Mechanised cleaning of OHTs and UGRs at Sedarapet, Karasur, Karasurpet, Thuthipet, Thondamanatham, Ramanathapuram, Pillaiyarkuppm Koonimudakku, Poraiyurpet and Konerikuppam Villages in Villianur Commune, Puducherry

Amount

Cleaning of under ground sump , Over Head R.C.C. tank (independent staging) including disposal of slit and rubbish . The cleaning shall consist following operations: i) Tank shall emptied of water by pumping and 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 particles shall be removal from the surface.v)Finally the surfcae shall be treated with ultraviolet radition etc.

Providing and high jet sprayof stabilised hydrogen peoxide with Nano silver (Aistasan Silvox WT 500 make - CHEMTEX) for the purpose of cleaning of UGRs and Ove Head Tanks RCC internal surface to avoid variety of microorganisms, larvae, cyst, fungs etc, complete as directed by the Engineer in charge.