TTPS Mech II BM Unit I Overhaul 2020 21 Removal of ash accumulated over the mechanical dust collector path A B C D and ID fan A B suction side ducts and welding the eroded weld joints in the mechanical dust collector path A B C D

Charges for opening the manhole doors of one mechanical dust collector path & one ID fan suction side duct, making two openings in the mechanical dust collector path, removing the bottom plates, removal of the ash accumulated in the above paths by using gunny bags, lowering the gunny bags to the ground level and disposing the ash in the slurry trench and washing it with water and covering the openings in the mechanical dust collector path with new M.S plates & closing the man hole doors after completion of works.

Charges for removal of the ash accumulated below and around ID, FD and PA Fans floor Area and in airpreheater A&B guide bearing area including cost of consumables.

Charges for welding the eroded weld joints in the mechanical dust collector path A, B, C & D and ID fan suction duct A & B including consumables like welding electrodes, hand gloves, welding machine and T&P’s (for a minimum thickness of 6 mm weld metals).

Overhauling of air and flue gas dampers (GD12, GD13, GD22, GD23, GD24, GD25, AD3,AD4,AD5, AD6, AD7, AD17, AD18, AD155 & AD156) gear boxes and actuators in Unit I ‘A&B’ pass including, consumables and T&P charges

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