REPAIR AND MAINTENANCE TO PUMP SETS, MOTORS, CHLORONOME PLANTS AND WATER TREATMENT PLANTS AT 273 SU AND 20 WING AFS BAGDOGRA UNDER GE (AF) BAGDOGRA

Amount

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 as directed. Note:- The serviceability of filter media shall be decided by the BOO order by GE. Serviceable material shall be reused and unserviceable material should be disposed of out side MD land. Rate quoted for the item shall included for the same . Payment in RAR/FB will be made only after approval of BOO.

All as per item No 1 above, but capacity 6000 gallon per hour. Note:- The serviceability of filter media shall be decided by the BOO order by GE. Serviceable material shall be reused and unserviceable material should be disposed of out side MD loud. Rate quoted for the tender shall included for the same . Payment in RAR/FB will be made only after approval of BOO.

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 as directed. (Make: RMCO/ASHFORD or equivalent)

M&L for preparation of old painted internal steel surfaces of Filtration plant shell and 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 as directed.

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

M& L for packing of following sizes of new filter media in layers of approved quality obtained from ‘Barakar River’ complete all as specified and as directed. RBM/Gravel of size 12 mm to 25 mm complete all as specified and directed. Note:- Filled quantity inside IRP will be measured and paid without deduction voids.

All as per item No 6 above, but RBM/Gravel of size 6 mm to 12 mm complete all as specified and directed. Note:- Filled quantity inside IRP will be measured and paid without deduction voids.

All as per item No 6 above, but RBM/Gravel of size 3 mm to 5 mm complete all as specified and directed. Note:- Filled quantity inside IRP will be measured and paid without deduction voids.

All as per item No 6 above, but Sand of size 16/30 mesh complete all as specified and directed. Note:- Filled quantity inside IRP will be measured and paid without deduction voids.

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 as directed.

Taking water sample for chemical analysis test for portability of water from approved Govt lab complete all as specified and as directed.

Replacement of unserviceable water pressure gauge with new pressure gauge capacity 7 kg/sqcm to 10 kg/sqcm complete all as specified and as directed. (Make : RMCO/OASIS).

Taking out old unserviceable rubber gasket from position with taking out of nuts, bolts etc and S&F New rubber gasket of size 75cm outer dia, 3mm thick rubber sheet of approved quality fixed with suitable size & dia mild steel machine made nuts, bolts & washers of required size & numbers complete all as specified and as directed. (Note: Nuts, bolts & washers shall be measured & paid separately under relevant item here-in-after).

All as per item No 13 above, but of size 45cm outer dia.

S&F mild steel machine made nuts, bolts & washers of size 15mm(5/8”) dia and 75mm (3”) long or nearest suitable sizes for top cover and side cover of Soda /Alum pot complete all as specified and as directed.

Taking down old unserviceable sluice valve from existing position and supply and fixing cast iron sluice valve conforming to IS - 14846 PN 1.6 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 150 mm bore pipe. (Make - KIRLOSKAR/ BIR/ RMCO/VENUS or equivalent)

All as per item No 16 above, but for 100 mm dia complete all as specified and directed.

All as per item No 16 above, but for 80 mm dia complete all as specified and directed.

Lifting and taking out complete submersible pump set 5 HP to 15 HP alongwith the column pipes with the help of chain pulley block from borewell well after disconnecting electrical connections from panel, disconnecting from suction and delivery pipe lines, disconnecting column pipes, testing electric motor to ensure its actual condition, seperating pump & motor from coupling, reassembling and lowering pump & motor into bore well complete, connecting, testing and commissioning alongwith connected items such as MS column pipe, cable, re-fixing after receiving repaired and tested submersible pump with new nuts & bolts, rubber packing with proper alignment and making electrical connection, binding of cable with column pipe with nylon rope complete including testing all as specified.

Transportation of submersible pump sets 3 phase any make and capacity 5 to 15 HP from pump house to work shop to 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.

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 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 make as approved:- (a) Capacity 10 HP to 12.5 HP 3 phase 400/415 Volts Note:- The retrieved unserviceable copper wire shall be handedover to store and RV obtained.

(b) Capacity 5 HP to 7.5 HP 3 phase 400/415 Volts complete all as specified and directed. Note:- The retrieved unserviceable copper wire shall be handedover to store and RV obtained.

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

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

Supply only stainless steel bushes 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 shaft & replacement of bowl bush for 5 HP to 15 HP complete.

Supply only rubber packing 20mm thick consisting of 8/6" holes for 100mm 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 by Engineer-in-Charge.

Dismantling and taking down unserviceable electric motor from foundation and transportation to workshop for repairing and rewinding with existing size copper wire, winding with insulating material and warnishing, heating etc and reassembly installing on existing foundation including proper alignment and testing complete for the following size of Pump sets:- (a) 5 HP to 7.5 HP Capacity. Note:- The retrieved unserviceable copper wire shall be handedover to store and RV obtained.

(b) 1 to 3 HP Capacity. Note:- The retrieved unserviceable copper wire shall be handedover to store and RV obtained.

Repair/maint/servicing and checking thoroughly defective centrifugal pump set of capacities 1 to 3 HP HP by dismantling of pump set at site and checking inspection and replacement of unsv spares as required or as directed. Note:- Spares if any will be measured and paid separately as supply only.

Supply only Impeller for 5 to 7.5 HP Pump set.

Supply only Water retaining (Deflector) Ring DE/NDE suitable for 5 to 7 HP pump set.

Supply only Linter Ring CI DE/NDE suitable for 5 to 7 HP pump set.

Supply only Set of gasket suitable for 5 to 7 HP pump set.

Supply and replace ball bearing of size Ball bearing 6307 (Single ball) Make: SKF including taking out old unserviceable bearing complete all as specified and directed. Make : SKF/NBC

All as per item No 40 above, but Ball bearing 6308 (Single ball).

All as per item No 40 above, Ball bearing 6309 (Single ball).

All as per item No 40 above, Ball bearing 6311 (Single ball).

Checking overhauling and pressure testing of normal working pressure and replacement of unserviceable gauges safety "V' belt compressor piston rings etc for air compressor stationary type electrically operated air cooled complete including painting with two coats of synthetic enamel paint (first quality) after preparation of surfaces by scraping old paint complete all as specified and as directed.

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

Supply & fix in repairs PVC NRV( injection check valve) set with glass ball for Suction & delivery suitable for existing granual chlorine dosing system.

Supply & fix in repairs PVC strainer washer type heavy duty or 'Y' type strainer for Suction suitable for existing granual chlorine dosing system.

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

Supply & fixing in repairs Suction / Discharge valve assembly for chlorine dosing system all complete as specified and directed. Make - ramco / Aquafit / Austin India.

Supply & fix in repairs teflon gland packing square type 3 mm suitable for existing granual chlorine dosing system.

Supply & fix in repairs Suction / Discharge tubing (3/8" - white ) suitable for existing granual chlorine dosing system. Make - ramco / Aquafit / Austin India.

S&F in repairs 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 , 11 kW, 9-15 A range all complete as specified and directed. (Make- L&T -CAT SS94362, C&S . Seimens)

S&F in repairs Fully Automatic Star-Delta in sheet metal enclosure type MN with single phase protection feature suitable for motor rating AC-3 phase, 415V, 12.5 HP , 9.3 kW, 9-14 A range all complete as specified and directed. Make- L&T -CAT SS996254, C&S . Seimens)

Supply and fixing in repairs Control cable of copper conductor sheathed PVC 3 core 4.0 sqmm size complete all as specified and directed by Engr-in-Charge.

S&F in repairs MCCB 4 pole 63 to 100 Amp of breaking capacity 25 KA complete all as specified and directed. (Make- Havells/ Legrand/ Seimens/ L&T).

S&F in repairs Indicator lamps LED type any colour or equivant to existing in LT panel at size complete all as specified and directed by Engr-in-Charge.

M&L 80mm dia bore GI Tubing medium grade 3 mtr long for submersible pump column pipe, both sides new thread by lathe machine including one nos. MS heavy duty special socket 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.

UNISON CONSTRUCTION

NAYAK BROTHERS

M/S P K ROY AND CO

M/S SUNNY ENTERPRISE

SHRI P P SHARMA

M/S MANAS MITRA