CLEANING OF OH TANK AND RESERVIOR, UG SUMP AND ALLIED WORKS AT UMROI MIL STN UNDER GE UMROI

M&L for cleaning of semi underground sumps of 2 Nos of 2.5 lakhs Gallon capacity each through 7 stages of cleaning and sterilization consisting of the following stages complete all as specified and as directed by Engr-in-Charge. for semi underground sump 2.5 Lakh Gallon capacity. (2.5 x 02 Nos = 5 lakh gallon = 500000 X 4.54 = 2270000 Litres ). Location : Main pump house (a) First stage : MECHANIZED DEWATERING: This first stage consists of emptying water from the tank. A submersible pump is used to drain the excess water from the tank. Removal of water and semi sludge with the help of Sludge pump (electrical/hydraulic). (b) Second stage : SLUDGE REMOVAL: A sophisticated suction process is used to drain the excess sludge out of tank at a safe place away from tank. Removal of mud, sand and solid particles up to 4 inch size with the hydraulic sludge pump. (c) Third stage : HIGH PRESSURE CLEANING: The tank is then cleaned using high pressure jet machine. The rotary jet is used to clean walls and ceilings, whereas plain jet is used to clean the corners of the tank. The rotary jet acts as scrubber and can clean the most stubborn depositions. Cleaning of floor, walls and ceiling with the help of high pressure rotary jet pump having pressure range between 80-180 bars. (d) Fourth stage :MECHANIZED SCAVENGING: Mechanical scavenging using Eco-friendly, Health & Safety disinfecting chemical for removing rest over algae in water storage tank's wells to ensure minimum harmful pathogens. (e) Fifth stage: VACUUM CLEANING: The additional sludge and impurities are then removed by using a Heavy Duty industrial vacuum cleaner and are again disposed at a safer place away from the water tank. An industrial Vacuum pump is then used to clean the leftover physical impurity from the floor. (f) Sixth stage : ANTIBACTERIAL SPRAY: After above steps of cleaning, the tank is treated with a food Graded antibacterial spray FDA recommended disinfectant chemicals to make it completely bacteria free and safe for use. (g) Seven stage : 360 UV STERILIZATION: The water storage tank is then treated with 360 ultra-violet (UV) radiator to make it bacteria free and safe for storing drinking water. A specially developed UV Radiator is used to kill suspended or floating bacteria remaining in the tank. Note:- (i) All T&P, PPE Kit and Transport shall be provided by the contractor without charging any extra cost from the Dept. (ii) All the cleaning & sterilization staffs should be under accidental insurance coverage. (iii) Date of cleaning of tank should be written on the outer surface of tank in white letter over black background after cleaning is complete all as directed.

All as per Item No 01 here-in-above but for clari flocculator system of 3.00 Lakh Gallon capacity ( 300000 x 4.54 = 1362000 litres) Location : Filtration plant

All as per Item No 01 here-in-above but for overhead tank of 1.00 Lakh Gallon capacity each - 03 Nos i.e. (100000 x 3 x 4.54 = 1362000 litres) Location= Location : 11 Bgde, B tank - Near MAP accn, C tank - Near 421 Fd Hsp

All as per Item No 01 here-in-above but for overhead tank of 50000 Gallon capacity - 01 No (50000 x 4.54 = 227000 litres) MAP tank - Near MAP Qtrs

All as per Item No 01 here-in-above but for overhead tank of 20000 Gallon capacity - 01 No (20000 x 4.54 = 90800 litres) Location - Filtration plant

All as per Item No 01 here-in-above complete but for underground sump 1 lakh Gallon capacity - 01 nos (100000 x 4.54 = 454000 litres) Location - 20 Kumaon

All as per Item No 01 here-in-above complete but for underground sump 50,000 Gallon capacity - 01 nos (50000 x 4.54 = 227000 litres) Location - 17 Sikhli

All as per Item No 01 here-in-above complete but for underground sump 20,000 Gallon capacity - 01 No (20000 x 4.54 = 90800 litres) location - Near MAP Qtrs.

All as per Item No 01 here-in-above but for OH PVC tank from 500 ltr up to 1000 litres capacity. Note : (i) Outlet pipe of OH PVC tank should be plugged before cleaning the OHT to avoid entering scale and the same shall be reconnected after cleaning the OHT and the quoted rate is deemed to include for this provision. (ii) Contractor will be responsible for rectification of complaints occurred during cleaning of tank i.e. No water in tank/ Over flow due to broken of float valve/blockage of outlet lines due to silt and rectification cost will be deemed to be included in quoted rate.

M&L for cleaning of overhead tanks of 1 lakh Gallon capacity( Location : A tank - 11 Bihar) by first draining out all water using dewatering pump, remove all accumulated sludge, slit, algae and debris from the floor and corner of the sump, clean walls, floor, columns and corners and apply one coat of mixure having 10% volume of Nanotechnology based rapid tank cleaner(IC-9002/ food grade) with 90% volume of water having disperse self oxidation, anti bacterial, anti fungal liquid using nylon brushes and clean the interior walls and bottom of the sump using good quality brush after the surface is dried complete all as directed.. Note: Minimum 450 Kg of IC-9002 Nano Rapid Super Cleaner to be used for above OH Tanks.