REPAIR/MAINT OF BOREWELLOF APS-III PUMP HOUSE, HAVELOCK LINE PUMP HOUSE AND HUDSON LINE PUMP HOUSE ALONGWITH REPAIR REPLACEMENT TO OLD/UNSV/CORRODED COLUMN PIPE,UNSV SEBMERSIBLE CABLE, NRV,VALVE PIT CHAMBER AND CERTAIN MISC WORK OF WATER SUPPLY SYSTE

Amount

Disconnection of submersible pump set of any size from existing water supply system by mechanically & electrically. Taking out /Uplifting the unserviceable/ Serviceable pump set from deep borewell by disconnecting from lowering pipe line of any size with manual or suitable electric driven chain pully upto 240 ft depth. Relowering the submersible pump set in same borewell and re-connection complete all as specified and directed. Note:- (i) All type of T/P required to complete the job will be arranged by contractor and rates for the same is deemed to be quoted by contractor in this item. (ii) Job will be done round -o-clock continued as per site requirement as directed by AGE. (iii) Delay in job will be charged on the basis of Rs. 500/- per hour. (iv) Items required for motor connection such as PVC insulation tape, valcanised rubber / puncture tube etc will be provided by the contarctor to complete the work and rate as deemed to be quoted in unit rate no extra payment will be made to the contractor.

Redeveloping tubewell by compressed air with minimum pressure of 10Kg/Sqcm to 30 Kg / Sq cm and minimum 450 CFM all as specified in IS 11189-1985, para 4.3 and directed at site complete all as specified and directed. Note : (i). Compressor, pump, pipe and other allied items shall be arranged by the contractor and nothing extra shall be admissible on this account. (ii). Draining shall be got approved by the GE.

Redeveloping tube well by over pumping for tube well complete after development by compressor and water shall be used only after receipt of satisfactory test result as per IS, complete all as specified and directed. Note : Over pumping will be carried out by pumping the water at higher capacity i.e. not less than 50% above the yield of bore well. Cost of arranging pump and compressor is deemed to be included in the unit rate quoted.

M&L Pea gravel of 2 mm to 4 mm size of approved quality as ordered to pack around the casing/slotted pipes in bore well in angular space between well assembly and bore hole wall should be over minimum 15-18 cm and thoroughly washed before sorrounding in the well and treated, with suitable amount of sodium hexa-metaphosphate for 24 hrs before developing by compressed air complete all as specified and directed.

Chemical and bacteriological testing of water sample collecting from re-devoloped borewell & testing carried out from authorized Govt laboratory to ensure potability of water complete along with certified report complete all as specified and directed.

M&L Plain cement concrete 1:5:10 type E-2 using 40mm graded stone aggregate as in foundation filling and mass concrete complete all as specified and directed.

M&L Plain cement concrete 1:3:6 type C-1 using 20mm graded stone aggregate as in foundation filling and mass concrete complete all as specified and directed.

Surface excavation in soft/loose soil n.exe 30cm deep and averaging 15 cm deep and getting out complete all as specified and directed.

M&L for MS black column pipe, 3 mtr long heavy duty, 100mm bore, wall thickness 5.4mm, both end flanged with heavy duty MS flanged not less than 16mm screwed and welded inside and outside. The flange end making surface shall be made smooth including welding of 04 strip of 5.0mm thick 25mm wide and 50mm long covering pipe and both end flanged having 08 Nos predrilled hole not less than 16mm including rubber gasket, nut bolts and washer. Pipe should be duly painted with anti corrosive paint complete all as specified and directed.

M & L in repair for flange pipe joints with 3mm thick rubber gasket (packing ring) incl provision of suitable size bolts, nuts and washers etc for 100mm bore pipe complete all as specified and directed

S & F in repairs cast iron specials ISI marked for pressure water mains upto 150 mm bore spigot and socket Tee pieces, single or double branch connection or collar etc. complete all as specified and directed. Note : Excavation and earth work shall be measured and paid for separately under respectiv items.

Same as item No 11 above but for 200 to 300mm bore for pipe line/ header

Supply,Fixing and testing in reapir sluice valve 150mm bore both ends flanged class PN 1.6 with brass spindle and 01 No hand wheel including making new flanged joint with 3mm thick rubber gasket (Packing ring) with necessary bolt, nuts and washer of suitable size complete all as specified and directed.

S&F in repair non return valve (NRV) both end flanged size 150 mm (ISI marked) without by pass arrangement including jointing material commissioning and testing complete all as specified and directed.

M&L for construction of valve chamber 1050×1050×1050mm internal dimensions, 3mm thick MS sheet cover with 2 Nos MS hinges welded to angle iron frame of 40mm×40mm ×6mm thick with lifting hook and locking arrangement with brass pad lock of 65mm dia with triplicate keys complete with necessary earth work, brick work in CM (1:6), 230 mm thick, PCC bed (1:4:8) type D2 150mm thick, cement plastering finishing 15mm thick in CM (1:4) and applying a coat of black bituminous paint to the steel surfaces complete all as specified and directed.

S&F in reapir submersible cable PVC insulated and PVC sheathed conductor 16 Sqmm 3 core 1100 volts grade, flat cable conforming to IS-694: 1977 complete with necessary electric connection complete all as specified and directed.

M & L Yield testing in repair for the bore well by continuously pumping for 16 hours to determine safe pumping yield with the help of ORIFICE method complete all as specified and directed

S & F in repair MS pipe 100mm bore, 1.5 meter long with cap plug of suitable size for feeding of Pea Gravel around the bore hole of size 300mm complete all as specified and directed.

Excavating in trenches not exceeding 1.5 mtr wide & not exceeding 1.5 mtr depth for laying pipes/cable etc and getting out in soft /loose soil including forming bottom surfaces to required level or slope complete all as specified and directed.

The same as per item No 19 here in before but exc. above 1.5m depth and n.exc. 3.0m

Returning,filling in trenches excavated soil including spreading, levelling, watering and & well ramming in layers not exc 25 cm thick complete all as specified and directed.

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

Rajkaran Tubewells