NCTPS II 2 X 600 MW M I Circle BM Division Unit II Annual overhaul of ESP A B passes

Amount

Charges for complete inspection of ESP collecting electrodes, emitting electrodes, ‘U’ guide, shock bar, shock bar angle and its guide, hanging structures, frames of collecting & emitting electrodes and aligning the collecting & emitting electrodes to designed span, Cleaning of all support insulators with C.R.C and attending minor repair works including consumables and T&P’s.

Charges for opening of all CERM & EERM inspection & manhole doors and ESP hopper manhole doors for water washing of ESP internals. Complete water washing of ESP field internals and secondary screen sheets. Closing of all inspection & manhole doors after completion of overhaul works with proper packing ropes including consumable and T&P’s.

Charges for inspection of complete Collecting Electrode Rapping Mechanism such as shafts, inner & outer arms, plain bearings, rapping & non-rapping side shock bar guide plates, shock bar pads, sleeve tubes, set rings, CERM couplings & its clutches, renewal of gear box oil and attending tack welding & bolting., including consumables and T&P’s.

Charges for inspection of complete Emitting Electrode Rapping Mechanism (EERM) such as vertical and horizontal shafts, pin wheel arrangements, plain bearings, thrust/split bush bearings, inner & outer arms, shock bar frames, sleeve tubes, set rings, EERM grip couplings and attending minor tack welding, bolting, etc., cleaning of shaft insulator with C.T.C., renewal of gear box oil including consumables and T&P’s.

Charges for reconditioning the existing damaged Collecting Plate/ Electrode and fixing with line in proper manner as per the direction of Engineer incharge including consumables and T&P’s.

Charges for renewal of wornout collecting electrode shock bar by cutting & removal of existing wornout shock bar and replaced. Fixing of new shock bar with collecting electrodes then bolting & tag welding and aligning with span within the norms including store drawl & devolution charges, consumables and T&P’s.

Charges for reconditioning of defective/bent shock bar/pad by cutting & removal of bolts & nuts and releasing of existing defective shock bar. Reconditioning of defective shock bar by removal of bent/straighten by torch heating and refixing to its original position then bolting & tac welding properly. Aligning the collecting electrodes with original span within the norms including consumables and T&P’s.

Charges for renewal of wornout shock bar pad by cutting & removal of wornout shock bar pad and replaced by a new one then bolting with shock bar assembly & tack welding including consumables and T&P's.

Charges for renewal of wornout plain bearings by cutting & removal of wornout plain bearings in CERM/EERM shaft and fixing of new/reconditioned one then aligning, bolting and tack welding including consumables and T&P’s.

Charges for renewal of CERM/EERM wornout inner/outer arm by cutting & removal of wornout inner/outer arm in CERM/EERM shaft and fixing of new one then aligning, bolting and tack welding including consumables and T&P’s.

Charges for renewal of wornout/elongated emitting electrode from its frame and fixing of new one using stretching tools including consumables and T&P’s.

Charges for renewal of CERM/ EERM gear box from its position, removal of coupling from the gear box output shaft, dismantle the end cover and replacing the worn out oil seal, reassembling and refixing of end cover to normalise consumables and T&P’s.

Charges for renewal of support/shaft insulator by locking/arresting of field frame/shaft, releasing of its lock nut & defective support/shaft insulator. Fixing of new support/shaft insulator, bolting, releasing of field frame/shaft from arresting and aligning as per the norms including consumables and T&P's.

Charges for reconditioning of defective/bent shock bar guide plate rapping/non-rapping side by releasing of existing defective/bent shock bar guide plates one at a time. Reconditioning of defective shock bar guide plates by removal of bent & straightend by torch heating, refixing to its original position, postioning and then tac weld properly. Aligning the collecting electrodes with original span within the norms including consumables and T&P’s.

Charges for renewal of wornout CERM shaft by dismantling of plain bearings, inner & outer arm from CERM Shaft and cutting & removal of existing wornout shaft from its position. Fixing and positioning of new shaft, refixing of released plain bearings, inner & outer arm hammers with new shaft then bolting & tack welding and aligning with span within the norms including consumables and T&P’s.

Charges for welding of eroded and weaken welding joints in ESP internal structural frames & ESP hoppers above from 9 Mtrs elevation in hopper using E.7018 overcord/super bond welding rod. This work involves complete inspection of welding joints in collecting & emitting electrode structural frames, ESP inner casing wall and welding of eroded weaken joints (by metal filling) as directed by the Engineer in charge including consumables and T&P's.

Charges for erection of scaffoldings and providing necessary working platforms at various locations inside the ESP hoppers:This work involves providing necessary scaffoldings and platforms in various locations inside the ESP hoppers to carryout the rectification work as directed by the engineer in charge.

Charges for fabrication and erection of new MS plates (Angle, Stiffener) for additional supports, suporting angle, stiffener to ESP field hoppers as per the required shape and size and direction of site Engineer, including cost of T&P’s and consumables.

Supply of various sizes of structural material like Angle and Channel. (If the materials are available in NCTPS Store at time of work execution, it will be supplied by TANGEDCO at free of cost and it will be excluded from contractor’s scope). M.S. Angle Size : 75 x 75 x 6mm

Supply of various sizes of structural material like Angle and Channel. (If the materials are available in NCTPS Store at time of work execution, it will be supplied by TANGEDCO at free of cost and it will be excluded from contractor’s scope). M.S. Channel Size : 100 x 50 x 6mm

NITISH ENGINEERING (BID ID -1070163)