NCTPS I SE MI circle Boiler Maintenance Division Annual Overhaul works for the year 24 25 Specification No 131 24 25

Amount

MS Plate 6 mm thick, Sail Hard / equivalent including Loading, transportation & Unloading. Manufacture test certificate shall be furnished. I-Material portion under Contractor scope: The contractor should inspect the site in overhaul to ascertain the actual requirement of Iron & Steel material and as per the direction of Engineer in charges) (The material will be supplied by TANGEDGO if available at stores during execution of works)

MS Channel 150 X 75 mm, Including Loading, transportation & Unloading. I-Material portion under Contractor scope: The contractor should inspect the site in overhaul to ascertain the actual requirement of Iron & Steel material and as per the direction of Engineer in charges) (The material will be supplied by TANGEDGO if available at stores during execution of works)

Providing scaffolding arrangement for renewal/ rectification works in FD,PA delivery to APH inlet duct 0 mtr to 16 mtr, PA hot air duct APH outlet to common duct (Before mill branch duct expansion joints) at above 18 mtr elevation and Cold air inter connection duct from near dynovan tapping man hole door area at 5 mtr elevation. Including cost of consumables and T&P’s.

Cutting and removal of heavily eroded duct plates (multilayer) in FD, PA delivery Duct, Hot and Cold air duct parent plate area. The work involves cleaning and clearing of accumulated ash from duct, expansion joint covets and bring down the ash to 0” meter floor before cutting and removed of eroded portion, transporting & devoluting scrap to central stores / NCTPS. Including cost of consumables and T&P’s.

Transporting of 6 mm M.S / Checkered plates from stores 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 in FD, PA delivery duct, Hot and Cold air duct area. Including cost of consumables and T&P’s. (The Required Material will be supplied by Contractor)

Welding eroded initial welding joints in the FD, PA delivery to APH inlet duct 0 mtr to 16 mtr, PA hot air duct APH outlet to common duct (Before mill branch duct expansion joints) at above 18 mtr elevation and Cold air inter connection duct from near dynovan tapping man hole door area at 5 mtr elevation. Including cost of consumables and T&P’s.

Renewal / Rectification of metallic expansion joints FD Near inter connection & PA delivery duct : 3058 X 2960 X 81, style #01 HS = 12.03Mtr, 3007 X 1839 X 81 mm, Style # 01,HS = 9.69Mtrs and Hot Duct slope - 3362 X 4350 X 272 mm, Style # 02, HS = 15.42Mtrs : Work involves arresting the upstream and downstream of duct, cutting and removal of existing eroded cover plate and metallic expansion joints and gauching. Leading, lifting, positioning of new expansion joint, aligning with the duct channel and complete welding. (The Required Material will be supplied by TANGEDCO)

Strengthening of steel supports (outside) for FD,PA fan delivery duct A & B pass below 9 Mtr elevation work involves fabrication and Erection of new M.S Channels for strengthening of additional steel supports. Including cost of consumables and T&P’s.

Removing the existing eroded duct supports, supports for FD, PA fan delivery and FD, PA hot air ducts in A & B pass area and transporting of new pipes / Angles from central stores / NCTPS, cutting into required size leading, lifting, positioning and welding. Including cost of consumables and T&P’s. (The Required Material will be supplied by TANGEDCO)

Charges for renewal / reconditioning of frames and doors for the Primary and secondary air ducts man hole doors. Including cost of consumables and T&P’s.

KR CONTRACTOR (BID ID -1100890)