MTPS I BM Unit I Boiler pressure parts AOH 2025 Overhauling of Secondary Air Dampers Scanner Air Fans and its damper flap gate etc

Amount

Rectification of defects in Secondary Air Dampers and cleaning of wind box.

Removal of insulation from top & bottom of the wind box and refixing after completion of rectification works

Charges for cleaning the accumulated ash deposits over the Wind box Top left & Right side. Inspection, rectification of eroded portions in wind box and assisting for air leak test. Charges for inspection and marking the flue gas/hot air leakage point in wind box and rear arch room area.

Charges for removing the eroded portions in wind box and welding with new plates inclusive of transportation, lead and lift, scaffolding arrangements, etc

Charges for dismantling of A.C/ D.C scanner air fan end cover plate, motor, impeller etc overhaul works and assembling the same fan and normalizing

Charges for dismantling and inspection of delivery side flap gate of scanner air fan for free operation and rectification defects if any and reassembling the same with new gasket

Over hauling of suction and delivery air dampers of scanner air fan by dismantling, cleaning, inspecting of operation and replacing the flange gasket.

Overhauling of emergency air damper of scanner air fan system by dismantling, cleaning, inspecting of power cylinder operation

Charges for leading, lifting and arranging platform and scaffolding wherever required in the boiler and dismantling after completion of work.

Charges for fabrication of new air damper, by sizing, bending of BMC 20 plate of 8/6mm thickness, 1” CS tube sizing, hinge plates, link plate, arresting plate etc., drilling and welding the arresting plate, hinge plate suitably as per the released sample. Required BMC 20 plate will be supplied by board at free of cost.

Charges for cutting, removal of worn out air dampers fixed & moving blades, shaft, preparing air compartment plates, shaft and damper blades, welding shaft with moving blade and making proper alignment and checking for free operation.

Dismantling the existing floor Grills:Charges for cutting tag weldment of floor Grills, dismantling, leading, lifting and stacking on the side of the floor at 24 m elevation.

Refixing of the released Floor GrillsLeading lifting of grills from the same floor erecting at 24 m level.

Charges for transporting the refractory from store and unloading at site, leading, lifting , stacking at 7m to 52m and removing the waste refractory from boiler lowering to the ground floor, loading to tipper and disposing at waste disposal area of MTPS-I

Charges for chipping removal of old defective refractory, cleaning, surface preparation, mixing the refractory with water application and curing the patch worked refractory in Boiler at various elevation

SUPER CASTABLE REFRACTORY ACE Fire crete (super)/ TATA refractories Service temp 14500C Al2O3 -70% ,Fe2O3 -2.5 to 5% SiO2 -11.5% Dry density minimum 2500 kg/m3 Grain size – maximum 5mm CCS /kg/cm2 at service temp 1450oc - 350 kg/cm2 with material/ manufacturer's test certificate

Light Resin Bonded wool Mattresses: Size 1.62 m X 1.22 m X 60mm thick confirming to IS8183,93. Density: 150 Kg/m3 , both sides 0.75 inch X 23 SWG G.I wire knitting with machinestitched and laid in HDPE - with material/manufacturer test certificate

Skin casing fixing screws

Cutting gas

MS welding electrodes

T & Ps and consumables

SSS ENTERPRISES (BID ID -1361304)