8273 REPAIR, MAINTENANCE OF VALVE CHAMBERS, WATER SUPPLY INSTALLATIONS, CLEANING OF WATER STORAGE TANKS ETC. AT NSTL UNDER AGE (I) RnD NSTL, VISAKHAPATNAM

Amount

M&L for cleaning the under ground sump of capacity 2,00,000 Gallon by de-canning of water retained in the sump with the help of suitable pump set and removing the silt/ sludge deposited at bottom, cleaning the internal walls of the sump using high pressure vacuum water jet and cleaning followed by anti bacterial (non toxic) spray with UV radiation for killing suspended bacteria, white washing the internal wall/ floor surfaces including preparation and painting all the MS & Steel items/ structures inside tank with 2 Coats of synthetic enamel black paint over one coat of red oxide primer and closing all the air vents with wire mesh to avoid mosquito breeding if any, writing the cleaning date and due date of cleaning with white letters over a coat of black paint back ground complete at domestic and technical area all as specified and as directed.

All as per item No. 1 herein before but Under ground sump of capacity 40,000 Gallons.

M&L for cleaning the Overhead reservoir of capacity 2,50,000 Litre at 18m height staging by de-canning of water retained in the tank with the help of suitable pump set and removing the silt/ sludge deposited at bottom, cleaning the internal walls of the sump using high pressure vacuum water jet and cleaning followed by anti bacterial (non toxic) spray with UV radiation for killing suspended bacteria, white washing the internal wall/ floor surfaces including preparation and painting all the MS & Steel items/ structures inside tank with 2 Coats of synthetic enamel black paint over one coat of red oxide primer and closing all the air vents with wire mesh to avoid mosquito breeding if any, writing the cleaning date and due date of cleaning with white letters over a coat of black paint back ground complete at domestic and technical area all as specified and as directed.

M&L for cleaning the static water tank of capacity 40,000 Litre by de-canning of water retained in the sump with the help of suitable pump set and removing the silt/ sludge deposited at bottom, cleaning the internal walls of the sump using high pressure vacuum water jet and cleaning followed by anti bacterial (non toxic) spray with UV radiation for killing suspended bacteria, white washing the internal wall/ floor surfaces including preparation and painting all the MS & Steel items/ structures inside tank with 2 Coats of synthetic enamel black paint over one coat of red oxide primer and closing all the air vents with wire mesh to avoid mosquito breeding if any, writing the cleaning date and due date of cleaning with white letters over a coat of black paint back ground complete at domestic and technical area all as specified and as directed.

All as per item No. 4 herein before but static water tank of capacity 1,00,000 Litres.

M&L for Chemical and Bacteriological and platelets testing to ascertain the Portability of water samples from recognized laboratory duly approved by Central/ State Government and submit the test results duly signed by Lab Authorities. Note :- 1. All the materials required for collection of samples duly sterilized to be provided by the contractor. 2. All Expenditure and transportation charges deemed to be inclusive in the unit rate.

Clearing off the shrubs, vegetation grass, bushes, plants and saplings grown around water supply installations/ valve chambers and removing rubbish off the premises complete all as directed by Engineer-in-Charge

M&L for mild steel plates (plain or chequered), channels, square cut or notched (ordinary and counter sunk) forming holes, with riveted, bolted or welded attachment complete including dismantling existing rusted covers all as specified

Supply only Orthotolidine Reagent for water testing in 500 ml bottle for testing chlorine content in potable water. [Make: Rmmco/ Declibac]

M&L for carrying out repairs to existing sluice valve chamber of inner size up to and including 0.9m x 0.9m complete by removing small plants, bushes from inside/out side the valve chambers, cleaning internal/ external wall surfaces, refixing loose valve chamber cover frame by grouting, plastering internal / external walls with cement mortar 1:3 including filling up damaged portion with precast cement concrete solid block masonry 1:3:6 type C1 in cement mortar 1:4 complete all as directed.

All as per Item No. 10 herein before but of inner size exc. 0.6m x 0.6m but n.exc. 1.2m x 1.2m.

All as per Item No. 10 herein before but of inner size exc. 1.2m x 1.2m but n.exc. 2m x 2m.

M&L for complete painting of the installation consisting of connected valves and pipe lines operated with 2 x 50 HP centrifugal pump/ motor sets and control LT panel of the existing colour with one coat of synthetic enamel paint all as specified and directed

Supply only Altoch GP [Calcium based high strength granular chlorination chemical], supplied in sealed HDPE Jar of 45 kg (net weight) each. [Make: Declibac Technologies]

Supply only Calcium based granular disinfectant [Calcium hypochlorite] for water treatment in 45 kg sealed containers all as specified. [Make: Sree Rayalaseema Hi-Strength Hypo Ltd., 'AQUAFIT-CHLORINE 65%-70%' brand]

M&L for preparation of old painted steel surfaces of valve chamber covers/ manhole covers of UG Sump/ Overhead Tank etc. and applying one coat of synthetic enamel paint of existing colour complete all as specified and as directed.

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth for foundation of pole or cable trenches etc and getting out in hard/dense soil complete all as specified and as directed by the Engineer-in-Charge.

Returning filling in including spreading, leveling, watering and well ramming in layers not exceeding 25 cm thick complete all as specified and as directed by Engineer-in-Charge.

Removal excavated soil not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified and as directed by Engineer-in-Charge

M&L for dismantling and taking out MS Pipe 150mm bore dia complete all as specified. [Note: Excavation and earth work shall be measured and paid separately]

Supply, laying, jointing testing and commissioning 150mm bore dia MS ERW electric resistance welded plain end heavy duty pipe, manufactured as per IS-1239, 1990 along with all fittings/specials such as bends, tees, collars, reducers etc. including welding the joints, complete laid in trenches/ on floor/ wall including wrapping and coating all as specified.

All as per Item No. 21 herein before but for 100mm bore dia pipe

S&F Cast iron butterfly valve 150mm bore dia, both ends flanged with resilient valve lining molded black seat conforming to BS 5155 complete including jointing to water mains with necessary rubber insertion sheet, nuts, bolts & washers complete all as specified including taking down existing unserviceable valve. [Make: Leader/ Kirloskar/ Upadhaya/ Kartar/ Venus]

S&F Cast iron butterfly valve 100mm bore dia, both ends flanged with resilient valve lining molded black seat conforming to BS 5155 complete including jointing to water mains with necessary rubber insertion sheet, nuts, bolts & washers complete all as specified including taking down existing unserviceable valve. [Make: Leader/ Kirloskar/ Upadhaya/ Kartar/ Venus]

S&F GI tubing medium grade 80mm dia bore with all fittings such as bends, sockets, elbows, tees, reducers, unions, sockets complete laid in trenches/ floors or fixed to walls complete all as specified including taking up the old unserviceable pipe. [Make: Jindal/ Prakash/ Tata/ Zenith]

All as per Item No. 25 herein before but for 50mm bore dia pipe

All as per Item No. 25 herein before but for 40mm bore dia pipe

All as per Item No. 25 herein before but for 25mm bore dia pipe

Taking up old unserviceable gun metal gate valve and S&F new gun metal gate valve of 50mm dia bore [Class-I, 1.5 Mpa] with ISI mark and iron wheel head, screwed both ends to GI pipes. [Make: Leader/ Zoloto/ Mittal/ Neta]

Taking up old unserviceable gun metal gate valve and S&F new gun metal gate valve of 25mm dia bore [Class-I, 1.5 Mpa] with ISI mark and iron wheel head, screwed both ends to GI pipes. [Make: Leader/ Zoloto/ Mittal/ Neta]

Supply and install water level indicator complete, with float [PVC] heavy duty of suitable size connected to one end of approved quality flexible nylon rope 13mm dia and indicator dead weight type, MS steel needle to the other end of the rope for smooth movement, including suitable size of pulley fixed on angle iron bracket mounted on wall/ top of the tank/sump and drilling hole for passing rope of level indicator into the tank from the top of the level indicator board, preparation of old plastered surface of wall and applying two coats of synthetic enamel paint back ground and marking of indicator scale for depth in feet and quantity of water in litres complete all as directed including taking down existing unserviceable indicator.

M&L for overhauling of chlorine dozing pump of capacity 0.50 HP, make: Decrin including replacing unserviceable spares such as bearing, capacitor, injection check valve ⅜” weighted suction line strainer, suction and discharge tube 20m length, solenoid coil, ferrule ¼” end connection of nuts and adaptor all as specified and as directed

Decoupling the pump of capacity of 7.5 HP from motor, dismantling pump set, shaft housing impeller etc. metaling /filling the worn-out portion of pump shaft, including lathe work, making the shaft to its original size, replacing the bearing by new one of same size including necessary repairs /replacement of rusted nuts/bolts etc; reassembling the pump set and testing on completion complete all as specified and as directed.

M&L for Earthing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to galvanized earth strip of 25X4mm size by means of bolts, nuts, check nuts and washers of galvanized iron or steel and connected from earth plate electrode to main switch board/ earthing test point including watering arrangement with PCC 1:3:6 type C1 chamber, MS funnel, wire gauge, 50mm thick precast RCC cover in Type B1, including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to a distance n.exc 50m, charcoal and salt complete all as shown in electrical plate No. 3 of Schedule Part-I 2009 and connected to earthing test point all as specified or indicated and testing on completion

Dharmik Constructions

LAKSHMI SAI CONSTRUCTIONS