29 Deposition of weld metal on tubes/stubs/ header etc. 30 Servicing and repairing or replacement or replacement of seal plate (net), dipper plate and trough seal boxand necessary scaffolding 31 Refractory work (manholes, peep hole, wall blower, burner quarl, goose neck to straight tube, as per requirement etc.) 32 Scaffolding of Economiser Zone,PSH & PRH and cleaning of same by LP water. Sealing of economiser hopper 33 Inspection and run welding of economizer Hoper , All bracing pipe inspection , changing as per requirement, guard angle fitting upto APH inlet damper 34 Removal and fitting of guard tube, guard plate. 35 Replacement of Economiser Coil 36 PSH/PRH coil lifting or pulling, inspection and fitting with proper alignment (including terminal joints 20and RT) 37 Fabrication of different sizes of bends 38 Insulation work (de-insulation and re-insulation) 39 Man hole/ peep hole door servicing. 40 Servicing of Wall Blower & LRSB 41 Replacement of HP valve, Size: 1/2 to 2” 42 Engagement of 1 nos. Safety v/v expert 43 Servicing of Valve size above 40 mm upto 80 mm 44 Servicing of Valve size above 80 mm upto 100 mm. 45 Servicing of Main steam Stop Valve 46 Servicing of Eco Inlet Isolating Valve 47 Servicing of Eco Inlet NRV 48 Servicing of Start-up vent Isolating valve. 49 Servicing of FCS Isolating valve 50 Main steam safety valve 75 mm 51 Drum safety valve 75 mm 52 Cold reheat safety valve 153 mm 53 Safety valve sheet cutting 54 Trivy test and Assistance to trivy test for Drum,SH,CRH&HRH safety valve 55 Servicing of MS Safety Valve escape pipe including rectification of hanger support 56 Arrangement of require crane/hydra with fuel and operator. 57 Replacement of high pressure line (1/2 to 4) (Unit of 01 Number includes two joints& maximum tube length: 6 meter.) 58 Main steam safety valve sheet cutting
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