OT 05/24-25

Amount

Charges for inspection of scrapper and rubber squeezer including the cost of bolt& nuts , required T&P’s and consumables.

Charges for removing the rust and old paint from the structures immersed in the water, exposed to the atmosphere and the outer surface of pipeline near stilling chamber including required T&P’s and consumables.

Charges for painting with one coat of rust convertor (Impodex/ Impodor), one coat of red oxide primer and one coat of epoxy high built coal tar with proper interval on the structural surfaces immersed in water including required consumables. [Required quantities of rust convertor, epoxy red oxide primer, Epoxy High built Coal Tar and Epoxy thinner - all are Asian/Berger make are of contractor scope]

Charges for painting with two coats of enamel grey paint with proper interval on the structural surfaces of clarifier exposed to atmosphere including required consumables. [Required quantities of enamel grey paint (Asian/Berger make)and thinner (Asian/Berger make) are of contractor scope]

Charges for painting the corroded outer surface of 600NB Raw water pipeline near stilling chamber with one coat of epoxy red oxide primer and two coats of epoxy sea green including cost of paints and other required consumables. [Required quantities of epoxy red oxide primer (Asian/ Berger make), epoxy sea green (Asian/ Berger make) are of contractor's scope]

Charges for dismantling and reassembling of the G.I. corrugated sheet fixed manhole door over the fabricated M.S. structural truss for cleaning the launder portion of clarifier by civil maintenance including required T&P’s and consumables.

Charges for dismantling the valve from sludge transfer pipe line of clarifier, cleaning all the parts of the valve, checking the seating surfaces. Lapping the gate / seat / disc / flap for perfect blue matching. Reassembling the valve with new bonnet gaskets and gland packings including required T&P’s and consumables.

Charges for dismantling, cleaning , inspection , renewal of bearings and other spares of flocculator drive gearbox assembly, reassembling and checking its operation including cost of bearings,T&P's and required consumables.

Charges for transporting the 2 Nos. of flocculator assembly from Pre Treatment Plant to outside workshop for reconditioning work and bringing back after the completion of work.

Charges for reconditioning the gear box body (Bearing seating areas, internal surface, oil seal area) by metal build up and machining to required size including required T&P's and consumables.

Charges for providing scaffolding arrangement at 4.5m height for removing the flocculator assembly and mounting after completing overhauling including required T&P's and consumables.

Charges for replacing the damaged PVC tank and its discharge pipeline arrangement with new tank and pipeline for dosing sodium hypo chlorite solution in clarifier /Pre Treatment plant including cost of PVC tank,UPVC pipeline, required fittings,T&P's and consumables.

Charges for opening the 1000NB manhole door on either side of suction header of CTmakeup pumps for inspection and cleaning the debris inside the pipeline and fixing the same after the completion of work including cost of consumables and T&P's etc.

Charges for renewal / replacement of 1 No. of new / old released discharge line spool piece assembly with bellow on delivery branch side in Raw water pump by supporting,dismantling & removal of bolts & nuts, cleaning the matching surfaces and holes, aligning, reassembling of new/old rectified spare(s) on BFV side and tightening of all bolts and nuts including required T&P's and consumables.

Charges for renewal of rubberseal in 900mm MOV of Raw water pump discharge pipeline by removing the old nitrile rubberseal from the flap , fixing the new Nitrile rubber seal,checking the open/close operation manually, positioning the BFV along with gearbox including hire charges for T&P's and required consumables (Rubberseal will be supplied by TANGEDCO at free of cost) .

Charges for fabrication of special fixtures for fixing the hydraulic jack and remove the Gear box and its internals including required T&P's and consumables.

Charges for Overhauling the Butterfly valve gearbox in Raw Water pump discharge MOV by releasing the gear box from the butterfly valve shaft using special fixtures, checking the internals, cleaning, renewal of wornout "O" rings , reassembling intact and satisfactory commissioning and ensuring free operation including required T&P's and consumables.

Charges for cutting the dummy for 900NB BFV for isolating and also for arresting the water passing from MTPS-I raw water discharge pipe to carry out maintanance work in discharge BFV of Raw water pump/MTPS-II including required T&P's and consumables (Required MS plate will be supplied by TANGEDCO at free of cost ).

Charges for putting 32 Nos. of holes of size 42mm in MS dummy plate for isolating Raw water pump to carry out maintenance work including required T&P's and consumables.

Charges for insert dummy for isolating raw water pump to carry out maintenance work, removing dummy after the completion of work, Gasket renewal in 900NB pipeline Flange which involves,dismantling the flange bolts & nuts, cleaning the flange surface on both sides,preparation of gaskets for both ends, positioning and assembling of flange in line with gaskets and tightening the flange bolts & nuts including required T&P's and consumables.

PREETHI ENTERPRISES