TTPS Operation Circle MPM I Unit II Replacement of eroded Coal pipe lines, bends and fittings between Mills D, E and F and Boiler during 2021-2022 annual overhaul

Charges for loading and unloading the coal pipe (457 x 12.7mm) assembly, bends and transporting the coal pipe bends in trolley from stores to work site area including transport.

Charges for arresting the coal pipe firmly, dismantling victaulic coupling and lowering down the mill outlet elbows to 4.5 m. floor including charges for scaffolding.

Charges for inspection of mill outlet elbows and changing the deflector block if any lifting the elbows and assembling with proper alignment with the existing pipe line and removing coal pipe supports and devolution of scraps to stores.

Cutting the worn out pipes of varied length, grinding edges and welding with coal pipe collars in the respective area inclusive of cutting the new coal pipe of same length and devolution of scraps to stores. (Vertical portion)

Charges for removing the existing damaged hanger support assembly arrangements in the coal pipes for Assembly.

Rectification of hanger support rod fixture eye, strengthening the pin and its nuts for Assembly.

Charges for re fixing the hanger supports arrangements in its original position of the coal pipes without changing its elevation for Assembly.

Cutting of 10mm thick patches of various sizes and prepare the patches to suit the eroded portions of coal bends, inner Cone assembly and welding these patches including devolution of scraps to stores as per the direction of the engineer in charge.

Charges for arresting the coal pipe firmly, dismantling the eroded ceralin (Less than 90°) or MS bend by gas cutting, lowering the bends to the respective floor, assembling the new bend by welding after setting alignment and removing all coal pipe supports including charges for scaffolding.

Charges for arresting the coal pipe firmly, dismantling the victaulic coupling of 1 mtr length coal pipe, removing the eroded / damaged coal pipes and lowering the pipe to 0 mtr level including devolution the eroded coal pipe to central stores.

Charges for lifting the coal pipe and assembling in proper position with the existing coal pipe line and removing coal pipe temporary supports and devolution of scraps to stores.

Charges for removal of orifice 1 No. after dismantling the victaulic coupling, inspecting and inverting the same orifice or new orifice and assembling in position.

DURAIMANI ENGINEERING CONTRACTOR