NCTPS I SE MI circle BM Dn Unit II and III Boiler Flue Gas Duct B Pass Renewal rectification of flue gas duct portions from APH Outlet to before Mechanical hopper area during Annual Overhaul for the year 2020 21

Amount

Schedule-A (Unit-II) Providing scaffolding arrangement for renewal/ rectification works in flue gas duct portions at B pass side from APH outlet to before mechanical hopper area, including cost of consumables and T&P’s.

Complete dismantling of damaged portion of flue gas duct portions at B pass side from APH outlet to before mechanical hopper area. This work involves arresting, cutting, leading and removal of eroded duct plates in the form of single/ multilayer and devolution of scraps to stores, including cost of consumables and T&P’s.

Charges for transporting of 6mm M.S./ Chequered plates from Central Stores/NCTPS to Boiler area, cutting into required size, leading, lifting, positioning on the eroded top portions of the duct above 1.5 meter level and welding the same from APH outlet to before mechanical hopper area, including cost of iron & steel materials, consumables and T&P’s.

Removal of wear resistance plate for patch up the eroded intricate portion and re fixing the same after completing the patch up, including cost of consumables and T&P’s.

Labour charges for welding eroded initial welding joints in the flue gas duct at B pass side from APH outlet to before mechanical hopper area, including cost of consumables and T&P’s.

Charges for providing of frames and doors for the flue gas duct, including cost of consumables and T&P’s.

Cleaning the accumulated ash inside of the flue gas ducts by opening the man hole doors and cleaning the ducts, collecting the accumulated ash in the Gunny bags, bringing to “0” meter at B pass side from APH outlet to before mechanical hopper area, including cost of consumables and T&P’s.

Schedule-B (Unit-III) Providing scaffolding arrangement for renewal/ rectification works in flue gas duct portions at B pass side from APH outlet to before mechanical hopper area, including cost of consumables and T&P’s.

Complete dismantling of damaged portion of flue gas duct portions at B pass side from APH outlet to before mechanical hopper area. This work involves arresting, cutting, leading and removal of eroded duct plates in the form of single/ multilayer and devolution of scraps to stores, including cost of consumables and T&P’s.

Charges for transporting of 6mm M.S./ Chequered plates from Central Stores/NCTPS to Boiler area, cutting into required size, leading, lifting, positioning on the eroded top portions of the duct above 1.5 meter level and welding the same from APH outlet to before mechanical hopper area, including cost of iron & steel materials, consumables and T&P’s .

Removal of wear resistance plate for patch up the eroded intricate portion and re fixing the same after completing the patch up, including cost of consumables and T&P’s.

Labour charges for welding eroded initial welding joints in the flue gas duct at B pass side from APH outlet to before mechanical hopper area, including cost of consumables and T&P’s.

Charges for providing of frames and doors for the flue gas duct, including cost of consumables and T&P’s.

Cleaning the accumulated ash inside of the flue gas ducts by opening the man hole doors and cleaning the ducts, collecting the accumulated ash in the Gunny bags, bringing to “0” meter at B pass side from APH outlet to before mechanical hopper area, including cost of consumables and T&P’s.

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