|
| 1 | PART-A:- Overhauling of Boiler Pressure Parts of Unit # 9, 2x250MW |
| 2 | Supply & erection of cup-lock scaffolding in 1st Pass and conventional scaffolding in 2nd Pass of 250MW Boiler (60 Days). (As per scope of work) |
| 3 | Water washing of Boiler (external and internal) and Jet cleaning of Boiler Pressure Part Tubes by HP jet pump & De-slugging of tubes of Boiler. (As per scope of work) |
| 4 | DP test for dissimilar joints, header stubs etc. of boiler tubes. (As per scope of work) |
| 5 | Rectification by replacement of defective tube and bend of boiler pressure part tubes. (Including survey, cutting & lifting/lowering of 30 Nos. module/hangers each of LTSH / Economizer & re-assembly of the same). (As per scope of work) |
| 6 | Fin welding of water wall & SCW tubes (single side welding of fin) |
| 7 | Repairing of furnace ceiling of Penthouse & doghouse. Refractory work in all the areas of boiler. ATT of boiler.(As per scope of work) |
| 8 | Providing SS heat shield in all the erosion prone area of 1st pass & 2nd pass of boiler. |
| 9 | Fabrication of tube bends |
| 10 | Alignment of all S/H, R/H coils and spacers tubes of re -heater and super –heater etc. |
| 11 | Pad welding on the boiler tubes.(As per scope of work) |
| 12 | Part-B (Overhauling of boiler drum, seal trough & soot blowers of Unit # 9, 2x250MW) |
| 13 | Replacement / Repairing of bracing pipe of duct dia. 50mm to 90mm installed in flue gas path up to ESP inlet (all four passes of ESP). |
| 14 | Overhauling of Boiler Drum of U # 9.(As per scope of work) |
| 15 | Complete servicing work of soot blower of Unit # 9 |
| 16 | Repairing of cassette baffle economizer / LTSH coil (As per scope of work) |
| 17 | Replacement of baffles plates (directing plates) between Air Pre-heater outlet to ESP inlet (all four passes of ESP). (As per scope of work). |
| 18 | Repairing of FG Duct up to ESP inlet (Just before Honeybee structure of ESP), baffles plates (directing plates), Economizer and APH hopper. Repairing of PA / SA duct. (As per scope of work). |
| 19 | Repairing of expansion joint between outlet damper of APH and EP inlet. |
| 20 | Overhauling of HP/safety valves |
| 21 | Optional Work :- |
| 22 | H.P. joints beyond 2700 Nos. |
| 23 | Fin welding beyond 400 RM. |
| 24 | Replacement of Economizer coil. |
| 25 | Replacement of LTSH coil. |
| 26 | Retention of scaffolding beyond 60 days. |
| 27 | Repairing of FG Duct beyond 300 Sq. M. |
