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

Amount

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 4.5 = 2250000 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 4.5 = 1350000 litres) Location : Filtration plant

All as per Item No 01 here-in-above but for overhead tank of 1 lakh Gallon capacity - 4 Nos ( 4x100000 x 4.5 = 1800000 litres) Location : Div Tank - Near Div Location, A tank - In 1 Assam area, B tank - near MAP accn, C tank - near MI room

All as per Item No 01 here-in-above but for overhead tank of 50000 Gallon capacity - 01 No (50000 x 4.5 = 225000 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 4.5 = 90000 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 4.5 = 454000 litres) Location - 20 Kumoan

All as per Item No 01 here-in-above complete but for underground sump 50,000 Gallon capacity - 01 nos (50000 x 4.5 = 225000 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 4.5 = 90000 litres) location - Near MAP qtrs

All as per Item No 01 here-in-above but for OH PVC tank 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.

Taking up old unserviceable CI water mains (including all fittings) of size 200mm bore with spigot and socket ends, tail pieces, sluice valves and lead joints etc. including burning out joints and recovering lead complete all as specified and directed.

Supply, Laying, Jointing and testing MS ERW Pipe with Flange end of size 200 mm dia laid in trenches/ Wall/ Floor including jointing materials, etc complete all as specified and directed. Note : Pipe fittings, excavation and PCC to be measured and paid separately.

Taking up old unserviceable CI water mains (including all fittings) of size 150mm bore with spigot and socket ends, tail pieces, sluice valves and lead joints etc. including burning out joints and recovering lead complete all as specified and directed.

Supply, Laying, Jointing and testing MS ERW Pipe with Flange end of size 150 mm dia laid in trenches/Wall/Floor including jointing materials etc complete all as specified and directed. Note : Pipe fittings, excavation and PCC to measured and paid separately.

Supply and fix in repair ductile iron Sluice valve of size 200 mm including complete fitting item with jointing materials such as nuts, bolts, washers and rubber gasket etc of suitable size complete all as specified and directed.

Supply and fix in repair ductile iron sluice valve of size 150 mm including complete fitting item with jointing materials such as nuts, bolts, washers and rubber gasket etc of suitable size complete all as specified and directed.

Supply and fix in repair ductile iron Non return valve of size 150 mm including complete fitting item with jointing materials such as nuts, bolts, washers and rubber gasket etc of suitable size complete all as specified and directed.

Supply & fix single pointed air termination copper rod 12mm dia, 300 mm long complete all as specified and directed.

S&F test point terminal block made of gun metal or phosphorus bronze of size 75x75x25mm, drilled and screwed including 3 Nos, 8mm dia 25mm long hexagonal head brass screws and suitable sheet metal powder coated enclosure complete all as specified and directed.

S&F in repair aluminium strip 25 x 3.15mm with saddles and fixing screws etc. for roof conductors and down conductors above ground complete all as specified and directed.

S&F in repair galvanised iron steel tubing, 40mm bore light grade with all fittings fixed complete to walls and ceiling or laid under floors complete all as specified and directed.

M&L for Earthing complete with galvanised steel earth plate electrode 60 cm x 60cm x 6mm thick buried directly in ground (earth pit not less than 2.25 metres deep below normal ground level) with top edge of plate not less than 1.5 m below normal ground level, connecting to the galvanised iron earth strip of size 36mm x 6mm by means of bolts, nuts, check nuts and washers of galvanised iron, earth strip shall be protected by provision of GI medium grade pipe 40mm bore including provision of concrete pit in PCC (1:2:4) type B-1 using 20mm graded stone agregates with 40mm thick cover of RCC (1:2:4) type B-1 including reinforcement and one handle of 6mm dia MS bar made to shape, GI light grade 20mm bore pipe for watering, perforated at bottom. 1.75 metre long placed on top edge of earth plate, charcoal and common salt filled 150 mm thick all around the earth plate with fixing arrangement, funnel wire mesh and earth work in any type of soil returning filling in and removal of surplus soil to a distance not exceeding 50 m all as per electrical plate No 3 of SSR-2009 Part-I and connecting to earth test point all as specified or indicated including testing on completion including dismantling of old earthing complete all as specified and directed.

S&F in repair LED Aviation/obstruction Light of reliable design and reputed manufacturer including suitable lamp on top of tank complete all as specified and directed.

Supply, laying & testing in repair PVC insulated, PVC sheathed cable galvanized steel strip or wire armoured, electric control cables (Heavy duty) with stranded copper conductor of size 1.5 sq mm, 2 core, 1100 Volts grade complete all as specified and directed.

M&L construction of brick masonry valve chamber of size 900mm x 900mm x 1050mm (Internal dimension) with PCC 1:3:6 foundation 150mm thick, brick work 23cm thick built in CM 1:6, PCC 1:3:6 coping 50 mm thick, plastering 15mm thick in CM 1:4 to all internal and exposed surfaces including excavation earth work in any type of soil, MS sheet cover 3mm thick fixed with angle iron frame 30x30x4 mm including hinges of size 125mm with locking arrangement embedded in PCC and painting of MS cover with two coats of synthetic enamel paint over a coat of red oxide primer, etc. complete all as specified and directed.

Supply and fix Submersible Pump of Capacity 3 HP with Starter working on 3 Phase, 415 Volt, 50 Hz frequency used for Priming Purpose complete all as specified and directed.

M&L construction of brick masonry valve chamber of size 1200mm x 1200mm x 1200mm (Internal dimension) with PCC 1:3:6 foundation 150mm thick, brick work 23cm thick built in CM 1:6, PCC 1:3:6 coping 50 mm thick, plastering 15mm thick in CM 1:4 to all internal and exposed surfaces including excavation earth work in any type of soil, MS sheet cover 3mm thick fixed with angle iron frame 30x30x4 mm including hinges of size 125mm with locking arrangement embedded in PCC and painting of MS cover with two coats of synthetic enamel paint over a coat of red oxide primer, etc. complete all as specified and directed.

Supply and fixing in repair ductile iron fittings for socketed spigot, bends (any type, radius and angle) tapers any type (straight, bend, increasing, decreasing or double socket etc.) Tee pieces single branch. "Y" junction, double branch, cross (all sockets or socket and spigot) collars, caps and plugs any shape of size 200mm to 300mm bore complete all as specified and directed.

Supply, laying & testing cable XLPE insulated screened, PVC bedded galvanized steel strip or wire armoured, electric power cables (heavy duty) of size 10 sqmm 2 core with stranded aluminium conductor, 1100 volts grade complete all as specified and directed.

Supply and fixing in repair MCB Distribution board SPN 2 Way for mounting SPN/SP MCBs as Incoming / outgoing, factory made, confirming to IS, fabricated out of CRCA sheet, fitted with DIN channel, neutral link and suitable rated bus bar, DBs shall be semi glossy finished with epoxy polyester based powder paint sprayed and backed at high temperature, between powder paint process the sheet steel having to go through the anti rust conditioning in not less than seven tank process to ensure smooth finish and protection against corrosion atmosphere. The DBs shall be double door type with hinged door with locking arrangement. The DBs shall be of IP 43 - IK 09 with metal door complete all as specified and directed .

Supply & fixing in repair of MCB SPN 32 Amps 'B' Series 10 KA 240 volts complete all as specified and directed.

Excavation in trenches n.exc 1.5 m wide and n.exc 1.5 m in depth for foundation of pole and laying of UG cable and getting out in any type of soil complete all as specified and directed.

Returning, filling in, and including spreading, levelling, watering and well ramming in layers not exceeding 25 cm complete all as specified and directed.

Removing surplus soil to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed.

Material & Labour for sand cushioning to under ground cable using locally available fine clean dry river sand over, under ground UG cable laid in trenches and gently punning to cushioning to cable complete all as specified and directed. Note : For the purpose of payment only punned thickness will be measured.

Material & Labour for common burnt clay bricks (locally available best quality), sub-class ‘B’ designation 75 of suitable size available in market to cover LT underground cables, laid dry and flat abutting each other with gaps not exceeding 10mm including taking down old unserviceable bricks complete all as specified and directed.

S&F in replacement water level indicator for OH Tank and Semi UG sumps complete with multistranded steel rope PVC float ball, pulley clamp, nut bolts washer including water level indicator board of MS angle iron and MS plate for frame including writing letter for water level with white paint on black surface complete all as specified and directed.

Material and labour for 100 mm thick PCC 1:3:6 Type C-2 using 40 mm graded stone aggregate as in path, finishing concrete surface even and smooth without using extra cement complete all as specified and directed.

Supply and fixing all in one comprising of high efficiency LEDs (120 lm/W), solar street Light with luminaire wattage 24/25W, High Efficiency Mono Crystalline Solar PV Module 12V 50W, lithium Ferro phosphate battery 12.8V 24Ah with inbuilt BMS technology, high efficiency LED >93%, MPPT solar charge controller and aluminium extruded body, specially designed intelligent microwave sensor to control the dimming NAD brightness of light leads to extend working time and 5 mtr long octagonal pole (type CPT-5030) top dia 70 mm bottom dia 130 mm sheet thickness 3 mm including base plate of size (L x B x T) 200 x 200 x 12 mm, bolt size 4 x 16 mm dia and bolt length 450 mm including taking down old unserviceable solar light of any capacity. Make:Crompton/Havells/Philips/Bajaj/Wipro

Schedule of Credit

HAMZA CONSTRUCTION CO (BID ID -3386176)

MOINUL HOQUE CHOUDHURY (BID ID -3387161)

M/S D.R enterprise (BID ID -3387357)

M/s UB Enterprise (BID ID -3395241)

M/S SAMAL CONSTRUCTION (BID ID -3391755)