AHP UNIT III COH work B Pass Renewal of existing corroded and damaged Bottom Ash Hopper Seal Trough supporting structure and seal Trough approach platform during capital overhaul

Amount

Material Portion: Castable refractory

SS plate 6mm thick

Beam 200 x 100

Beam 250 x 125

Channel 100 x 50

Angles 50 x 50 x 6

M.S plate 6mm thick

Base plate 16mm thick

Labour Portion: Charges for dismantling pulling out the service and stand by scrapper feeders away from BAH area for replacement of seal trough and its supporting structure, BAH vertical column and standing platform during overhauling works including Consumables and T&P's.

Charges for scaffolding up to 5m elevation all four side in BAH for carrying out the works such as dismantling, fabrication & erection of seal trough supporting structure in BAH @5m elevation to mount the seal trough, vertical supporting column and standing platform in BAH etc., including Consumables and T&P's.

Charges for dismantling and assembling of 100 NB ring header pipe lines with proper supports after carryout the fabrication & erection of seal trough and its supporting structure works including Consumables and T&P's.

Charges for arresting the BAH structural in the vertical beam of height '5mtr' this works involves shifting, lifting, leading of fabricated temporary supports to the respective BAH supporting structure and positioning leveling in the ground ,aligning with the BAH structure, ensuring resting of BAH in the temporary supports including Consumables and T&P's.

Dismantling the damaged SS seal trough and its supporting structure & standing platform in BAH @5mtr elevation, work involves arresting , cutting ,leading and removal of seal trough supporting structure as directed by the engineer in charge, including transportation, crane, winch, T&P's, consumables & devoluting the retrieved platform & BAH structural scrap.

Charges for erection & welding of SS seal trough in seal trough in BAH @ 5mtr elevation as per the standard chipping and cleaning and inspection for leaks including Consumables and T&P's.

Leading, lifting and Transportation of Iron and steel materials,from stores to site,including hire charges for mobile crane.

Fabrication and erection of seal trough supporting structure at 5 metre elevation to mount the seal trough over the Bottom Ash Hopper.Including cost of consumables and T&P's.

Fabrication and erection of BAH vertical supporting column& standing platform in BAH @5mtr elevation as per the standard and as directed by the engineer in charge. Work involves fabrication of BAH supporting structure & standing platform to required size, leading, lifting of fabricated supporting structure, fixing and welding with BAH.Including cost of consumables and T&P's.

Charges for cleaning and One coat Red oxide painting two coats of enamel paint over the seal trough supporting structure, BAH vertical column and standing platform paint, consumables and T&P's.

Charges for Providing floor grills in newly erected platform of seal trough by using M.S Chequared plate 8mm thick including cost of consumables and T&P's.

Applying refractory inside Bottom Ash hopper including consumables & T&P's.

Transportation of refractory from central stores including consumables & T&P's.

Charges for erection and dismantling of Scaffolding arrangement including consumables & T&P's.

Charges for transporting pulling back the service and stand by scrapper feeders near by BAH area after completion of seal trough and its supporting structure, BAH vertical column and standing platform during overhauling works including Consumables and T&P's.

Charges for plain Cement concrete(PCC) 1:2:4 using 12 to 20mm HBG metal including cost of all materials, labour, lead, lift.

Charges for plastering in CM 1:3,20mm thick over concrete surface including cost of all materials, lead, lift, labour, water charges etc.

MUTHU ENGINEERING WORKS