TTPS MII Circle Boiler Maintenance Division Attending Breakdown works in ID Fans APHs of Unit IV V

Charges for cleaning ash deposit from the impeller and inside casing and checking the blades, in one ID Fan.

Charges for arresting water/oil leakages in the lub oil cooler provided in the ID fan.

Charges for checking of water leakages and arresting, checking of oil rings and renewing the same with new one if necessary in ID fan bearing housing.

Charges for arresting oil leakages in main drive system in APH by changing oil seal and commissioning.

Alignment of APH drive motor with speed reducer through fluid coupling.

Overhauling of APH lub oil pumps and valves for Support bearing and guide bearing. This work includes Dismantling, cleaning, Inspection of bearings, Gears, internals and replacement of the same if required then reassembling and alignment works etc

Removal and relaying of insulation in ID Fan, APH, ESP, wind box, and their ducts etc., including scaffolding charges.

Charges for transporting of 6 mm M.S./ Chequred plates from Central Stores to Boiler area, cutting into required size, leading, lifting, positioning on the eroded portions of above 1.5 meter side wall portion of the duct/platforms and welding the same.

Charges for removing the existing eroded duct supports, supports in Boiler Area and transporting of new pipes/angles/channels from Central Stores, cutting into required size leading lifting, positioning and welding.

Charges for renewal of sector plate adjuster rod assembly (or) Connecting plate of axial seal plate to sector plate at hot (or) cold ends (or) Repairing of defective APH soot blowers (or)Renewal of Air Motor (or) Inspection and correction of radial seals & removal of foreign materials from the rotor.

Charges for checking of any oil leak from APH guide bearing, support bearing, & ID Fan lub oil system, cleaning and removing of fire hazardous materials such as oil soaked cotton wastes, wooden pieces, coal powder from APH Bearing areas & ID Fan lub oil system areas in one unit including charges for T&P’s and consumables

Charges for cleaning the ash from Airpreheater hoppers and duct portion and disposals including cost of consumables such as gunny bags etc.

Charges for dynamic balancing of ID fans by putting trial weight checking and observing the vibration readings up to normal operating condition including preparing various range of weight and welding / removing in the impeller including charges for T&P’s and consumables.