Renovation of existing 5000 GPH pressure filter at Tawa-II Mine of Pathakhera Area

Amount

Providing & fixing 80 mm diameter ISI marked class II C.I. sluice valve (with cap) complete with bolts, nuts, rubber insertions etc. complete.

Item code 18.17.1 Providing and fixing gun metal gate valve with C.I. wheel of approved quality (screwed end) : 25 mm nominal bore.

Taking out of existing filter media from the existing pressure filter, including all lifts, including disposal of the filter media within a lead of 50 metres, as per directions of Engineer-in-charge.

Repair of the existing pressure filter including repairing of its walls, strainer plate, etc. by welding of cracks & bracing of weak portions; removal of existing damaged strainers & their disposal within a lead of 50 metres; repair of all other inside fittings (except strainers); painting of inside of the pressure filter shell & inner fittings with 2 coats of water-proof anticorrosive black bitumastic paint; painting outer side of the pressure filter shell with 2 coats of water-proof aluminium paint; etc. all complete.

Repairing of existing hydrodozer to make it fully functional, including its cleaning, painting inside with with 2 coats of water-proof anticorrosive black bitumastic paint, painting outside with 2 coats of water-proof aluminium paint, repairing of its fittings, etc. all complete.

Providing & fixing ISI marked pressure guage of dial size 100 mm & range 0 to 7 kg/sqcm.

Providing & fixing HDPE strainers of approved type & quality, including cost of fixing them in the M.S. bed plate inside the pressure filter.

Supplying & laying approved quality support gravel (for filter media) consisting of the following layers (thickness of each layer shall be as directed by the Engineer-in-charge): i) Support gravels of size 25 mm to 40 mm, ii) Support gravels of size 12 mm to 25 mm, iii) Support gravels of size 6 mm to 12 mm, iv) Support gravels of size 4 mm to 6 mm, Conforming to the following specifications/ characteristics: Shape – rounded Silica content – minimum 96%

Supplying & laying of approved quality silica sand (for filter media) consisting of the following layers (thickness of each layer shall be as directed by the Engineer-in-charge): i) Sand of size 1.0 to 2.0 mm; ii) Sand of size 0.85 to 1.7 mm; iii) Sand of size 0.5 to 1.1 mm, Conform to the following specifications/ characteristics: Silica content – minimum 97%

Cleaning of water storage tanks including cleaning of floors, walls, roofs, etc. and washing with bleaching powder/ liquid chlorine solution, all complete job.

Providing and fixing sodium hypochlorite dozer with the following specifications: Type: Cylindrical container with pump; Capacity: 50 litres; Material of container: PVC (as per IS specifications) with writing work on outside; Pump: Supply = 230 V AC, Capacity = 6 LPH at 4 kg/sqcm, with mechanism to vary the output rate; Piping material: Flexible PVC;

Total impact of GST for the purpose of CTC

MAHENDRA PAWAR