NCTPS II 2 X 600 MW MI Circle BM Unit I Boiler Annual Overhauling of Coal

Amount

Overhauling of burner tilting mechanism & components. A) Charges for removing inner and outer panel doors, reach rods, burner-tilting main mechanism components of outer area and inspection, cleaning & rectification of defects and alignment of burner tilting mechanism components, refixing of inner and outer panel doors. (Charges inclusive of consumables and T&P’s).

B) Charges for cutting the reach rods, inspection, cleaning rectification of defects and alignment of oil burner, coal burner and reassembling with proper lubricants and welding it with the reach rod, ovehauling of secondary air dampers (SAD) of respective compartments. (Charges inclusive of consumables and T&P’s).

Removal of existing worn-out coal compartment assembly including providing temporary scaffolding arrangement and chain block arrangement to facilitate to dismantle the worn out coal nozzle compartment assembly and removing of the front nozzle support to keep the coal compartment assembly free from all attachments of wind box and pulling out the coal compartment assembly by chain block and special tools etc,. (Charges inclusive of Consumables &T&P's).

Recondition of coal nozzles: Charges for reconditioning of coal nozzle including cleaning, removing of coal nozzle support wheel assembly, centre support bracket, coal nozzle top arrester plates assembly, tapping of threads at coal entry side end flange holes, tapping of threads in nozzle support stand wheel assembly holes and centre support bracket arresting base plate holes, tapping of threads in nozzle top arrester plates assembly seating face holes, metal filling in the worn out/ dented portion of divider plate and nozzle using suitable welding electrodes and other rectification works. Charges inclusive of special welding electrodes, general consumables and T&P's etc.,

Hard facing of coal nozzles:Charges for hard facing of coal nozzles entry inner surface upto 300 mm length in the above reconditioned nozzle. Charges inclusive of special type hard facing welding electrodes, T&P's and consumables, etc.,

Charges for leading of coal compartment assembly and lifting of coal compartment assembly from between 27 mtr to 42 mtr elevation by chain block, inserting the coal nozzle assembly inside the wind box, cutting / grinding of obstacle in the coal nozzle inserting path, positioning the coal compartment assembly in centered horizontal, checking and correcting of all pin and matching holes with 0.5mm clearance, checking, aligning and correcting of clearance between coal nozzle and seal plate and coal nozzle tip, centering of coal nozzle tip at least 10mm clearance all around in the coal compartment, fixing of coal nozzle front support after adjusting and positioning the coal compartment assembly in the compartment and reassembling of entire coal nozzle assembly in position with completely aligned and ready to operate condition, inculding temporary scaffolding arrangement and chain block arrangement and also including drawl of new / reconditioned coal nozzle tip from NCTPS II Stores and delouting the dismantled nozzle tip to Stores.

SHARTHI TECKMA CONTRACTS (BID ID -1085128)