ARM OF CLEANING AND DISINFECTION OF DRINKING WATER TANKS

Amount

TANK CLEANING

Cleaning of terrace/ loft water storage tank (inside surface area) upto 2000 litre capacity at all height with coconut bruses, duster etc. removal of silit, rubbish from the tank and cleaning the tank with fresh water disinfecting with bleaching powder @ 0.5gm. per liter capacity of tank including marking the date of cleaning on the side of tank body with the help of stencil and paint and disposing of malba all complete as per direction of Engineer-In-charge all complete as per direction of Engineer-in-charge ( The old date already written on tank should be removed with paint remover or black paint and if date is not written with the stencil of old date is not, removed deduction will be made @ Rs. 0.10 per litre (if during cleaning any GI fittings or ball cock is damaged that is to be repaired by contractor at his own cost and noting extra will be paid on this account)

Cleaning of underground sump, over head R.C.C. Tank (independent staging) including disposal of slit and rubbish, all as per direction of Engineer-in-charge. The cleaning shall consist following operations :- i) Tank shall be emptied of water by pumping & bottom shall be cleaned of slit and other deposits ii) Entire surface area of the sump shall then scrubbed thoroughly with wire brush etc. and pressure washed with water. iii) Chlorination of RCC internal surface by liquid chlorine. iv) The treated surface shall be dried using air jetting and all loose partials shall be removal from surface. as per direction of Engineer-in-charge.

Amit Associates