REPAIRS MAINTENANCE OF EXTERNAL WATER SUPPLY PIPE LINES PUMPS AND OTHER CONNECTED ITEMS AT DGQA OFFICE COMPLEX OFFICERS MESS AND GUNATHA VIHAR UNDER GE NORTH BANGALORE

Amount

Excavation in trenches not exceeding 1.5 m depth and not exceeding 1.5m width and getting out in hard/dense soil for laying of pipe lines all as specified as directed.

Returning, filling in excavated soil, including spreading, leveling, watering and well ramming in layers not exceeding 25 cm thick in hard / dense soil etc complete as specified as directed.

Removing excavated material to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 mtr above the starting point all as specified as directed.

Run lead joints suitable for spigot and socket ends of CI/DI pipes, fittings including spun yarn complete suitable for pipe of size 150mm dia complete all as specified and as directed.

Run lead joints suitable for spigot and socket ends of CI/DI pipes, fittings including spun yarn complete suitable for pipe of size 100mm dia complete all as specified and as directed. NOTE FOR SL ITEM NO. 1.04 & 1.05:- Excavation and earth work shall be measured and paid separately

Galvanised iron pipe of 100 mm bore dia, medium grade, laid in trenches, fixed to walls with all fittings such as socket, bends, elbow, union etc., including dismantling the old un serviceable pipe with fittings i.e. connected control gate valves / stop valves from trenches / floors / roof complete all as specified and as directed.

All as per Sl Item No. 1.06 here in before but 80 mm bore dia.

All as per Sl Item No. 1.06 here in before but 50 mm bore dia.

All as per Sl Item No. 1.06 here in before but 40 mm bore dia.

All as per Sl Item No. 1.06 here in before but 25 mm bore dia.

All as per Sl Item No. 1.06 here in before but 20 mm bore dia.

Gun metal gate or globe valves 15 mm dia with iron wheel head, screwed both ends for iron pipe and fixed including taking down the existing complete all as specified and directed.

All as per Sl Item No. 1.12 here in before but 20 mm dia.

All as per Sl Item No. 1.12 here in before but 25 mm dia.

All as per Sl Item No. 1.12 here in before but 40 mm dia.

All as per Sl Item No. 1.12 here in before but 50 mm dia.

Dismantling the existing unserviceable valve chamber and construction of brick masonary valve chamber of size 1000 mm x 1000 mm x 1000 mm (internal diemensions) suitable for sluice valve of up to 100mm bore with 100mm thick foundation PCC, (1:4:8), type D2 using 40 mm grade stone aggregate, brick wall 230mm thick, with sub class B old size bricks built in cement mortar (1:6), PCC (1:2:4) type B1 using 20mm graded stone aggregate in coping 75 mm thick, rendering in cement mortar (1:4),15 mm thick for internal and external surfaces, finished fair and even, precast RCC cover slabs 75 mm thick in (1:11/2:3) with 10 mm dia TMT bars and 12mm dia bars for handle complete all as specified and as directed.

Sluice valve 150mm dia both side flanged and ISI marked (IS-780) of sluice valve cast iron body with brass spindle and brass fly nuts, class PN-1.6 and cast iron hand wheel and joining with nut, bolt, washers and rubber insertion packing 6mm thick etc including taking down the existing complete all as specified and as directed.

All as per Sl Item No. 1.18 here in before but 100 mm bore dia.

Float valve 20mm bore with PVC body aluminium float rod, nylon float high pressure type including removing old unserviceable float valve from service tank complete all as specified and as directed.

Float valve 25mm bore with PVC body aluminium float rod, nylon float high pressure type including removing old unserviceable float valve from service tank complete all as specified and as directed.

Plain Cement Concrete as in foundation filling and mass concrete, type B-2, (1:2:4), using 40 mm graded stone aggregate complete all as specified and as directed.

15mm thick rendering on fair faces of brick or concrete surface in cement mortar (1:4) and finishing the surfaces with even and smooth without using extra cement complete all as specified and directed.

Rotational moulded polythene water storage tank of capacity 1000 ltrs (cylindrical vertical with closed top) with ISI mark embosed on it, hoisted and fixed in position with inlet and outlet complete all as specified in SSR part I all as specified and as directed.

Rotational moulded polythene water storage tank of capacity 500 ltrs (cylindrical vertical with closed top) with ISI mark embosed on it, hoisted and fixed in position with inlet and outlet complete all as specified in SSR part I all as specified and as directed.

Repairs / maintenance of centrifugal / monoblock pumpsets regularly / systematically including inspection, adjustment, repairs by opening the pump set for carrying out the preventive maintenance and repair by checking the serviceability alignment of various spares, removing the unserviceable pump spares and replacing with new spare parts, components servicing, cleaning and overhauling the same by lubricating, replacement of gasket, refixing the same after servicing, testing the same for smooth running, replacing minor parts like Gland rope, bolts & nuts, packing, threading and replacing spares and matching inclusive etc all as specified and as directed of the following capacities pump sets. NOTE :- New spares shall be measured and paid separately. (a) 15 to 25 HP any model and make at Gunatha vihar Pump house

(b) 5 HP any model and make at CQAL and DIQA pump house

Disconnecting the electric cable from the terminal box of upto 5HP motor, disconnecting the motor from the pump, remove the motor from the foundation bed and taking out the motor and transporting to authorised work shop and performing following works as specified and directed by Engr-in-Charge:- (i) Dismantling the motor and taking out the burnt copper winding / fibre strip / insulating materials and worn out ball bearing - 2 Nos. (ii) Clean the stator slots by CTC solution and rewinding stator slots with super enamelled copper wire of existing gauge with insulating materials /fibre strip / varnishing and connecting terminal connections of fiber glass coated wire. (iii) Replacement of ball bearing - 2 Nos. (iv) Assembling the motor and painting with two coats of synthetic enamel paint over one coat of primer including marking flow of water and MES No all as per norms and all as specified and as directed by the engineer-in-charge. (v) Transporting to the motor to the site refixing on foundation channel with new bolts and nuts, coupling the pump and motor with correct alignment apply grease and connecting electrical connections testing complete alll as directed and specified by the Engr-in-charge.

All as per Sl Item No. 1.28 here in before but 15 HP motor.

All as per Sl Item No. 1.28 here in before but 25 HP motor.

Scraping the old paint by using wire brush and emery paper and preparation of the surfaces of 15 to 25 HP capacity pump set including control panel / suction and delivery pipe of the pump house and painting with two coats of synthetic enamel paint oveer one coat of primer including marking flow of water and MES NO as per standard norms complete all as specified and as directed.

All as per Sl Item No. 1.31 here in before but 5 HP Pump set.

Disconnecting the electrical connections, lifting the submersible pumpset with 50mm GI pipe from 500 to 700 feet depth of bore wells of up to 7.5 HP capacity, dismantling the pump set and rewinding the submerssible motor with super enamelled copper wire of suitable gauge replacing the damaged impeller, bearing , bushes, stainer as per exisiting size and assembiling the same including necessary lathe works, fixing the motor and proper insulation, connecting and testing including painting with two coats of synthetic enamel paint over one coat of primer and lowering the same, testing and commissioning all as specified and as directed.

Single phase preventer suitable for various capacity of motors of make : L&T or equivalent, 7.5 /5 HP capacity including removing the defective single phase preventer from star / delta starter all as specified and as directed.

Taking down carefully electric driven centrifugal / monoblock pump set of 5 to 25 HP capacity from foundation / MS channel after disconnecting suction / delivery lines / main electric supply from motor starter panel for and including replacement of ball bearing -02 Nos as per existing size and type at site / nearest repairing workshop including transportation and reassembling the same complete all as specified and as directed.

Taking down carefully electric driven motor of 5 to 25 HP capacity from foundation / MS channel after disconnecting suction / delivery lines / main electric supply from motor starter panel for and including replacement of ball bearing -02 Nos as per existing size and type at site / nearest repairing workshop including transportation and reassembling the same complete all as specified and as directed.

Repairing the star / delta starter fully automatic starter including replacing with new spares ie. Contactor, timer, relays etc suitable for existing make and capacirty of ML1 / ML2 / ML3 / ML4 / ML1.5 / MK1 complete all as specified and as directed. NOTE :- Spares shall be measured and paid separately.

Supply only starter contactor of ML 1.5 type Make L & T Cat No. SS91851 or techno commercially equivalent makes specified in PS complete all as specified and as directed.

Supply only starter contactor of ML 2 W type Make L & T Cat No. CS96005LOOO or techno commercially equivalent makes specified in PS complete all as specified and as directed.

Supply only starter relay of ML 2 /3 type Make L & T Cat No. SS91859OOCO / SS91859OOEO or techno commercially equivalent makes specified in PS complete all as specified and as directed.

Supply only standard operating coil for ML 1.5 type Make L & T Cat No. SS90873POOO or techno commercially equivalent makes specified in PS complete all as specified and as directed.

Taking out the existing un serviceable submersible panel, supply and fixing of new accessories like starter, single phase preventor, fuse cut outs, indicating lamp, coil, terminal block etc suitable for 5/7.5 HP, submersible pump set for outdoor application all as directed. NOTE:- Job includes necessary civil works such as foundation, grounding of panel etc & connecting back existing old cables as directed at site.

Electronic timers ST 100 operating range of 160V to 500V of Make L & T cat No. ST80328OOOO / ST80329OOOO or techno commercially equivalent makes specified in PS including taking down the existing complete all as specified and as directed.

Pressure gauge 1-10.6 kg per sq.cm 100 mm dia. dial 3/8" threaded type with stop cock arrangements including taking down the existing from the pump set / water supply line complete all as specified and as directed.

Pump shaft as per existing size suitable for pump ser of 25 HP capacity all as specified and as directed.

Pump shaft as per existing size suitable for pump ser of 5 HP capacity all as specified and as directed.

Rubber gasket with CI coupling set suitable 15 to 25 HP capacity centrifugal pumping set including key, lock, stud etc complete all accessories as existing size and type complete all as specified and as directed.

Flat 3 core copper conductor cable of size 6 sq.mm including taking down the existing cable complete all as specified and as directed.

GI pipe with socket 50mm dia, heavy duty including taking down the existing pipe fixed with all fittings and fixtures complete all as specified and as directed.

Voltmeter (0-500 V), Ammeter (0-400A) of Make Meco or equivalent with indication lamps including taking down the existing complete all as specified and as directed.

Cast Iron foot valves, 100 mm dia with ISI mark embosed on it, with jointing materials etc, including taking down the existing vlaves complete all as specified and as directed.

Cast Iron foot valves, 80 mm dia with ISI mark embosed on it, with jointing materials etc, including taking down the existing vlaves complete all as specified and as directed.

Air Release Valve suitable for centrifugal pump set of any type and capacity including taking down the existing complete all as specified and as directed.

Taking out old unserviceable PVC tank from chlorine dosing system, Supply, installation and testing of High pressure single head chemical dosing system with following complete accessories, power input 230 V, 50 Hz, 40SPM, 1/30 fractional horse power, pressure 5kg/sq.cm, max output 6.5 ltr/hr with accessories like lead tubing, connecting ferrule, check valves etc all as specified and as directed :- Make- AQUAFIT or any other E-in-C approved make. (a) Preparation Tank Model AQUA1005 of net capacity 170 ltrs FRP Dosing Tank dia 650 x net heigh 375 + conical 300mm, Gross height with stand 1000mm consisting of water inlet line, outlet with Y strainer, drain, overflow, conical bottom of sludge deposition, pot hole with cover, level gauge. (b) Agitator 120 watt 900 RPM single phase flange mounted motor with plastic shaft and impeller. (c) Service tank Model No. AQUA1006 of net capcity 100 ltrs of FRP dosing tank top dia 540mm x bottom dia 480 mm x height 575 mm consisting of water inlet line. Dosing pump inlet arrangement, drain overflow, level gauge, Inspection port. (d) Agitator 120 watt 900 RPM single phase flange mounted motor with plastic shaft and impeller.

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