ANNUAL OPERATION, MAINTENANCE, REPAIRS, AND OTHER EMERGENT WORKS OF WATER TREATMENT PLANT TANGNAR TOP BOTTOM STATION TANGNAR FOR THE YEAR OF 2026-27 (STAGE CONTRACT).

Removal of old chocked filter media (sand & gravel) manually by scrapping and removing layer wise with the help of rope and buckets carefully to ensure separation of the different grades / guages and stacking / dumping within an average lead of 100Mtrs. as directed by Engineer In-charge. Complete Job.

Washing / cleaning / seiving of filter media of all grades getting free from all dirt, clay, dust etc. The job includes stacking of serviceable cleaned filter media and to separate the different sizes for use in layers (measurements to be taken in finished form).

Providing, laying and placing in position, filter media i.e. (Natural gravel of size 25mm to 2mm spherical as much as possible to be arranged in three layers of 200mm each as a graded material with coarse layer at bottom and fine at top in the range of 25mm-12mm, 12mm -6mm and 6mm -2mm) in filter beds, properly graded, duly cleaned, washed and placed above and surrounding PVC under drainage pipes without causing any damage to these pipes including all carriages, leads lifts etc. up to site of consumption. The filter media shall conform to relevant IS: specification / referred to IS:8419 (Part-I) 1977 read with latest amendments. (Complete Job) including all carriages whatsoever involved.

Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20 cm in depth, consolidating each deposited layer by ramming and watering, lead upto 50 m and lift upto 1.5 m.

General servicing and annual maintenance of 40HP Air Blower and Motor Assembly with dry starter by way of dismantling Dismembering and carrying to appropriate workshop for repairs, overhauling, replacement of worn out / damaged parts in Air Blower and motor, carrying back to site of work, after completion of overhauling to the best satisfaction of the Engineer-in-Charge, reassembling and re-fixing at its original position including replacement of M.Oil of suitable grade, air filter polyester fan belts corresponding to IS specification, replacement of worn out nuts and botls by SS anti-corrosive nuts and bolts, greasing of parts including repairs to electrical control boxes, making of required electrical and mechanical connections, including painting of surfaces with two coats of primer and metal paint of approved quality to give an even shade. The job includes all labour, T&P charges, taxes etc. whatever required as directed by Engineer-in Charge.

General servicing / overhauling of 20HP vertical submersible back wash pumping unit assembly with dry starter by way of dismantling / dismembering and carrying to appropriate workshop for repairs, overhauling, replacement of worn out / damaged parts in back wash pump and motor, carrying back to site of work, after completion of overhauling to the best satisfaction of the Engineer-in-Charge, reassembling and refixing at its original position including replacement of M.Oil of suitable air filter polyester fan belts corresponding to specification, replacement of worn out nuts and bolts by S.S anti-corrosive nuts and bolts, greasing of parts including repairs to electrical control boxes, making of required electrical and mechanical connections, including painting of surfaces with two coats of primer and metal paint of approved quality to give an even shade. The job includes all labour, T&P charges, taxes, etc. complete job.

Providing and installation of different types of MCCB / MCB. The job includes making of electrical connections and should be Havels / Anchor / GM Make. i. 400Amp MCCB

ii. 250Amp MCCB

iii. 100Amp MCCB

iv. 63Amp MCCB