Institute Of Physics Tender

Cleaning of terrace/loft water storage tank (inside surface area) upto 2000 litre capacity at all heights with coconut brushes, duster etc., removal of silt, rubbish from the tank and cleaning the tank with fresh water disinfecting with bleaching powder @ 0.5gm per litre 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. (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 or 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 nothing extra will be paid on this account)

Cleaning of drinking water storage tanks/sumps by scrubbing the periphery wall surfaces, floors and ceilings with suitble high pressure jet sprayer to remove all mineral/biological deposits i/c any micro organisms, silts, sand, clay etc. and by spraying with jet sprays chemical lime/silver nitrate/hypocholorite/Potassium Permanganate/Iodine/Ethyl Alcohol diluted to permissible limit, rinse the surface of the tank with clean potable water and remove all wash water and sediments from all surfaces with vaccum and suction pumps and disinfect with low pressure spray with the internal area through HAB machine i/c dewatering the balance left over water in sumps(assume 60cm deep) before commencing cleaning of tank and final disinfections with UV radiations through UV light to destroy the floating micro organisms. Overhead Tank of Capacity 500 ltrs. To 2000 ltrs. B(old) type Qtrs.-12 x 1000 C(old) type Qtrs.-4 x 1000 D(old) type Qtrs.-4 x 1000 E(old) type Qtrs.-4 x 1000 E-1/1 type Qtrs.-4 x 1000 IBL-2 x 1000 Mess-2 x 1000 VE type Qtrs.-5 x 1980 Old Hostel-2 x 1000 Directors bungalow-2 x 500 Office Main building-2 x 1000 Work shop front building-2 x 1000

Cleaning of under ground 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:- (a)Tank shall be emptied of water by pumping & bottom shall be cleaned of silt and other deposits. (b) Entire surface area of the sump shall then scrubbed thoroughly with wire brush etc. and pressure washed with water. (c )Chlorination of RCC internal surface by liquid chlorine. (d) The treated surface shall be dried using air jetting and all loose particles shall be removal from the surface. ( e) Finally the surface shall be treated with ultraviolet radiation etc. as per direction of Engineer-in-Charge. Main Overhead Tank GH Main Overhead Tank of RCC Main Underground Sump II-B type Qtrs. III-C type Qtrs.-5 x 4044.20 IV-D type Qtrs.-5 x 4265.40 Workshop-1 x 2828 IBL-2 x 5000 Efficiency Apartment-210 SQM Guest House Library New Hostel I-A type Qtrs. Medical & Bank Extension Building VE type Qtrs. IoP Block-B Building