8366 MAINTENANCE / REPAIRS TO SUBMERSIBLE PUMPS, BORE WELLS, PRESSURE FILTERS, CLEANING TO FRESH WATER SUMPS, UNDER GROUND TANKS, VALVE CHAMBERS AND CONNECTED PIPE LINE WORKS 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.

M&L for Disconnecting of electric connections from LT control panel and starter of submersible pump set, removing the pipe line connection from discharge side, lifting submersible pump motor set alongwith column pipe from bore well (depth approx 75 RM) with the help of chain pulley blcok including transporting to workshop for repair (including minor Repair) complete all as specified and as directed by Engr-in-charge.

M&L Lowering of submersible pump set including column pipe after repair and reconnecting with existing pipe line and making electric connection with the panel board including replacement of rusted nuts, bolts, rubber gaskets and clamps including transporting from workshop after repair complete all as specified and as directed by Engr-in-charge.

Rewinding of submersible motor with copper wire of suitable gauge with insulation after removing the old unservicable winding wire and insulated material, cleaning of stator slots and making good for winding all insulating material for submersible motor of capacity 7.5 HP to 10 HP.

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.

M&L for carrying out repairs to existing sluice valve chamber of inner size exc. 0.6m x 0.6m but n.exc. 1.2m x 1.2m. 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 9 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 3 x 50 HP centrifugel 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 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] OR make as approved by the accepting officer subject to CHLORINE 65%-70%

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.

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. 21 herein before but for 50mm bore dia pipe

All as per Item No. 21 herein before but for 40mm bore dia pipe

All as per Item No. 21 herein before but for 25mm bore dia pipe

S&F in repairs 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]

S&F in repairs 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 fix sluice valve, Cast Iron double flanged of 100 mm dia as per IS, with gasket washers, nuts, bolts etc including taking down old UNSV and taken as credit complete all as specified and as directed. Make: Kirloskar/ Leader/ Advance

All as per Item no 25 herein before but for 80 mm dia

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 cutting or uprooting grass on old mud phuska including the bushes, plants/trees (less than 5 inch gridth) situated surroundings of water sumps/ OH tanks and removing rubbish offthe premises cleaning surface and preparing to receive new mud plaster complete all as directed by Engr-in-charge

S&F in repairs submersible motor starter cap-7.5 to 10 HP, 415 volts, 3 phase, 50 Hz complete all as specified and directed by Engr-in-charge. Make: L&T/Havells

M&L for Development of Tube well (Flushing) with compressed air at 25% extra capacity of pump duly flushing out muddy water complete including necessery T&P all as specified and directed by Engr-in-Charge

Disconnecting/ dismantling (electrically & mechanically) 3 phase, 440 volts, 50 cycle electrical motor from the mono-block pump set of 10 HP capacity and shifting to work shop, opening the motor end cover, taking out rotor, taking out burnt stator winding, cleaning the stator and rewinding the motor with appropriate gauge, weight and turns of super enameled copper wire using proper insulating material, varnishing with Class-I varnish, heating/ baking, reassembling the motor completely and brought back to site, fixing back duly coupled with the pump in proper alignment, connecting and testing complete all as specified. Note :- Insulation of winding shall be Class 'B' up to 7.5 HP and Class 'F' for 10 HP and above

All as per Item No. 33 herein before but of 5/ 7.5 HP capacity

Supply only flat 3 core 10 sqmm cable coper armourd cable 1100 V grade complete all as specified and directed

Material and labour for complete opening of the Dosing Pump of Make: Decrin and complete cleaning the Pump motor and Impeller and carring out repairs by replacing of the connected spares such as bearings, capacitor, switches,Injection Check Valve 3/8", Weighted suction line Strainer, 3/8" white suction and Discharge Tube of 20 mtr length, soliniod coil , furrule 1/4"and connecting nuts with Adapoter as the OEM /Eng in charge direction complete all as specified and 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 25X4 mm 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.

LAKSHMI SAI CONSTRUCTIONS

CHAITANYA CONSTRUCTIONS

SREE GAYATRI INFRA

MARINE TECHNICAL SERVICES