REPAIRMAINT OF EXTERNAL WATER SUPPLY PIPE LINES, VALVES, PUMP AND CONNECTED WORKS AT ALWAYE AREA UNDER AGE BR ALWAYE

Amount

Excavation in trenches, not exc 1.5 m wide and not exc 1.5 m in depth; for foundation, laying of pipes, cables etc. or for shafts, wells, cesspits, manholes, pier holes, etc. not exc 10 sqm on plan and not exc 1.5 m in depth and getting out in soft/loose soil.

Returning, filling in including spreading, levelling, watering and well ramming in layers n. exc. 25cm deep with approved soil obtained from excavation complete all as specified and as directed.

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

Supplying, laying, testing, jointing and commissioning of DI pipes 150mm bore centrifugally cast, internal cement mortar lining, external zinc coating with finishing layer of black bitumen coating, pressure pipe with socket and spigot end conforming to IS: 8329 - 2000 with ISI marked class K-9 in standard length including necessary EPDM rubber gasket confirming to IS: 5382-1985 tyton joints, jointing materials including taking down of old pipes complete all as specified and as directed. Note: Length of one piece of pipe shall not be less than 5Rm

All as per item No 4 here-in-before but for 100mm bore dia.

Supplying and fixing of 100mm internal dia with CPVC Schedule 40 pipes & plain CPVC Schedule 80 fittings confirming IS-15778 in trenches or fixed to walls/ floors with all necessary fittings, jointed with CPVC primer and solvent cement including taking down old existing pipe complete all as specified and as directed.

All as per item No 6 here-in-before, but 75mm dia CPVC pipe.

Supply and fix in repairs 50mm dia CPVC pipes, SDR-13.5 & plain CPVC SDR 11 fittings, fixed on wall/concealed in wall or laid in trenches/ floor with all necessary fittings, solvents including taking down old existing pipe complete all as specified and as directed.

All as per item No 8 here-in-before, but 40mm dia CPVC pipe.

All as per item No 8 here-in-before, but 25mm dia CPVC pipe.

All as per item No 8 here-in-before, but 20mm dia CPVC pipe.

Supply and fix 500Litres rotational moulded polythylene water storage tank, (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR part I, ISI marked including dismantling old unserviceable tank complete all as specified and as directed.

All as per item No 12 here-in-before, but for 1000Litres.

All as per item No 12 here-in-before, but for 2000Litres.

Supply and fix brass ball valve, high pressure with polythene float and fly nut complete screwed for iron pipe of size 25mm dia including taking down old existing valve complete all as specified and as directed.

Supply and fix brass float valve, high pressure with polythene float and fly nut complete screwed for iron pipe of size 20mm dia including taking down old existing valve complete all as specified and as directed.

Repairs to CI sluice valves flanged type 150/100/ 80/65mm dia by taking down worn out unserviceable gland sleeve, check nut spindle, gate etc, and cleaning the valve by removing all scales and reassembling the valve with new packing nut and bolts complete all as directed by the Engineer-in-Charge.

Material & labour for PCC 1:2:4 type B1 using 20mm graded stone aggregate as in road cutting, supporting of pipes etc complete all as specified and as directed.

Supply and fixing CPVC ball valve of size 20mm dia screwed both ends or flanged both suitable for CPVC pipe including necessary fittings and taking down old u/s valve complete all specified and directed.

All as per item No 19 here-in-before, but for 25mm dia

All as per item No 19 here-in-before, but for 40mm dia

All as per item No 19 here-in-before, but for 50mm dia

Disconnecting of electric supply from star delta starter of defective centrifugal pumping set and taking out pump set with 5 HP to 30 HP motor from foundation and re-assembling of complete motor and fixing with pump set and testing complete at site, jointing, welding, turning and polishing to pump shaft any size CI/GM impeller CI bowl, making key with key way & other replacement of worn out parts with new including lathe work & any type of machine work required at site including replacement of nut & bolt, rubber gasket and reassembling pump set complete after repair, connecting & testing complete all as specified and as directed by Engr-in-charge. Note:- The unit rate quoted under this item is deemed to be inclusive of charges for transportation.

Material & labour for rewinding of centrifugal motor stator 5 HP to 10 HP with super enamelled insulated copper wire as per existing gauge with other winding material including cleaning of stator, slots replacement of defective components and parts ccomplete all as specified and as directed by Engr-in-charge.

All as per item No 24 here-in-before, but for centrifugal motor of capacity 12 to 30 HP.

All as per item No 24 here-in-before, but for submersible motor of capacity 15 HP

All as per item No 24 here-in-before, but for submersible motor/ monoblock motor of capacity 2 HP

Material & labour for replacement of bearing for centrifugal pump set motor capacity upto 30 HP complete all as specified and as directed by Engr-in-charge.

Material & labour for replacement of pump shaft of stainless steel for centrifugal pump set motor capacity upto 30 HP complete all as specified and as directed by Engr-in-charge.

Material & labour in repair for coupling complete with key for motor pump for centrifugal pump set motor capacity upto 30 HP complete all as specified and as directed by Engr-in-charge.

Material & labour for replacement of bronze impeller suitable centrifugal pump set motor capacity upto 30 HP complete all as specified and as directed by Engr-in-charge.

Material & labour in repair motor bush of gun metal upper & lower including fittings centrifugal pump set motor capacity upto 30 HP complete all as specified and as directed by Engr-in-charge.

Supply & fix in replacement brass air release valve for centrifugal pump set motor upto 30 HP capacity complete all as specified and as directed by Engr-in-charge.

Supply and install in replacement fully automatic star delta starter with single phase protection features in sheet steel enclosure type MN motor rating AC 415 V, 50 Hz, 3 phase upto 15 to 30 HP motor complete all as specified and as directed by Engr-in-charge.

Supply and install fully automatic star delta starter with single phase protection features in sheet steel enclosure type MN motor rating AC 415V, 50Hz, 3 phase upto 15 to 30HP motor complete all as specified and as directed by Engr-in-charge.

All as per item No 35 here-in-before, but for 5 HP to 10 HP motor.

Supply and install in replacement DOL starter with single phase protection features in sheet steel enclosure type MN motor rating 415V, 50Hz, 3 phase upto 5HP motor complete all as specified and as directed by Engr-in-charge.

Supply and fix in replacement Cl foot valve flange type 150 mm dia conforming to IS 4038 complete fixed on suction pipe of pump complete all as specified and as directed by Engr-in-charge.

All as per item No 38 here-in-before, but for 100mm dia.

All as per item No 38 here-in-before, but for 50mm dia.

Supply and fixing upto 150mm dia bore DI/ CI special such as bends, tees, collars, tail pieces confirming to IS-9523 flanged type complete all as specified and directed.

Cutting of existing cast iron pipe line of upto 150 mm bore in position for inserting CI/DI Special such as tees, bend, collar, tail piece etc for fixing of sluice valves/for branch connection etc complete all as specified and as directed by Engr-in-charge. Note: - Excavation & earth work, CI special & sluice valves of size & lead joint shall be measured and paid separately.

Material and labour for run lead joint including all jointing material for 100mm bore cast iron spigot & socketed pipe & fittings including burning out old u/s lead joints in position and removing old lead complete all as specified and as directed by Engr-in-charge. Note: Earth work shall be measured and paid separately.

All as per item No 43 here-in-before, but for 150mm bore pipe.

Material and Labour for Non return valve (NRV) valve 1.6 PN complete conforming to IS:1969 double flanged and drilled including bolts, nuts, washers, gasket etc complete and dismantling of old u/s valve of size 150 mm dia complete all as directed by Engineer-in-Charge.

All as per item No 45 here-in-before, but for 100mm bore pipe & fittings.

All as per item No 45 here-in-before, but for 80mm bore pipe & fittings.

All as per item No 45 here-in-before, but for 65mm bore pipe & fittings.

Material and labour for construction of one brick masonry valve pit built in cement mortar 1:6 of size 110cm x 110cm x 105cm (internal dimension) over 15cm thick PCC 1:3:6 type C-2 sub base extended all-round 15cm beyond external edge of brick work including plastering 15mm thick in cement mortar 1:4 internally and plus pointing to brick wall surfaces externally as work proceeds complete with MS sheet cover 10SWG with handle, angle iron frame 40mm x 40mm x 6mm, grouting with anchor fashioners length not less than 15cm - 04 Nos, locking arrangement and painting complete all as specified and directed by Engineer-in-Charge. Note: Rate quoted by the tenderer shall deem to be included the cost of excavation and earth work.

All as per item No 49 here-in-before, but of size 90cm x 90cm x 105cm (internal dimension).

Supply and fixing cast iron sluice valve class PN 1.6 heavy duty, with flanged ends having high brass spindles, cast iron wheel, with shut down and open direction and marked on the wheel, confirming to IS: 14846-2000 and fixing up with jointing material, flanged joint, rubber gasket 6mm thick, MS wedge nuts & bolts, washer 10mm thick complete of 65mm dia size including dismantling old u/s valve complete all as specified and as directed by Engineer-in-Charge.

All as per item No 51 here-in-before, but for 80mm bore pipe.

All as per item No 51 here-in-before, but for 100mm bore pipe.

All as per item No 51 here-in-before, but for 150mm bore pipe.

Supply and fix in repair the holding clamp made of flat iron 100 mm wide and 15mm for 100/80 mm bore pipe with 04 Nos of drilled holes including nut bolts etc complete all as specified and as directed.

Supply & fix in repairs well cap of iron sheet 6mm thick for 150mm (6 Inch) to 300mm (12 inch) bore pipe with proper shape for submersible cable, column pipes etc including nut bolts, welding work and other fixing materials complete all as specified and as directed.

Supply & fix in repair float valve ball (set of two balls) of size 250mm dia into over head reservoir of capacity 15000 to 60000 gallon connected with ceiling rope 2mm dia of length upto 40 metres with GI Plate indicator hanged along with ceiling rope for indication of water level complete all as specified and as directed.

Supply & fix in repair bearing type pulley for support and movement of ceiling rope on over head reservoir, 03 Nos for each tank including fixing and connected accessories complete for Over head reservoir of capacity 15000 to 60000 gallon at Depot, Ambalapady, & TSK area complete all as specified and as directed

Disconnecting of electric supply from star delta starter of defective submersible pumping set and taking out pump set with 15HP motor from bore well by the help of tripod and chain pulley including submersible cable and other accessories etc and relowering, commissioning and testing the same after repairing of submersible pump set straighting ring, jointing, welding, turning and polishing to pump shaft any size CI/GM impeller CI bowl, making key with key way & other replacement of worn out parts with new including lath work & any type of machine work required at site including replacement of nut & bolts, rubber gasket of column pipe and reassembling pump set complete after repair, connecting & testing complete all as specified and as directed.

Note: (a) Transportation of pump sets from site to workshops and vice versa shall deem to be included in the unit quoted rate. (b) Tools & Plant required at site will be arranged by the contractor.

Supply only pea shaped gravel of size 1/8 to 3/8 inches and gravel shrouding in annular space between well and liner assembly required during re-development complete all as specified and as directed.

Redevelopment of tube well with air compressor of adequate capacity not less than 250cfm till the availability of sand free clear water, subject to minimum 48 hours of operation of air compressor complete all as specified and as directed by Engr-in-charge. Note: Transportation of compressor and other allied equipment/ material to and from the site of tube well is to be deemed in the quoted rates.

Material & labour for stabilization and yield testing of tube well by using submersible pump of adequate capacity subject to minimum of 24 hours of development with submersible pump including conduction of sounding test complete all as specified and as directed by Engr-in-charge.

Supply and fixing in repair MS heavy duty ISI marked column pipe 80/65mm bore 3 metre long both ends flanged complete all as specified and as directed by Engineer-in-Charge.

Replacement of single phase preventer of capacity 100 Amps with reverse phase/ single phase/ overload protection complete all as specified and as directed by Engineer-in-Charge.

Material and labour for cleaning inside RCC over head tank of 20000 Litres capacity at TSK by removing dirt, sediments, stilts, algae etc from internal bottom and wall surfaces of tank using suitable brushes, applying bleaching powder and other cleaning agents as required and applying two coats of lime wash inside surface, including writing capacity of tank and date of cleaning on outside the tank using synthetic enamel paint and removing of creepers and bushes over the OH tank and perimeter of the OH Tank complete all as specified and as directed by Engineer-in-charge. Note: (a) Cleaning will be carried out twice during the entire contract period after completion of 6 months from the first cleaning. (b) After cleaning twice the qunatity will be measured as one job.

All as per item No 65 here-in-before, but for OH Tank of capacity upto 60000 gallon at Ambalapady & NAD Depot complete all as specified and as directed by Engineer-in-charge

All as per item No 65 here-in-before, but for underground sump of 20000/25000 Litres capacities at TSK-1No., Ambalapady-1No., Ayudh Vihar Colony-02Nos. complete all as specified and as directed by Engineer-in-charge.

All as per item No 65 here-in-before, but for under ground sump of capacity 50000/60000 Litres at Ambalapady-1No., Depot-1No., NAD Colony-01No. complete all as specified and as directed by Engineer-in-charge.

All as per item No 65 here-in-before, but inside the HDPE/AC tanks of 5000 Litres capacity complete all as specified and as directed by Engineer-in-charge.

Note for items No. 65 to 69: a) Cleaning will be carried our twice during the entire contract period after completion of 6 months from the first cleaning. b) After cleaning twice the quantity will be measured as one Job

Material and labour forpreparation of old painted surface and applying single coat of synthetic enamel paint of approved colour on overhead reservoir iron stairs/ railings etc including connected accessories complete all as specifed and as directed by Engineer-in-Charge.

Servicing/ repair to service tank model No. VST 1006 net capacity 100 litres of FRP dosing tank top dia 540mm x bottom dia 480mm x height 575mm consisting of the following complete all as specifed and as directed: (a) Water inlet line. (b) Dosing pump inlet arrangement. (c) Drain (d) Overflow (e) Level gauge (f) Inspection port (g) Agitator 120 watt 900 RPM single phase flange mounted motor with plastic shaft and impeller. (h) Provision of mounting pump on lid/wall. Note: Replacement of any spares/ parts are included in the quoted rates.

Supply & fix in repair tank lid, HDPE, of capacity 1000 Litres with suitable sizes of hinges complete all as specifed and as directed

Sampling and testing of water for the confirmation of desirable/permissible limit of following requirements for "DRINKING WATER" as per IS:10500-1991 from Govt approved laboratory including transportation of water from site to lab complete all as specified and as directed. (a) Bacteriological requirements: Testing of coli form organisms/100ml (b) Chemical requirements: Testing of colour hazen unit Max, odour, taste, turbidity NTU max, pH value, total hardness (as CaCO₃) mg/l max, Iron (as Fe) mg/l max.

(c) Desirable Characteristics: Testing of dissolved solids mg/l max, Calcium (as Ca) mg/l max, Mangenese (as Mn) mg/l max, Copper (as Cu) mg/l max, Magnesium (as Mg) mg/l max, Sulphate (as SO4) mg/l max, Nitrare (as NO3) mg/l max, Phenolic compound mg/l max, Mercury mg/l max, Cadmium (as Cd) mg/l max, Selenium (as Se) mg/l max, Arsenic (as As) mg/l max, Cyanide (as CN) mg/l max, Lead (as Pb) mg/l max, Zinc (as Zn) mg/l max, Chromium mg/l max, Mineral oil mg/l max.

Supply & fix in repair water pressure gauge for suitable for pumping line complete all as specified and as directed by Engineer-in-charge

Supplying calcium hypochlorite based granular disinfectant for water treatment, packing in 45 Kgs plastic drums complete all as specified and as directed.

Supply, fixing and testing in repairs electrical cable submersible type flat copper 3 core 10 Sqmm with standard conductor PVC insulated and sheathed including jointing material complete all as specified and as directed by Engineer-in-Charge.

All as per item No 76 here-in-before, but for 3 core 4 Sqmm

Material & labour for disconnecting and refixing after repairing of water meter 50mm to 150mm dia by lab or OEM service centre and testing from KWA as per norms complete all as specified and as directed by Engineer-in-Charge. Note: Rate quoted deemed for any type of repair of water meter, testing, transportation etc including replacement of defective parts

Supply & fix in repair cast iron Air Valves with two air outlets, 50 mm dia bore and fixing up in cast iron water supply mains complete all as specified and as directed

Material and labour for prepration of old painted surfaces and applying one coat of synthetic enamel paint of approved colour to centrifugal motor pump upto 30HP including connected accessories such as sluice valves of 65mm to 150mm size, flanges, bends, pipes etc with marking as per instructions complete all as specified and as directed by Engineer-in-Charge. Note: All pumps/ sluice valves/ NRV/ pipes within pump house premises and connected accessories at One pump house will be measured as one job.

Supply and laying in replacement galvanised iron tubing, ISI marked, medium grade 100mm bore with all necessary fittings, cutting thread and laid in fixed to walls and ceilings or laid in trenches/floors including flange, welding, cutting etc complete all as specified and as directed by Engineer-in-Charge.

Material & labour for cleaning and removing all scale and dirt etc, from inside of rotational moulded polyethylene water storage tanks and from mouths of circulating pipes etc of tank size exceeding 250 Litres and not exceeding 500 litres capacity complete all as specified and as directed by Engineer-in-Charge.

All as per item No 82 here-in-before, but for tank size exceeding 500 Litres and not exceeding 1000 litres capacity

All as per item No 82 here-in-before, but for tank size exceeding 1000 Litres and not exceeding 2000 litres capacity. Note for item No 82 to 84: Cleaning of Tank will be carried out twice during the contract period; Minimum interval of 6 months will be maintained between 1st cleaning and 2nd cleaning. After cleaning twice, quantity will be measured as one Job.

Supply and fix brass ball valve, high pressure with polythene float and fly nut complete screwed for iron pipe or brass ferrule of size 50mm dia including taking down old existing valve complete all as specified and as directed by Engineer-in-Charge.

Supply only chlorine test kit with coloured sample, O T solution and testing items packed in rexine finish wooden box complete all as specified and as directed by Engineer-in-Charge.

Supply & fix in replacement digital auto level controller model ALC MK – I including top mounted, non contact ultrasonic level transmitter (probe unit), level indicating controlling box including system incorporated digital stage level, high & low alarm etc, but without wire from transmitter to controlling box as per catalogue sensing range up to 6 metres complete all as specified and as directed by Engineer-in-Charge.

Supply and laying in repairs 3core shielded copper signal cable 0.75 Sqmm branded materials require for proper and clear signaling complete all as specified and as directed by Engineer-in-Charge.

ELSOL ENGINEERS (BID ID -3106985)

M/s S & S Enterprises/ Suresh Shivasankarapillai (BID ID -3105422)

St George Engineering Works (BID ID -3102392)

Kuriako Mathai and company (BID ID -3109792)

LALA CONSTRUCTION (BID ID -3105940)

M/S AARJAY ASSOCIATES (BID ID -3107536)

S. M. Enterprises (BID ID -3105826)