SPECIAL REPAIR REPLACEMENT AND IMPROVEMENT OF WATER SUPPLY INSTALLATION AT STABLE HILL AND AVA HILL PUMP HOUSE AT WELLINGTON UNDER GE WELLINGTON

Amount

Supply and fixing Altoch Dosing System Model ADS – PRO (previously Stequa 510A) consisting of a) Receptacle for power-free automatic water sanitiser / conditioning treatment station with proportional dosing arrangement with following attachments: Water inlet valve, Overflow valve (rubber guard included), Outlet valve for standalone gravity flow, Outlet valve for automated flow, Drain valve, Level controller, Level gauge, Detachable grouting base with rubber buffer, Custom cover synchronous fixing arrangement, Material of construction: Non-metallic thermoplastic Maximum Temperature: 45°C, Capacity: 100 litres, Shape: Cylindrical, Compatibility: Stequa 411 AE Refill / Prefil - Total refill b) Custom cover for power-free automatic water sanitiser / conditioning treatment station with proportional dosing arrangement with following attachments: Multi-cavity arrangement with individual lids (13), In-built injector for pressurized off-line automated operation, ½ inch Inlet & outlet connections, Suction line connection with transparent tube, Base component synchronous fixing arrangement with fasteners, Material of construction: Non-metallic, Maximum Temperature: 45°C, Shape: Circular, including STEQUA 411 AE Refill set of 25 Pcs and PCC work including testing on completion all as specified and directed. Make: Declibac or equivalent

STEQUA 411 AE REFILL -Chlorine tablets contained in plastic cylindrical sealed disposable sanitiser refill for disinfection of drinking water with arrangement for controlled release of disinfectant in water, suitable for operation through suitable feeder in pressurised line/ grevity line should be able to disinfect 9,00,000 ltr of water at 0.2 to 0.5 ppm at dosing point. Replacement indication: visual & weight variation, Water contact orifice design: Sealed when dry, exposed upon immersion :Operation type: Non contact, non inhalatory, Cylinder dia: 2.5 inches ± 0.5 inches, Cylinder height: Minimum 10.0 inches ± 0.5 inches Make Declibac or equivalent all as specified and directed.

Supply only Chlorine Test kit with coloured sample complete with all testing fitments and OT solution in rexine finish box all as specified and directed. Make: Rmco

Supply Only pH Test kit with coloured sample covered phenol red (range 6.8 to 8.4) with necessary fitments and 100ml testing solution in rexine finish wooden box all as specified and directed. Make: Rmco

Supply Only TDS meter (Electronic, Digital and Pocket Type) all as specified and directed. Make: Rmco

Supply only Chlorine OT solution for chlorine test (500 ml) all as specified and directed. Make: Rmco

Supply only Phenol red solution for pH test (500 ml) all as specified and directed. Make: Rmco

Steel water tubing medium grade galvanized with all fittings and laid in trenches / fixed on walls / floors of size 15mm dia all as specified and directed.

Gunmetal gate valve with iron wheel head screwed both ends for iron pipe of size 15mm dia all as specified and directed.

Supply, install testing and commossioning of horizontal centrifugal pump sets of motor capacity 30 HP, 2950-3000 rpm electric driven, suction and discharge capacity (minimume) 30 m3 / hour at 90 -95 mtr head, cast iron body , bronze Impellar, motor shall be Energy Efficient motor confirming to IS-12615, section / Delivery size of 100 mm dia pipe of GI medium grade, Base frame for the pump set made out of ISMC 100mm channei complete all as specified and directed.

Fully Automatic Star Delta Starter 30 HP type ML-3 current rating 30 to 45 Amp in Sheet-Steel Enclosure with Single Phase Protection feature (Motor Rating AC-3 Duty, 415 V, 50HZ, 3 Ph) all as specified and directed. Make: L&T or equivalent in ABB/Siemens.

3 run of 10 Sqmm single core flexible cable multistranded drawn through PVC pipe of suitable dia from starter to pump set all as specified and directed.

Taking down old unserviceable gate valve 50 mm dia and Supply and fixing PN-1 sluice valve cast iron double flanged type non raising spindle with hand wheel and fixed by means of suitable bolts and nuts etc,after putting new rubber gasket etc for 100mm dia all as specified and directed.

Taking down old unserviceable foot valve and Supply and fixing Footvalve cast Iron conforming to IS 4038 100 dia all as specified and directed.

Taking up/down carefully unserviceable GI Pipe and fittings from the trenches/ Wall/ floor of size 50/80 mm all as specified and directed.

Steel water tubing medium grade galvanized with all fittings and laid in trenches / fixed on walls / floors of size 100mm dia all as specified and directed.

Dismantling the existing broken valve chamber completely and construction of valve chamber having inner dimension 750 x 750 x 600 mm suitable for upto 50 mm gate valve with PCC 1: 4: 8 type D2 for foundation, brick work in cement mortar (1:4), PCC 1: 2: 4 type B1 for coping, rendering in CM 1:4, 15mm thick including provision of MS Sheet top cover 3.15 mm thick with brazing of MS flat of size 25 mm x 4mm at edges and in diagonal and angle iron base frame of 40 x 40 x 5 mm, painting with two coats of synthetic enamel paint over a coat of red oxide primer and locking arrangements including necessary excavation earth work complete all as specified and directed.

Supply and fixing NRV / reflex valve with by pass arrengement, 100mm dia all as specified and directed.

Excavation in trenches not exceeding 1.5M wide and not exceeding 1.5M in depth and getting out in hard/dense soil for laying of GI/DI Pipe all as specified and directed.

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

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

PCC 1:2:4 type B-2 using 40mm graded stone aggregate for making good of foundation finished fair and even and for pillars, posts foundation etc all as specified and directed.

Earthing complete with galvanised steel earth plate electrode 60 × 60cm × 6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to galvanised iron strip 25×4mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified or indicated including testing on completion all as specified and directed.

SREERAM

S.RAMACHANDRAN