REPAIR AND MAINT TO PUMP SETS, MOTOR, CHLORONOME PLANTS, CLEANING OF OH TANKS, WATER TREATMENT PLANT, WATER TESTING IN EVERY QUARTERS INCLUDING PURIFICATION OF WATER AT 20 WING, 273 SU AND 46 WEU AF STN UNDER GE (AF) BAGDOGRA

Amount

Excavation in trenches in soft/ loose soil n.exc 1.5 mtr wide n.exc 1.5 mtr deep getting out soil complete all as specified and directed.

Returning filling in including spreading leveling well ramming in layers n.exc 25 cm thick in a layers complete all as specified and directed.

Removing excvated material (Soil) n.exc 50 mtr and depositing where directed at a level n.exc 1.5 mtr above the starting point complete all as specified and directed.

M&L for cement concrete, 1:3:6, type C2 (using 40 mm graded stone aggregate) for making good to disturbed surface of road etc. complete all as specified and directed.

Transportation of submersible pump set 3 phase any make and capacity 5 HP to 15 HP from pump house to contractor work shop for carry out necessary repair work to pump set submersible and transporting it back to site of water supply installation of AF Stn area complete all as specified and directed.

Dismantling of submersible motor any make and any capacity 5 HP to 15 HP and reassembling complete after carry out necessary repair work & testing complete for smooth working to entire satisfaction of Engineer-in-charge. Note: New parts/components to be replaced shall be measured and paid separately under supply only.

M&L for rewinding of submersible motor of capacity 10 HP to 12.5 HP 3 phase 400/415 volts any make and capacity as mentioned below existing size and gauge of PVC insulated single core copper winding wire submersible including all insulating material of approved make complete all as specified and directed.

Supply only upper and lower housing bushes of any material complete suitable for 5 HP to 15 HP complete all as specified and directed.

Supply only Impeller suitable for 5 HP to 15 HP submersible motor complete all as specified and directed.

Supply only stainless steel bush each set suitable for 5HP to 15 HP submersible motor complete all as specified and directed.

Supply only 'O' ring kit and oil seal kit suitable for any capacity complete all as specified and directed.

Supply only sand guard suitable for any capacity complete all as specified and directed.

Supply only water seal suitable for any capacity complete all as specified and directed.

Repair of bowl bush of housing by proper machine work of housing and pump soft & replacement of bowl bush for 5 HP to 15 HP complete.

Supply only rubber packing 20mm thick consisting of 8/6" holes for 100 mm to 150 mm dia column pipe complete all as specified and directed.

Jointing the submersible cable by jointing kit of suitable size by means of jointing material & making the leak proof jointing complete all as specified and directed.

Supply and laying the GI water tubing medium grade with all fittings in trenches all as directed 25mm bore.

All as per item No-17 above but for 20 mm bore complete all as specified and directed.

Supply and laying/ fixing polypropylene random pipe (PP-R) PN 16 in three layer incl fixing of all fittings made out of PP –R as required for fixing to wall or laid in floor / ground all as specified and directed for 20 mm bore.

All as per item No-19 above, but 50 mm dia complete all as specified and directed.

All as per item No-19 herein before, but 32 mm dia complete all as specified and directed.

All as per item No-19 herein before, but 25 mm dia complete all as specified and directed.

Taking down old unserviceable sluice valve from existing position and supply and fixing cast iron sluice valve conforming to IS - 14846 clockwise dosing with flanged ends and iron wheel including necessary joints by means of bolts, nuts washers and rubber gaskets complete all as specified for 100 mm bore pipe.

All as per item No-23 above, but 150 mm dia complete all as specified and directed.

All as per item No-23 herein before, but 80 mm dia complete all as specified and directed.

Supply and fixing male threaded socket complete suitable for 32 mm bore complete all as specified and directed.

All as per item No-26 above, but 25 mm complete all as specified and directed.

All as per item No-26 herein before, but 20 mm complete all as specified and directed.

M & L for attending pipeline breakdown of any dia by making threads and excavation in any type of soil including returning filling and removal of soil and testing of pipe line complete all as specified and directed.

M & L for cleaning and sterilization of inside Underground reservoir capacity upto 10000 gallons. Dewatering of UG tank using DG set. Sludge removal by using buckets from inside of tanks. Scrubbing the inner surface and floor of tank. Flushing with chlorine and lime, second time flushing with clean water, cleaning of undergrowth in and around tank complete all as specified and directed.

M & L for cleaning and sterilization of inside overhead reservoir capacity upto 20000 gallons through bacteriological treatment by using oxidising agent complete all as specified and as directed by Engr-in -Charge.1. First stage is to drain out the water by using wash out valve or high capacity dewatering system.2) Second stage is cleaning all the algae formation inside the tank and scrubbing the walls of the tank 3) Third stage is fresh water cleaning.4).Fourth stage is bacteria screening and using of Chlorine solution to kill all micro organisms. 5) Fifth stage is cleaning the floor of water tank.6) Sixth stage is the second bacteria screening and sterilizing. 7) Seventh stage of cleaning is to sterilize the floor of the water tank by strong oxidizing agent. Lastly Flushing out the whole tank three times with chlorine and bleaching powder solution . Note- (i) Cost of staging and necessary working platform shall deemed to be included in quoted rate (ii) Contractor shall ensure necessary safety precaution and insurance of working during execution (iii) The quoted rates shall be deemed to be included the cost of writing date of cleaning ,due date and capacity of tank on the wall surface of the tank.

M & L for cleaning and sterilization of inside Underground reservoir capacity upto 25000 gallons, Dewatering of UG tank using DG set, Sludge removal by using buckets from inside of tanks, Scrubbing the inner surface and floor of tank.Flushing with chlorine and lime, second time flushing with clean water, cleaning of undergrowth in and around tank complete all as specified and directed.

M & L for cleaning and sterilization of inside overhead reservoir capacity upto 30000 gallons through bacteriological treatment by using oxidising agent complete all as specified and as directed by Engr-in -Charge.1. First stage is to drain out the water by using wash out valve or high capacity dewatering system.2) Second stage is cleaning all the algae formation inside the tank and scrubbing the walls of the tank 3) Third stage is fresh water cleaning.4).Fourth stage is bacteria screening and using of Chlorine solution to kill all micro organisms. 5) Fifth stage is cleaning the floor of water tank.6) Sixth stage is the second bacteria screening and sterilizing. 7) Seventh stage of cleaning is to sterilize the floor of the water tank by strong oxidizing agent. Lastly Flushing out the whole tank three times with chlorine and bleaching powder solution . Note- (i) Cost of staging and necessary working platform shall deemed to be included in quoted rate (ii) Contractor shall ensure necessary safety precaution and insurance of working during execution (iii) The quoted rates shall be deemed to be included the cost of writing date of cleaning ,due date and capacity of tank on the wall surface of the tank.

M & L for Taking out existing filter media like sand, gravel & ferminex from filtration plant of capacity 10,000 gallon per hour including soda & Alum Pots & removing from site and cleaning the internal surfaces of filtration plant with soda & Alum Pots with using PVC/Steel wire brushes to remove all scales, iron particles and finally clay & other foreign particles with clean water complete all as specified and directed.

Taking out existing unserviceable PVC nozzles and Supply and fix new PVC double deck type PP strainer nozzle of size 10mm to 15mm (3/8” to ½” inch) dia, push type complete all as specified and directed.

M & L for preparation of old painted internal steel surfaces of Filtration plant shell painting with one coat of black bituminous paint suitable for drinking purpose of area exceeding 10 cm in width or girth not otherwise described complete all as specified and directed.

M & L for preparation of old painted external surface of Filtration Plant shell painting with first quality of synthetic enamel (gray shead) paint exceeding 10 cm in width or girth not otherwise described complete all as specified and directed.

M& L for packing of Gravel of size 12 mm to 25 mm of new filter media in layers of approved quality obtained from ‘Barakar River’ complete all as specified and directed.

All as per item No. 38 above, but Gravel of size 6 mm to 12 mm complete all as specified and directed.

All as per item No. 38 herein before, but Gravel of size 3 mm to 5 mm complete all as specified and directed.

All as per item No. 38 herein before, but Sand of size 16/30 mesh complete all as specified and directed.

M & L for packing of chemical of ‘Feriminex’ (MNO2) catalytic agent of size 1/16”x1/32 inches in layers complete all as specified and directed.

Taking water sample for Physical ,chemical and bacteriological testing for potability of water .The following parameters are to be tested (A)Physical characteristics 1.Turbidity 2.PH value 3.Total Dissolved solids (TDS) 4.Taste 5. colour (B) Chemical characteristics 6. Iron 7.Manganese 8. Nitrate 9.Flouride 10.Residual Chlorine 11. Copper 12. Alkalinity 13. Odour 14. chloride 15.Total Hardness 16. Mercury 17.Arsenic 18.Lead (C) Bacteriological Test 1. Coliform Bacteria 2. E.Coli 3. Salmonella complete all as specified and as directed.

S & F Fully Automatic Star-Delta in sheet metal enclosure type MN with single phase protection feature suitable for motor rating AC-3 phase, 415V, 15 HP , 9-14 A range all complete all as specified and directed.

Taking out complete submersible pump set upto 15 HP alongwith the pipes with the help of chain pulley block from bore well after disconnecting electrical connections from panel, disconnecting from suction and delivery pipe lines, disconnecting column pipes, reassembling and lowering pump & motor into bore well complete, connecting, testing and commissioning alongwith connected items .cable re-fixing after receiving repaired and tested submersible pump ,rubber packing with proper alignment and making electrical connection including testing complete all as specified and directed.

Supply and Fixing Submersible Pump motor set including dismantling and lifting of column pipe from borewell and refixing alongwith electrical connection and steel wires complete all as specified and directed.

M & L for Construction of valve pit of size 120x 120 x 120 cm (Internal dimension) incl necessary earth work and MS sheet 2 mm thick cover with angleiron frame 40 x 40x 6mm including dismantling of valve pit with cover all as specified and directed.

All as per item No 47 above but of size 90 x 90 x90 cm complete all as specified and directed.

Repair/ overhauling of single phase motor 230 Volts, 50 Hz, 4 pole induction non-synchronous 990 RPM ,1 HP complete all as specified and directed.

Supply & fix PVC NRV( injection check valve) set with glass ball for Suction & delivery suitable for existing granual chlorine dosing system complete all as specified and directed.

Supply & fix PVC strainer washer type heavy duty or Y type stainer for Suction suitable for existing granual chlorine dosing system complete all as specified and directed.

Supply & fixing foot valve assembly for chlorine dosing system including teflon ring seal complete all as specified and directed.

Supply & fixing Suction / Discharge valve assembly for chlorine dosing systemcomplete all as specified and directed.

Supply & fix teflon gland packing square type 3 mm suitable for existing granual chlorine dosing system complete all as specified and directed.

Supply & fix Suction / Discharge tubing (3/8" - white ) suitable for existing granual chlorine dosing system complete all as specified and directed.

Collecting water sample from various Pump Houses of GE(AF) Bagdogra in sterilized bottles and transporting to lab as per conditions prescribed by the lab.Testing of the water sample to be carried out for Physical ,chemical and bacteriological testing for potability of water .The following parameters are to be tested. (A)Physical characteristics 1.Turbidity 2.PH value 3.Total Dissolved solids (TDS) 4.Taste 5. colour (B) Chemical characteristics 6. Iron 7.Manganese 8. Nitrate 9.Flouride 10.Residual Chlorine 11. Copper 12. Alkalinity 13. Odour 14. chloride 15.Total Hardness 16. Mercury 17.Arsenic 18.Lead (C) Bacteriological Test 1. Coliform Bacteria 2. E.Coli 3. Salmonella complete all as specified and directed.

Supply only Pool sanitiser Pool Standard G-24 for killing of microorganisms and prevention of scaling and stains complete all as specified and directed.

Supply only Pool Standard B-23 for killing of all types of algae and prevention of algae crust formation complete all as specified and directed.

Supply only Pool clarifier Pool Standard A-94 for clarity of water and prevent build up of particles in pool complete all as specified and directed.

Supply only plastic cylindrical sealed disposable sanitizer Refill containing solid chlorine for cholrination and disinfection of drinking water complete all as specified and directed.

NOTES :- 1. The amount of schedule of credit shall be deducted from the total of this BOQ for arriving at contract sum.

NIRANJAN SARKAR (BID ID -3389595)

M/S BENGAL ENGINEERING ENTERPRISES (BID ID -3389032)

M/S MANAS MITRA (BID ID -3390979)

UNISON CONSTRUCTION (BID ID -3390024)

SHRI P P SHARMA (BID ID -3391747)

SREE SWAPAN KUMAR GHOSH (BID ID -3388544)

RABI BANIK (BID ID -3392178)