Cleaning of Water Storage Tanks and Sumps by Mechanized method in Anupuram Township during the year 2025 - 2026

Amount

Cleaning and disinfection of RCC / PVC Over head water tanks and underground sumps by mechanized method in various stages such as dewatering, sludge removal, cleaning, vaccum cleaning, disinfection and UV treatment including all tools, materials, fuel, labour, safety belts, helmets, safety shoes, safety goggles, gloves, closing / opening of the scour valve, removing / refixing the manhole cover in position, etc., all complete as per specifications at all lifts and as directed by Engineer. Cleaning Process: 1) Mechanized dewatering using sophisticated powerful submersible suction pumps for Sumps and wherever required for Over head tanks. 2) Sludge removal with sludge removal equipment and flush the floor of tank / sump. 3) Cleaning the walls, ceiling and floor of the tank / sump to remove all germs, bacteria and calcinations by using High Pressure rotary water jet cleaning equipment. 4) Vacuum cleaning with industrial vacuum cleaner to completely remove the dirt to make the tank / sump totally clean.5) Sterilization / disinfecting the tank / sump by spraying a Biodegradable anti-bacterial spray of approved make and dilution shall be as per manufacturer instructions with rotary jet pumps. 6) Radiation treatment of the tank using UV radiation to completely destroy the all floating bacteria to make water tank / sump thoroughly clean. Duration of UV treatment shall be between 1 min to 10 mins depending on the size of tank as approved by Engineer-in-charge. Note: 1) Care and all precautionary measures shall be taken to avoid asphyixation while cleaning. 2) Power required for operation of pumps and equipments will be provided at free of cost from department supply. However contractor shall make their own arrangement to tap the supply from DB / Power points near by location. 3) The labourers engaged for cleaning the water storage tanks/ sintex tanks / reservoirs/ sumps shall obtain the Medical certificate by DAE Hospital before attending the work.

Residential buildings over head tanks (Tank capacity upto - 2KL)

Residential buildings over head tanks (Tank capacity - 3KL)

Public building tank capacity upto 5.00KL

Public building tank capacity beyond 5.00 KL and upto 20.00 KL

Public building tank capacity beyond 20.00 KL and upto 30.00 KL

Under Ground Sump tank capacity up to 60KL

Under Ground Sump tank capacity beyond 60KL and upto 250 KL

Under Ground Sump tank capacity beyond 250KL and upto 400 KL

Under Ground Sump tank capacity beyond 400KL and upto 600 KL (with partition)

Under Ground Sump tank capacity beyond 600KL and upto 1200 KL (with partition)

White washing one coat with shell lime over freshly cleaned surfaces of inside the sump walls including scaffolding, cost of materials, mixing with required glue, etc., all complete as per specifications at all lifts.

Painting for ladders in sumps with one coat of anti-corrosive paint of approved colour and make over a coat of red oxide zinc chromate primer, including preparation of surfaces for receiving the paint by scrapping, rubbing, labour, scaffolding etc., all complete as per specification and as directed by Engineer - In - charge.

Bidder Name

SCHELLAIAH AND COMPANY